M8737 ENERCON | Alldatasheet
Document overview
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Technical content
Page 1 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in M8737 SERIES DC/DC POWER SUPPLY PRODUCT HIGHLIGHTS
- MINIATURE
- HIGH DENSITY
- TRIPLE OUTPUT
- DC/DC CONVERTER
- UP TO 50W
Page 2 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in
Applications
Military, Ruggedized, Telecom, Industrial Special Features
- Miniature size
- High efficiency
- Wide input range
- Input / Output isolation
- Fixed switching frequency (250 kHz ± 10 kHz)
- External synchronization capability
- TTL logic enable (Inhibit)
- EMI filters included
- Indefinite short circuit protection with auto-recovery
- Over-voltage protection
- Over temperature shutdown with auto-recovery Environmental Conditions Meets or exceeds MIL-STD-810D Temperature: Operating: –55C C to +85 C (baseplate) Storage: –55C C to +125 C Vibration: Opertational, random, 15-2000 Hz, 13.71 grms, 1hr, 3 perpendicular axes Mechnical Shock:
- 100 g, 6 ms, Half sine
- 30 g, 11 ms, Half sine Altitude Method 500.4 Procedures I – Storage/Air transport: Up to 70,000 ft. (non-operational) Procedures II – Operation/Air Carriage: Up to 70,000 ft. (operational) Reliability Over 288,000 hours at +50 C baseplate; Over 150,000 hours at +85 C baseplate; Calculated per MIL-STD-217F Notice 2, Airborne Unihabited Fighter (AUF) environment. Electrical Specifications DC Input DC Input range: 18 to 48 VDC Input transient protection: All models meet or exceed (no damage) MIL-STD-1275A (100 V for 50 ms) and MIL-STD-704A, MIL-STD-704D (80 V for 0.1 s) Efficiency: up to 80% EMC: Designed to meet* MIL-STD-461F CE101, CE102, CS101, CS114, CS115, CS116, RE101, RE102, RS101, RS103 Isolation: Input to Output: 200 VDC Input to Case: 200 VDC DC Outputs (floating from each other) Line/Load regulation: Up to ±1% (no load to full load, –55 C to +85 C and over input voltage range) Ripple and Noise: 50 mVp-p, typical (max. 1%) Current limiting (Hiccup): Continuous protection for unlimited time Over voltage protection: Passive transorb on outputs. Over temperature protection: Shutdown at baseplate temperature above +105 C ± 5 C. Automatic recovery at baseplate temperature below +95 C ± 5 C. Isolation: Output and Case: 100 VDC * Compliance achieved with 5μH LISN, shielded harness and static resistive load.
Page 3 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Operational Block Diagram OUTPUT 1 SENSE RTN INPUT SYNC INHIBIT ControlSIGNAL RTN EMI FILTER Isolated DC/DC Converter OUTPUT FILTER SENSE Isolated DC/DC Converter LDO Regulator LDO Regulator OUTPUT FILTER OUTPUT FILTER OUTPUT 1 RTN OUTPUT 2 OUTPUT 2 RTN OUTPUT 3 OUTPUT 3 RTN Outputs Range Output # Voltage Range Current Range Power Range 1 1.8 to 70 VDC 0 to 10 A 0 to 45 W 2 2.5 to 24 VDC 0 to 2.5 A 0 to 20 W 3 2.5 to 24 VDC 0 to 1.25 A 0 to 20 W Total 0 to 50 W
Page 4 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Pin Assignment Connector type: Airborn RM272-020-312-2900 or eq. Mates with: Airborn RM242-020-241-5900 (solder cup terminations) or RM242-020-571-5900 (#20-22 AWG crimp contacts) or eq. Pin No. Function Pin No. Function
1 OUT 2 (+)
11 OUT 2 RTN (–)
2 OUT 3 (+)
12 SYNC IN
3 OUT 3 RTN (–)
13 CHASIS
4 VIN (+)
14 INHIBIT
5 VIN (+)
15 SIGNAL RTN
6 SENSE 1 (+)
16 VIN RTN (–)
7 VIN RTN (–)
17 SENSE 1 RTN (–)
8 OUT 1 (+)
18 OUT 1 (+)
9 OUT 1 (+)
19 OUT 1 RTN (–)
10 OUT 1 RTN (–)
20 OUT 1 RTN (–)
Note: 1. The SIGNAL RTN is referred to the input. 2. SINGAL RTN is the return path for SYNC IN and INHIBIT signals 1 10
Page 5 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Functions and Signals INHIBIT signal The INHIBIT signal is used to turn the power supply ON and OFF. TTL “1”or OPEN – will turn the power supply ON (For normal operation leave the signal not connected). TTL “0” or short– will turn the power supply OFF. This signal is referenced to the SIGNAL RTN pin. SYNC IN signal The SYNC IN signal is used to allow the power supply frequency to sync with the system frequency. The system frequency should be 250 kHz ± 10 kHz. When not connected the power supply will work at 250 kHz ± 10 kHz. This signal is referenced to the SIGNAL RTN pin. SIGNAL RTN The SIGNAL RTN pin is used as a return path for SYNC IN and INHIBIT signals. This pin is referenced to the VIN RTN pin. SENSE 1 The SENSE 1 is used to achieve accurate load regulation at output #1's load terminals. This is done by connecting the pins directly to the load terminals. The remote sense correction function is limited to voltage drop between converter’s output and load terminals of 2% to 5%, or up to 0.5V, the least of the two. When not used, connect SENSE 1 to OUT 1 and SENSE 1 RTN to OUT 1 RTN. These pins can be tied internally if not required, to avoid adding this external connection – consult factory.
Page 6 of 6 Jan 31, 2024 | Rev j | Doc: DS_M8737 Series M8737 SERIES DC/DC POWER SUPPLY Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Outline Drawing Heat Dissipation Surface Specifications are subject to change without prior notice by the manufacturer. Notes 1. Dimensions are in Inches [mm] 2. Tolerance is: .XX 0.01 IN .XXX 0.005 IN 3. Weight: Approx. 4.4 oz (125 g) Dissipation Area 2.5785 in² (1663.5 mm²)