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technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 1 of 47 mar 2007 - revision 05 aif - 300vin, 600w, dc-dc converter module the single output aif is an isolated, single output dc to dc converter module, providing up to 600w output with a maximum baseplate operating temperature of 100c with no derating. th e aif features full safety isol ated low voltage secondary side control and astec linear programming (alp?) or through i 2 c bus for convenient adjustment of the module's parameters. electrical parameters input input range 250 - 420 vdc input surge 450v / 100ms efficiency 90%@5.0v (typical ) output regulation 0.2% typical down to no load noise / ripple 100mv typical (below 5v) 2% typical (5v and above) control voltage adjust 80 to 120% for 5v, 12v, 15v, 24v 50% to 110% for 1.8v ? 3.3v enable ttl compatible (positive & negative enable options) current limit adju st 20 to 100% over voltage protection adjust 110 to 150% vo safety ul, cul 60950 recognized tuv en60950 licensed special features ? 600w continuous power at 100c baseplate temperature ? 108w/in3 (6.6w/cm3) ? high efficiency - 5v@90 % , 12v@87% ? low output ripple and noise ? positive and negative enable function ? excellent transient response ? ovp, ocp, v adj control with alp tm analog mode linear control, or through i 2 c bus for digital mode control. ? paralleable with accurate current sharing ? switching frequency 400khz environmental specifications -20 c to 100 c operating baseplate temperature -55 c to 125 c storage temperature mtbf > 0.3mhours pb-free reflow compatible and rohs compliant
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 2 of 47 mar 2007 - revision 05 electrical specifications standard test condition on a single module unless otherwise indicated, specifications apply over all operating input voltage and temperature conditions. t amb 25 c vin 300 v 2 % enable connect to -sense (for models with suffix "n") enable open (for models without suffix "n") clk in open clk out open cshare open iout 75 % i o max 2 % +sense connect to +vout -sense connect to -vout v adj open c mon open temp mon open c lim adj open ovp adj open pg/id open i/p cap requirement 68 f/450v min. absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only. functional operation of the device is not implied at these or any other conditions in excess of those given in th e operational sections of the ips. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter device symbol min typ max unit input voltage: continuous: transient (100ms) all all v i v i, trans 250 - - 420 450 v dc v dc operating baseplate temperature start up baseplate temperature all all tc - -20 -40 - - 100 100 c c storage temperature all t stg -55 - 125 c operating humidity all - 15 - 95 % i/o isolation all - 2700 - - v dc
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 3 of 47 mar 2007 - revision 05 input specifications parameter device symbol min typ max unit operating input voltage all v i 250 300 420 v dc undervoltage lockout (i o = 10 % i o max ) turn-on point turn-off point all all - - 205 175 - - 245 215 v v input current 1 (v i = v i min , i o = i o max , v o = v o nom ) (v i = 0 to v i max , i o = i o max , v o = v o nom ) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n-l/-ntl aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl i i max i i max i i max i i max i i max i i max i i max i i max i i max i i max i i max i i max - - - - - - - - - - - - - - - - - - - - - - - - 1.14 2.0 1.9 2.8 2.8 2.8 1.3 2.3 2.3 3.4 3.4 3.4 a a a a a a a a a a a a input reflected-ripple 2 current (5hz to 20mhz: 12 h source impedance: t amb = 25 c.) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl i i i i i i i i i i i i - - - - - - 20 20 20 30 30 30 - - - - - - map-p map-p map-p map-p map-p map-p inrush transient 3 all i 2 t- -2.8a 2 s break regulation all - - 215 245 v clk in frequency voltage level (internal ac coupled) all all - - 720 3.3 800 - 880 5.5 khz v p-p enable positive logic low logic - module off high logic - module on negative logic low logic - module on high logic - module off enable low sourced current (v enable = 0.7v) turn-on delay without suffix ?n? with suffix "n" all all venable venable venable venable - - 0 2 0 2 - - - - - - - - 0.7 10 0.7 10 150 30 v v v v a ms
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 4 of 47 mar 2007 - revision 05 input specifications (continued)) parameter device symbol min typ max unit no load input power aif120y300-l/n-l/-nt l aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - - - - - - - 25 25 25 5 5 5 w w w w w w turn-on time (i o = i o max ; v o within 1%) (no o/p capacitance) all - - - 350 ms input capacitance all - - 0.6 0.8 f output specifications parameter device symbol min typ max unit output voltage setpoint (v i = v i min to v i max : i o = i o max ; t amb = 25 c ) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl v o set v o set v o set v o set v o set v o set 1.782 3.267 4.950 11.88 14.85 23.76 - - - - - - 1.818 3.333 5.050 12.12 15.15 24.24 v v v v v v output voltage adjust 4 v adj = 0v v adj = 2v aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - 48 48 78 78 78 78 108 108 118 118 118 118 50 50 80 80 80 80 110 110 120 120 120 120 52 52 82 82 82 82 112 112 122 122 122 122 % vo % vo % vo % vo % vo % vo % vo % vo % vo % vo % vo % vo output regulation: line load aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10 10 0.2 0.2 0.2 0.2 10 10 0.2 0.2 0.2 0.2 mv mv % % % % mv mv % % % %
