EMI FILTERED DC/DC CONVERTERS 28 VOLT INPUT FEATURES FMTR SERIES 30 WATT • EMI input filter, up to 50 dB attenuation • –55° to +125°C operation • High frequency output filter • 17 to 40 VDC input • Fully isolated, magnetic feedback • 600 kHz typical–Single Ended Forward • Inhibit and synchronization functions • Indefinite short circuit protection • Trim and remote sense on singles • Up to 83% efficiency • Up to 50V for 50 ms transient protection MODELS VDC OUTPUT SINGLE DUAL 3.3 ±5 5 ±12 12 ±15 15 Size (max): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) Weight: 100 grams maximum Screening: Standard or ES, see the Environmental Screening table DESCRIPTION The FMTR Series™ of DC/DC converters offers up to 30 watts of output power from single or dual output configurations. They operate over the full military temperature range with up to 83% efficiency. FMTR converters are packaged in hermetically sealed metal cases, making them ideal for use in military, aerospace and other high reliability applications. CONVERTER DESIGN The FMTR converters are constant frequency, pulse-width modulated switching regulators which use a quasi-square wave, single ended, forward converter design. Tight load regulation is maintained via wide bandwidth magnetic feedback and, on single output models, through use of remote sense. Indefinite short circuit protection and overload protection are provided by a constant current-limit feature. This protective system senses current in the converter’s secondary stage and limits it to approximately 115% of the maximum rated output current. BUILT-IN FILTERS The built-in input and output filters reduce layout issues and conserve board space. The 2.7 amp EMI input filter meets MIL-STD461C, CE03 and allows filtering of additional converters through the filter output pins. The output filter reduces high frequency common and differential mode noise. It allows a higher bandwidth ripple voltage measurement and eliminates the need for external output decoupling capacitors. Both input and output filters reduce radiated emissions providing quieter operation than conventional DC/DC converters. WARNING: REQUIRED DAMPING NETWORK To prevent damage to the internal circuitry an external capacitor and resistor are required across the filter outputs (pins 3 and 4) as shown in Figure 1. This applies to both single and dual output models. The recommended capacitor type is wet tantalum, MIL-C39006. EMI Input Filter 2.7 A max. 28 Vin 8 + +Vin + 4 Filter Output Required damping 220 µF network 2.2 Ω Input Common 7 – Rtn ~ Inhibit – Additional DC/DC Converters 3 Filter Output Rtn Inhibit 5 + Vin – Inh Sync 1 Sync Inhibit/Sync 2 Return Sync Rtn 11 Positive Output + Vout – DC/DC Converter High Frequency Output Filter 10 Output Common FIGURE 1: FMTR TYPICAL INPUT INTERFACE APPLIES TO SINGLES AND DUALS (SHOWN WITH SINGLE OUTPUT) 1 DC/DC CONVERTERS FMTR SERIES 30 WATT SYNC AND INHIBIT ABSOLUTE MAXIMUM RATINGS TYPICAL CHARACTERISTICS Sync (500 