DC/DC CONVERTERS VOLT INPUT SERIES WATT MODELS OUTPUT S
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-55° +125°C operation input Fully Isolated Magnetic feedback Fixed frequency, typical Topology Single Ended Forward transient protection Inhibit (input output side) Sync function out) Output trim single output models Indefinite short circuit protection Remote sense single output models efficiency W/in3 Parallelable watts
DC/DC CONVERTERS VOLT INPUT
SERIES WATT
MODELS
OUTPUT SINGLE DUAL
Size (max): 3.005 1.505 0.400 inches (76.33 38.23 10.16 Section case dimensions. Weight: grams maximum Screening: Standard, (Class H).See Section screening options, Section ordering information.
DESCRIPTION
Series28-volt DC/DC converters rated watts output power over -55°C +125°C temperature range with nominal input. rated output power drawn from either positive negative outputs. Current sharing allows units paralleled total power 148watts. welded, hermetically sealed package only 3.005 1.505 0.400 inches, giving series overall power density watts cubic inch.
INHIBIT
Series converters have compatible inhibit terminals (INH1 INH2) that used disable power conversion, resulting very quiescent input current generation switching noise. open collector compatible (<0.8 volts) required inhibit converter between INH1 (pin Input Common (pin open collector compatible (<0.5 volts) required inhibit converter between INH2 (pin Output Common (pin application intermediate voltages these pins (1.5 10.5 volts) should avoided.
DESIGN Series converters switching regulators that quasi-square wave, single ended forward converter design with constant switching frequency kHz. Isolation between input output circuits provided with transformer forward path wide bandwidth magnetic coupling feedback control loop. uses unique dual loop feedback technique that controls output current with inner feedback loop output voltage with cascaded voltage mode feedback loop. additional secondary current mode feedback loop improves transient response manner similar primary current mode control allows ease paralleling, without cost complexity. cascaded constant frequency, pulse-width modulated converters quasi-square wave single-ended forward design. Tight load regulation achieved through wide-bandwidth magnetic feedback circuit. output single models trimmed (see Figure voltage changes with different resistor values).
CURRENT PARALLEL OPERATION
Multiple converters used parallel drive common load (see Figure this mode operation load current shared three converters. current sharing mode, converter designated master. SLAVE (pin master left unconnected MSTR/INH2 (pin master connected SLAVE (pin slave units. units designated slaves have MSTR/INH2 (pin connected (pin Figure shows typical setup three units parallel. Note that synchronizing units together (though shown figure) required current sharing operation. second slave unit placed parallel with master slave; this requires (pin master unit connected (pin When paralleled, total combined power ratings converters available load. Overload short circuit performance adversely affected during parallel operation.
B2-25
SERIES WATT
ABSOLUTE MAXIMUM RATINGS
Input Voltage Power Dissipation (Pd) watts watts MFL2805S, MFL2805D) Output Power watts depending model Lead Soldering Temperature lead) 300°C Storage Temperature Range (Case) -65°C +150°C
DC/DC CONVERTERS
SYNC INHIBIT (INH1, INH2)
Sync (525 kHz) Duty cycle min, Logic Logic high min, Referenced input common used, connect input common Sync Referenced input common Inhibit (INH1, INH2) Open Collector Logic (output disabled) INH1 referenced input common Logic Inhibit current INH2 referenced output common Logic Inhibit current Logic high (output enabled) Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient ppm/°C typical Input Output Capacitance typical Isolation megohm minimum Audio Rejection typical Conversion Frequency Free mode typical kHz. min, External sync range Inhibit Voltage (unit enabled) INH1 to12 INH2
RECOMMENDED OPERATING CONDIInput Voltage Range TIONS continuous msec transient Case Operating Temperature (Tc) -55°C +125°C full power -55°C +135°C absolute Derate Output Power/Current Linearly from 100% 125°C 135°C
PINS USED
TR1, Master, Slave used, leave unconnected
Electrical Characteristics: -55°C +125° Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE LINE REGULATION LOAD REGULATION INPUT VOLTAGE LOAD FULL INPUT CURRENT CONDITION 25°C 25°C -55°C +125°C LOAD FULL CONTINUOUS TRANSIENT2 LOAD FULL LOAD INHIBITED INH1 INHIBITED INH2 INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT3 25°C POWER DISSIPATION SHORT CIRCUIT 25°C RECOVERY STEP LOAD RESP. 100% TRANSIENT RECOVERY4 TRANSIENT5 RECOVERY4 DELAY OVERSHOOT MFL2805S 4.95 5.00 5.05 MFL2812S 11.88 12.00 12.12 MFL2815S 14.85 15.00 15.15 4.33 MFL2828S1 MAX1 27.72 28.00 28.28 2.32 UNITS
12.5
1400
STEP LINE RESP.
