M7727 ENERCON | Alldatasheet
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Page 1 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in M7727 SERIES SINGLE-OUTPUT, 500W (750W PEAK) DC TO DC BASEPLATE COOLED POWER SUPPLY The M7727 is a series of mechanically robust, base-plate cooled, high performance, power supplies, designed for Ground Mobile (MIL-STD-1275), Airborne (MIL-STD-704) and other Hi-Reliability applications where 28VDC has to be converted to a tightly regulated, filtered and protected DC output.
Page 2 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Standard Models List (for other voltages – consult factory)
- Additional standard configurations available. Contact factory for more details.
- All of our products can be configured to comply with EU REACH regulations. Contact factory for more details. Part Number Input Output Power Special features Voltage range Voltage Current M7727- 100 18 to 50 VDC 12 VDC 40 A 480W M7727- 101 18 to 50 VDC 15 VDC 33 A 495W M7727- 102 18 to 50 VDC 24 VDC 21 A 504W M7727- 103 18 to 50 VDC 28 VDC 18 A 504W M7727- 104 18 to 50 VDC 48 VDC 10.5A 504W M7727- 106 18 to 50 VDC 28 VDC 18A 504W Parallel operation via output voltage droop. Voltage regulation is ±2%.
Page 3 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in THE MAIN FEATURES OF THE M7727 ARE: ➢ DC/DC Single outputs power supply up to 500W (750W Peak) ➢ 18 to 50VDC Standard Input version ➢ For standard Input version No damage due to abnormal transients IAW MIL-STD-1275A (100 V / 50 ms) and MIL-STD-704A (80 V / 0.1 s) ➢ For extended input version 12 to 100VDC operation - Please contact factory for more details ➢ High efficiency – up to 90% (depending on output voltage). ➢ Full galvanic isolation between Input, Chassis and Outputs ➢ External Inhibit (On/Off) ➢ Fixed switching freq. (250 kHz) ➢ EMI filters included ➢ Remote sense compensation ➢ Indefinite short circuit protection with auto-recovery ➢ Over-voltage protection ➢ Over temperature shutdown with auto-recovery ➢ High density ➢ Conduction cooled via the baseplate
Page 4 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in SPECIFICATIONS: DC Input Voltage Range 18 to 50 VDC Extended input range option: 12 to 100 VDC IAW MIL-STD-1275E Isolation Input to Output: 200 VDC Input to Case: 200 VDC Input Reverse Polarity Protection for unlimited time Under- Voltage Lock- Out The unit shuts down below 15V ± 1V*. Resumes operation at 17V ± 1V*. Min. hysteresis 2V*. *Estimated values. Over-Voltage Lock-Out The unit shuts down above 55V ± 4V. Optional: At 12-100V input unit shuts down 105 ±2V DC Output Rating See table on page 9 Voltage Regulation Better than or equal to ±1% (low to high line voltage, no load to full load, –55 C to +85 C at baseplate). Remote Sense The SENSE is used to achieve accurate load regulations at load terminals (this is done by connecting the pins directly to the load’s terminals). For output voltage above 8V, the use of remote sense has a max limit of 0.25V voltage dropout between converter’s output and load terminals. For output voltage below 8V, the use of remote sense has a max limit of 0.5V voltage dropout between converter’s output and load terminals. When not used connect SENSE 1 to OUT 1 and SENSE 1 RTN to OUT 1 RTN. Ripple Less than 50 mVp-p, typical (max. 1% of output voltage) Isolation Output to Case: 100 VDC Overvoltage Protection
- Active Over-Voltage Protection: The secondary control circuit takes the over if output voltage exceeds 110% ± 5% of nominal voltage. Beyond this, output voltage clamps.
- Passive Over-Voltage Protection: Zener diode installed on output terminals, selected at 120% ± 10% of nominal voltage.
Page 5 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Peak Load Duration Limiter Peak load is enabled for up to 4 seconds. Beyond this, output voltage folds to limit the output power to the nominal value. Efficiency Typical: 88% - 90% Extended input range: 83% - 86% (28VDC output, nominal input, full load, room temperature) Current Limit & Overload Output voltage turns off and on periodically with low duty cycle (hiccup) to protect system conductors and converter from short circuit Over Temp. Protection Output shuts down if base plate temperature exceeds +105C ± 5C. Automatic recovery when baseplate temperature returns to below +95C ± 5C.