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 5 of 47 mar 2007 - revision 05 output specifications (continued) parameter device symbol min typ max unit temperature coefficient (tc = -40 c to +100 c ) all - - - 0.02 % v o / c output ripple and noise peak-to-peak (5 hz to 20mhz) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - - - - - - - 100 100 100 240 300 480 mv p-p mv p-p mv p-p mv p-p mv p-p mv p-p external load capacitance aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - - - - - - - 20,000 33,000 10,000 10,000 3,300 10,000 f f f f f f output current aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl i o i o i o i o i o i o 0 0 0 0 0 0 - - - - - - 120 120 80 50 40 25 a a a a a a output current monitor imon at io max monitored io range imon compliance voltage all all all - - - 0.9 20 - 1.0 - - 1.1 100 5.0 ma % i o max v output current-limit inception (v o = 97 % v o set nom ) all i o 105 - 115 % i o max output current limit adjust all - 20 - 100 % i o max current share accuracy (cshare connected together, i o 80 % i o max ) no. of parallel unit 5 all all - - - - 3 - 10 10 % i avg pcs over current protection level (v o dropped to 97% of v o nom ) (constant current) all - 105 110 115 % i o max over voltage protection level (latch mode) all - 110 115 120 % v o overvoltage protection adjust all - 110 - 150 % v o over temperature protection trip point ? shut down and auto- recovery autocovery temperature (baseplate temperature) all - - 105 85 - - 120 100 c c internal temperature monitor temperature coefficient source impedance all all - - 9.8 - 10.0 1 10.2 - mv/ c k ?
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 6 of 47 mar 2007 - revision 05 output specifications (continued) parameter device symbol min typ max unit efficiency (v i = v inom , i o = i o max , t amb = 25 c) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - 80 87 88 86 90 90 - 89 90 87 - - - - - - - - % % % % % % output power aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl p o p o p o p o p o p o - - - - - - 216 396 400 600 600 600 w w w w w w step-load excursion (25 % to 75 % load change @1a/ s, recovery to 1 % v o ; v i = v i nom ; t amb = 25 c) aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - - - - - - - - - - - 150 165 250 600 750 1200 mv mv mv mv mv mv step-load response (25 % to 75 % load change @1a/ s, recovery to 1% vo; v i = v i nom; tamb = 25 c; measure from end of transition) all ---250 s turn-on output voltage overshoot (i o = i o max ; t amb = 25 c; no external o/p capacitor) all - - 3 5 % v o short circuit current (hiccup mode or continual mode, current measure at continual st eady state level or bounce steady pk level) all ---150% i o max switching frequency all - 360 400 440 khz clk out frequency voltage level (internal ac coupled) no. of fan out unit all - - - 720 3.3 - 800 - - 880 5.5 2 khz v p-p pcs. turn-off negative voltage (resistive loading, wire length of 10cm) all ----0.7v
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 7 of 47 mar 2007 - revision 05 output specifications (continued) parameter device symbol min typ max unit power good monitor pg/id low (power fault, i sink 10 ma) pg/id internal pull-up resistance to v o all aif120y300-l/n-l/-ntl aif120f300-l/n-l/-ntl aif80a300-l/n-l/-ntl aif50b300-l/n-l/-ntl aif40c300-l/n-l/-ntl aif25h300-l/n/-l-ntl - - - - - - - - 1.76 3.23 4.99 11.7 14.7 23.5 - 1.8 3.3 5.1 12 15 24 0.2 1.84 3.37 5.21 12.3 15.3 24.5 v k ? k ? k ? k ? k ? k ? notes: 1. an input line fuse is recommended for use (e.g. littelfuse type, 10a 250v fb). 2. external input capacitance requ ired. see figure 1 for the input re flected-ripple current test setup. 3. see figure 2 for the inrush current test setup. input capacitor with 68uf/450vmin must always be added. 4. the combination of remote sense and trim do not exceed a total of 0.5v. 5. see figure 4 for modules in parallel connection. isolation specifications parameter device symbol min typ max unit isolation capacitance all - - 300 - pf isolation resistance all - 10 - - m ? insulation specifications parameter min typ max unit input to output @ 500vdc 10 - - m ? input to baseplate @ 500vdc 10 - - m ? output to baseplate @ 500vdc 10 - - m ? safety agency parameter device safety approval all ul/cul 60950, 3rd edition ? recognized en 60950 through tuv
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 8 of 47 mar 2007 - revision 05 electrical specifications (continued) shock and vibration vibration test endurance random vibration (non-operating) random vibration shall be applied at the following test condition: frequency range 10 ? 200hz; 200 ? 2000hz psd 0.01g 2 /hz; 0.003g 2 /hz acceleration 2.5g rms (typical level) duration 20 mins per axis endurance random vibration (operating) random vibration shall be applied at the following test condition with the unit at operating mode at nominal lines and full loa d condition, with pok monitored: frequency range 10 ? 500hz psd 0.002g 2 /hz flat acceleration 1g rms duration 20 mins per axis shock test the non-operating test condition is selected as typical of: acceleration 30g pulse halfsine duration 6ms minimum directions all 6 faces, 3 times in each positive and negative directions the operating test condition is selected as typical of: acceleration 4g pulse halfsine duration 22ms minimum directions all 6 faces, 3 times in each positive and negative directions esd contact discharge 6kv air discharge 8kv emc (conducted) class cispr22 a ? this is a system test and not a com ponent level test. see figure 5 for the recommed emi filter schematic.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 9 of 47 mar 2007 - revision 05 electrical specifications (continued) figure 1. measure input reflected-ripple curr ent with a simulated source inductance of 12 h. figure 2. measure input inrush current with a simulated source inductance of 12 h and input bulk capacitor of 68 f.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 10 of 47 mar 2007 - revision 05 electrical specifications (continued) figure 3. module connection for single operation (view from baseplate). figure 4. modules connection for parallel operation (view from baseplate).
