PSC, PSL Series Datasheet by Bel Power Solutions

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PSC/PSL Series
Positive Switching Regulators
Features
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 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
Description............................................................................1
Model Selection ....................................................................2
Functional Description ..........................................................5
Electrical Input Data .............................................................6
Electrical Output Data...........................................................8
Auxiliary Functions .............................................................12
Electromagnetic Compatibility (EMC) ................................. 13
Immunity to Environmental Conditions ...............................15
Mechanical Data ................................................................. 16
Safety and Installation Instructions ..................................... 17
Description of Options ........................................................19
Accessories ........................................................................21
151
5.9"
88
3.5"
32
1.3"
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.
168
6.6"
37
1.5"
8 TE
107
4.2"
3 U
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PSC/PSL Series
Positive Switching Regulators
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Model Selection
Table 1: PSC Series
Output
voltage
Output
current
Operating input
voltage range
Nom. input voltage Efficiency 2 Type
designation
Options
Vo nom [V] Io nom [A] Vi [V] Vo nom [V] ηmin [%] ηtyp [%]
5.1
5.1
5.1
10
11
12
8 - 80
8 - 40
7 - 40
40
20
20
77.5
78
83.5
79
79
85.5
PSC5A10-9iRG
PSC5A11-2 ³
PSC5A12-9iRG
-7, L, C, D, non-G
---
-7, L, P, C, D, non-G
12
12
12
6
8
9
18 - 144 1
15 - 80
15 - 40
60
40
30
88
91
89
89
93
90
PSC126-9iRG
PSC128-9iRG
PSC129-2iR ⁴
-7, L, C, D, non-G
-7, L, P, C, D, non-G
---
15
15
15
6
8
9
22 - 144 1
19 - 80
19 - 40
60
40
30
89
90
91
91
92.5
93.5
PSC156-9iRG
PSC158-9iRG
PSC159-2iR ⁵
L, C, D,
-7, L, P, C, D, non-G
---
24
24
24
6
8
9
31 - 144 1
29 - 80
29 - 60
60
40
40
93
93
94
94
95
96
PSC246-9iRG
PSC248-9iRG
PSC249-2iR ⁶
-7, L, P, C, D, non-G
-7, L, P, C, D, non-G
---
36
36
6
8
44 - 144 1
42 - 80
80
60
95
95
96
96.6
PSC366-9iRG
PSC368-9iRG
-7, L, P, C, D, non-G
-7, L, P, C, D, non-G
48 6 58 - 144 1 80 96 97 PSC486-9iRG -7, L, P, C, D, non-G
1 Surges up to 156 V for 2 s; see Electrical Input Data
2 Efficiency at Vi nom and Io nom.
3 Obsolete. Use PSCA12-9iRG !
4 Obsolete. Use PSC128-9LiRG !
5 Obsolete. Use PSC158-9LiRG !
6 Obsolete. Use PSC248-9LiRG !
Table 2: PSL Series
Output
voltage
Output
current
Operating input
voltage range
Nom. input voltage Efficiency 2 Type
designation
Options
Vo nom [V] Io nom [A] Vi [V] Vo nom [V] ηmin [%] ηmax [%]
5.1
5.1
10
12
8 - 80
7 - 40
40
20
77.5
83.5
79
85.5
PSL5A10-9RG
PSL5A12-9RG
-7, L, i, C, non-G
-7, L, C, non-G
12
12
6
8
18 - 144 1
15 - 80
60
40
88
89
89
90
PSL126-9RG
PSL128-9RG
-7, L, C, non-G
L, C
15
15
6
8
22 - 144 1
19 - 80
60
40
89
90
91
92.5
PSL156-9RG
PSL158-9RG
L, C
-7, L, i, C, non-G
24
24
6
8
31 - 144 1
29 - 80
60
40
93
93
94
95
PSL246-9RG
PSL248-9RG
-7, L, C, non-G
-7, L, C,K, non-G
36
36
6
8
44 - 144 1
42 - 80
80
60
95
95
96
96.6
PSL366-9RG
PSL368-9RG
-7, L, C, non-G
-7, L, C, non-G
48 6 58 - 144 1 80 96 97 PSL486-9RG -7, L, non-G
1 Surges up to 156 V for 2 s; see Electrical Input Data
2 Efficiency at Vi nom and Io nom
NFND: Not for new designs. Preferred for new designs.
