Datasheet

HWD Series – 75 Watt, Half-Brick DC/DC Converter

Wide Input Range

Dual Output

REV. 9/01

www.power-one.com

Absolute Maximum Ratings Table 1.

Parameter

Symbol

Min

Max

Units

Input Voltage

Continuous

Transient (100 msec)

Vi

Vi

-

-

60

100

Vdc

Vdc

Operating Baseplate Temperature

Note 1

Tb

-40

+100

Storage Temperature

Tstg

-55

+125

Input to Output Isolation

-

-

1500

Vdc

Output Short Circuit Duration

-

-

Continuous

-

Total Output Power

Pomax

-

75

W

No Load Power Dissipation

-

6

W

Electrical Specifications

Unless otherwise indicated, specifications apply over all input voltages, resistive load, and Tbp=+40

Table 2. Input Specifications

Parameter

Symbol

Min

Typ

Max

Units

Voltage Range

Vi

18*

24/48

60

Vdc

Maximum Input Current

Ii

-

-

5.5

A

Input Ripple Rejection (120Hz)

-

60

-

dB

Inrush Transient

-

-

1

A

-

-

250

mAp-p

* Module will operate within specification with an input voltage of 18 Vdc, but must be turned on with an input voltage > 19.5 Vdc. See

Undervoltage Lockout Specification.

Fusing considerations

Caution: This DC-DC converter is not internally fused. An external input fuse must always be used.

Table 3. Output Specifications

Parameter

Symbol

Min

Typ

Max

Units

Output Power

Po1

Po2

Po1+Po2

-

-

-

-

-

-

75

50

75

W

W

W

Output Voltage Set Point

(Vi=24Vdc or Vi=48Vdc,

Io1,Io2=7.5A)

Vo1

Vo2

4.9

3.23

5.0

3.3

5.1

3.37

Vdc

Vdc

Output Line Regulation:

(Vi=Vi,min to Vi,max)

(Io1, Io2=7.5A)

Vo1,Vo2

-

0.05

0.2

%

Output Load Regulation:

(Io,min to Io,max)

Vo1,Vo2

-

0.5

1

%