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Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Features parallel operation with current share, up to 5 units (up to 276 watts)
* Operating range -55 to +100C * Input voltage 160 to 400 VDC
* Transient protection 450 V for 50 ms * Fully isolated, magnetic feedback * Fixed high frequency switching * Remote sense on single models * Sync In and Sync Out
* Inhibit primary side and secondary side * Indefinite short circuit protection
VDC Output
single
MODELS
* High power density, up to 85% efficiency
5 12 15 28
Dual
5 12 15
description
The MHP270 SeriesTM DC/DC converters provide up to 65 watts of output power over -55C to +100C temperature range. MHP270 models operate from a MIL-STD-704 nominal 270-volt DC power bus with 160 to 400 VDC continuous operation with surges to 450 volts. Isolated outputs include 5, 12, 15, and 28 VDC singles and 5, 12 and 15 VDC duals. Parallel operation for all loading conditions is supported without any requirement for external components. The converters are available with standard screening or "ES" screening MHP270 DC/DC converters are constant frequency, pulse width modulated switching power supplies which use a quasi-square wave, two-switch single-ended forward converter design. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. Up to five single output MHP270 converters may be used in parallel to power a single load by simply connecting the share pins of all units. Units in this configuration have an 85% current sharing accuracy over 35% load to full load conditions. MHP270 Series of converters feature a flexible synchronization scheme in which units may be synchronized to an external clock or to one another by using Sync In and Sync Out pins provided on each unit. MHP270 converters have a nominal switching frequency of 525 kHz, but may be synchronized at any frequency from 475 to 575 kHz. MHP270 converters meet a wide variety of military/aerospace performance and environmental specifications. Their continuous operation input voltage (160 to 400) meets the normal operating
limits of MIL-STD-704. The unit shuts down above approximately 425 volts, but it is rated to withstand a surge of up to 450 volts for 50 milliseconds. The units are built as fully hermetic thick film hybrids in our MIL-PRF-38534 certified facilities.
Features
Undervoltage lock-out - shuts down when the input line voltage falls below approximately 120 VDC to provide smooth initialization. Continuous short circuit protection - current limit set at approximately 125%. Soft-start - controlled start-up at turn-on, release from inhibit and recovery from load fault conditions. Remote sense - Sense lines increase the output voltage to compensate for IR drops in traces and wires. The voltage compensation can be up to a maximum of 10% of nominal output voltage to maintain tightly regulated voltage at the load.
Output VOltage OptiOns
The MHP270 Series converters are capable of providing other output voltage options in addition to those characterized on this datasheet. Contact your sales representative to discuss other output voltage options, www.interpoint.com/contacts.
us patents
Interpoint converters may use one or more of the following US patents 5,521,807, 5,694,303, and 5,631,822.
Crane Aerospace & Electronics Electronics Group (Interpoint Brand) POBox97005*RedmondWA98073-9705 425.882.3100*power@crane-eg.com www.interpoint.com
MHP270 Rev G - 20100517
Page 1 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Operating COnditiOns and CharaCteristiCs
input Voltage range * 160 to 400 VDC continuous * 450 VDC for 50 msec transient
synC and inhibit
sync *Sync In Input frequency 475 to 575 kHz. Duty cycle 40% min, 60% max Active low 0.8 V max Active high 4.5 V min, 10 V max Referenced to input common *Sync Out Referenced to input common
output power * 50 to 65 watts depending on model
lead soldering temperature (10 sec) * 300C storage temperature range (tc) * -65C to +150C
current limit * 125% of full load typical
output Voltage temperature coefficient * 100 ppm/C typical
case operating temperature (tc) * -55 to +100C full power
isolation * 100 megohm minimum at 500 V
conversion Frequency * Free run mode 525 kHz typical 475 kHz. min., 575 kHz max * External sync range: 475 to 575 kHz low line drop out *Vout drops 1% of nominal *Input voltage 155 VDC max
inhibit (inH1, inH2) *In Share (parallel mode) use a common inhibit signal for all converters *Active low (output disabled) INH1 referenced to input common Active low 0.8 V max Inhibit pin will source 15 mA max INH2 referenced to output common Active low 0.2 V max Inhibit pin will source 15 mA max * Active high (output enabled) Open collector Open pin voltage: INH1 = 12V typ, INH2 = 5 V typ
meChaniCal and envirOnmental
size (maximum) * 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) * See case U for dimensions. Weight (maximum) * 86 grams max
undervoltage lockout * Input voltage 110 VDC min
screening * Standard or ES. See Screening Table 1 for more information.