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 11 of 47 mar 2007 - revision 05 electrical specifications (continued) figure 5. emi filter schematic figure 5.1. recommend emi filter schematic figure 5.2. conduct emi scan ( without filter )
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 12 of 47 mar 2007 - revision 05 performance curves aif120y300n-l efficiency vs. output current 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 20406080100120 output current [a] efficiency [%] vin = 250vdc vin = 300vdc vin = 420vdc figure 6. efficiency vs. load current at baseplate temperature (t b ) = 45 c. pow er dissipation vs. output current 0 10 20 30 40 50 60 0 20406080100120 output current [a] power dissipation [w] vin = 250vdc vin = 300vdc vin = 420vdc figure 7. power dissipation vs. load current at baseplate temperature (t b ) = 45 c. figure 8. output ripple waveform, vin = 300v, io = 120a, at baseplate temperature (t b ) = 45 c. figure 9. clock out waveform, vin = 300v, at baseplate temperature (t b ) = 45 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 13 of 47 mar 2007 - revision 05 performance curves aif120y300n-l (continued) figure 10. transient response-vout deviation (hi-lo) at baseplate temperature (t b ) = 45 c. figure 11. transient response-vout deviation (lo-hi) at baseplate temperature (t b ) = 45 c. tba figure 12. turn-on time (enable to output) figure 13. turn-on time (input to output) at baseplate temperature (t b ) = 45 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 14 of 47 mar 2007 - revision 05 performance curves aif120f300n-l tba figure 14. efficiency vs. load current tba figure 15. power dissipation vs. load current tba figure 16. output ripple waveform tba figure 17. clock out waveform
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 15 of 47 mar 2007 - revision 05 performance curves aif120f300n-l (continued) tba figure 18. transient response-vout deviation (hi-lo) tba figure 19. transient response-vout deviation (lo-hi) tba figure 20. turn-on time (enable to output) tba figure 21. turn-on time (input to output)
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 16 of 47 mar 2007 - revision 05 performance curves aif80a300n-l figure 24. output ripple waveform, vin = 300v, io = 80a, at ambient temperature (t a ) = 25 c. figure 25. clock out waveform, vin = 300v, at ambient temperature (t a ) = 25 c. efficiency vs. output current 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 20406080 output current [a] efficiency [%] vin = 250vdc vin = 300vdc vin = 420vdc figure 22. efficiency vs. load current at ambient temperature (t a ) = 25 c. pow er dissipation vs. output current 0 10 20 30 40 50 0 20406080 output current [a] power dissipation [w] vin = 250vdc vin = 300vdc vin = 420vdc figure 23. power dissipation vs. load current at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 17 of 47 mar 2007 - revision 05 performance curves aif80a300n-l (continued) figure 26. transient response-vout deviation (hi-lo) at ambient temperature (t a ) = 25 c. figure 27. transient response-vout deviation (lo-hi) at ambient temperature (t a ) = 25 c. figure 28. turn-on time (enable to output), vin = 300v, io = 80a, at ambient temperature (t a ) = 25 c. figure 29. turn-on time (input to output), vin = 300v, io = 80a, at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 18 of 47 mar 2007 - revision 05 performance curves aif50b300n-l efficiency vs. output current 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 1020304050 output current [a] efficiency [%] vin = 250vdc vin = 300vdc vin = 420vdc figure 30. efficiency vs. load current at baseplate temperature (t b ) = 45 c. pow er dissipation vs. output current 0 20 40 60 80 0 1020304050 output current [a] power dissipation [w] vin = 250vdc vin = 300vdc vin = 420vdc figure 31. power dissipation vs. load current at baseplate temperature (t b ) = 45 c. figure 32. output ripple waveform, vin = 300v, io = 50a, at ambient temperature (t a ) = 25 c. figure 33. clock out waveform, vin = 300v, at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 19 of 47 mar 2007 - revision 05 performance curves aif50b300n-l (continued) figure 34. transient response-vout deviation (hi-lo) at ambient temperature (t a ) = 25 c. figure 35. transient response-vout deviation (lo-hi) at ambient temperature (t a ) = 25 c. figure 36. turn-on time (enable to output), vin = 300v, io = 50a, at ambient temperature (t a ) = 25 c. figure 37. turn-on time (input to output), vin = 300v, io = 50a, at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 20 of 47 mar 2007 - revision 05 performance curves aif40c300n-l efficiency vs. output current 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 10203040 output current [a] efficiency [%] vin = 250vdc vin = 300vdc vin = 420vdc figure 38. efficiency vs. load current at baseplate temperature (t b ) = 25 c. pow er dissipation vs. output current 0 10 20 30 40 50 60 70 0 10203040 output current [a] power dissipation [w] vin = 250vdc vin = 300vdc vin = 420vdc figure 39. power dissipation vs. load current at baseplate temperature (t b ) = 25 c. figure 40. output ripple waveform, vin = 300v, io = 