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PSC/PSL Series
Positive Switching Regulators
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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 TA
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
PSC 12 6 -7 L i R P C D G
1 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 Series
Positive switching regulator in case C03 ..................... PSC
Nominal output voltage in volt .............................. 5.1 to 48
Nominal output current in ampere ........................... 6 to 12
Operational ambient temperature range TA
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
PSL 12 6 -7 L R C K 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.
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PSC/PSL Series
Positive Switching Regulators
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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 Amperes ................................................3
Identification character ...........................................A, B, ...
Temperature range and options ............................... -9 i RG
PSC 12 Z 3 A -9iRG
Product Marking
Type designation, applicable safety approval marks, warnings, pin allocation, 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.
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PSC/PSL Series
Positive Switching Regulators
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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.
Control circuit
Option P
Go–
Vo+
Gi–
Vi+
Input Filter
Option L
G
R
i
D
I
o
V
o
I
i
V
i
Option C
Fuse
(option C)
03018b
Option D
V
t
V
o
C
i
Fig. 1
Block diagram PSC
Control circuit
Go–
Vo+
Gi–
Vi+
Input Filter Option L
R (or i)
(D)
I
o
V
o
I
i
V
i
Option
C
Fuse
(Option
C)
03021b
29
26
20
23
32
14
17
5
2
8
11
C
i
Fig. 2
Block diagram PSL
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PSC/PSL Series
Positive Switching Regulators
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Electrical Input Data
General Conditions: TA = 25 °C, unless TC is specified
Table 3a: Input data
Model PSC5A11-2 PSC129-2 PSC159-2 PSC249-2 Unit
Characteristics Conditions min typ max min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom,
TC min TC max
840 15 40 19 40 29 60
VVio min Min. diff. voltage Vi Vo2.9 3 4 5
Vi UVL Undervoltage lockout 7.3 7.3 7.3 12
Ii 0 No-load input current Io = 0, Vi min Vi max 50 50 50 50 mA
Iinr p Inrush peak current Vi nom
150 150 250 250 A
tinr r Inrush current rise time Vi nom 5 5 5 5 µs
Vi RFI EN 55011, 0.15 - 30 MHz Vi nom, Io nom A A A A Class
Table 3b: Input data
Model PSC5A12 / PSL5A12 PSC5A10 / PSL5A10 PSC128 / PSL128 Unit
Characteristics Conditions min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom,
TC min TC max
740 8 80 15 80
VVio min Min. diff. voltage Vi Vo1.9 2.9 3
Vi UVL Undervoltage lockout 6.3 7.3 7.3
Ii 0 No-load input current Io = 0, Vi min Vi max 45 40 35 mA
Iinr p Inrush peak current Vi nom
without opt. L 150 250 250 A
with opt. L 250 350 350
tinr r Inrush current rise time Vi nom
without opt. L 5 5 5 µs
with opt. L 25 25 25
Vi RFI EN 55011, 0.15 - 30 MHz Vi nom, Io nom B 1 B 1 B 1 Class
Table 3c: Input data
Model PSC158 / PSL158 PSC248 / PSL248 PSC368 / PSL368 Unit
Characteristics Conditions min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom,
TC min TC max
19 80 29 80 42 80
VVio min Min. diff. voltage Vi Vo456
