22

Lineage Power

Data Sheet

April 2008

36 Vdc to 75 Vdc Input; 25 W

CW025 Triple-Output-Series Power Modules:

Absolute Maximum Ratings

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

lute 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 device reliability.

Parameter

Symbol

Min

Max

Unit

Input Voltage Continuous

VI

—

80

Vdc

I/O Isolation Voltage:

dc

Transient (1 minute)

—

—

—

—

500

850

V

V

Operating Case Temperature

TC

–40

100

°C

Storage Temperature

Tstg

–55

125

°C

Electrical Specifications

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

temperature conditions.

Table 1. Input Specifications

Parameter

Symbol

Min

Typ

Max

Unit

Operating Input Voltage

VI

36

48

72*

Vdc

Maximum Input Current

(VI = 0 V to 75 V; IO = IO, max)

II, max

—

—

2.0

A

Inrush Transient

i2t

—

—

0.2

A2s

Input Reflected-ripple Current, Peak-to-peak

(5 Hz to 20 MHz, 12 µH source impedance;

TC = 25 °C; see Figure 18 and Design

Considerations section.)

—

—

25

—

mAp-p

Input Ripple Rejection (120 Hz)

—

—

60

—

dB

* Operation is specified to 75 V, provided the minimum load on Output 1 is at least 0.75 A. Safety agency reports specify 75 V maximum input.

Fusing Considerations

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

This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone

operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-

ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The

safety agencies require a normal-blow, dc fuse with a maximum rating of 5 A in series with the ungrounded input

lead. 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 for further information.