40a, at ambient temperature (t a ) = 25 c. figure 41. clock out waveform, vin = 300v, at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 21 of 47 mar 2007 - revision 05 performance curves aif40c300n-l (continued) figure 42. transient response-vout deviation (hi-lo) at ambient temperature (t a ) = 25 c. figure 43. transient response-vout deviation (lo-hi) at ambient temperature (t a ) = 25 c. figure 44. turn-on time (enable to output), vin = 300v, io = 40a, at ambient temperature (t a ) = 25 c. figure 45. turn-on time (input to output), vin = 300v, io = 40a, at ambient temperature (t a ) = 25 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 22 of 47 mar 2007 - revision 05 performance curves aif25h300n-l efficiency vs. output current 55% 60% 65% 70% 75% 80% 85% 90% 95% 0 5 10 15 20 25 output current [a] efficiency [%] vin = 250vdc vin = 300vdc vin = 420vdc figure 46. efficiency vs. load current at baseplate temperature (t b ) = 45 c. pow er dissipation vs. output current 0 10 20 30 40 50 60 70 0 5 10 15 20 25 output current [a] power dissipation [w] vin = 250vdc vin = 300vdc vin = 420vdc figure 47. power dissipation vs. load current at baseplate temperature (t b ) = 45 c. figure 48. output ripple waveform, vin = 300, io = 25a, at baseplate temperature (t b ) = 45 c. figure 49. clock out waveform at baseplate temperature (t b ) = 45 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 23 of 47 mar 2007 - revision 05 performance curves aif25h300n-l (continued) figure 50. transient response-vout deviation at baseplate temperature (t b ) = 45 c. figure 51. transient response-vout deviation at baseplate temperature (t b ) = 45 c. figure 52. turn-on time (enable to output), vin = 300v, io = 25a, at baseplate temperature (t b ) = 45 c. figure 53. turn-on time (input to output), vin = 250v, at baseplate temperature (t b ) = 45 c.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 24 of 47 mar 2007 - revision 05 basic operatio n and features remote sense (+sense, -sense) connect the +sense and ?sense pins of the module directly to the load to allow the module to compensate for the voltage drop across the conductors carrying the load current. if remote sensing is not required (for example i f the load is close to the module) the sense pins should be connected directly to the module?s output pins to ensure accurate regulation. note: if the sense leads fail open circuit, the module will revert to local sense at the output pins. incorrect connection of sense leads may damage the module. remote sense compensation at nominal v o only. enable control (enable) the enable pin is a ttl compatible input used to turn the output of the module on or off. for models without suffix ?n?, the output is enabled when the enable pin open or driven to a logic high >2v, and disabled when the enable pin is connected to ?sense or driven to a logic low of < 0.7v. for models with suffix ?n?, the output is enabled when the enable pin is connected to ?sense or driven to a logic low of < 0.7v, and disabled when the enable pin is open or driven to a logic high > 2v.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 25 of 47 mar 2007 - revision 05 basic operatio n and features (continued) output voltage adjustment (v adj) the output voltage of the module may be accurately adjusted by up -50%, +20% of the nominal factory set output. adjustment is carried out using either an external voltage source (0 to 2v, capable of sinking 1ma) or resistor (0 to 2k) connected between vadj and ?sense. over current protection (ocp) and current limit adjustment (c lim adj) a constant current limiting circuit protects the module under overload or short circuit conditions. module will operate back normally once the overload/fault is removed. with the c lim adj pin left unconnected, the current limit is factory set to 115% of the module?s rated output. current limit may be adjust ed across the range from 20% to 100% using an external voltage source (0.8 to 4v, capable of sinking 1ma) or a resistor (800r to 4k) connected between c lim adj and ?sense.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 26 of 47 mar 2007 - revision 05 basic operatio n and features (continued ) overvoltage protection (ovp) and overvoltage protection adjustment (ovp adj) an independent overvoltage circuit monitors the module?s output pins and will shut the module down in the event o f an internal or external fault which causes the output voltage to rise above the preset limit. the module is reset by removing and re-applying the input power or toggle the enable off/on. the overvoltage set point may be adjusted between 10% and 50% above the output voltage (vo), and automatically tracks adjustments made to the output voltage using v adj. ovp adj should be used to increase the ovp margin when the voltage drop between power output pins and remote sense is more than 0.2v.