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 144 V are specially designed for secondary switched and
battery-driven mobile applications. The con verters 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
111
4.4" output current.
3 U
80 Features
168
3.2"
6.6"
16 TE 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
4.4"
Active current sharing for parallel operation
3 U
Output voltage adjustment, inhibit, and sense lines
Continuously no-load and short-circuit proof
60
168
2.4"
All boards are coated with a protective lacquer
6.6"
12 TE
Safety-approved to the latest edition of IEC/EN 60950-1
and UL/CSA 60950-1
Table of Contents
Description............................................................................1 Electromagnetic Compatibility (EMC) .................................14
Model Selection ....................................................................2 Mechanical Data .................................................................15
Immunity to Environmental Conditions ...............................16
Functional Description ..........................................................3
Electrical Input Data .............................................................4 Safety and Installation Instructions .....................................19
Electrical Output Data...........................................................6 Description of Options ........................................................20
Auxiliary Functions .............................................................12 Accessories ........................................................................21
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BCD20029-G Rev AE, 31-Jan-2019PSK / PSS Series
Positive Switching Regulators
Model Selection
Table 1: Model Selection
2
Output Output Operating input Nom. input Efficiency Type Connector Options
4
voltage current voltage range voltage designation type
V [V] I [A] V [V] V [V] [%] [%]
o nom o nom i o nom min max
5.1 20 8 - 80 40 78 79 PSK5A20-9ECKG H15 B, B1
1
12 9 18 - 144 60 90 91 PSS129-9G H15 -7, E, B, B1
12 12 15 - 80 40 90 91 PSS1212-9G H15 B, B1
1
12 12 18 - 144 60 90 91 PSK1212-9G H15 -7, E, C, B, B1
12 16 15 - 80 40 89 90 PSK1216-9G H15 -7, E, C, B, B1
12 20 15 - 80 40 89 90 PSK1220-9G H15S4 -7, E, C, K, B, B1
3 1
15 9 22 - 144 60 90 92 PSS129-9G H15 E, B, B1
3
15 12 19 - 80 40 90 92 PSS1212-9G H15 -7, E, B, B1
3 1
15 12 22 - 144 60 90 92 PSK1212-9G H15 -7, E, C, B, B1
3
15 16 19 - 80 40 89 90 PSK1216-9G H15 -7, E, C, B, B1
3
15 20 19 - 80 40 89 90 PSK1220-9G H15S4 -7, E, C, K, B, B1
1
24 9 31 - 144 60 93 94 PSS249-9G H15 -7, E, C, B, B1
24 12 29 - 80 50 93.5 94 PSS2412-9G H15 -7, E, B, B1
1
24 12 31 - 144 60 93.5 94 PSK2412-9G H15 -7, E, C, B, B1
24 14 29 - 60 40 94.5 PSS2414-2 H15 B, B1
24 16 29 - 80 50 93.5 94 PSK2416-9G H15 -7, E, C, B, B1
24 20 29 - 80 50 93.5 95 PSK2420-9G H15S4 -7, E, C, K, B, B1
1
36 9 44 - 144 80 95 96 PSS369-9G H15 -7, E, B, B1
36 12 42 - 80 60 95 94 PSS3612-9G H15 B, B1
1
36 12 44 - 144 80 95 96 PSK3612-9G H15 -7, E, C, B, B1
36 16 42 - 80 60 94.5 95 PSK3616-9G H15 -7, E, C, B, B1
36 20 42 - 80 60 94.5 95 PSK3620-9G H15S4 -7, E, C, K, B, B1
1
48 12 58 - 144 80 96 97 PSK4812-9G H15 -7, E, C, B, B1
1
Surges up to 156 V for 2 s; see Electrical Input Data
2
Efficiency at V and I . Models with opt. K (standard H15 connector) exhibit approx. 1 to 2% lower efficiency.
i nom o nom
3
Output voltage V set to 15 V by R input.
o
4
Part numbers without suffix G use the leaded solder exemption.
Note: Non-standard input/output configurations or special custom adaptations are available on request.
NFND: Not for new designs. Preferred for new designs.
Part Number Description
PSK 12 12 -9 E C B G
Positive switching regulator in case S01, K01 ........PSS, PSK
Nominal output voltage in Volt .................................... 5.1 48
Nominal output current in Ampere ................................. 9 25
Operational ambient temperature range T
A
10 to 50 C ......................................................-2
25 to 71 C ......................................................-7
40 to 71 C (optional) ......................................-9
Options: Inrush current limitation .......................................E
Thyristor crowbar ................................................ C
Standard H15 connector .....................................K
Cooling plate large/small .............................. B, B1
2
RoHS-compliant for all 6 substances ............... G
1
Option P excludes R-features and vice versa.
2
G is always placed at the end of the part number.
Example: PSS129-9ECB = Positive switching regulator with output 12 V, 9 A, ambient temperature range of 25 to 71 C, inrush
current limitation, crowbar, and large cooling plate option B.
Note: The sequence of options must follow the order above.
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