SINGLE OUTPUT MODELS CONNECTION DIAGRAM - SENSE
270 V
+ -
1 2 3 4 5 6
Positive Input Input Common INH2 INH1 Sync Out Sync In
Share 12 N/C 11 Pos. Sense 10 9 Sense Return 8 Output Common 7 Positive Output - + RL
Inhibit Sync In
REMOTE SENSE CONNECTION
Figure 1: sense COnneCtiOns
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MHP270 Rev G - 20100517
Page 2 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
pins not in use
Pin 1 2 3 4 5 6 7 8 9 10 11 12
Single Output Positive Input
pin out
Dual Output
inhibit (inH1, inH2) sync in share sync out
Leave unconnected Leave unconnected
Input Common
Positive Input
Inhibit 2 (INH2) Inhibit 1 (INH1) Sync Out Sync In
Input Common
Connect to input common Leave unconnected Must be connected to appropriate outputs
Inhibit 2 (INH2) Inhibit 1 (INH1) Sync Out Sync In
sense lines
Positive Output Sense Return
Output Common Positive Sense No connection Share
Positive Output
Output Common Negative Output No connection No connection Share
Angled corner indicates pin one.
1 2 3 4 5 6
12 11
TOP VIEW MHP (Pin side, marked side)
See case U for dimensions.
10 9 8 7
Figure 2: pin Out
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MHP270 Rev G - 20100517
Page 3 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
SINGLE OUTPUT MODELS CONNECTION DIAGRAM - PARALLEL
+ 270V -
Optional fuse
1 Positive Input
2 Input Common 3 INH2
4 INH1 MHP270 #1 8 5 Sync Out Output Common 6
Pos. Sense 10 Sense Return 9
7
Share 12 N/C 11
Sync In
Positive Output
INH2 Control
1 Positive Input 2 Input Common 3 INH2 4 INH1
5 Sync Out 6 Sync In
MHP270 #2
Pos. Sense 10 Sense Return 9 Output Common Positive Output
8 7
Share 12 N/C 11 + - RL
1 Positive Input 2 Input Common
INH1 Control
3 INH2 Pos. Sense 4 MHP270 #N Sense Return INH1 5 Sync Out Output Common 6 Sync In Positive Output
Share 12 N/C 11
10 9 8 7
* Dotted lines are optional connections * Sync in should be connected to input common if not used * Synchronizing the converters eliminates beat frequencies during current sharing (parallel operation) * From 2 to 5 converters can be paralleled for up to 276 watts of output power. * These converters are not designed for use in redundant systems * If deviating from this diagram, please consult our applications engineers: powerapps@crane-eg.com www.interpoint.com/contacts/technical_support +1.425.895.4016
Figure 3: parallel (Current sharing) COnneCtiOns
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MHP270 Rev G - 20100517
Page 4 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Model nuMbering key
Base Model Input Voltage Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) MHP 270 05 S / ES
On
the lines belOw, enter One seleCtiOn FrOm eaCh CategOry tO Determine the mODel number.
Model selection
CATEGORy
MHP270
Base Model and Input Voltage MHP270 is the only available selection Output Voltage 05, 12, 15, 28 05, 12, 15 Number of Outputs 1 s d
/
Screening 2 (STANDARD leave blank) es
SELECTION
Notes: 1. Number of Outputs: S is a single output and D is a dual output 2. Screening: For standard screening leave the screening option blank. For the ES screening option, insert the ES in the screening level option. For more information see Screening Tables 1.
