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isolated, precision half-bridge driver, 0.1 a output adum1234 rev. 0 information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2007 analog devices, inc. all rights reserved. features isolated high-side and low-side outputs high side or low side relative to input: 700 v peak high-side/low-side differential: 700 v peak 0.1 a peak output current cmos input threshold levels high frequency operation: 5 mhz maximum high common-mode transient immunity: >75 kv/s high temperature operation: 105c wide body, rohs compliant, 16-lead soic ul1577 2500 v rms input-to-output withstand voltage applications isolated igbt/mosfet gate drives plasma displays industrial inverters switching power supplies general description the adum1234 1 is an isolated, half-bridge gate driver that employs the analog devices, inc. i coupler? technology to provide independent and isolated high-side and low-side outputs. combining high speed cmos and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to optocoupler-based solutions. by avoiding the use of leds and photodiodes, this i coupler gate drive device is able to provide precision timing characteristics not possible with optocouplers. furthermore, the reliability and performance stability problems associated with optocoupler leds are avoided. in comparison to gate drivers employing high voltage level translation methodologies, the adum1234 offers the benefit of true, galvanic isolation between the input and each output. each output can be operated up to 700 v peak relative to the input, thereby supporting low-side switching to negative voltages. the differential voltage between the high side and low side can be as high as 700 v peak . as a result, the adum1234 provides reliable control over the switching characteristics of igbt/mosfet configurations over a wide range of positive or negative switching voltages. functional block diagram encode decode encode decode disable nc nc v dd1 nc v ddb v ob gnd b 5 6 7 8 12 11 gnd 1 nc 4 13 v dd1 gnd a 3 14 v ib v oa 2 15 v ia v dda 1 16 10 9 06920-001 nc = no connect adum1234 figure 1. 1 protected by u.s. patents 5,952,849; 6, 873,065; 7,075,329. other patents pending.
adum1234 rev. 0 | page 2 of 12 table of contents features .............................................................................................. 1 ? applications ....................................................................................... 1 ? general description ......................................................................... 1 ? functional block diagram .............................................................. 1 ? revision history ............................................................................... 2 ? specifications ..................................................................................... 3 ? electrical characteristics ............................................................. 3 ? package characteristics ............................................................... 4 ? regulatory information ............................................................... 4 ? insulation and safety-related specifications ............................ 4 ? recommended operating conditions .......................................4 ? absolute maximum ratings ............................................................5 ? esd caution...................................................................................5 ? pin configuration and function descriptions ..............................6 ? typical perfomance characteristics ................................................7 ? application notes ..............................................................................8 ? common-mode transient immunity ........................................8 ? insulation lifetime ........................................................................9 ? outline dimensions ....................................................................... 10 ? ordering guide .......................................................................... 10 ? revision history 7/07revision 0: initial version
adum1234 rev. 0 | page 3 of 12 specifications electrical characteristics 4.5 v v dd1 5.5 v, 12 v v dda 18 v, 12 v v ddb 18 v. all minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. all typical specifications are at t a = 25c, v dd1 = 5 v, v dda = 15 v, v ddb = 15 v. all voltages are relative to their respective ground s . table 1. parameter symbol min typ max unit test conditions dc specifications input supply current, quiescent i ddi(q) 3.0 4.2 ma output supply current a or output supply current b, quiescent i dda(q) , i ddb(q) 0.3 1.2 ma input supply current, 10 mbps i ddi(10) 6.0 9.0 ma output supply current a or output supply current b, 10 mbps i dda(10) , i ddb(10) 16 22 ma c l = 200 pf input currents i ia , i ib , i disable ?10 +0.01 +10 a 0 v v ia , v ib , v disable v dd1 logic high input threshold v ih 0.7 v dd1 v logic low input threshold v il 0.3 v dd1 v logic high output voltages v oah ,v obh v dda ? 0.1, v ddb ? 0.1 v dda , v ddb v i oa , i ob = ?1 ma logic low output voltages v oal ,v obl 0.1 v i oa , i ob = +1 ma output short-circuit pulsed current 1 i oa(sc) , i ob(sc) 100 ma switching specifications minimum pulse width 2 pw 100 ns c l = 200 pf maximum switching frequency 3 10 mbps c l = 200 pf propagation delay 4 t phl , t plh 97 124 160 ns c l = 200 pf change vs. temperature 100 ps/c c l = 200 pf pulse width distortion, |t plh ? t phl | pwd 8 ns c l = 200 pf channel-to-channel matching, rising or falling edges 5 5 ns c l = 200 pf channel-to-channel matching, rising vs. falling edges 6 13 ns c l = 200 pf part-to-part matching, rising or falling edges 7 55 ns c l = 200 pf, input t r = 3 ns part-to-part matching, rising vs. falling edges 8 63 ns c l = 200 pf, input t r = 3 ns output rise/fall time (10% to 90%) t r /t f 25 ns c l = 200 pf 1 short-circuit duration less than 1 second. 