Industrial Environment
Switching Regulators, PCB & Chassis
PSR Series
PSR: Positive Switching Regulators
PSR-Series
No input to output isolation
Single output of 5, 12, 15, 24 or 36 V DC/15...72 W
Input voltage up to 80 V DC
• High efficiency up to 94%
• Wide input voltage range
• Low input to output differential voltage
• Very good dynamic properties
• Input undervoltage lock-out
• Parallel configurations possible
• Continuous no-load and short-circuit proof
• No derating
25
1.0"
50
2.0"
70
2.8"
Safety according to IEC/EN 60950
C
Summary
Modules with input voltages up to 80 V are specially de-
signed for secondary switched and battery driven applica-
tions. The case design allows operation at nominal load up
to 71°C without additional cooling.
The PSR 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.
Type Survey and Key Data
Table 1: Type survey
Output
voltage
Uo nom [V]
Output
current
Io nom [A]
Input
voltage range
Ui [V] 1
Input
voltage
Ui nom [V]
Efficiency 2
Type
designation
Options
ηmin [%]
ηtyp [%]
83
5
5
5
4
7...35
7...40
20
20
40
40
40
40
50
60
81
82
77
72
86
88
91
92
PSA 55-7
PSR 54-7
PSR 53-7
PSR 52-7
PSR 122.5-7
PSR 152.5-7
PSR 242-7
PSR 362-7
.
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
Y
83
5
3
8...80
79
5
2
8...80
74
12
15
24
36
2.5
2.5
2
15...80
19...80
29...80
42...80
87
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
89
92
2
94
1 See also: Electrical Input Data: DUio min
.
2 Efficiency at Ui nom and Io nom
Non standard input/output configurations or special custom adaptions are available on request.
See also: Commercial Information: Inquiry Form for Customized Power Supply.
Table of Contents
Page
Page
Summary.......................................................................... 1
Type Survey and Key Data.............................................. 1
Type Key .......................................................................... 2
Functional Description ..................................................... 2
Electrical Input Data ........................................................ 3
Electrical Output Data...................................................... 4
Auxiliary Functions .......................................................... 5
Electromagnetic Compatibility (EMC) ............................. 6
Immunity to Environmental Conditions ........................... 7
Mechanical Data .............................................................. 8
Safety and Installation Instructions ................................. 8
Description of Options ................................................... 10
Accessories ................................................................... 11
Edition 4/4.99
1/11
MELCHER
The Power Partners.
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