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MHP270 Rev G - 20100517
Page 5 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Electrical Characteristics: 25C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
parameter Output VOltage Output Current Output pOwer Output ripple line regulatiOn lOaD regulatiOn 2 input VOltage input Current
2
MHP27005S
MIN 4.95 0 0 -- -- -- 160 -- -- -- -- -- 76 TyP 5.00 -- -- -- -- -- 270 -- -- -- -- -- -- -- -- -- -- MAX 5.05 10 50 50 50 50 400 450 20 8 15 50 -- 30 300 300 1000
MHP27012S
MIN 11.88 0 0 -- -- -- 160 -- -- -- -- -- 81 -- -- -- -- TyP 12.00 -- -- -- - -- 270 -- -- -- -- -- -- -- -- -- -- MAX 12.12 5 60 50 120 120 400 450 20 10 15 50 -- 35 700 500 500
COnDitiOns Vin = 160 Vin = 160 10
tO tO
units VDC a w mV p-p mV mV VDC V mA
400 VDC 400 VDC
khz
- 2 mhz
Vin = 160 tO 400 VDC nO lOaD tO Full COntinuOus TRANSIENT 50 msec. 1, 3 nO lOaD inhibiteD-inh1 inhibiteD-inh2
input ripple Current eFFiCienCy lOaD Fault step lOaD respOnse CapaCitiVe lOaD
1
10
khz
- 10 mhz
mA p-p % w mV pk s F
pOwer DissipatiOn shOrt CirCuit 50% - 100% - 50% transient reCOVery 4 nO eFFeCt On DC perFOrmanCe
-- -- -- --
Notes 1. guaranteed by design, not tested. 2. Load and line transition time > 10 s 3. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range.
4. Recovery time is measured from application of the transient to point the point at which Vout is within 1% of final value.
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MHP270 Rev G - 20100517
Page 6 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Electrical Characteristics: 25C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
parameter Output VOltage Output Current Output pOwer Output ripple line regulatiOn 2 lOaD regulatiOn input VOltage input Current
2
MHP27015S
MIN 14.85 0 0 -- -- -- 160 -- -- -- -- -- 80 TyP 15.00 -- -- -- -- -- 270 -- -- -- -- -- -- -- -- -- -- MAX 15.15 4.33 65 75 150 150 400 450 20 7 15 45 -- 45 700 300 500
MHP27028S
MIN 27.72 0 0 -- -- -- 160 -- -- -- -- -- 80 -- -- -- -- TyP 28.00 -- -- -- -- -- 270 -- -- -- -- -- -- -- -- -- -- MAX 28.28 2.32 65 280 280 280 400 450 20 10 15 70 -- 45 1800 1000 500
COnDitiOns Vin = 160 Vin = 160 10
tO tO
units VDC a w mV p-p mV mV VDC V mA
400 VDC 400 VDC
khz
- 2 mhz
Vin = 160 tO 400 VDC nO lOaD tO Full COntinuOus TRANSIENT 50 msec. 1, 3 nO lOaD inhibiteD-inh1 inhibiteD-inh2
input ripple Current eFFiCienCy lOaD Fault step lOaD respOnse CapaCitiVe lOaD
1
10
khz
- 10 mhz
mA p-p % w mV pk s F
pOwer DissipatiOn shOrt CirCuit 50% - 100% - 50% transient reCOVery 4 nO eFFeCt On DC perFOrmanCe
-- -- -- --
Notes 1. guaranteed by design, not tested. 2. Load and line transition time > 10 s 3. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range.
4. Recovery time is measured from application of the transient to point the point at which Vout is within 1% of final value.