to 675 kHz) • Duty cycle 40% min, 60% max • Logic low 0.8 V max • Logic high 4.5 V min, 5 V max • Referenced to inh/sync return • If not used, connect to inh/sync return Inhibit TTL Open Collector • Logic low (output disabled) Voltage ≤0.8 V Inhibit pin current 8.0 mA max • Referenced to inh/sync return • Logic high (output enabled) Open collector Input Voltage • 17 to 40 VDC Output Power • 25 to 30 watts depending on model • Input filter current, 2.7 A max. Lead Soldering Temperature (10 sec per pin) • 300°C Storage Temperature Range (Case) • –65°C to +135°C RECOMMENDED OPERATING CONDITIONS Input Voltage Range • 17 to 40 VDC continuous • 50V for 50 ms transient protection Case Operating Temperature (Tc) • –55°C to +125°C full power • –55°C to +135°C absolute Derating Output Power/Current • Linearly from 100% at 125°C to 0% at 135°C Output Voltage Temperature Coefficient • 100 ppm/°C typical Input to Output Capacitance • 50 pF typ Current Limit • 115% of full load typical Isolation • 100 megohm minimum at 500 V Audio Rejection • 40 dB typical Conversion Frequency • Free run 550 min, 600 typ, 650 max kHz • External sync 500 to 675 kHz Inhibit Pin Voltage (unit enabled) • 9 to 11 V Input Filter DC Resistance • 0.2 ohms max EMI FILTER Noise Rejection 500 kHz 1 MHz 5 MHz - Minimum 55 dB 60 dB 60 dB Electrical Characteristics: -55°C to +125° Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. SINGLE OUTPUT MODELS PARAMETER OUTPUT VOLTAGE FMTR283R3S FMTR2805S FMTR2812S FMTR2815S OUTPUT CURRENT1 CONDITION 25°C –55°C TO +125°C VIN = 17 to 40 VDC MIN 3.26 3.20 0 TYP 3.30 3.30 –– MAX 3.34 3.40 6.06 MIN 4.95 4.85 0 TYP 5.00 5.00 — MAX MIN TYP MAX MIN TYP MAX 5.05 11.88 12.00 12.12 14.85 15.00 15.15 5.15 11.64 12.00 12.36 14.55 15.00 15.45 5.0 0 — 2.5 0 — 2.0 UNITS OUTPUT POWER1 VIN = 17 to 40 VDC 0 — 20 0 — 25 0 — 30 0 — 30 OUTPUT RIPPLE 25°C 10 kHz – 2 MHz VOLTAGE LINE REGULATION2 VIN = 17 to 40 VDC — — — 70 — — 140 180 10 — — — 110 — 15 220 260 50 — — — 60 — 15 120 160 50 — — — 25 — 15 50 90 50 LOAD REGULATION NO LOAD TO FULL — — 10 — 15 50 — 15 50 — 15 50 mV INPUT VOLTAGE1 NO LOAD TO FULL 17 28 40 17 28 40 17 28 40 17 28 40 VDC INPUT CURRENT1 NO LOAD INHIBITED — — 30 7 75 8 — — 35 3 75 8 — — 35 3 75 8 — — 35 3 75 8 mA mA 10 kHz – 10 MHz — 25°C 73 70 5 75 72 10 — — — 75 72 5 77 74 10 — — — 79 76 5 82 78 10 — — — 80 77 5 83 79 10 — mA p-p — — 1.4 10 12 6 — — — — — 1.4 10 12 5 — — — — — 1.4 10 12 5 — — — — — 1.4 10 12 5 VDC A W mV p-p mV INPUT RIPPLE CURRENT EFFICIENCY LOAD FAULT3 STEP LOAD RESP. STEP LINE RESP.6 START-UP1 INCLUDES FILTER POWER DISSIPATION SHORT CIRCUIT 25°C –55°C TO +125°C RECOVERY 4, 6 50% – 100% – 50% TRANSIENT RECOVERY4, 6 17 – 40 – 17 VDC TRANSIENT5 RECOVERY4 DELAY OVERSHOOT6 FULL LOAD NO LOAD — — — — — ±125 ±250 — 200 W ms — — ±200 ±300 60 200 — — ±250 ±400 60 200 — — ±350 ±500 60 200 mV pk µs ±200 ±300 — 300 — — ±400 ±500 — 300 — — ±500 ±600 — 300 mV pk µs — — — — ±300 300 — — — 1.4 5 — 1.4 5 — 1.4 5 — 1.4 5 ms — — 0 33 50 150 — — 0 50 50 250 — — 0 120 120 600 — — 0 150 150 750 mV pk Notes 1. Tc = –55°C to +125°C 2. Operation is limited below 17V (see Figure 19). 