PSK / PSS Series
Positive Switching Regulators
The PSK/PSS Series of positive switching regulators is de-
signed as power supplies for electronic systems, where no
input-to-output isolation is required. Their major advantages in-
clude a high level of efficiency, high reliability, low output ripple,
and excellent dynamic response. Models with input voltages
up to 144V are specially designed for secondary switched and
battery-driven mobile applications. The converters are suitable
for railway applications according to EN 50155 and EN 50121.
Two types of housing are available allowing operation up to
71 °C. They are designed for insertion into a 19" DIN-rack or
for chassis mounting. Replacing the heat sink by an optional
cooling plate, allows chassis or wall mounting on top of a metal
surface, acting as heat sink.
Various options are available to adapt the converter to differ-
ent applications. Connector type: H15 or H15S4, depending on
output current.
111
4.4ꢀ
3 U
Features
80
3.2ꢀ
16 TE
168
6.6ꢀ
• RoHS lead-free-solder and lead-solder-exempted
products are available
• 5 year warranty for RoHS compliant products with an
extended temperature range
• Input voltage up to 144 VDC
• Single output of 5.1 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 lockout
111
4.4ꢀ
3 U
• Active current sharing for parallel operation
• Output voltage adjustment, inhibit, and sense lines
• Continuously no-load and short-circuit proof
• All boards are coated with a protective lacquer
60
2.4ꢀ
12 TE
168
6.6ꢀ
Safety-approved to the latest edition of IEC/EN 60950-1
and UL/CSA 60950-1
Table of Contents
Electromagnetic Compatibility (EMC).................................14
Mechanical Data.................................................................15
Immunity to Environmental Conditions...............................16
Safety and Installation Instructions.....................................19
Description of Options........................................................20
Accessories........................................................................21
Description............................................................................1
Model Selection....................................................................2
Functional Description..........................................................3
Electrical Input Data .............................................................4
Electrical Output Data...........................................................6
Auxiliary Functions .............................................................12
belfuse.com/power-solutions
BCD20029-G Rev AE, 31-Jan-2019