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| FEATURES * * * * * * * * * * * * * * -55 to +100C operation 19 to 40 VDC input Fully Isolated Magnetic feedback Fixed frequency, 600 kHz typical Topology - Single Ended Forward 80 V for up to 50 ms transient protection Inhibit function - input and output Sync function - input and output Output trim on single output models Indefinite short circuit protection Remote sense on single output models Up to 87% efficiency Parallelable up to 228 watts DC/DC CONVERTERS 28 VOLT INPUT MFLHP SERIES 100 WATT MODELS VDC OUTPUT SINGLE 5 12 15 DUAL 5 12 15 Size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) See Section B8, case U1, for dimensions. Weight: 100 grams maximum Screening: Standard or ES. See Section C2 for screening options, see Section A5 for ordering information. DESCRIPTION The MFLHP SeriesTM 28 volt DC/DC converters are rated up to 100 watts output power over a -55 to +100C temperature range with a 28 Vdc nominal input. On dual output models, up to 70% of the rated output power can be drawn from either the positive or negative outputs. Current sharing allows the units to be paralleled for total power of up to 270 watts. The welded, hermetically sealed package is only 3.005 x 1.505 x 0.400 inches, giving the series an overall power density of up to 67 watts per cubic inch. INHIBIT The MFLHP Series converters have two TTL compatible inhibit terminals (INH1 and INH2) that can be used to disable power conversion, resulting in a very low quiescent input current. An open collector TTL compatible low (<0.8 volts) is required between INH1 (pin 4) and Input Common (pin 2) to inhibit the converter. An open collector TTL compatible low (<0.5 volts) is required between INH2 (pin 12) and Output Common (pin 8) to inhibit the converter. The application of intermediate voltages to these pins (1.5 to 10.5 volts) should be avoided. DESIGN FEATURES The MFLHP Series converters are switching regulators that use a quasi-square wave, single ended forward converter design with a constant switching frequency of 600 kHz. Isolation between input and output circuits is provided with a transformer in the forward path and wide bandwidth magnetic coupling in the feedback control loop. The MFLHP Series uses a unique dual loop feedback technique that controls output current with an inner feedback loop and output voltage with a cascaded voltage mode feedback loop. The additional secondary current mode feedback loop improves transient response in a manner similar to primary current mode control and allows for ease of paralleling. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. The output voltage on single MFLHP models can be easily trimmed by adding an external resistor. (See Figure 1 for voltage changes with different resistor values.) CURRENT SHARING AND PARALLEL OPERATION Multiple MFLHP converters may be used in parallel to drive a common load (see Figure 2). In this mode of operation the load current is shared by two or three MFLHP converters. In current sharing mode, one MFLHP converter is designated as a master. The SLAVE pin (pin 11) of the master is left unconnected and the MSTR/INH2 pin (pin 12) of the master is connected to the SLAVE pin (pin 11) of the slave units. The units designated as slaves have the MSTR/INH2 pin (pin 12) connected to the SNS RTN pin (pin 9). Figure 2 shows the typical setup for two or three units in parallel. Note that synchronizing the units together (though shown in the figure) is not required for current sharing operation. A second slave unit may be placed in parallel with a master and slave; this requires the TRI pin (pin 3) of the master unit to be connected to the SNS RTN pin (pin 9). When paralleled, 76% of the total combined power ratings of the MFLHP converters are available at the load. Overload and short circuit performance are not adversely