Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT FEATURES • -55° to +100°C 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 MODELS VDC OUTPUT • 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 SINGLE DUAL 5 12 15 ±5 ±12 ±15 • Up to 87% efficiency • Parallelable up to 228 watts DESCRIPTION The MFLHP Series™ 28 volt DC/DC converters are rated up to 100 watts output power over a -55° to +100°C 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 228 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. 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.) INHIBIT The MFLHP Series converters have two inhibit terminals (INH1 and INH2) that can be used to disable power conversion, Crane Aerospace & Electronics Electronics Group (Interpoint Brand) PO Box 97005 • Redmond WA 98073-9705 425.882.3100 • [email protected] www.craneae.com resulting in a very low quiescent input current. A logic low (<0.8 volts) is required between INH1 (pin 4) and Input Common (pin 2) to inhibit the converter. A logic 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. SYNC Converters may be synced to an external clock (525 to 675 kHz) or to one another by using the sync in or out pins. The nominal free-run switching frequency is 600 kHz. CURRENT SHARING AND PARALLEL OPERATION Multiple MFLHP converters may be used in parallel to drive a common load (see Figure 3). 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 3 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. Page 1 of 11 Rev D - 20070703 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT OPERATING CONDITIONS AND CHARACTERISTICS SYNC IN AND INHIBIT (INH1, INH2) Input Voltage Range • 19 to 40 VDC continuous • 80 V for 50 msec transient Output Power • 80 to 100 watts depending on model Lead Soldering Temperature (10 sec per pin) • 300°C Storage Temperature Range (Case) • -65°C to +150°C Power Dissipation (Pd) Max • 20 watts Case Operating Temperature (Tc) • -55 to +100°C full power • -55 to +135°C absolute Derating Output Power/Current • Linearly from 100% at 100°C to 0% at 135°C Output Voltage Temperature Coefficient • 100 ppm/°C typical Input to Output Capacitance • 150 pF typical Current Limit • 115% of full load typical Isolation • 100 megohm minimum at 500 VDC 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 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 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 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) 100 grams Screening Standard or ES. See “100°C Non-QML Products—MIL-PRF-38534 Environmental Screening” for more information. www.craneae.com Page 2 of 11 Rev D - 20070703 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT PINS NOT IN USE 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) TR1 Master Slave Sync in Inhibit (INH1) Inhibit (INH2) Sync Out Sense Lines Angled corner indicates pin one. 12 1 11 2 3 4 TOP VIEW MFLHP (Pin side, marked side) See case U for dimensions. FIGURE 1: PIN OUT www.craneae.com 9 8 5 6 10 Page 3 of 11 Rev D - 20070703 7 Leave unconnected Leave unconnected Leave unconnected Connect to input common Leave unconnected Leave unconnected Leave unconnected Must be connected to