2 the minimum pulse width is the shortest pulse width at which the specified timing parameters are guaranteed. 3 the maximum switching frequency is the maximum signal frequenc y at which the specified timin g parameters are guaranteed. 4 t phl propagation delay is measured from the 50% level of the falling edge of the v ix signal to the 50% level of the fallin g edge of the v ox signal. t plh propagation delay is measured from the 50% level of the rising edge of the v ix signal to the 50% level of the rising edge of the v ox signal. 5 channel-to-channel matching, rising or falling edges, is the mag nitude of the propagation delay diffe nnel s of two different parts when one input a rising edge and the other input is a falling edge. the supply voltages, temperat ures, and loads of each part are equal. rence between two channel s of the same part when the inputs are either both rising or falling edges. the supply voltages and the loads on each channel are equal. 6 channel-to-channel matching, rising vs. falling edges, is the magnitude of the propagation delay difference b etween two channe ls of the same part when one input is a rising edge and the other input is a falling edge. the supply voltages and loads on each channel are equal. 7 part-to-part matching, rising or falling edges, is the magnitude of the propagation delay difference between the same channels of two different parts when the inputs are either both rising or falling edges. the supply voltages, temperatures, and loads of each part are equal. 8 part-to-part matching, rising vs. falling edges, is the magnitude of the propagation delay difference between the same cha is
adum1234 rev. 0 | page 4 of 12 package characteristics table 2. parameter symbol min typ max unit test conditions resistance (input-to-output) 1 r i-o 10 12 capacitance (input-to-output) 1 c i-o 2.0 pf f = 1 mhz input capacitance c i 4.0 pf ic junction-to-ambient thermal resistance ja 76 c/w 1 the device is considered a 2-terminal device: pin 1 through pin 8 are shorted together, and pin 9 through pin 16 are shorted t ogether. regulatory information the adum1234 has been approved by the organization listed in table 3 . refer to tabl e 7 and the insulation lifetime section for details regarding recommended maximum working voltages for spec ific cross-isolation wavefo rms and insulation levels. table 3. ul recognized under the 1577 component recognition program 1 single/basic insulation, 2500 v rms isolation voltage 1 in accordance with ul1577, each adum1234 is proof tested by applying an insulation test voltage 3000 v rms for 1 second (cur rent leakage detectio n limit = 5 a). insulation and safety-related specifications table 4. parameter symbol value unit conditions rated dielectric insulation voltage 2500 v rms 1 minute duration minimum external air gap (clearance) l(i01) 7.7 min mm measured from input termin als to output terminals, shortest distance through air minimum external tracking (creepage) l(i02) 8.1 min mm measured from input termin als to output terminals, shortest distance path along body minimum internal gap (internal clearance) 0.017 min mm insulation distance through insulation tracking resistance (comparative tracking index) cti >175 v din iec 112/vde 0303 part 1 isolation group iiia material group (din vde 0110, 1/89, table 1) recommended operat ing conditions table 5. parameter symbol min max unit operating temperature t a ?40 +105 c input supply voltage 1 v dd1 4.5 5.5 v output supply voltages 1 v dda , v ddb 12 18 input signal rise and fall times 100 ns common-mode transient immunity, input-to-output 2 ?75 +75 kv/s common-mode transient immunity, between outputs 2 ?75 +75 kv/s transient immunity, supply voltages 2 ?75 +75 kv/s 1 all voltages are relative to their respective ground. 2 see the section for additional data. common-mode transient immunity
adum1234 rev. 0 | page 5 of 12 absolute maximum ratings ambient temperature = 25c, unless otherwise noted. table 6. parameter rating storage temperature (t st ) ?55c to +150c ambient operating temperature (t a ) ?40c to +105c input supply voltage (v dd1 ) 1 ?0.5 v to +7.0 v output supply voltage 1 (v dda , v ddb ) ?0.5 v to +27 v input voltage 1 (v ia , v ib ) ?0.5 v to v ddi + 0.5 v output voltage 1 v oa ?0.5 v to v dda + 0.5 v v ob ?0.5 v to v ddb + 0.5 v input-to-output voltage 2 ?700 v peak to +700 v peak output differential voltage 3 700 v peak output dc current (i oa , i ob ) ?20 ma to +20 ma common-mode transients 4 ?100 kv/s to +100 kv/s 1 all voltages are relative to their respective ground. 2 input-to-output voltage is defined as gnd a ? gnd 1 or gnd b ? gnd 1 . 3 output differential voltage is defined as gnd a ? gnd b . 4 refers to common-mode transients across any insulation barrier. common-mode transients exceeding the absolute maximum ratings may cause latch-up or permanent damage. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution table 7. maximum continuous working voltage 1 parameter max unit constraint ac voltage, bipolar waveform 565 v peak 50-year minimum lifetime ac voltage, unipolar waveform v peak basic insulation 700 v peak analog devices recommended maximum working voltage dc voltage basic insulation 700 v peak analog devices recommended maximum working voltage 1 refers to continuous voltage magnitude imposed across the isolation barrier. see the insulation lifetime section for more details.