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 27 of 47 mar 2007 - revision 05 basic operation and features (continued) model number resistance (k ? ) aif120y300-l/n-l/-ntl 1.8 aif120f300-l/n-l/-ntl 3.3 aif80a300-l/n-l/-ntl 5.1 aif50b300-l/n-l/-ntl 12 aif40c300-l/n-l/-ntl 15 aif25h300-l/n-l/-ntl 24 power good / identification (pg/id) this pin provides an indication that the module?s converters are working, and ca n also be used to identify the factory set output voltage of the module. the pg/id pin goes high to the level of the output voltage (vo) to indicate that the module is operating and delivering power. the output goes low if the converters stop operating due to a fault such as an over temperature or overvoltage condition. the pg/id pin will al so go low if the module is disabled via the enable pin or under light load condition. the resistance between the pg/id pin and the +ve output of the module can be used to identify the module with no power applied according to the table: clock signals (clk in, clk out) the module?s internal clock is accurate and stable over its full operating range and synchronization is not normally required, but it can reduce noise in paralleled systems. clock signals can be wired in series (the clk out pin of one module to the clk in pin of the next etc) in which case all the modules will be synchronized with the first module in the chain. alternatively, an external clock signal of 5vpk-pk at 800khz 10% can be connected to the clk in pins of all the modules. if the clock input to any module fails, the module will automatically switch back to its internal clock and will continue to operate normally. the clk in and cl k out signals are ac coupled, so any module can cloc k another module regardless of polarity.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 28 of 47 mar 2007 - revision 05 basic operation and features (continued) current share (cshare) to ensure that all modules in a parallel system accurately share current, the c share pins on each module should be connected together. the voltage on the c share pins represents the average load current per module. each module compares this average with its own current and adjusts its output voltage to correct the error. in this way the module maintains accurate current sharing. n ote: the ?sense and +sense pins of each module must also be connected together to ensure accurate current sharing. current monitoring (c mon) the c mon pin provides an indication of the amount o f current supplied by the module. the output of the c mon p in is a current source proportional to the output current o f the module, where 0.2 to 1ma = 20 to 100% iorated. the c mon output can be paralleled with c mon outputs from other modules to indicate the total current supplied in a paralleled system.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 29 of 47 mar 2007 - revision 05 basic operation and features (continued) temperature monitoring (temp mon) the temp mon pin provides an indication of the module?s internal temperature. the voltage at the temp mon pin is proportional to the temperature o f the module baseplate at 10mv per c, where: module temperature ( c) = (vtemp mon x 100) ? 273 the temperature monitor signal can be used by thermal management systems (e.g. to control a variable speed fan). it can also be used for overtemperature warning . overtemperature protection (otp) if the module?s baseplate temperature exceeds 110 c, the module will be latched. module will operate back normally once the temperature drop below 100 c i 2 c digital control (dcs, i 2 c clk, i 2 c data) the module shall be capable to be controlled by i 2 c interface, which is smbus compatible, via i 2 c clk and i 2 c data pins. these two pins share the same pin location of clim adj and v adj pins respectively. digital control is selected when digital control select (dcs) pin voltage is between 2v - 4v. when digital control is selected, analog adjust pin function is disabled. dcs signal shall only be applied when the module is p owered off or disabled. an external 10k pull-up resisto r is necessary for each i 2 c clk, and i 2 c data pin, for 100khz i 2 c bus frequency.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 30 of 47 mar 2007 - revision 05 basic operation and features (continued) i 2 c communication protocol command word command word is sent by master system to inform slave device that what kind of operation the master like to do. it is a 16-bit data. bit 0 to bit 9 indicate the data need to transfer (e.g. the value of ov_adj). as there are two different lengths of data, one is 8-bit and the other is 10 -bit. so, if 10-bit data is transmitting/ receiving, whole 10 bits (data9 ? data0) will be used. in 8 bits case, only the least significant 8 bits (data7 ? data0) will be used. the two bits (data9 and data8) will be cleared. the 5 bits (reg4 ? reg0) indicate which command needs to. when the master requests data from the slave, the data9-data0 bits should be cleared. and during setting the four information items (model name, serial no., firmware version, model revision), data9-data8 should be cleared and is followed by the actual data. the format of the 16-bits command word is as follow: the dsr (data set read) bit contro ls read/write of data. if the master send a 0 (write operation) for this bit, the slave device will get the command register and data. and then set the value of the corresponding command register. if