START-UP
Notes MFL2828S specifiications 25°Tc, contact your Interpoint representative more information. Unit will shut down above approximately will undamaged will restart when voltage drops into normal range. Indefinite short circuit protection guaranteed above 125°C case.
Recovery time measured from application transient point which Vout within final value. Transition time
B2-26
DC/DC CONVERTERS
DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT1 OUTPUT POWER OUTPUT RIPPLE VOLTAGE VOUT LINE REGULATION LOAD REGULATION LOAD FULL CROSS REGULATION 25°C INPUT VOLTAGE LOAD FULL INPUT CURRENT 25°C +VOUT -VOUT +VOUT -VOUT NOTE NOTE CONTINUOUS TRANSIENT4 LOAD FULL LOAD INHIBITED INH1 INHIBITED INH2 BALANCED LOAD POWER DISSIPATION SHORT CIRCUIT RECOVERY %-100%- LOAD TRANSIENT RECOVERY6 TRANSIENT7 RECOVERY6 DELAY OVERSHOOT 12.5 2.80 3.00 CONDITIONS +VOUT 25°C -VOUT EACH OUTPUT TOTAL OUTPUT MFL2805D 4.95 5.00 5.05 4.92 5.00 5.08 MFL2812D 11.88 12.00 12.12 11.82 12.00 12.18 MFL2815D 14.85 15.00 15.15 14.77 15.00 15.23 3.03 4.34
SERIES WATT
UNITS
Electrical Characteristics: -55°C +125°C Vin, 100% load, free run, unless otherwise specified.
INPUT RIPPLE CURRENT EFFICIENCY 25°C LOAD FAULT5 25°C STEP LOAD RESPONSE VOUT STEP LINE RESPONSE VOUT START-UP
Notes total output power available from either output providing opposite output simultaneously carrying total power. Effect negative output under following conditions: +Pout 70%; -Pout Effect negative output under following conditions: +Pout 50%; -Pout
Unit will shut down above approximately will undamaged will restart when voltage drops into normal range. Indefinite short circuit protection guaranteed above 125°C case. Recovery time measured from application transient point which Vout within final value. Transition time
B2-27
SERIES WATT
DC/DC CONVERTERS
SINGLE OUTPUT MODELS CONNECTION DIAGRAMS SENSE PARALLEL
Inhibit Sync MSTR/INH2 Slave Pos. Sense Positive Input Input Common INH1 Sync Sync
Sense Return Output Common Positive Output
REMOTE SENSE CONNECTION Inhibit Sync MSTR/INH2 Slave Pos. Sense Sense Return Output Common Positive Output
Positive Input Input Common INH1 Sync Sync
OUTPUT VOLTAGE ADJUST CONNECTION VOUT INCREASE (VOLT) (OHMS) 12-V 15-V
FIGURE SENSE CONNECTIONS TRIM TABLE
Positive Input Input Common INH1 Sync Sync
MSTR/INH2 Slave Pos. Sense Sense Return
Inhibit Sync
MASTER
Output Common Positive Output
CONNECT ONLY WHEN SLAVES USED Positive Input Input Common INH1 Sync Sync MSTR/INH2 Slave Pos. Sense Sense Return Output Common Positive Output
SLAVE
Positive Input Input Common INH1 Sync Sync
MSTR/INH2 Slave Pos. Sense Sense Return Output Common Positive Output
SLAVE
FIGURE PARALLEL CONNECTIONS
B2-28
DC/DC CONVERTERS
Single Output Positive Input Input Common Triple (TRI) Inhibit (INH1) Sync Sync Positive Output Output Common Sense Return Positive Sense Slave Master/ Inhibit Dual Output Positive Input Input Common Triple (TRI) Inhibit (INH1) Sync Sync Positive Output Output Common Negative Output connection Slave Master Inhibit Angled corner indicates one.