3. Indefinite short circuit protection not guaranteed above 125°C case. 4. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 2 % 5. Transition time ≥10 µs. 6. Parameter shall be tested as part of device characterization and after design and process changes. Thereafter, parameters shall be guaranteed to the limits specified in the electrical Characteristics table. FMTR SERIES 30 WATT DC/DC CONVERTERS Electrical Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. DUAL OUTPUT MODELS PARAMETER OUTPUT VOLTAGE CONDITIONS 25°C +VOUT FMTR2805D MIN TYP MAX 4.95 5.00 5.05 FMTR2812D MIN TYP MAX 11.88 12.00 12.12 FMTR2815D MIN TYP MAX 14.85 15.00 15.15 –VOUT 4.90 5.00 5.08 11.80 12.00 12.18 14.76 15.00 15.23 –55°C TO +125°C +VOUT 4.85 5.00 5.15 11.64 12.00 12.36 14.55 15.00 15.45 –VOUT 14.46 15.00 15.53 UNITS VDC 4.80 5.00 5.18 11.56 12.00 12.42 OUTPUT CURRENT1, 2 VIN = 17 TO 40 VDC 0 2.5 4.5 0 1.25 2.25 0 1.0 1.8 A OUTPUT POWER1, 2 VIN = 17 TO 40 VDC 0 — 25 0 — 30 0 — 30 W — 75 140 — 25 80 — 40 80 — — 180 — — 120 — — 120 OUTPUT RIPPLE VOLTAGE +/– VOUT 25°C 10 kHz - 2 MHz LINE REGULATION +VOUT — 10 50 — 10 50 — 10 50 VIN = 17 TO 40VDC –VOUT — 50 100 — 50 150 — 50 180 LOAD REGULATION +VOUT — 5 50 — 15 50 — 15 50 NO LOAD TO FULL –VOUT — 45 120 — 45 170 — 40 190 — 8 — — 5 — — 3 — mV p-p mV mV CROSS REGULATION 25°C SEE NOTES 4 & 9 EFFECT ON –VOUT 25°C SEE NOTES 5 & 9 — 5 — — 4 — — 4 — INPUT VOLTAGE1 NO LOAD TO FULL INPUT CURRENT CONTINUOUS TRANSIENT 50 ms NO LOAD INHIBITED 17 0 — — 28 — 35 3 40 50 75 8 17 0 — — 28 — 50 3 40 50 75 8 17 0 — — 28 — 50 3 40 50 75 8 VDC V mA mA 10 kHz - 10 MHz 25°C — 75 72 5 77 74 10 — — — 78 75 5 80 77 10 — — — 79 76 5 82 78 10 — — mA p-p — — — — — 1.4 10 12 5.0 — — — — — 1.4 10 12 5.0 — — — — — 1.4 10 12 5.0 ms INPUT RIPPLE CURRENT1 EFFICIENCY LOAD FAULT6 STEP LOAD RESPONSE ± VOUT STEP LINE9 RESPONSE ± VOUT START–UP1 POWER DISSIPATION 25°C SHORT CIRCUIT RECOVERY9 50 – 100 – 50% BALANCED TRANSIENT % % W — ±200 ±300 — ±150 ±300 — ±200 ±400 mV pk RECOVERY7, 9 17 – 40 – 17 VIN TRANSIENT8 — 100 200 — 100 200 — 100 200 µs — ±200 ±400 — ±200 ±400 — ±400 ±500 mV pk RECOVERY7 DELAY — — — 1.4 300 5 — — — 1.4 300 5 — — — 1.4 300 5 µs ms OVERSHOOT9 FULL LOAD — 0 50 — 0 120 — 0 150 NO LOAD — 50 250 — 120 600 — 150 750 Notes 1. Tc = –55°C to +125°C. 2. Up to 90% of the total output current/power is available from either output providing the positive output is carrying at least 10% of the total output power. 3. Operation is limited below 17 V (see Figure 19). 4. Effect on the negative output under the following conditions: +Pout 20% to 80%; –Pout 80% to 20% 5. Effect on the negative output under the following conditions: +Pout 50%; –Pout 10% to 50% mV pk 6. Indefinite short circuit protection not guaranteed above 125°C case. 7. Recovery time is measured from application of the transient to point at which Vout is within 1% of final value. 