Page 6 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Specifications (Cont.): Control & Indication INHIBIT Signal The INHIBIT signal is used to turn the power supply ON and OFF. To turn the power supply OFF, apply a TTL “0” signal or SHORT to SIGNAL RTN. To turn the power supply ON, apply a TTL “1” signal or leave this pin OPEN. If not used (always ON), leave this pin OPEN. This signal is referenced to SIGNAL RTN. ENABLE Signal - Optional - Please consult factory. To turn the power supply OFF, apply a TTL “1” signal or leave this pin OPEN. To turn the power supply ON, apply a TTL “0” signal or SHORT to SIGNAL RTN. SYNC IN 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 SIGNAL RTN SIGNAL RTN INHIBIT and SYNC signals are referenced to this pin. This pin is referenced to IN RTN. POR Optional Protection Override signal (BATTLE SHORT function) overrides over temperature protection and input over/under-voltage lock- out Environment Designed to meet MIL- STD-810F Temperature Methods 501.4 & 502.4 Operating: –55 C to +85 C (at baseplate) Storage: –55 C to +125 C (ambient) Humidity Method 507.4 Up to 95% RH Salt-fog Method 509.4 Altitude Method 500.4 Procedures I – Storage/Air transport: up to 70,000 ft. (non-operational) Procedure II – Operation/Air Carriage: up to 70,000 ft. (operational) Mechanical Shock Method 516.5 Procedure I 50 g / 11 ms terminal peak half-sine shock pulse Vibration Method 514.5 Procedure I 14.76 grms 20-2000 Hz for 500 seconds at each of 3 perpendicular axes.
Page 7 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in Fungus Does not support fungus growth, in accordance with the guidelines of MIL-STD-454, Requirement 4. EMI MIL-STD-461F Meets* MIL-STD-461F CE101, CE102, CS101, CS114, CS115, CS116, RE101, RE102, RS101, RS103 *EMI Compliance achieved with 5μH LISN, shielded harness and static resistive load. (Optional: 50 μH – Please consult factory) Reliability 150,000 hours, calculated per MIL-HDBK-217F Notice 2 at +85 C baseplate, Ground Fix conditions. Cooling Requirements The M7727 is a baseplate cooled unit. The base of the M7727 should be thermally attached to a suitable heatsink that maintains it below +85 °C. Form factor 2.76'' wide, 0.81'' high and 5.31'' deep. For detailed dimensions and tolerances see Drawing: M7727001. Weight Approx. 14.1 oz [400 g] Connectors Connector type: M24308/24-34F or eq. Mates with: M24308/2-4F or eq.
Page 8 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in TYPICAL CONNECTION DIAGRAM M7727 VIN (+) Output RTN Output LoadInput Voltage Inhibit Sense RTN Sense Signal Return Inhibit Sync External Sync VIN RTN (–) POR POR
Page 9 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in PARALLEL OPERATION - TYPICAL CONNECTION DIAGRAM M7727 Inhibit External Sync POR Output Sense Output RTN Sense RTN POR Inhibit Signal Return Sync VIN RTN (–) VIN (+) M7727 Input Voltage Inhibit External Sync POR Output Sense Output RTN Sense RTN POR Inhibit Signal Return Sync VIN RTN (–) VIN (+) Load Note: Parallel operation via output voltage droop. Voltage regulation is ±2%. Outputs Range Output # Voltage Range Current Range Output Regulation Power Range 1 12 to
50 VDC
40A max ±1% 500W max
Page 10 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in PIN ASSIGNMENT: Connector type: M24308/24-34F or eq. Mates with: M24308/2-4F or eq. Pin No. Function P Pin No. Function P Pin No. Function P
1 SENSE +
14 IN RTN –
27 OUT RTN –
2 OUT +
15 IN RTN –
28 OUT RTN –
3 OUT +
16 N.C. 29 SYNC IN +
4 OUT +
17 N.C. 30 IN +
5 OUT RTN –
18 N.C. 31 IN +
6 OUT RTN –
19 N.C. 32 IN +
7 OUT RTN –
20 OUT +
33 IN RTN –
8 OUT RTN –
21 OUT +
34 IN RTN –
9 SENSE RTN – 22 OUT +
35 IN RTN –
10 N.C. 23 OUT +
36 POR +
11 INHIBIT + 24 OUT +
37 SIGNAL RTN –
12 IN +
25 OUT
RTN –
13 IN +
26 OUT
RTN – 1 19 20 37 Note: All pins with identical function/designation should be connected together for optimal performance.
Page 11 of 11 Nov 3, 2022 | Rev (a) | Doc: DS_M7727 Series M7727 Series– DC/DC Power Supply Switzerland sales@enercon-europe.com Israel sales@enercon.co.il India sales@mpsindia.in OUTLINE DRAWING: For detailed dimensions and tolerances see Drawing: M7727001 Note: Specifications are subject to change without prior notice by the manufacturer.