SERIES WATT
VIEW (Pin side, marked side)
Section case dimensions. should connected input common external sync (Sync used. Sense pins must connected their respective outputs used.
FIGURE
NUMBERS MODEL NUMBERING
Base Model Input Voltage Output Voltage Number Outputs single, dual) Screening (Standard screening designator this position.)
STANDARD MICROCIRCUIT DRAWING (SMD) 5962-9316301HXC 5962-9316201HXC 5962-9316101HXC PROCESS 5962-9319101HXC 5962-9319201HXC 5962-9319301HXC
SERIES SIMILAR PART MFL2805S/883 MFL2812S/883 MFL2815S/883 MFL2828S/883 MFL2805D/883 MFL2812D/883 MFL2815D/883
exact specifications product, refer drawing. Section SMDs, more information.
Typical Performance Curves: 25°C Vin, 100% load, free run, unless otherwise specified.
Efficiency
Efficiency
Efficiency
Output (Watts)
Output Power (Watts)
Output Power (Watts)
MFL2805S MFL2805D Efficiency
MFL2812S MFL2812D Efficiency
MFL2815S MFL2815D Efficiency
FIGURE
FIGURE
FIGURE
B2-29
SERIES WATT
DC/DC CONVERTERS
Typical Performance Curves: 25°C Vin, 100% load, free run, unless otherwise specified.
Attenuation (dB)
Efficiency
100mV/div. 20V/div.
Vout
100.
Output Power (Watts)
Frequency (kHz)
MFL2828S Efficiency
Series Audio Rejection
µs/div
MFL2805S Step Line Response
FIGURE
FIGURE
FIGURE
100%
20V/div.
20V/div. 100mV/div.
1ms/div Load
+Vout
100mV/div.
1V/div.
100%
Vout
-Vout
1ms/div
MFL2805S Step Load Response
MFL2805S Turn Response
µs/div
MFL2815D Step Line Response
FIGURE
FIGURE
FIGURE
20V/div.
100%
-Pout 32.5W
-Vout Voltage Change
MFL2805D MFL2812D MFL2815D
+Vout
200mV/div.
100%
5V/div.
-Vout
1ms/div
MFL2815D Step Load Response
1ms/div Load
MFL2815D Turn Response
Output Load +Pout -Pout
Cross Regulation
FIGURE
MFL2815S
FIGURE
FIGURE
Input Voltage (Volts)
MFL2805S MFL2812S
Output Power (Watts)
Line Dropout
FIGURE
20022-001-DTS 1004 technical information believed accurate, responsibility assumed errors omissions. Interpoint reserves right make changes products specifications without notice. Series trademark Interpoint. Copyright 1994 1999 Interpoint. rights reserved.
B2-30
CASE
CASES
Angled corner indicates
1.505 (38.23)
CASE VIEW (PIN SIDE) Figures dimensions
3.005 (76.33) max. Note: Pins shown Case
Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins alloy/Gold compression glass seal Case dimensions inches (mm) Tolerance ±0.005 (0.13) three decimal places ±0.01 (0.2) decimal places unless otherwise specified CAUTION Heat from reflow wave soldering damage device. Solder pins individually with heat application exceeding 300°C seconds pin.
FIGURE CASE MAXIMUM DIMENSIONS
B8-36
CASES
VIEW CASE Series Series: Screening Standard, MFLHP Series, FMD270 Filter, FMD28-461SL Filters: Screening Standard SMFL, SMFLHP, SMHP, Series; SFCS, SFME Filters: Screening Standard, Class HUM70 Module Module: Screening Standard
Angled corner indicates 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
0.400 (10.16) max.
CASE
Seam Seal
0.23 (5.8) Lead Length 0.128 (3.25). 0.040 (1.02)
0.120 (3.05) 0.250 (6.35)
2.750 (69.85)
2.880 (73.15) 3.005 (76.33) max.
0.220 (5.59
FIGURE CASE
0.050 (1.27) 0.000
0.000
B8-37
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
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