affected during parallel operation. B2-19 MFLHP SERIES 100 WATT ABSOLUTE MAXIMUM RATINGS Input Voltage * 19 to 40 VDC Power Dissipation (Pd) * 20 watts Output Power * 80 to 100 watts depending on model Lead Soldering Temperature (10 sec per lead) * 300C Storage Temperature Range (Case) * -65C to +150C DC/DC CONVERTERS SYNC IN AND INHIBIT (INH1, INH2) Sync In (525 to 675 kHz) * Duty cycle 40% min, 60% max * Logic low 0.8 V max * Logic high 4.5 V min * Referenced to input common * If not used, connect to input common Sync Out - Referenced to input common Inhibit (INH1, INH2) TTL Open Collector * Logic low (output disabled) Current -10 to -5 mA INH1 referenced to input common Logic low 0.8 V max INH2 referenced to output common Logic low 0.5 V max * Logic high (output enabled) Open collector TYPICAL CHARACTERISTICS Output Voltage Temperature Coefficient * 100 ppm/C typical Input to Output Capacitance * 150 pF typical Isolation * 100 megohm minimum at 500 V Audio Rejection * 50 dB typical Conversion Frequency * Free run mode 600 kHz typical 550 kHz min, 650 kHz. max * External sync range 525 to 675 kHz Inhibit Pin Voltage (unit enabled) * INH1 = 9 to12 V, INH2 = 6 to 9 V RECOMMENDED OPERATING CONDITIONS Input Voltage Range * 19 to 40 VDC continuous * 80 V for 50 msec transient Case Operating Temperature (Tc) * -55 to +100C full power * -55 to +135C absolute Derating Output Power/Current * Linearly from 100% at 100C to 0% at 135C PINS NOT USED TR1, Master, and Slave If not used, leave unconnected Electrical Characteristics: -50C to +100C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT POWER OUTPUT RIPPLE VOLTAGE 10 k - 2 MHz LINE REGULATION LOAD REGULATION INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT CONDITION 25C VIN = 19 to 40 VDC VIN = 19 to 40 VDC Tc = 25C Tc = -55C to +100C VIN = 19 to 40 VDC NO LOAD TO FULL CONTINUOUS TRANSIENT1 50 ms NO LOAD FULL LOAD INHIBITED - INH1 INHIBITED - INH2 10 kHz - 10 MHz Tc = 25C POWER DISSIPATION SHORT CIRCUIT RECOVERY 50% - 100% - 50% TRANSIENT RECOVERY3 19 - 40 - 19 VDC TRANSIENT4 RECOVERY3 DELAY OVERSHOOT MFLHP2805S MIN 4.95 0 0 -- -- -- -- 19 -- -- -- -- -- -- 77 -- -- -- -- -- -- -- -- TYP MAX 5.00 5.05 -- 16 -- 15 30 0 0 28 -- 70 3.6 9 35 15 80 15 1.5 350 1.5 250 200 3.5 0 80 35 75 20 20 40 80 120 3.73 14 70 50 -- 20 4 450 3.0 400 300 6 25 MFLHP2812S MIN TYP MAX 11.88 12.00 12.12 0 -- 7.5 0 -- -- -- -- 19 -- -- -- -- -- -- 83 -- -- -- -- -- -- -- -- -- 30 45 0 0 28 -- 50 3.8 9 35 15 86 15 1.5 450 1.5 250 200 3.5 0 90 75 125 20 20 40 80 80 3.95 14 70 50 -- 20 4 700 3.0 400 300 6 50 MFLHP2815S MIN TYP MAX 14.85 15.00 15.15 0 -- 6.67 0 -- -- -- -- 19 -- -- -- -- -- -- 84 -- -- -- -- -- -- -- -- -- 30 45 0 0 28 -- 50 4.2 9 35 15 87 15 1.5 450 1.5 250 200 3.5 0 100 85 150 20 20 40 80 80 4.40 14 70 50 -- 20 4 700 3.0 400 300 6 50 UNITS VDC A W mV p-p mV mV VDC V mA A mA INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT2 Tc = 25C STEP LOAD RESP. mA pp % W ms mV pk ms mV pk s ms mV pk STEP LINE RESP. START-UP Notes 1. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 2. Indefinite short circuit protection not guaranteed above 100C case. 3. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 4. Transition time 10 s. B2-20 DC/DC CONVERTERS DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE Tc = 25C OUTPUT CURRENT1 VIN = 19 TO 40 VDC OUTPUT POWER VIN = 19 TO 40 VDC OUTPUT RIPPLE VOLTAGE LINE REGULATION VIN = 19 TO 40 VDC LOAD REGULATION NO LOAD TO FULL CROSS REGULATION Tc = 25C INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT Tc = 25C CONDITIONS +VOUT -VOUT EACH OUTPUT TOTAL EACH OUTPUT TOTAL 10 kHz - 2 MHz +VOUT -VOUT +VOUT -VOUT +VOUT -VOUT SEE NOTE 2 SEE NOTE 3 CONTINUOUS TRANSIENT4 50 ms NO LOAD FULL LOAD INHIBITED - INH1 INHIBITED - INH2 10 kHz - 10 MHz BALANCED LOAD POWER DISSIPATION SHORT CIRCUIT RECOVERY 50 %-100%- 50% LOAD TRANSIENT