appropriate outputs Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT SINGLE OUTPUT MODELS CONNECTION DIAGRAMS - SENSE AND PARALLEL 28V + – Inhibit 1 Positive Input 2 Input Common 3 TR1 4 INH1 5 6 Sync In MSTR/INH2 12 Slave 11 Pos. Sense 10 9 Sense Return Sync Out Output Common Sync In Positive Output – 8 7 + RL REMOTE SENSE CONNECTION 28V + – 1 Positive Input 2 Input Common 3 4 Inhibit 5 6 Sync In MSTR/INH2 12 11 Slave 10 Pos. Sense 9 Sense Return 8 Output Common 7 Positive Output TR1 INH1 Sync Out Sync In RA – + RL OUTPUT VOLTAGE ADJUST CONNECTION RA (OHMS) 12–V 15–V 25 20 VOUT INCREASE (VOLT) 0.1 5–V 70 0.2 140 50 40 0.3 210 75 60 0.4 280 100 80 0.5 350 125 100 FIGURE 2: SENSE CONNECTIONS AND TRIM TABLE – SINGLE OUTPUT MODELS 28V Inhibit + – 1 Positive Input 2 Input Common 3 TR1 4 5 Sync In 6 MSTR/INH2 12 Slave 11 Pos. Sense MASTER INH1 Sync Out Sense Return Output Common Sync In Positive Output 10 9 – 8 7 + RL CONNECT ONLY WHEN 2 SLAVES ARE USED 1 Positive Input 2 Input Common 3 TR1 4 INH1 5 Sync Out 6 Sync In 1 Positive Input 2 Input Common 3 TR1 4 INH1 5 Sync Out 6 SLAVE 1 MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 Positive Output 7 MSTR/INH2 12 Slave 11 Pos. Sense 10 Sense Return 9 Output Common 8 SLAVE 2 Sync In Positive Output 7 FIGURE 3: PARALLEL CONNECTIONS – SINGLE OUTPUT MODELS www.craneae.com Page 4 of 11 Rev D - 20070703 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT 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.) MODEL SELECTION MFLHP28 Base model / Vout value number of outputs screening Choose one from each of the following rows: Vout value Number of outputs Screening www.craneae.com for singles and duals: 5, 12, 15 S (single) or D (dual) standard screening, leave blank Page 5 of 11 Rev D - 20070703 /ES (ES screening) Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT Electrical Characteristics: –55°C to +100°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS MFLHP2805S MFLHP2812S MAX MIN CONDITIONS MIN TYP MAX MIN OUTPUT VOLTAGE TC = 25°C 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 OUTPUT CURRENT VIN = 19 TO 40 VDC 0 — 16 0 — 7.5 0 — 6.67 A OUTPUT POWER VIN = 19 TO 40 VDC 0 — 80 0 — 90 0 — 100 W OUTPUT RIPPLE 10 KHZ - 2 MHZ TC = 25°C TC = -55°C TO +100°C — — 15 30 35 75 — — 30 45 30 45 85 150 mV p-p LINE REGULATION VIN = 19 TO 40 VDC — 0 20 — 0 20 — 0 20 mV LOAD REGULATION NO LOAD TO FULL — 0 20 — 0 20 — 0 20 mV INPUT VOLTAGE NO LOAD TO FULL CONTINUOUS 19 28 40 19 28 40 19 28 40 VDC TRANSIENT2 50 msec.1 — — 80 — — 80 — — 80 V NO LOAD — 70 120 — 50 120 — 50 120 INHIBITED–INH1 — 9 14 — 9 14 — 9 14 75 125 — — TYP MAX UNITS PARAMETER INPUT CURRENT TYP MFLHP2815S VDC mA INHIBITED–INH2 — 35 70 — 35 70 — 35 70 INPUT RIPPLE CURRENT 10 KHZ - 10 MHZ — 15 50 — 15 50 — 15 50 EFFICIENCY TC = 25°C 78 80 — 83 86 — 84 87 — % LOAD FAULT TC = 25°C POWER DISSIPATION SHORT CIRCUIT — 15 20 — 15 20 15 20 W RECOVERY1 — 1.5 50% - 100% - 50% TRANSIENT — 350 450 — 450 700 — RECOVERY3 — 1.5 3.0 — 1.5 3.0 19 - 40 -19 VDC TRANSIENT1, 4 — 250 400 — 250 RECOVERY1, 3 — 200 300 — 200 DELAY — 3.5 6 — 3.5 OVERSHOOT1 — 0 25 — 0 STEP LOAD RESPONSE STEP LINE RESPONSE START-UP Notes: 1. Guaranteed by design, not tested. 2. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. www.craneae.com 4 — 1.5 — 4 — 4 m sec 450 700 mV pk — 1.5 3.0 m sec 400 — 250 400 mV pk 300 — 200 300 μs 6 — 50 — 1.5 mA p-p 3.5 0 6 m sec 50 mV pk 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 μs. Page 6 of 11 Rev D - 20070703 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT Electrical Characteristics: –50°C to +100°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. DUAL OUTPUT MODELS8 PARAMETER OUTPUT VOLTAGE OUTPUT CURRENT2 VIN = 19 TO 40 VDC MFLHP2805D CONDITIONS TC = 25°C MFLHP2812D TYP MFLHP2815D MIN TYP MAX MIN MAX MIN TYP MAX + VOUT 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 - VOUT 4.92 5.00 5.08 11.82 12.00 12.18 14.77 15.00 15.23 EACH OUTPUT 0 — 11.2 0 — 5.3 0 — 4.67 TOTAL OUTPUT 0 — 16.0 0 — 7.5 0 — 6.67 EACH OUTPUT 0 — 56 0 — 63 0 TOTAL OUTPUT 0 — 80 0 — 90 0 — 100 OUTPUT RIPPLE ± VOUT 10 KHZ - 2 MHZ — 25 125 — 50 150 — 50 200 LINE REGULATION VIN = 19 TO 40 VDC + VOUT — 0 50 — 0 50 — 0 50 - VOUT — 25 100 — 25 100 — 25 100 LOAD REGULATION NO LOAD TO FULL + VOUT — 0 50 — 10 100 — 10 100 - VOUT — 25 100 — 50 200 — 50 200 CROSS REGULATION TC = 25°C SEE NOTE 3 SEE NOTE 4 — — 6 7 8 8 — — 2 2 4 4 — — 2 2 4 4 CONTINUOUS OUTPUT POWER2 VIN = 19 TO 40 VDC INPUT VOLTAGE NO LOAD TO FULL INPUT CURRENT TC = 25°C — UNITS VDC A 70 W mV p-p mV mV % 19 28 40 19 28 40 19 28 40 VDC TRANSIENT 50 msec.1, 5 0 — 80 0 — 80 0 — 80 V NO LOAD — 50 120 — 50 100 — 50 100 INHIBITED–INH1 — 9 14 — 9 14 — 9 14 mA INHIBITED–INH2 — 35 70 — 35 70 — 35 70 INPUT RIPPLE CURRENT 10 KHZ - 10 MHZ — 15 50 — 15 50 — 15 50 mA p-p EFFICIENCY TC = 25°C BALANCED LOAD 78 80 — 83 86 — 84 87 — % LOAD FAULT TC = 25°C POWER DISSIPATION SHORT CIRCUIT — 15 20 — 15 20 — 15 20 W RECOVERY1 — 1.5 4.0 — 1.5 4.0 — 1.5 4.0 m sec STEP LOAD RESPONSE ± VOUT 50% - 100% - 50% TRANSIENT — 350 450 — 450 700 — 450 700 mV pk RECOVERY6 — 1.5 3.0 — 1.5 3.0 — 1.5 3.0 m sec STEP LINE RESPONSE ± VOUT 19 - 40 -19 VDC TRANSIENT1, 7 — 250 400 — 250 400 — 250 400 mV pk RECOVERY1, 6 — 200 300 — 200 300 — 200 300 START-UP8 DELAY — 3.5 6 — 3.5 OVERSHOOT1 — 0 25 — 0 Notes: 1. Guaranteed by design, not tested. 2. 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. 3. Effect on negative Vout from 50%/50% loads to 30%/70% or 70%/30% loads. 4. Effect on negative Vout from 50%/50% loads to 10% then 50% load on negative Vout. www.craneae.com 6 — 50 — 3.5 0 μs 6 m sec 50 mV pk 5. Unit will shut down above approximately 45V but will be undamaged and will restart when voltage drops into normal range. 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 μs. 8. Parallel/current share operation is not characterized for dual output models. Page 7 of 11 Rev D - 20070703 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. 90 90 19V 90 19V 28V 75 40V 70 65 28V 80 75 Efficiency (%) 80 40V 70 30 50 70 Output (Watts) 60 10 90 MFLHP2805S & MFLHP2805D Efficiency 28V 80 75 70 40V 65 65 60 10 19V 85 85 Efficiency (%) Efficiency (%) 85 30 50 70 60 10 90 30 50 70 90 100 Output Power (Watts) Output Power (Watts) MFLHP2812S & MFLHP2812D Efficiency MFLHP2815S & MFLHP2815D Efficiency FIGURE 4 FIGURE 5 FIGURE 6 0. 100mV/div. 100% to 50% Vout 100mV/div. 40. 