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LW020G

Single-Output-Series Power Modules: 36 Vdc to 75 Vdc Inputs; 20 W

Tyco Electronics -> TE Connectivity 

LW020 Single-Output-Series Power Modules:

36 Vdc to 75 Vdc Inputs; 20 W

Data Sheet

January 2000

Absolute Maximum Ratings

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

absolute stress ratings only. Functional operation of the devices 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

Input Voltage:

Continuous

Transient (100 ms)

Operating Case Temperature

(See Thermal Considerations section.)

Storage Temperature

I/O Isolation Voltage

Symbol

Min

VI

VI, trans

TC

0

0

–40

Tstg

–40

—

—

* Maximum case temperature varies based on power dissipation. See derating curve, Figure 16, for details.

Max

80

100

110*

120

1500

Unit

Vdc

V

°C

°C

Vdc

Electrical Specifications

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

conditions.

Table 1. Input Specifications

Parameter

Operating Input Voltage

Maximum Input Current

(VI = 0 V to VI, max; IO = IO, max; see Figure 1.)

Inrush Transient

Input Reflected-ripple Current

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

TC = 25 °C; see Figure 11 and Design

Considerations section.)

Input Ripple Rejection (100 Hz—120 Hz)

Symbol Min

Typ

Max

Unit

VI

36

48

75

Vdc

II, max

—

—

1.1

A

i2t

—

—

0.1

A2s

II

—

3

—

mAp-p

—

—

60

—

dB

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 fuse with a maximum rating of 5 A (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 for further information.

2

Tyco Electonics Corp.

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