adum1234 rev. 0 | page 6 of 12 pin configuration and fu nction descriptions v ia 1 v ib 2 v dd1 3 gnd 1 4 v dda 16 v oa 15 gnd a 14 nc 13 disable 5 nc 12 nc 6 v ddb 11 nc 7 v ob 10 v dd1 8 gnd b 9 nc = no connect adum1234 top view (not to scale) 0 6920-002 figure 2. pin configuration table 8. adum1234 pin function descriptions pin no. mnemonic description 1 v ia logic input a. 2 v ib logic input b. 3 1 , 8 1 v dd1 input supply voltage, 4.5 v to 5.5 v. 4 gnd 1 ground reference for input logic signals. 5 disable input disable. disables the isolator inputs and refresh circuits. outputs take on default low state. 6, 7, 12 2 , 13 2 nc no connect. 9 gnd b ground reference for output b. 10 v ob output b. 11 v ddb output b supply voltage, 12 v to 18 v. 14 gnd a ground reference for output a. 15 v oa output a. 16 v dda output a supply voltage, 12 v to 18 v. 1 pin 3 and pin 8 are internally connected. connecting both pins to v dd1 is recommended. 2 pin 12 and pin 13 are floating and should be left unconnected. table 9. truth table (positive logic) v ia /v ib input v dd1 state disable v oa /v ob output notes h powered l h l powered l l x unpowered x l output returns to input state within 1 s of v dd1 power restoration. x powered h l
adum1234 rev. 0 | page 7 of 12 typical perfomance characteristics data rate (mbps) 10 02468 input current (ma) 7 5 6 4 3 2 1 0 06920-006 figure 3. typical input supply current variation with data rate data rate (mbps) 10 02468 output current (ma) 18 16 14 12 8 4 10 6 2 0 06920-007 figure 4. typical output supply current variation with data rate temperature (c) 120 ?40 0 20 ?20 40 60 80 100 propa g a tion del a y (ns) 120 115 110 105 100 06920-008 figure 5. typical propagation delay variation with temperature output supply voltage (v) 18 12 15 propa g a tion del a y (ns) 115 114 113 112 111 110 109 ch. b, falling edge ch. a, falling edge ch. a, rising edge ch. b, rising edge 06920-009 figure 6. typical propagation delay variation with output supply voltage (input supply voltage = 5.0 v) ch. b, falling edge ch. a, falling edge ch. a, rising edge ch. b, rising edge input supply voltage (v) 5.5 4.5 5.0 propa g a tion del a y (ns) 115 114 113 112 111 110 109 06920-010 figure 7. typical propagation delay variation with input supply voltage (output supply voltage = 15.0 v)
adum1234 rev. 0 | page 8 of 12 application notes common-mode transient immunity in general, common-mode transients consist of linear and sinusoidal components. the linear component of a common- mode transient is given by v cm, linear = (v/ t ) t where v / t is the slope of the transient shown in figure 11 and figure 12 . the transient of the linear component is given by dv cm / dt = v/ t figure 8 characterizes the ability of the adum1234 to operate correctly in the presence of linear transients. the data is based on design simulation and is the maximum linear transient magnitude that the adum1234 can tolerate without an operational error. this data shows a higher level of robustness than what is listed in table 5 because the transient immunity values obtained in table 5 use measured data and apply allowances for measurement error and margin. temperature (c) 100 ?40 0 40 80 ?20 20 60 transient immunity (kv/s) 400 300 200 350 250 150 100 50 0 worst-case process variation best-case process variation 06920-011 figure 8. transient immunity (l inear transients) vs. temperature the sinusoidal component (at a given frequency) is given by v cm, sinusoidal = v 0 sin(2ft ) where: v 0 is the magnitude of the sinusoidal. f is the frequency of the sinusoidal. the transient magnitude of the sinusoidal component is given by dv cm / dt = 2f v 0 figure 9 and figure 10 characterize the ability of the adum1234 to operate correctly in the presence of sinusoidal transients. the data is based on design simulation and is the maximum sinusoidal transient magnitude (2f v 0 ) that the adum1234 can tolerate without an operational error. values for immunity against sinusoidal transients are not included in table 5 because measurements to obtain such values have not been possible. frequency (mhz) 2000 0 500 1000 1500 1750 250 750 1250 transient immunity (kv/s) 300 200 100 250 150 0 50 worst-case process variation best-case process variation 06920-012 figure 9. transient immunity (sinusoidal transients), 27c ambient temperature frequency (mhz) 2000 0 500 1000 1500 1750 250 750 1250 transient immunity (kv/s) 250 100 150 200 50 0 worst-case process variation best-case process variation 06920-013 figure 10. transient immunity (sinusoidal transients), 100c ambient temperature gnd 1 v dd1 v t v t 5v gnd 1 v dd1 15v 15v gnd a and gnd b v dda and v ddb 5v gnd a and gnd b v dda and v ddb 15v 15v 06920-003 figure 11. common-mode transient immu nity waveforms, input to output gnd a /gnd b v ddb /v dda v t v t 15v gnd a /gnd b v dda /v ddb 15v 15v gnd a /gnd b v dda /v ddb 15v gnd b /gnd a v ddb /v dda 15v 15v 06920-004 figure 12. common-mode transient immunity waveforms, between outputs
