PSS, PSK Extended Data Sheet
Positive Switching Regulator (Rugged)
Input voltage up to 144 VDC
Single output of 12 to 48 VDC
No input to output isolation
• High efficiency up to 97%
• Extremely 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
111
4.4"
3 U
60
2.4"
12 TE
168
6.6"
• Continuous no-load and short-circuit proof
• No derating
Safety according to IEC/EN 60950, UL 1950
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 144 V are specially
designed for secondary switched and battery-driven
mobile applications. The standard case design with heat
sink allows operation at nominal load up to 71°C without
additional cooling, suitable for 19" rack or chassis
mounting.
111
4.4"
3 U
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.
80
3.2"
16 TE
168
6.6"
Connector type: H15 (according to DIN 41612).
Table of Contents
Page
Page
Summary ......................................................................... 1
Model Selection and Key Data........................................ 2
Part Number Description and Product Marking .............. 2
Functional Description .................................................... 3
Electrical Input Data ........................................................ 3
Electrical Output Data ...................................................... 4
Auxiliary Functions .......................................................... 7
Electromagnetic Compatibility (EMC) ............................. 9
Immunity to Environmental Conditions ......................... 10
Mechanical Data ........................................................... 11
Safety and Installation Instructions................................ 13
Description of Options ................................................... 15
Accessories ................................................................... 17
EC Declaration of Conformity ........................................ 18
REV. FEB. 25 2004
Page 1 of 18