the master sends a 1 (read operation) for this bit, the slave device will get the current valu e of the corresponding command register and send it to the master. the table below shows the register mapping: command register coding (reg4 ? reg0) model_no (read/write*) 00000 serial_no (read/write*) 00001 firmware_ver (read/write*) 00010 model_rev (read/write*) 00011 slave_address (read/write) 00100 ovp_adj (read/write) 00101 v_adj (read/write) 00110 clim_adj (read/write) 00111 tmon (read only) 01000 vout (read only) 01001 cmon (read only) 01010 reset (write only) 01111 lock (write only*) 10000 unlock (write only*) 10001 rec_alp (write only) set reset 10010 10011 rec_alp state (read only) 10100 * remark: write functions only used to production. dsr reg4 data8 data9 reg0 reg1 reg2 reg3 data7 data6 data0 data1 data2 data3 data4 data5 bit 15 bit 7 bit 8 bit 0
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 31 of 47 mar 2007 - revision 05 i 2 c communication protocol (continued) data transfer structure on i2c bus terms description no. of bits stt start bit 1 sadd slave address 8 ack acknowledge 1 bt-h higher byte 8 bt-l lower byte 8 std(1 st , 2 nd ,?n th ) string of bytes(1 st byte, 2 nd byte,??n th byte) 8 stp stop bit 1 in the block diagram below, grey boxes indicate mast er-send signal, white boxes indicate slave-send signal. 2.1 set data to slave procedure: 1. the master device gives a start condition via sda. 2. master sends the 8-bit slave address in which bit 0 of it s hould be 0 (0 indicate a write condition to slave) via sda. 3. the addressed slave device gives ou t an acknowledge signal via sda. 4. the master sends the high byte of command code via sda. 5. the slave gives out acknowledge signal via sda. 6. the master sends the low byte of command code via sda. 7. slave gives out acknowledge signal after receiving the last byte. 8. master gives a stop condition vi a sda to stop the transaction. slave master sda a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 scl salve address command byte (high) command byte (low) start bit stop bit wait for ack. signal fig 1.1 scl and sda si gnal in write mode. s sadd ack bt-h (command) ack bt-l (command) ack stp fig 1.2 block diagram of write mode.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 32 of 47 mar 2007 - revision 05 2.2 read data from slave (2-byte data ) procedure: 1. the master device gives out a start condition on sda. 2. master sends the 8 bits slave address which bit 0 of it sh ould be 0 (0 indicates write mode for slave) via sda. 3. the addressed slave device gives back acknowledge signal via sda. 4. master sends out the high byte of the 2-bytes command word. 5. slave device gives back acknowledge signal again. 6. master sends out the low byte of the 2-bytes command word. 7. slave device gives back acknowledge signal again. 8. master sends out a stop condition to prepare for the next transaction. 9. master gives out a start condition again for the next transaction. 10. master sends the 8 bits slave address which bit 0 of it should be 1(1 indicates read mode for slave) via sda. scl sda a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 salve address command byte (high) command byte (low) start bit wait for ack. signal stop bit sda a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 scl salve address data byte receive (high) data byte receive (low) start bit give back ack. signal stop bit give back no ack. signal fig. 2.1 scl and sda signal of read mode (2 bytes of data read). s sadd ack bt-h (command) ack bt-l (command) ack stp s sadd ack bt-h (data) ack bt-l (data) ack stp fig. 2.2 block diagram of read mode (2 bytes of data read).
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 33 of 47 mar 2007 - revision 05 11. slave give back an acknowledge signal. 12. slave then sends out the high byte of desired data. 13. master gives back acknowledge signal to slave. 14. slave sends the low byte of the desired data. 15. master gives back acknowledge signal and sends out a stop condition to close the transaction. 2.3 read data from slave (string of data) procedure: 1. the master device gives out a start condition on sda. 2. master sends the 8 bits slave address which bit 0 of it sh ould be 0 (0 indicates write mode for slave) via sda. 3. the addressed slave device gives back acknowledge signal via sda. 4. master sends out the high byte of the 2-bytes command word. 5. slave device gives back acknowledge signal again. 6. master sends out the low byte of the 2-bytes command word. 7. slave device gives back acknowledge signal again. sda a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 scl salve address command byte (high) command byte (low) start bit stop bit give back ack. signal sda a7 a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 ?? scl ?? salve address string data (1 s t ) receive string data (last byte) receive start bit give back ack. signal give back no ack. signal stop bit fig 3.1 scl and sda signal of read mode (string of data). s sadd ack bt-h (command) ack bt-l (command) ack stp s sadd ack std(1 st ) ack std(2 nd ) ack stp ?? std(n th ) ack fig 3.1 block diagram of read mode (string of data).