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MHP270 Rev G - 20100517
Page 7 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
Electrical Characteristics: 25C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS 2
parameter Output VOltage Output Current 3 Vin = 160 Vin = 160
tO
MHP27005D
min 4.95 4.92 -- -- -- -- -- -- -- -- 160 0 -- -- -- -- 74 -- -- -- -- typ 5.00 5.00 5 -- -- -- 50 -- -- -- 270 -- -- -- -- -- -- -- -- -- -- maX 5.05 5.08 8.0 1 10 40 1 50 100 100 100 1000 400 450 20 10 15 60 -- 30 300 300 --
MHP27012D
min 11.88 11.82 -- -- -- -- -- -- -- -- 160 0 -- -- -- -- 81 -- -- -- -- typ 12.00 12.00 2.5 -- -- -- 50 -- -- -- 270 -- -- -- -- -- _ -- -- -- -- maX 12.12 12.18 4.0 1 5 48 1 60 125 120 120 800 400 450 20 10 15 60 -- 35 900 500 500
MHP28015D
min 14.85 14.77 -- -- -- -- -- -- -- -- 160 0 -- -- -- -- 82 -- -- -- -- typ 15.00 15.00 2.16 -- -- -- 50 -- -- -- 270 -- -- -- -- -- _ -- -- -- -- maX 15.15 15.23 3.46 1 4.33 52 1 65 125 150 150 750 400 450 20 8 15 60 -- 45 900 500 500
COnDitiOns +VOut -VOut eaCh Output tOtal eaCh Output tOtal 10
khz
units VDC a w mV p-p mV mV mV VDC V mA mA p-p % w mV pk s F
400 VDC 400 VDC
Output pOwer 3
tO
Output ripple VOut
- 2 mhz
lOaD regulatiOn 4, 5 VOut CrOss regulatiOn 6 input VOltage
line regulatiOn 4 VOut
Vin = 160 tO 400 VDC nO lOaD tO Full eFFeCt
On
-VOut
COntinuOus TRANSIENT 50 msec.1, 7 nO lOaD inhibiteD-inh1 inhibiteD-inh2
input Current input ripple Current eFFiCienCy lOaD Fault step lOaD respOnse VOut CapaCitiVe lOaD 1
10
khz
- 10 mhz
balanCeD lOaD pOwer DissipatiOn shOrt CirCuit 50% - 100% - 50% 8 transient reCOVery
9
nO eFFeCt On DC perFOrmanCe
Notes 1. guaranteed by design, not tested. 2. Share operation not characterized for dual outputs. 3. Up to 80% of the total output power is available from either output provided that the opposite output is simultaneously carrying 20% of the total output power. 4. Load and line transition time > 10 s 5. Assumes balanced loads on the outputs.
6. Effect on the negative output from 50%/50% loads to 70%/30% or 30%/70% loads. 7. Unit will shut down above approximately 425V but will be undamaged and will restart when voltage drops into normal range. 8. Second output at 50% 9. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value.
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MHP270 Rev G - 20100517
Page 8 of 10
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converter cases
270 Volt input - 65 Watt
TOP VIEW CASE U* Flanged case, short-leaded
*Does not require designator in Case Option position of model number.
Angled corner indicates pin one. 1.505 (38.23) max. 1.380 (35.05) 1.250 (31.75) 1.050 (26.67) 0.850 (21.59) 0.650 (16.51) 0.450 (11.43) 0.250 (6.35) 0.120 (3.05) 0.000 0.000 1 2 3 4 5 6 12 11 10 9 8 7
0.23 (5.8) Pin Length
0.128 dia (3.25). 0.040 dia (1.02)
Seam Seal
0.400 (10.16) max.
2.880 (73.15) 3.005 (76.33) max.
0.120 (3.05) 0.250 (6.35)
2.750 (69.85)
Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300C for 10 seconds per pin. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold, compression glass seal Seal Hole: 0.100 0.002 (2.54 0.05) Case U, Rev F, 20100503
Figure 4: Case u
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Page 9 of 10 MHP270 Rev G - 20100517
0.050 (1.27) 0.000
0.220 (5.59
Crane Aerospace & Electronics Power Solutions
MHp270 single and dual dc/dc converters
270 Volt input - 65 Watt
STANDARD AND /ES (NON-QML) PRODUCTS ENVIRONMENTAL SCREENING 1
test perFOrmed Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. B, -55C to +125C, ambient Constant Acceleration Method 2001, 500 g Burn-in Method 1015 3 96 hours Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 and 4: +25C case Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) Final visual inspection Method 2009
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. refers to products that do not offer QMl screening. 2. Standard and /ES, non-QML products, do not meet all of the requirements of MIL-PRF-38534. 3. Burn-in designed to bring the case temperature to the maximum case temperature of the product. Refer to the specific product information for the maximum case temperature.
standard nOn-Qml2
yes no no
/es nOn-Qml2
yes yes yes
no yes no no yes yes
yes yes yes yes no yes
sCreening table 1: enVirOnmental sCreening
MHP270 Single and Dual, MHP270 Rev G - 20100517. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. MHP270 Series is a trademark of Interpoint. Copyright (c) 1999 - 2010 Interpoint Corporation. All rights reserved. www.interpoint.com
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