PSC, PSL Series Data Sheet
Positive Switching Regulators
32
1.3"
88
3.5"
151
5.9"
37
1.5"
8 TE
168
6.6"
107
4.2"
3U
Features
Description
The PSC and PSL Series positive switching regulators are
designed as power supplies for electronic systems, where no
input-to-output isolation is required. Their major advantages
include 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
converters are suitable for railway applications according to
EN 50155 and EN 50121.
Two type of housings are available allowing operation up to
71 °C. The PSC Series is designed for wall or chassis
mounting with faston connections, whereas the PSL Series is
designed for insertion into a 19" DIN-rack and exhibits a H11
connector.
Various options are available to adapt the converters to
different applications.
•
RoHS lead-free-solder and lead-solder-exempted
products are available
•
5 year warranty for RoHS compliant products
with an extended temperature range
•
Compliant to EN 45545 for (version V104 or later)
•
Input voltage up to 144 VDC
•
Single output of 3.3 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
•
Output voltage adjustment and inhibit function
•
Continuously no-load and short-circuit proof
•
All boards are coated with a protective lacquer
Safety-approved to the latest edition of IEC/EN 60950-1
and UL/CSA 60950-1
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) ................................. 13
Immunity to Environmental Conditions ............................... 14
Mechanical Data ................................................................. 15
Safety and Installation Instructions ..................................... 16
Description of Options ........................................................ 17
Accessories ......................................................................... 18
Description ............................................................................ 1
Model Selection .................................................................... 2
Functional Description .......................................................... 5
Electrical Input Data .............................................................. 6
Electrical Output Data ........................................................... 8
Auxiliary Functions .............................................................. 11
Copyright © 2018, Bel Power Solutions Inc. All rights reserved.
BCD20027-G Rev AC1, 12-Apr-2018
MELCHER
The Power Partners.
Page 1 of 19
PSC, PSL Series Data Sheet
Positive Switching Regulators
Model Selection
Table 1: PSC Series
Output
voltage
V
o nom
[V ]
5.1
5.1
5.1
12
12
12
15
15
15
24
24
24
36
36
48
1
2
3
4
5
6
Output
current
I
o nom
[A]
10
11
12
6
8
9
6
8
9
6
8
9
6
8
6
Operating input
voltage range
V
i
[V ]
8 – 80
8 – 40
7 – 40
18 – 144
1
15 – 80
15 – 40
22 – 144
1
19 – 80
19 – 40
31 – 144
1
29 – 80
29 – 60
44 – 144
1
42 – 80
58 –144
1
Nom. input
voltage
V
i nom
[V ]
40
20
20
60
40
30
60
40
30
60
40
40
80
60
80
Efficiency
2
η
min
[%]
77.5
78
83.5
88
91
89
89
90
91
93
93
94
95
95
96
η
typ
[% ]
79
79
85.5
89
93
90
91
92.5
93.5
94
95
96
96
96.5
97
Type
designation
PSC5A10-9iRG
PSC5A11-2
3
PSC5A12-9iRG
PSC126-9iRG
PSC128-9iRG
PSC129-2iR
4
PSC156-9iRG
PSC158-9iRG
PSC159-2iR
5
PSC246-9iRG
PSC248-9iRG
PSC249-2iR
6
PSC366-9iRG
PSC368-9iRG
PSC486-9iRG
Options
-7, L, C, D, non-G
--
-7, L, P, C, D, non-G
-7, L, C, D, non-G
-7, L, P, C, D, non-G
--
L, C, D
-7, L, P, C, D, non-G
--
-7, L, P, C, D, non-G
-7, L, P, C, D, non-G
--
-7, L, P, C, D, non-G
-7, L, P, C, D, non-G
-7, L, P, C, D, non-G
Surges up to 156 V for 2 s; see
Electrical Input Data
Efficiency at
V
i nom
and
I
o nom
.
Obsolete. Use PSCA12-9iRG !
Obsolete. Use PSC128-9LiRG !
Obsolete. Use PSC158-9LiRG !
Obsolete. Use PSC248-9LiRG !
Table 2: PSL Series
Output
voltage
V
o nom
[V ]
5.1
5.1
12
12
15
15
24
24
36
36
48
1
2
Output
current
I
o nom
[A]
10
12
6
8
6
8
6
8
6
8
6
Operating input
voltage range
V
i
[V ]
8 – 80
7 – 40
18 – 144
1
15 – 80
22 – 144
1
19 – 80
31 – 144
1
29 – 80
44 – 144
1
42 – 80
58 –144
1
Nom. input
voltage
V
i nom
[V ]
40
20
60
40
60
40
60
40
80
60
80
Efficiency
2
η
min
[%]
77.5
83.5
88
89
89
90
93
93
95
95
96
η
typ
[% ]
79
85.5
89
90
91
92.5
94
95
96
96.5
97
Type
designation
PSL5A10-9RG
PSL5A12-9RG
PSL126-9RG
PSL128-9RG
PSL156-9RG
PSL158-9RG
PSL246-9RG
PSL248-9RG
PSL366-9RG
PSL368-9RG
PSL486-9RG
Options
-7, L, i, C, non-G
-7, L, C, non-G
-7, L, C, non-G
L, C
L, C
-7, L, i, C, non-G
-7, L, C, non-G
-7, L, C, K, non-G
-7, L, C, non-G
-7, L, C, non-G
-7, L, non-G
Surges up to 156 V for 2 s
Efficiency at
V
i nom
and
I
o nom
.