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 34 of 47 mar 2007 - revision 05 8. master sends out a stop condition to prepare for the next transaction. 9. master gives out a start condition again for the next transaction. 10. master sends the 8 bits slave address which bit 0 of it should be 1(1 indicates read mode for slave) via sda. 11. slave give back an acknowledge signal. 12. slave then sends out the first byte of desired data. 13. master gives back acknowledge to slave. 14. repeat 12 and 13 until the end of bytes. 15. master gives back acknowledge signal and sends out a stop condition to close the transaction.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 35 of 47 mar 2007 - revision 05 basic operation and features (continued) digital control demo user guide this demo program is developed to test and evaluate i 2 c control features of aif-300 dc/dc modules. equipment required: 1. one or more modules of aif-300 series. 2. pc ? module interface hardware. 3. pc (with windows 98 / me inside) hardware setup: the picture shown below is the setup of the hardware. pc - i2c
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 36 of 47 mar 2007 - revision 05 digital control demo user guide (continued) software setup : 1. click on the program ?ampss68vxx.exe?. then following dialog box shows: 2. click on ?setup?, to setting ?parallel port address? value, ?pulse constant? value, and ?model series? to select model.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 37 of 47 mar 2007 - revision 05 a.) click ?parallel port address? , a new dialog box sh ows and enter the right value into it and click ?ok?: b.) click ?pulse constant? , set the desired pulse constant value into the dialog box below and click ?ok?: c.) click ?model series? , select the model on the dialog box below and click ?confirm?:
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 38 of 47 mar 2007 - revision 05 3. select module: enter the slave address of the module that you want to control: note: ?0? and ?1? are the globe address of mmiic. so, it can on ly perform ?write? function wh en the uut address is set to 0 or 1. 4. write value: a) click on the circle beside the desired item that needs to be changed its value.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 39 of 47 mar 2007 - revision 05 after choosing the desired item, click on ?write? below the items. then a new dialog box shows (except ?reset? option). fill the box with the new value and click ?ok?. or click ?cancel ? to cancel this operation. b). click the item ?rec_alp?, and then click ?write ? to set the register ?rec_alp? state as shows: 5. read value:
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 40 of 47 mar 2007 - revision 05 double click on the item box to read the corresponding value: 6. exit program: click on ?setup? and choose ?exit? to exit the program.
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 41 of 47 mar 2007 - revision 05 basic operation and features (continued) pc-i2c interface circuit diagram
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 42 of 47 mar 2007 - revision 05 basic operation and features (continued) recommended opto isolation circuit
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 43 of 47 mar 2007 - revision 05 parallel operation with opto isolation loa d +sense -sense +o/p -o/p +i/p -i/p 7 6 1 12 + clk out +sense -sense +o/p -o/p +i/p -i/p 7 6 1 12 clk in c share c share + vdc in + - dcs 2v~4v dcs 2v~4v i2c opto isolation i2c clk i2c data i2c gnd i2c opto isolation i2c clk i2c data i2c gnd i2c scl i2c sda i2c rtn
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 44 of 47 mar 2007 - revision 05 basic operation and features (continued) digital control the module shall be capable to be controlled by i2c in terface, which is smbus compatible, via i2c clk and i2c data pins. these two pins share the same pin location of clim adj and v adj pins respectively. digital control is selected when digital control select (dcs) pin voltage is between 2v - 4v. refer to appendix g for detailed i2c communication protocol format in this module. there are 8 command registers for read operation, 4 command registers for read/write operation and 2 command register for write operation. command register description model_no (read only) read model name of the module serial_no (read only) read serial number on bar code label firmware_ver (read only) read firmware version model_rev (read only) read model revision slave_address (read/wr ite) read or set slave address of the module ovp_adj (read/write) read or set overvoltage protection threshold of the module v_adj (read/write) read or set output voltage of the module clim_adj (read/write) read or set current limit protection threshold of the module tmon (read only) read baseplate temperature of the module vout (read only) read output voltage of the module cmon (read only) read output current of the module reset (write only) reset all control parameters to factory setting rec_alp (write only) when register is se t, mcu will automatically save current ?ovp_adj?, ?v_adj? and ?clim_adj? values to eeprom, and use these values again when unit is powered on next time. when register is reset, the mcu will use the alp nominal setting every time when unit is powered on. default is "set." rec_alp_state (read only) read register rec_alp state is ?set ? or ?reset? digital data conversion each control and monitoring data is in 10-bit format. the data conversion formulae are as follows. ovp_adj: the range of the ovp_adj can be adju sted from 115% to 145% of vo(nom ). the received/transmitted data is calculated by the equation below. receive data (from module to pc): input data: mcu ovpadj (integer) outputdata: ovpadj% (round to 1decimal place) % 30 205 ovpadj mcu % 145 ovpadj% ? =
