PSC, PSL Series Data Sheet
Positive Switching Regulators
32
1.3"
88
3.5"
151
5.9"
168
6.6"
107
4.2"
3U
37
1.5"
8 TE
Features
•
RoHS lead-free-solder and lead-solder-exempted
products are available
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.
•
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-compliant to IEC/EN 60950 -1 and UL/CSA
60950-1 2
nd
Ed.
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
Page 1 of 19
Description ............................................................................ 1
Model Selection .................................................................... 2
Functional Description .......................................................... 5
Electrical Input Data .............................................................. 6
Electrical Output Data ........................................................... 8
Auxiliary Functions .............................................................. 11
BCD20027-G Rev AB, 3-Nov-2014
MELCHER
The Power Partners.
PSC, PSL Series Data Sheet
Positive Switching Regulators
Model Selection
Table 1: PSC Series
Output
voltage
V
o nom
[V ]
3.3
5.1
5.1
5.1
12
12
12
15
15
15
24
24
24
36
36
48
1
2
Output
current
I
o nom
[A]
12
10
11
12
6
8
9
6
8
9
6
8
9
6
8
6
Operating input
voltage range
V
i
[V ]
7– 40
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 ]
20
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
88
89
89
90
91
93
93
94
95
95
96
η
typ
[% ]
77
79
79
85.5
89
90
90
91
92.5
93.5
94
95
96
96
96.5
97
Type
designation
PSC3E12-2
PSC5A10-9iR
PSC5A11-2
PSC5A12-9iR
PSC126-9iR
PSC128-9iR
PSC129-2
PSC156-9iR
PSC158-9iR
PSC159-2
PSC246-9iR
PSC248-9iR
PSC249-2
PSC366-9iR
PSC368-9iR
PSC486-9iR
Options
i, R, G
-7, L, P, C, D, D1, G
i, R, G
-7, L, P, C, D, D1, G
-7, L, P, C, D, D1, G
-7, L, P, C, D, D1, G
i, R, G
-7, L, P, C, D, D1, G
-7, L, P, C, D, D1, G
i, R, G
-7, L, P, C, D, D1, G
-7, L, P, C, D, D1, G
i, R, G
-7, L, P, C, D, D1, G
-7, L, P, C, D, D1, G
-7, L, P, D, D1, G
Surges up to 156 V for 2 s; see
Electrical Input Data
Efficiency at
V
i nom
and
I
o nom
.
Table 2: PSL 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
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
89
89
89
90
91
93
93
94
95
95
96
η
typ
[% ]
79
79
85.5
89
90
90
91
92.5
93.5
94
95
96
96
96.5
97
Type
designation
PSL5A10-9R
PSL5A11-2R
PSL5A12-9R
PSL126-9R
PSL128-9R
PSL129-2R
PSL156-9R
PSL158-9R
PSL159-2R
PSL246-9R
PSL248-9R
PSL249-2R
PSL366-9R
PSL368-9R
PSL486-9R
Options
-7, L, i, P, C, D, D1, K, G
-
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, C, D, D1, K, G
-
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, C, D, D1, K, G
-
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, C, D, D1, K, G
-
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, C, D, D1, K, G
-7, L, i, P, D, D1, K, 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 AB, 3-Nov-2014
MELCHER
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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 ........................................................ -7
–40 to 71 °C (option) ........................................... -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, D1
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:
PSC126-7LiPC 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, and thyristor crowbar.
PSL 12 6 -7 L i R P C D 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 ........................................................ -7
–40 to 71 °C (option) ........................................... -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, D1
Coding strip (option) ........................................................ K
RoHS-compliant for all 6 substances ............................. G
1
Feature R excludes options i and P and vice versa.
Example:
PSL126-9LiPC designates a positive switching regulator with a 12 V, 6 A output, ambient temperature range of
–40 to 71 °C, input filter, inhibit input, output adjust potentiometer, and thyristor crowbar.
NFND: Not for new designs.
Preferred for new designs
BCD20027-G Rev AB, 3-Nov-2014
MELCHER
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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 AB, 3-Nov-2014
MELCHER
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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.
03018a
I
i
Vi+
Fuse
(option C)
Vo+
I
o
Input Filter
Option L
D
i
Control circuit
Option C
V
i
V
o
R
G
Gi–
V
t
Option D
V
o
Option P
Go–
Fig. 1
Block diagram PSC
03021a
14
29
I
o
Vo+
Input Filter Option L
I
i
Vi+
17
5
26
Fuse
(Option
C)
D
V
i
Control circuit
Option
C
2
V
o
20
R (or i)
Go–
Gi–
23
32
V
t
Option D
8
V
o
11
Option P
Fig. 2
Block diagram PSL
BCD20027-G Rev AB, 3-Nov-2014
MELCHER
The Power Partners.
Page 5 of 19
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