NFND: Not for new designs
Preferred for new designs
BCD20027-G Rev
AC1, 12-Apr-2018
MELCHER
The Power Partners.
Page 2 of 19
PSC, PSL Series Data Sheet
Positive Switching Regulators
Part Number Description
PSC Series
Positive switching regulator in case C03 .................... PSC
Nominal output voltage in volt .............................. 3.3 to 48
Nominal output current in ampere .......................... 6 to 12
Operational ambient temperature range
T
A
–10 to 50 °C ........................................................ -2
–25 to 71 °C (option) ........................................... -7
–40 to 71 °C ........................................................ -9
Input filter (option) ............................................................ L
Inhibit input ...................................................................... i
Control input for output voltage adjustment
1
.................. R
Potentiometer
1
(option) ................................................... P
Thyristor crowbar (option) ............................................... C
Input/output voltage monitor (option) .............................. D
RoHS-compliant for all 6 substances ............................. G
1
PSC 12 6 -7 L i R P C D G
Feature R excludes option P and vice versa.
Example:
PSC126-7LiPCG designates a positive switching regulator with a 12 V, 6 A output, ambient temperature range of
–25 to 71 °C, input filter, inhibit input, output adjust potentiometer, thyristor crowbar, RoHS-compliant
PSL 12 6 -7 L R C K G
PSL Series
Positive switching regulator in case L04 ..................... PSL
Nominal output voltage in volt .............................. 5.1 to 48
Nominal output current in ampere .......................... 6 to 12
Operational ambient temperature range
T
A
–10 to 50 °C ........................................................ -2
–25 to 71 °C (option) ........................................... -7
–40 to 71 °C ........................................................ -9
Input filter (option) ............................................................ L
Inhibit input
1
..................................................................... i
Control input for output voltage adjustment
1
.................. R
Thyristor crowbar (option) ............................................... C
Coding strip (option) ........................................................ K
RoHS-compliant for all 6 substances ............................. G
1
Feature R excludes option i and vice versa.
Example:
PSL126-9LRCG designates a positive switching regulator with a 12 V, 6 A output, ambient temperature range of
–40 to 71 °C, input filter, output voltage adjust, and thyristor crowbar, RoHS-compliant.
NFND: Not for new designs.
Preferred for new designs
BCD20027-G Rev
AC1, 12-Apr-2018
MELCHER
The Power Partners.
Page 3 of 19
PSC, PSL Series Data Sheet
Positive Switching Regulators
Customer-Specific Models
Positive switching regulator in case C03 .................... PSC
Positive switching regulator in case L04 ..................... PSL
Nominal output voltage in Volt (without decimals) ......... 12
Decimal places:
0.0 V ..................................................................... Z
0.1 V ..................................................................... A
0.15 V ................................................................... B
0.2 V .................................................................... C
0.25 V .................................................................. D
0.3 V ..................................................................... E
0.4 V ..................................................................... F
0.5 V .................................................................... G
0.6 V .................................................................... H
0.7 V ..................................................................... J
0.8 V ..................................................................... K
0.9 V ..................................................................... L
other ..................................................................... Y
Output current in Ampère ................................................ 3
Identification character ............................................ A, B, ..
Temperature range and options .............................. -9 i RG
PSC 12 Z 3 A -9 i RG
Produkt Marking
Type designation, applicable safety approval marks, warnings,
pin allocation, Power-One patent nos., and company logo.
Identification of LED and optional potentiometers. Label with
input voltage range, nominal output voltage and current,
protection degree, batch no., serial no., and data code
including production site, version (modification status), and
date of production.
BCD20027-G Rev
AC1, 12-Apr-2018
MELCHER
The Power Partners.
Page 4 of 19
PSC, PSL Series Data Sheet
Positive Switching Regulators
Functional Description
The switching regulators are designed using the buck
converter topology. The input is not electrically isolated from
the output. During the on period of the switching transistor,
current is transferred to the output, and energy is stored in the
output choke. During the off period, this energy forces the
current to continue flowing through the output, to the load, and
back through the freewheeling diode. Regulation is ac-
complished by varying the duty cycle (on to off ratio) of the
power switch.The regulator is equipped with a undervoltage
lockout, but no overvoltage shutdown.
These regulators are ideal for a wide range of applications,
where input to output isolation is not necessary, or where
already provided by an external front end (e.g., a transformer
with rectifier). To optimize customer’s needs, additional options
and accessories are available.
03018b
I
i
Vi+
Fuse
(option C)
Input Filter
Option L
Vo+
D
i
C
i
Control circuit
Option C
I
o
V
i
V
o
R
G
Gi–
V
t
Option D
V
o
Option P
Go–
Fig. 1
Block diagram PSC
03021b
14
29
I
o
Vo+
Input Filter Option L
I
i
Vi+
17
5
26
Fuse
(Option
C)
(D)
V
i
C
i
Control circuit
Option
C
2
8
V
o
20
R (or i)
Go–
Gi–
23
32
11
Fig. 2
Block diagram PSL
BCD20027-G Rev
AC1, 12-Apr-2018
MELCHER
The Power Partners.
Page 5 of 19