adum1234 rev. 0 | page 9 of 12 gnd a /gnd b v dda /v ddb v dda / v ddb gnd a /gnd b v dd t 06920-005 figure 13. transient immunity waveforms, output supplies insulation lifetime all insulation structures eventually break down when subjected to voltage stress over a sufficiently long period. the rate of insulation degradation depends on the characteristics of the voltage waveform applied across the insulation. in addition to the testing performed by the regulatory agencies, analog devices conducts an extensive set of evaluations to determine the lifetime of the insulation structure within the adum1234. analog devices performs accelerated life testing using voltage levels higher than the rated continuous working voltage. acceleration factors for several operating conditions are determined. these factors allow calculation of the time to failure at the actual working voltage. table 7 summarizes the peak voltages for 50 years of service life for a bipolar ac operating condition and the maximum analog devices recommended working voltages. in many cases, the approved working voltage is higher than the 50-year service life voltage. operation at these high working voltages can lead to shortened insulation life in some cases. the insulation lifetime of the adum1234 depends on the voltage waveform type imposed across the isolation barrier. the i coupler insulation structure degrades at different rates depending on whether the waveform is bipolar ac, unipolar ac, or dc. figure 14 , figure 15 , and figure 16 illustrate these different isolation voltage waveforms. bipolar ac voltage is the most stringent environment. the goal of a 50-year operating lifetime under the ac bipolar condition determines the maximum working voltage recommended by analog devices. in the case of unipolar ac or dc voltage, the stress on the insu- lation is significantly lower. this allows operation at higher working voltages while still achieving a 50-year service life. the working voltages listed in table 7 can be applied while maintaining the 50-year minimum lifetime provided the voltage conforms to either the unipolar ac or dc voltage cases. any cross insulation voltage waveform that does not conform to figure 15 or figure 16 should be treated as a bipolar ac waveform and its peak voltage should be limited to the 50-year lifetime voltage value listed in table 7 . note that the voltage presented in figure 15 is shown as sinusoidal for illustration purposes only. it is meant to represent any voltage waveform varying between 0 v and some limiting value. the limiting value can be positive or negative, but the voltage cannot cross 0 v. 0v rated peak voltage 06920-014 figure 14. bipolar ac waveform 0v rated peak voltage 06920-015 figure 15. unipolar ac waveform 0v rated peak voltage 06920-016 figure 16. dc waveform
adum1234 rev. 0 | page 10 of 12 outline dimensions controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-013- aa 032707-b 10.50 (0.4134) 10.10 (0.3976) 0.30 (0.0118) 0.10 (0.0039) 2.65 (0.1043) 2.35 (0.0925) 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 0 . 7 5 ( 0 . 0 2 9 5 ) 0 . 2 5 ( 0 . 0 0 9 8 ) 45 1.27 (0.0500) 0.40 (0.0157) c oplanarity 0.10 0.33 (0.0130) 0.20 (0.0079) 0.51 (0.0201) 0.31 (0.0122) seating plane 8 0 16 9 8 1 1.27 (0.0500) bsc figure 17. 16-lead standard small outline package [soic_w] wide body (rw-16) dimensions shown in millimeters and (inches) ordering guide model no. of channels output peak current (a) output voltage (v) temperature range package description package option adum1234brwz 1 2 0.1 15 ?40c to +105c 16-lead soic_w rw-16 adum1234brwz-rl 1 , 2 2 0.1 15 ?40c to +105c 16-lead soic_w rw-16 1 z = rohs compliant part. 2 13-inch tape and reel option (1,000 units).
adum1234 rev. 0 | page 11 of 12 notes
adum1234 rev. 0 | page 12 of 12 notes ?2007 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d06920-0-7/07(0)

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