M255 SERIES HOLD-UP POWER SUPPLY

Date: June 9, 2021

Rev (g)

Page 2 of 5

Applications

Military, Ruggedized, Telecom, Industrial

Special Features

• Miniature size

• High efficiency

• Wide input range

• Fixed switching frequency

• External Synchronization (250  10 kHz)

• EMI filters included

• Indication for Input failure and Hold-Up

activation

• External capacitor required.

• Operates together with MPS standard modules.

Please consult factory for specific applications.

• More than 990 W·msec per 1 mF capacitance

Environmental Conditions

Meets or exceeds MIL-STD-810C

Temperature:

Operating: –55 C to +85 C (baseplate)

Storage:

–55 C to +125 C

Vibration level:

Up to 9 grms. For higher vibration levels -

please consult factory.

Reliability

150,000 hours, calculated per

MIL-STD-217F at +85 C baseplate,

Ground Fixed.

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 Sec)

Steady State input current:

< 50 mA

EMC:

Designed to meet* MIL-STD-461C:

CE01, CE03, CS06, CS01, RE02, RS02, RS03

Isolation:

200V between Input and Case 200V

between Output and Case

DC OUTPUT

Normal input voltage range:

According to the external capacitor

Output current capacity:

12 A max.

Consult factory if higher current required.

Isolation:

Output to Case: 200 VDC

* Compliance achieved when tested with shielded cable and static resistive load.