60. 20V/div. 80. 100. 0.1 Frequency (kHz) 50 μs/div 19 to 40 V MFLHP Series Audio Rejection MFLHP2805S Step Line Response 1 10 100 20V/div. Vout 50% to 100% 100% to 50% –Vout 1ms/div No Load 50 μs/div 19 to 40 V MFLHP2805S Turn On Response MFLHP2815D Step Line Response FIGURE 10 www.craneae.com FIGURE 9 Vin +Vout 100mV/div. 20V/div. Vin 1ms/div MFLHP2805S Step Load Response FIGURE 8 FIGURE 7 1V/div. 50% to 100% Vin 200mV/div. Attenuation (dB) 20. FIGURE 11 Page 8 of 11 Rev D - 20070703 1ms/div MFLHP2815D Step Load Response FIGURE 12 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. –Vout 1ms/div No Load MFLHP2815D Turn On Response 19 6 4 2 MFLHP2812D 0 –2 MFLHP2815D –4 –6 –8 30 www.craneae.com 18 MFLHP2815S & 15D 17 MFLHP2812S & 12D 40 50 60 70 Output Load (%) +Pout 70 to 30 %, –Pout 30 to 70% Cross Regulation FIGURE 13 MFLHP2805S & 5D MFLHP2805D Input Voltage (Volts) +Vout –Vout Voltage Change (%) VIN 5V/div. 20V/div. 8 FIGURE 14 Page 9 of 11 Rev D - 20070703 16 30 40 50 60 70 80 Output Power (Watts) Low Line Dropout FIGURE 15 90 100 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converter Cases 28 VOLT INPUT – 100 WATT TOP VIEW CASE U Flanged case, short-leaded *Case U does not require designator in Case Option position of model number. Seam Seal Angled corner indicates pin one. 0.23 (5.8) Lead Length 0.128 dia (3.25). 1.505 (38.23) max. 0.040 dia (1.02) 1.380 (35.05) 1.250 (31.75) 1 12 1.050 (26.67) 2 11 0.850 (21.59) 3 10 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 0.220 (5.59 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 300°C for 10 seconds per pin Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Nickel/Gold; compression glass seal Case U, Rev C, 20060302 Please refer to the numerical dimensions for accuracy. All 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. Copyright © 1999-2006 Interpoint Corp. All rights reserved. FIGURE 16: CASE U www.craneae.com Page 10 of 11 Rev D - 20070703 0.050 (1.27) 0.000 0.400 (10.16) max. 2.880 (73.15) 3.005 (76.33) max. 2.750 (69.85) 0.000 0.120 (3.05) 0.250 (6.35) 0.120 (3.05) 0.000 Crane Aerospace & Electronics Power Solutions MFLHP Single and Dual DC/DC Converters 28 VOLT INPUT – 100 WATT 100°C NON-QML PRODUCTS, MIL-PRF-38534 ENVIRONMENTAL SCREENING TEST PERFORMED 100°C STANDARD NON-QML1 NON-QML1 100°C /ES Pre-cap Inspection Method 2017, 2032 yes yes Temperature Cycle (10 times) Method 1010, Cond. B, -55°C to 125°C, ambient no yes Constant Acceleration Method 2001, 500 g no yes Burn-in 96 hours, typical case temperature 100°C case2 no yes Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case yes yes Hermeticity test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip (1 x 10-3) no no yes yes yes no Final visual inspection Method 2009 yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534 2. Burn-in is still air with an ambient temperature designed to bring the case temperature to 100°C MFLHP Single and Dual, Rev D - 20070703. This revision supercedes 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. MFLHP Series is a trademark of Interpoint. Copyright © 1999 - 2007 Interpoint Corporation. All rights reserved. www.craneae.com Page 11 of 11