
PSS, PSK Extended Data Sheet
Positive Switching Regulator (Industrial)
REV. FEB 25, 2004
Page 1 of 19
Input voltage up to 80 V DC
Single output of 3.3 to 36 V DC
No input to output isolation
High efficiency up to 96%
Wide input voltage range
Low input to output differential voltage
Very good dynamic properties
Input undervoltage lock-out
Active current sharing for parallel operation
Output voltage adjustment, inhibit and sense lines
Fast dynamic response
Continuous no-load and short-circuit proof
No derating
Table of Contents
Page
Summary ......................................................................... 1
Model Selection and Key Data ........................................ 2
Part Number Description ................................................. 2
Functional Description .................................................... 3
Electrical Input Data ........................................................ 3
Electrical Output Data ...................................................... 4
Auxiliary Functions .......................................................... 8
Page
Electromagnetic Compatibility (EMC) ........................... 10
Immunity to Environmental Conditions ......................... 11
Mechanical Data ........................................................... 12
Safety and Installation Instructions ................................ 14
Description of Options ................................................... 16
Accessories ................................................................... 18
EC Declaration of Conformity ........................................ 19
Summary
The PSS/PSK series of positive switching regulators is de-
signed as power supply modules for electronic systems.
Their major advantages include a high level of efficiency
that remains virtually constant over the entire input range,
high reliability, low ripple and excellent dynamic response.
Modules with input voltages up to 80 V are specially
designed for secondary switched and battery-driven appli-
cations. The standard case design with heat sink allows op-
eration at nominal load up to 71°C without additional cool-
ing, suitable for 19" rack or chassis mounting.
Replacing the heat sink by an optional cooling plate B or B1,
allows chassis or wall mounting on top of a metal surface,
acting as heat sink.
Connector type according to DIN 41612:
– H15 for output current up to 16 A
– H15 S4 with four high current jacks for output current
≥ 20 A
Safety according to IEC/EN 60950, UL 1950
168
6.6"
80
3.2"
16 TE
111
4.4"
3 U
168
6.6"
60
2.4"
12 TE
111
4.4"
3 U