Industrial Environment
Switching Regulators, PCB & Chassis
PSC-Family
PSR: Positive Switching Regulators
PSC-Family
No input to output isolation
Single output of 5.1, 12, 15, 24 or 36 V DC/51...288 W
Input voltage up to 80 V DC
• High efficiency up to 96%
• Wide input voltage range
• Low input-to-output differential voltage
• Very good dynamic properties
• Input undervoltage cut-out
• External output voltage adjustment and inhibit
• Continuous no-load and short-circuit proof
• No derating
Safety according to IEC 950
C
Table of Contents
Page
Electrical Input and Output Data ............................... 4 - 58
Characteristics and Definitions.................................. 4 - 60
Description of Options............................................... 4 - 61
Mechanical Data ....................................................... 4 - 63
Type Key and Product Marking ................................. 4 - 63
Type Survey .............................................................. 4 - 53
Description ................................................................4 - 53
Safety and Installation Instructions ........................... 4 - 54
Standard Features .................................................... 4 - 55
Immunity to Environmental Conditions...................... 4 - 56
Electromagnetic Compatibility EMC.......................... 4 - 57
Type Survey
Table 1: Type survey
Nominal
output
voltage
Uo nom
Nominal
output
current
Io nom
Input
voltage
range
Nominal
input
voltage
Ui nom
Efficiency
Type
designation
Options
Superseded
old type
(phase-out)
1
Ui
η
5.1 V
5.1 V
12 V
15 V
24 V
36 V
12 A
10 A
8 A
7...40 V
8...80 V
20 V
40 V
83%
79%
90%
91%
94%
96%
PSC 5A12-7iR
PSC 5A10-7iR
PSC 128-7iR
PSC 158-7iR
PSC 248-7iR
PSC 368-7iR
-9, L, P, C, D
PSR 512-7
PSR 510-7
PSR 128-7
PSR 158-7
PSR 248-7
PSR 368-7
15...80 V
19...80 V
29...80 V
42...80 V
50 V
60 V
1See data ∆Uio min (min. differential voltage Ui – Uo)
Description
The PSC family of positive swiching regulators is designed
as power supply modules for electronic systems. Their ma-
jor advantages include a high level of efficiency that re-
mains virtually constant over the entire input range, high
reliability, low ripple and excellent dynamic response.
Modules with input up to 80 V are specially designed for
secondary switched and battery driven applications.
Case C03: Aluminium, black finish and self cooling.
External input circuitry
An external capacitor (see "Application Notes") is required
in rectifier mode and in DC operation mode only, if the sum
of the lengths of the two input lines between source and in-
put (without option L) is greater than approx. 5 m. For long
connection lines the use of option L is recommended in or-
der to reduce superimposed interference voltages or cur-
rents and to prevent oscillation.
Edition 2/96 - © Melcher AG
4 - 53
MELCHER
The Power Partners.