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 45 of 47 mar 2007 - revision 05 transmit data (from pc to module): input data: ovpadj (rou nd to 1 decimal place) outputdata: mcu ovpadj (integer) 205 30% ovpadj% - 145% ovpadj mcu = v_adj: 1. the range of the v_adj can be adjusted from 80% to 125% of vo (nom). the received/transmitted data is calculated by the equation below. receive data (from module to pc): input data: mcu vadj (integer) outputdata: vadj% (round to 1decimal place) % 40 410 ovpadj mcu % 80 vadj% + = transmit data (from pc to module): input data: vadj (rou nd to 1 decimal place) outputdata: mcu vadj (integer) 410 40% 80% - vadj% vadj mcu = 2. v_adj range between 50% to 115% module (below 5vo model): the range of the v_adj can be adju sted from 50% to 115% of vo (nom). the received/transmitted data is calculated by the equation below. a). vadj between 50% ~100% receive data (from module to pc): input data: mcu vadj (integer) output data: vadj% (round to 1decimal place) % 50 205 vadj mcu % 50 vadj% + = transmit data (from pc to module): input data: vadj (rou nd to 1 decimal place) output data: mcu vadj (integer) 205 50% 50% - vadj% vadj mcu =
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 46 of 47 mar 2007 - revision 05 b). vadj range between 100% ~115%. receive data (from module to pc): input data: mcu vadj (integer) output data: vadj% (round to 1decimal place) % 10 205 205 - vadj mcu % 100 vadj% + = transmit data (from pc to module): input data: vadj (rou nd to 1 decimal place) output data: mcu vadj (integer) 205 10% 90% - vadj% vadj mcu = clim_adj: the range of the clim_adj can be adjusted from 0% to 102.5% or 110% of rated io. the received/transmitted data is calculated by the equation below. receive data (from module to pc): input data: mcu climadj (integer) outputdata: climadj% (round to 1decimal place) case1: mcu climadj 841 % 5 . 102 840 climadj mcu climadj% = case2: mcu climadj >= 841 % 110 climadj% = 110% 840 102.5% climadj% climadj mcu = case2: climadj% >= 110% 841 climadj mcu =
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 47 of 47 mar 2007 - revision 05 tmon: baseplate temperature monitoring is a r ead only data. it is ranged from -40 o c to 120 o c. the temperature of module can be calculated by the equation below: receive data (from module to pc): input data: mcu tmon (integer) output data: baseplate temperatur e in c (round to 1 decimal place) 273 500 1024 tmon mcu c in e temperatur baseplate ? = vout: output voltage is a read only data. the output voltage can be calculated by the equation below: receive data (from module to pc): input data: mcu vout (integer) output data: output voltage in %vonom (round to 1 decimal place) % 100 _ vout mcu %vonom in voltage output = ref vo module vo_ref aif120y300-l/n-l/-ntl 369 aif120f300-l/n-l/-ntl 676 aif80a300-l/n-l/-ntl 813 aif50b300-l/n-l/-ntl 820 aif40c300-l/n-l/-ntl 830 aif25h300-l/n-l/-ntl 820 cmon: current monitoring is a read only data. it is ranged from 0% to 100% of rated io. the output current of module can be calculated by the equation below: receive data (from module to pc): input data: mcu cmon (round to 1 decimal place) outputdata: output current monitor in %iomax (integer) % 100 614 cmon mcu %iomax in monitor current output =
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 48 of 47 mar 2007 - revision 05 default factory setting control data factory setting slave address 0010100000 (a0h = 160) (8 bit addressing) ovp_adj 0011001101 (00cdh = 205) (115% of vo ) v_adj 0011001101 (00cdh = 205) (100% of vo (nom) ) clim_adj 1111111111 (0349h = 841) (110% of rated io)
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 49 of 47 mar 2007 - revision 05 mechanical specifications parameter device symbol min typ max unit dimension all l - 4.60 [116.8] - in [ mm ] w - 2.40 [61.0] - in [ mm ] h - 0.50 [12.7] - in [ mm ] weight all - 250 - g [oz] pin assignment input output control pins 31. positive 21. positive 1. aux 32. negative 22. positive 2. temp mon 23. positive 3. c mon 24. positive 4. c share 25. negative 5. clk out 26. negative 6. clk in 27. negative 7. pg/id 28. negative 8. c lim adj/i 2 c clk 9. ovp adj/dcs 10. v adj/1 2 c data 11. enable 12. - sense part numbering scheme o/p current o/p voltage vin enable suffix aif xxx x 300 x nt suffix ?aif? = astec integrated full brick series 120 = 120a 120 = 120a 80 = 80a 50 = 50a 40 = 40a 25 = 25a y = 1.8v f = 3.3v a = 5.0v b = 12v c = 15v h = 24v 300v dc ?n? = negative logic enable no suffix = positive logic enable ?-nt? = non-thread mounting hole ?-l? or ?l? = rohs compli ance
technical reference notes aif 300vin dc-dc series model: aif 300v series sheet 50 of 47 mar 2007 - revision 05 mechanical specifications (continued) figure 54. mechanical outline. please call 1-888-41-astec for further inquiries or visit us at www.astecpower.com

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