RECOVERY6 19 - 40 - 16 VIN TRANSIENT7 RECOVERY6 DELAY OVERSHOOT -- -- -- -- -- -- -- -- 19 0 -- -- -- -- -- 77 -- -- -- -- -- -- -- -- 25 25 0 25 0 25 6 3 28 -- 50 3.6 9 35 15 80 15 1.5 350 1.5 250 200 3.5 0 125 125 50 100 50 100 8 6 40 80 120 14 70 50 -- 20 4.0 450 3.0 400 300 6 25 -- -- -- -- -- -- -- -- 19 0 -- -- -- -- -- 83 -- -- -- -- -- -- -- -- 50 50 0 25 10 50 2 2 28 -- 50 3.8 9 35 15 86 15 1.5 450 1.5 250 200 3.5 0 150 150 50 100 100 200 4 4 40 80 100 14 70 50 -- 20 4.0 700 3.0 400 300 6 50 -- -- -- -- -- -- -- -- 19 0 -- -- -- -- -- 84 -- -- -- -- -- -- -- -- 50 50 0 25 10 50 2 2 28 -- 550 4.2 9 35 15 87 15 1.5 450 1.5 250 200 3.5 0 MFLHP2805D MIN TYP MAX 4.95 5.00 5.05 4.92 5.00 5.08 0 0 0 0 -- -- -- -- 11.2 16.0 56 80 MFLHP2812D MIN TYP MAX 11.88 12.00 12.12 11.82 12.00 12.18 0 0 0 0 -- -- -- -- 5.3 7.5 63 90 MFLHP SERIES 100 WATT MFLHP2815D MIN TYP MAX 14.85 15.00 15.15 14.77 15.00 15.23 0 0 0 0 -- -- -- -- 4.67 6.67 70 100 200 200 50 100 100 200 4 4 40 80 100 14 70 50 -- 20 4.0 700 3.0 400 300 6 50 mV % VDC V mA A mA mA p-p % W ms mV pk ms mV pk s ms mV p UNITS VDC A W Electrical Characteristics: -55C to +100C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. mV p-p mV INPUT RIPPLE CURRENT EFFICIENCY 25C Tc LOAD FAULT5 Tc = 25C STEP LOAD RESPONSE VOUT STEP LINE RESPONSE VOUT START-UP Notes 1. Up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total power. 2. Effect on the negative output under the following conditions: +Pout 30% to 70%; -Pout 70% to 30% 3. Effect on the negative output under the following conditions: +Pout 50%; -Pout 10% to 50% 4. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 5. Indefinite short circuit protection not guaranteed above 100C case. 6. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 7. Transition time 10 s. B2-21 MFLHP SERIES 100 WATT 28V + - DC/DC CONVERTERS 1 2 3 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 9 8 7 + RL SINGLE OUTPUT MODELS CONNECTION DIAGRAMS - SENSE AND PARALLEL Inhibit Sync In Sense Return Output Common Positive Output - REMOTE SENSE CONNECTION 1 2 3 Inhibit Sync In 4 5 6 MSTR/INH2 12 11 Slave 10 Pos. Sense 9 Sense Return 8 Output Common 7 Positive Output 28V + - Positive Input Input Common TR1 INH1 Sync Out Sync In RA - + RL OUTPUT VOLTAGE ADJUST CONNECTION FIGURE 1: SENSE CONNECTIONS AND TRIM TABLE 28V + - 1 2 3 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense Sense Return 10 9 8 7 + RL - Inhibit Sync In MASTER Output Common Positive Output CONNECT ONLY WHEN 2 SLAVES ARE USED 1 2 3 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 Positive Output 7 SLAVE 1 1 2 3 4 5 6 Positive Input Input Common TR1 INH1 Sync Out Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 Positive Output 7 SLAVE 2 FIGURE 2: PARALLEL CONNECTIONS B2-22 DC/DC CONVERTERS PIN OUT Pin 1 2 3 4 5 6 7 8 9 10 11 12 Single Output Positive Input Input Common Triple (TRI) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Sense Return Positive Sense Slave Master / Inhibit 2 (MSTR/INH2) Dual Output Positive Input Input Common Triple (TRI) Inhibit 1 (INH1) Sync Out Sync In Positive Output Output Common Negative Output No connection Slave Master / Inhibit 2 (MSTR/INH2) Angled corner indicates pin one. MFLHP SERIES 100 WATT 1 2 3 4 5 6 12 11 TOP VIEW MFLHP (Pin side, marked side) 10 9 8 7 See Section B8, case U1 for dimensions. Pin 6 should be connected to input common if external sync (Sync In) is not used. Sense pins must be connected to their respective outputs if not used. FIGURE 3: PIN OUT MODEL NUMBERING KEY MFLHP 28 05 S / ES Base Model Input Voltage Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) Typical Performance Curves: 25C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified. 