8. Transition time ≥ 10 µs. 9. Parameter shall be tested as part of device characterization and after design and process changes. Thereafter, parameters shall be guaranteed to the limits specified in the electrical Characteristics table. 3 DC/DC CONVERTERS FMTR SERIES 30 WATT TRIM AND REMOTE SENSE (AVAILABLE ON SINGLE OUTPUT MODELS ONLY) FMTR SINGLE OUTPUT CONVERTER FMTR SINGLE OUTPUT CONVERTER 8 8 +VIN OUTPUT COMMON SENSE RETURN 10 9 RL 12 SENSE INPUT COMMON 7 POSITIVE OUTPUT OUTPUT COMMON SENSE RETURN +VIN 1 10 2 9 RL 12 1 RT 2 SENSE 11 INPUT COMMON 7 EXTERNAL TRIM CONNECTION POSITIVE OUTPUT 11 REMOTE SENSE CONNECTION 1 Make connections at converter. 2 Make connections at load. FIGURE 3: REMOTE SENSE2, 3 FIGURE 2: TRIM CONNECTION1, 2, 3 Trim Formulas Vout = desired output voltage; Rt = trim resistor 3.3V: Rt = 1300 * Vout – 4304 1.2475 5V: Rt = 1300 * Vout – 6512 1.2475 12V: Rt = 1300 * Vout – 15631 1.2475 15V: Rt = 1300 * Vout – 19498 1.2475 Notes for Remote Sense and Trim 1. When trimming output voltage and/or remote sensing, the total output voltage increase must be less than 0.6 volts at the converters pins to maintain specified performance. 2. If neither voltage trim nor remote sense will be used, connect pin 9 to pin 10 and pin 11 to pin 12 or the output voltage will increase by 1.2 volts 3. CAUTION: The converter will be permanently damaged if the positive remote sense (pin 12) is shorted to ground. Damage may also result if the output common or positive output is disconnected from the load with the remote sense leads connected to the load. PIN OUT Angled corner indicates pin one. 12 1 11 2 3 4 TOP VIEW FMTR (Pin side, marked side) 9 5 8 6 7 See page 7 for dimensions. FIGURE 4: PIN OUT 4 10 Pin 1 2 3 4 5 6 7 8 9 10 11 12 Single Output Sync Inhibit/Sync Rtn Filter Out Rtn Filter Out Inhibit No connection Input Common 28 V Input Sense Rtn Output Common Positive Output Positive Sense Dual Output Sync Inhibit/Sync Rtn Filter Out Rtn Filter Out Inhibit No connection Input Common 28V Input No connection Negative Output Output Common Positive Output FMTR SERIES 30 WATT DC/DC CONVERTERS MODEL NUMBERING KEY FMTR 28 12 D / 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: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. 87 85 85 16V 16V 16V 75 70 40V 75 40V 70 5 10 15 20 60 25 40V 72 62 5 10 15 20 5 10 15 20 25 OUTPUT POWER (Watts) OUTPUT POWER (Watts) OUTPUT POWER (Watts) FMTR2805S EFFICIENCY FMTR2812S EFFICIENCY FMTR2815S EFFICIENCY FIGURE 5 FIGURE 7 FIGURE 6 85 90 16V 0 EFFICIENCY (%) 75 70 40V 65 10 16V 85 20 28V ATTENUATION (dB) 28V 80 EFFICIENCY (%) 77 67 65 65 60 28V EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 28V 28V 82 80 80 80 40V 75 70 30 40 50 60 70 80 90 60 5 10 15 20 OUTPUT POWER (Watts) FMTR2812D EFFICIENCY FIGURE 8 65 5 10 15 20 100 0.1 1 10 OUTPUT POWER (Watts) FREQUENCY (kHz) FMTR2815D EFFICIENCY AUDIO REJECTION, FMTR SERIES FIGURE 9 100 FIGURE 