DC/DC CONVERTERS VOLT INPUT SERIES WATT MODELS OUTPUT S

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DC/DC CONVERTERS VOLT INPUT SERIES WATT MODELS OUTPUT S

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-55° +125°C operation input volt outputs) Fully Isolated Optocoupler feedback Fixed frequency typical Forward converter topology transient protection Inhibit function Indefinite short circuit protection efficiency, W/in3
DC/DC CONVERTERS VOLT INPUT
SERIES WATT
MODELS
OUTPUT SINGLE DUAL
Size (max.): 1.460 1.130 0.330 inches (37.08 28.70 8.38 Section case dimensions. Weight: grams typical. Screening: Standard section screening options.
DESCRIPTION
Seriesof DC/DC converters offer watts power from single dual outputs single package over full military temperature range. Thick film hybrid manufacturing technology produces high levels miniaturization, giving Series converters profile (0.330 inch), small board area (1.65 square inches), high power density watt/in3). parts packaged hermetically sealed steel enclosures, making them ideal military, aerospace, high reliability industrial applications. elements both input output help reduce need external components. information about filtering meet MILSTD-461's CE03 test, contact your Interpoint representative.
WIDE VOLTAGE RANGE
Series designed provide full power operation over input voltage range volts. volt models provide volt range. Operation below volts volts volt models), including operation MIL-STD-704E emergency power conditions, possible with derated output power. Please refer line drop-out graphs, Figures
DESIGN METHODOLOGY
converters switching regulators which quasisquare wave, single ended forward converter design with nominal switching frequency kHz. Isolation between input output circuits provided with transformer forward power loop temperature insensitive optical link feedback control loop. Output regulation accomplished with constant frequency pulse width modulation. Both line load regulation typically within dual output models, positive output independently regulated negative output cross-regulated. Figures illustrate what effects load changes have negative output. Indefinite short circuit protection overload protection provided sensing output load current restricting output current approximately 125% full load output current. Since output current sensed secondary stage, result predictable, constant output current control with foldback characteristics. converters provided with internal filtering
MILITARY TEMPERATURE RANGE
Series provides full power operation case temperatures from -55°C +125°C. volt models both single dual output configurations provide full power operation +125°C with derated power 135°C. volt model provides full power 110°C derated 130°C. Depending operating levels, flow, ambient temperature; heat sinking required.
INHIBIT FEATURE
inhibit terminal provided that used disable internal switching, resulting very quiescent input current. open collector compatible (0.8V) required control inhibit function. This level supplied open collector gate since inhibit provided with internal pull-up resistor.
B2-77
SERIES WATT
ABSOLUTE MAXIMUM RATINGS
Input Voltage volt output) Output Power watts watts MHF2805S) Lead Soldering Temperature lead) 300°C Storage Temperature Range (Case) -55°C +135°C
DC/DC CONVERTERS
INHIBIT
Inhibit Open Collector Logic (output disabled) Logic Inhibit current Referenced input common Logic high (output enabled) Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient ppm/°C, typical Input Output Capacitance typical Current Limit 125% full load, typical Isolation megohm minimum Conversion Frequency typical Inhibit Voltage (unit enabled)
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range continuous volt outputs continuous msec transient Case Operating Temperature (Tc) -55°C +125°C full power -55°C +110°C full power MHF2805S -55°C +135°C absolute -55°C +130°C absolute MHF2805S Derating Output Power/Current Linearly from 100% 125°C 135°C Linearly from 100% 110°C 130°C MHF2805S
Electrical Characteristics: 25°C Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE LINE REGULATION LOAD REGULATION INPUT VOLTAGE MIN. MAX. MIN. MAX. LOAD FULL CONTINUOUS TRANSIENT INPUT CURRENT LOAD FULL LOAD INHIBITED INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT1 POWER DISSIPATION OVERLOAD SHORT CIRCUIT START-UP DELAY CONDITIONS 4.95 MHF2805S 5.05 11.88 MHF2812S 12.12 MHF2815S 14.85 15.15 UNITS
Notes Indefinite short circuit protection guaranteed above 125°C case temperature (110°C case MHF2805S).
B2-78
DC/DC CONVERTERS
DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE CONDITION +VOUT VOUT OUTPUT CURRENT1, OUTPUT POWER2 +VOUT VOUT TOTAL OUTPUT RIPPLE VOLTAGE LINE REGULATION MIN. MAX. LOAD REGULATION LOAD FULL CROSS REGULATION +VOUT LOAD3 LOAD4 INPUT VOLTAGE LOAD FULL INPUT CURRENT CONTINUOUS TRANSIENT LOAD FULL LOAD INHIBITED POWER DISSIPATION SHORT CIRCUIT OVERLOAD START-UP DELAY +VOUT 11.88 11.82 MHF2812D 12.0 12.0 12.12 12.18 10.8 10.8 MHF2815D 15.0 15.0 15.15 15.23 10.8 10.8 UNITS 14.85 14.77
SERIES WATT
Electrical Characteristics: 25°C Vin, 100% load, unless otherwise specified.
INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT5
Notes Applies both outputs. Maximum combined output power watts. maximum available from either output. load positive output negative output. Figure
load positive output load negative output. load negative output load positive output. Figure Indefinite short circuit protection guaranteed above 125°C case temperature.
Single Output Inhibit connection Output Common Positive Output connection Case Ground Input Common Positive Input Dual Output Inhibit Positive Output Output Common Negative Output connection Case Ground Input Common Positive Input Squared corner cover indicate one. MODEL NUMBER
Base Model Input Voltage Output Voltage Number Outputs single, dual) Screening (Standard screening designator this position.)
BOTTOM VIEW
Section case dimensions.
FIGURE
B2-79
SERIES WATT
DC/DC CONVERTERS
Typical Performance Curves: 25°C Vin, 100% load, unless otherwise specified.
Efficiency
Efficiency
Efficiency
Output Power (Watts)
Output Power (Watts)
Output Power (Watts)
MHF2805S Efficiency
MHF2812S Efficiency
MHF2815S Efficiency
FIGURE
FIGURE
FIGURE
Negative Output Voltage Change
2812D 2815D 2812D
Cond.
Efficiency
Efficiency
Cond.
Output Power (Watts)
Output Power (Watts)
MHF2812D Efficiency
MHF2815D Efficiency
Output Load Condition Load Pos. Vout, Neg. Vout Condition Load Neg. Vout, Pos. Vout
Negative Output Voltage Cross Regulation
FIGURE
FIGURE
2815S
FIGURE
Negative Output Voltage Change
Input Voltage (Volts)
Input Voltage (Volts)
2812D 2815D
2815D 2812D
2812S
2805S
Output Load Positive Output Load Negative Output Load
Output Power (Watts) Drop
Output Power (Watts) Drop
Dual Negative Output Voltage Cross Regulation
Single Line Dropout
Dual Line Dropout
FIGURE
FIGURE
FIGURE
B2-80
218211-001-DTS 1011 technical information believed accurate, responsibility assumed errors omissions. Interpoint reserves right make changes products specifications without notice. Series trademark Interpoint. Copyright 1992 1999 Interpoint. rights reserved.
CASE
CASES
Squared corner case indicate one. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel (SMHF Series Cold Rolled Steel/Nickel/Gold) Pins alloy/Gold compression glass seal Case dimensions inches (mm) Tolerance ±0.005 (0.13) three decimal places ±0.01 (0.3) decimal places unless otherwise specified CAUTION Heat from reflow wave soldering damage device. Solder pins individually with heat application exceeding 300°C seconds pin.
CASE BOTTOM VIEW Figures configurations.
1.130 (28.70)
1.460 (37.08)
FIGURE CASE MAXIMUM DIMENSIONS
BOTTOM VIEW CASE MHF+ Series Single Dual: Screening Standard, Series LIM5050 Module: Screening Standard SMHF Series Single Dual SLIM5050 Module: Screening Space Standard, HR120 Series: screening options
Seam Seal Projection Weld Squared corner case indicate one.
0.960 (24.38) 0.030 dia. (0.76)
0.160 (4.06) 0.000 0.330 (8.38) 0.000 0.25 (6.35) 0.25 (6.35) 0.330 (8.38) 0.000 0.000
0.205 (5.21)
FIGURE CASE
Note: Although every effort been made render case drawings actual size, variations printing process cause some distortion. Please refer numerical dimensions accuracy.
B8-10
0.505 (12.83) 0.705 (17.91) 0.905 (22.99) 1.105 (28.07)
SCREENING 125°C PRODUCTS
125°C PRODUCTS
TEST (125°C Products) PRE-CAP INSPECTION Method 2017, 2032 TEMPERATURE CYCLE times) Method 1010, Cond. -65°C 150°C Method 1010, Cond. -55°C 125°C CONSTANT ACCELERATION Method 2001, 3000 Method 2001, BURN-IN Method 1015, hours 125°C hours 125°C case (typical) FINAL ELECTRICAL TEST MIL-PRF-38534, Group Subgroups through -55°C, +25°C, +125°C Subgroups +25°C case HERMETICITY TESTING Fine Leak, Method 1014, Cond. Gross Leak, Method 1014, Cond. Gross Leak, 10-3) FINAL VISUAL INSPECTION Method 2009 STANDARD /883 (Class
Test methods referenced MIL-STD-883 determined MIL-PRF-38534. *883 products built with element evaluated components 100% tested guaranteed over full military temperature range -55°C +125°C. Applies following products Series Series MFLHP Series Series Series MHF+ Series Series Series** Series Series Series** Series Series Series FM-704A Filter FMD**/FME Filter Filter Filter FMGA Filter FMSA Filter Modules** Modules** Modules
**MFLHP Series, Series, Series, Filters, Modules, Modules offer `883" screening.
C2-10

DC/DC CONVERTERS VOLT INPUT SERIES WATT MODELS OUTPUT S

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