90 85 19V 90 85 19V 90 85 19V Efficiency (%) Efficiency (%) Efficiency (%) 80 75 70 65 60 10 30 28V 40V 80 75 70 65 28V 80 75 70 65 40V 28V 40V Output (Watts) 50 70 90 60 10 30 50 70 90 60 10 30 50 70 90 100 Output Power (Watts) Output Power (Watts) MFLHP2805S & MFLHP2805D Efficiency MFLHP2812S & MFLHP2812D Efficiency MFLHP2815S & MFLHP2815D Efficiency FIGURE 4 FIGURE 5 FIGURE 6 B2-23 MFLHP SERIES 100 WATT 0. 20. DC/DC CONVERTERS 100mV/div. 100% to 50% Typical Performance Curves: 25C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified. Attenuation (dB) 40. 60. 80. 20V/div. 100mV/div. Vout Vin 50% to 100% 100. 0.1 1 10 100 Frequency (kHz) MFLHP Series Audio Rejection 50 s/div 19 to 40 V 1ms/div MFLHP2805S Step Load Response MFLHP2805S Step Line Response FIGURE 7 FIGURE 8 FIGURE 9 20V/div. 20V/div. 50% to 100% Vin +Vout Vin 1V/div. Vout 100mV/div. 200mV/div. 100% to 50% -Vout 1ms/div No Load 50 s/div 19 to 40 V 1ms/div MFLHP2815D Step Load Response MFLHP2805S Turn On Response MFLHP2815D Step Line Response FIGURE 10 8 FIGURE 11 FIGURE 12 19 -Vout Voltage Change (%) 20V/div. 6 4 2 0 -2 -4 -6 -8 30 40 Input Voltage (Volts) VIN +Vout MFLHP2805D MFLHP2805S & 5D 18 MFLHP2815S & 15D 17 MFLHP2812D MFLHP2815D 5V/div. -Vout MFLHP2812S & 12D 50 60 70 16 30 40 50 60 70 80 90 100 1ms/div No Load MFLHP2815D Turn On Response Output Load (%) +Pout 70 to 30 %, -Pout 30 to 70% Output Power (Watts) Cross Regulation Low Line Dropout FIGURE 13 FIGURE 14 FIGURE 15 B2-24 20222-001-DTS Rev A DQ# 1002 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. MFLHP Series is a trademark of Interpoint. Copyright (c) 1995-1999 Interpoint. All rights reserved. CASE U CASES Angled corner indicates pin one 1.505 max (38.23) CASE U TOP VIEW (PIN SIDE) See Figures 55 and 56 for dimensions 3.005 (76.33) max. Note: Pins are shown for Case U1. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal Case dimensions in inches (mm) Tolerance 0.005 (0.13) for three decimal places 0.01 (0.2) 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. FIGURE 54: CASE U MAXIMUM DIMENSIONS B8-36 CASES TOP VIEW CASE U1 MFL Series and MHP Series: Screening - Standard, ES or 883 MFLHP Series, FMD270 EMI Filter, and FMD28-461SL EMI Filters: Screening - Standard or ES SMFL, SMFLHP, SMHP, and SSP Series; SFCS, and SFME EMI Filters: Screening - Standard, Class H or K HUM70 Module and LCM Module: Screening - Standard or ES 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 0.400 (10.16) max. CASE U Seam Seal 0.23 (5.8) Lead Length 0.128 dia (3.25). 0.040 dia (1.02) 1 2 3 4 5 6 12 11 10 9 8 7 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 55: CASE U1 0.050 (1.27) 0.000 0.000 B8-37 QA SCREENING 125C PRODUCTS 125C PRODUCTS TEST (125C Products) PRE-CAP INSPECTION Method 2017, 2032 TEMPERATURE CYCLE (10 times) Method 1010, Cond. C, -65C to 150C Method 1010, Cond. B, -55C to 125C CONSTANT ACCELERATION Method 2001, 3000 g Method 2001, 500 g BURN-IN Method 1015, 160 hours at 125C 96 hours at 125C case (typical) FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 through 6: -55C, +25C, +125C Subgroups 1 and 4: +25C case HERMETICITY TESTING Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) FINAL VISUAL INSPECTION Method 2009 STANDARD /ES /883 (Class H)* yes yes yes no no no yes yes no no no no yes yes no no no no yes yes no no yes no yes yes no no no yes yes yes no yes yes no yes yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. *883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of -55C to +125C. Applies to the following products MOR Series MHD Series MFLHP Series MHV Series MFL Series MHF+ Series MHP Series MHF Series** MTR Series MGA Series MQO Series** MSA Series MGH Series MCH Series FM-704A EMI Filter FMD**/FME EMI Filter FMC EMI Filter FMH EMI Filter FMGA EMI Filter FMSA EMI Filter HUM Modules** LCM Modules** LIM Modules **MFLHP Series, MQO Series, MHF Series, FMD EMI Filters, Hum Modules, and LCM Modules do not offer `883" screening. C2-10 |
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