10 5 FMTR SERIES 30 WATT DC/DC CONVERTERS 20V/div 25W to 12.5W VIN 1V/div 100mV/div 20mV/div 20V/div Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified. VOUT VIN VOUT 12.5W to 25W 50µs/div 50% 100% FMTR2805S STEP LOAD RESPONSE FMTR2805S TURN-ON INTO NO LOAD FIGURE 13 FIGURE 12 –POUT =15W VIN 20V/div FIGURE 11 20V/div 500 µs / div 50µs/div 16 TO 40V FMTR2805S STEP LINE RESPONSE VIN 100mV/div 15W to 7.5W +VOUT 5V/div 20mV/div +VOUT –VOUT 7.5W to 15W –VOUT 50µs/div 16 TO 40 50µs/div 25% 50% FMTR2815D STEP LINE RESPONSE FMTR2815D +VOUT STEP LOAD RESPONSE FIGURE 14 16.0 15.5 2812D INPUT VOLTAGE (Volts) 8 7 6 5 4 3 2 1 0 –1 –2 –3 –4 –5 –6 –7 –8 2805D COND A 2815D COND B 2805D 2812D 15.0 14.5 14.0 13.5 13.0 10 20 30 40 50 OUTPUT LOAD (Watts) 10% to 90% LOAD +V 90% to 10% LOAD –V OUTPUT LOAD (%) COND. B: 50% LOAD +V, 50% to 10% –V COND. A: 50% LOAD –V, 50% to 10% +V CROSS REGULATION CROSS REGULATION FIGURE 17 6 FIGURE 16 FIGURE 15 –VOUT VOLTAGE CHANGE (%) –VOUT VOLTAGE CHANGE (%) 10 9 8 7 2812D 6 5 4 2805D 3 2 1 2815D 0 -1 2815D -2 -3 -4 2812D -5 -6 2805D -7 -8 -9 -10 +POUT 0 3 6 9 12 15 18 21 24 27 30 –POUT 30 27 24 21 18 15 12 9 6 3 0 200µs/div FMTR2815D TURN-ON INTO NO LOAD FIGURE 18 9 12 15 18 21 24 27 30 OUTPUT POWER (Watts) 1% DROP FMTR SINGLES AND DUALS LOW LINE DROPOUT FIGURE 19 FMTR SERIES 30 WATT DC/DC CONVERTERS Angled corner indicates pin one CASE U TOP VIEW (PIN SIDE) 1.505 max (38.23) 3.005 (76.33) max. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold compression glass seal FIGURE 20: CASE U MAXIMUM DIMENSIONS 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 TOP VIEW CASE U 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 0.220 (5.59 0.050 (1.27) 0.000 0.410 (10.41) 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 FIGURE 21: CASE U 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. 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 Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer to the numerical dimensions for accuracy. 7 FMTR SERIES 30 WATT DC/DC CONVERTERS ENVIRONMENTAL SCREENING TEST 125°C STANDARD 125°C /ES PRE-CAP INSPECTION 25°C Method 2017, 2032 yes yes TEMPERATURE CYCLE (10 times) Method 1010, Cond. B, -55°C to 125°C no yes CONSTANT ACCELERATION 25°C Method 2001, 500 g no yes BURN-IN 96 hours at 125°C case (typical) no yes FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case yes yes HERMETICITY TESTING 25°C 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 25°C Method 2009 yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Contact Information: www.interpoint.com Interpoint Headquarters USA Phone: 1-800-822-8782 +425-882-3100 Email: [email protected] Interpoint UK Phone: +44-1252-872266 Email: [email protected] 8 FMTR 28001-001-DTS Rev E. 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. FMTR Series is a trademark of Interpoint. Copyright © 1994 - 2002 Interpoint Corporation. All rights reserved. Interpoint France Phone: +33-134285455 Email: [email protected]