Data Sheet

December 12, 2008

EQW012/020/023/025 Series, Eighth-Brick Power Modules:

36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output

2

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are

absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in

excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for

extended periods can adversely affect the device reliability.

Parameter

Device

Symbol

Min

Max

Unit

Input Voltage

EQW

-0.3

80

Continuous

Transient (100ms)

EQW

-0.3

100

Operating Ambient Temperature

All

-40

85

°C

(see Thermal Considerations section)

Storage Temperature

All

-55

125

°C

I/O Isolation Voltage (100% factory Hi-Pot tested)

All

⎯

⎯

1500

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature

conditions.

Parameter

Device

Symbol

Min

Typ

Max

Unit

Operating Input Voltage

All

36

48

75

Maximum Input Current

All

3

Input No Load Current

All

75

mA

(Vin = 48Vdc, Io = 0, module enabled)

Input Stand-by Current

All

3

mA

(Vin = 48Vdc, module disabled)

Inrush Transient

All

I

1

A

Input Reflected Ripple Current, peak-to-peak

All

13

Input Ripple Rejection (120Hz)

All

50

dB

EMC, EN55022

See EMC Considerations section

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This power module can be used in a wide variety of applications, ranging from simple standalone operation to an

integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included,

however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies

require a fast-acting fuse with a maximum rating of 6A (see Safety Considerations section). Based on the information

provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating

can be used. Refer to the fuse manufacturer’s data sheet for further information.