Vi UVL Undervoltage lockout 7.3 12 19
Ii 0 No-load input current Io = 0, Vi min Vi max 35 35 40 mA
Iinr p Inrush peak current Vi nom
without opt. L 250 250 250 A
with opt. L 350 350 350
tinr r Inrush current rise time Vi nom
without opt. L 5 5 5 µs
with opt. L 25 25 25
Vi RFI EN 55011, 0.15 - 30 MHz Vi nom, Io nom B 1 B 1 B 1 Class
1 With option L and an additional external input cap Cext = 120 µF/100 V, e.g., Nichicon or similar
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PSC/PSL Series
Positive Switching Regulators
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Table 3d: Input data
Model PSC126 / PSL126 PSC156 / PSL156 PSC246 / PSL246 Unit
Characteristics Conditions min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom,
TC min TC max
18 144 2 22 144 2 31 144 2
VVio min Min. diff. voltage Vi Vo67 7
Vi UVL Undervoltage lockout 12 15 19
Ii 0 No-load input current Io = 0, Vi min Vi max 35 35 35 mA
Iinr p Inrush peak current Vi nom
without opt. L 250 250 250 A
with opt. L 350 350 350
tinr r Inrush current rise time Vi nom
without opt. L 5 5 5 µs
with opt. L 25 25 25
Vi RFI EN 55011, 0.15 - 30 MHz Vi nom, Io nom B 1 B 1 B 1 Class
Table 3e: Input data
Model PSC366 / PSL366 PSC486 / PSL486 Unit
Characteristics Conditions min typ max min typ max
ViOperating input voltage Io = 0 – Io nom,
TC min TC max
44 144 2 58 144 2
VVio min Min. diff. voltage Vi Vo8 10
Vi UVL Undervoltage lockout 29 40
Ii 0 No-load input current Io = 0, Vi min Vi max 40 45 mA
Iinr p Inrush peak current Vi nom
without opt. L 250 250 A
with opt. L 350 350
tinr r Inrush current rise time Vi nom
without opt. L 5 5 µs
with opt. L 25 25
Vi RFI EN 55011, 0.15 - 30 MHz Vi nom, Io nom B 1 B 1 Class
1 With option L and an additional external input cap Cext = 120 µF/100 V, e.g., Nichicon or similar
2 Surges up to 156 V for 2 s
External Input Circuitry
The sum of the lengths of the supply lines to the source or to the nearest capacitor 100 µF (a + b) should not exceed 5 m, unless
option L is fitted. This option is recommended in order to prevent power line oscillations and reduce superimposed interference
voltages.
Vi+
Gi–
Vo+
Go–
a
b
+
04016a
Fig. 3
Switching regulator with long supply lines.
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PSC/PSL Series
Positive Switching Regulators
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Electrical Out put Data
General conditions:
TA = 25 °C, unless TC is specified
– R-input open (or Vo set to Vo nom with option P)
Table 4a: Output data
Output PSC5A11 PSC129 PSC159 PSC249 Unit
Characteristics Conditions min typ max min typ max min typ max min typ max
VoOutput voltage Vi nom, Io nom 5.05 5.15 11.6 12.4 14.5 15.5 23.3 24.7 V
IoOutput current Vi minVi max
TC minTC max
011.0 09.0 09.0 09.0 A
IoL Output current limitation 11.0 14.3 9.0 11.7 9.0 11.7 9.0 11.7
Vo
Output
voltage
noise
Switching
frequency
Vi nom, Io nom
IEC/EN 61204
BW = 20 MHz
55 150 200 300
mVpp
Total 60 160 210 210
Vo V Static line regulation Vi minVi max, Io nom 100 240 300 480
mV
Vo l Static load regulation Vi nom, Io = 0 Io nom 100 120 150 240
Vo d Dynamic
load
regulation
Voltage
deviation
Vi nom
Io nom 1/3
Io nom
IEC/EN 61204
130 360 450 700
t d Recovery time 50 60 60 80 µs
αVo
Temperature coefficient
Vo/∆TC (TC minTC max)
Vi minVi max
Io = 0 Io nom
±0.02 ±0.02 ±0.02 ±0.02 %/K
Table 4b: Output data
Output PSC5A12 / PSL5A12 PSC5A10 / PSL5A10 PSC128 / PSL128 Unit
Characteristics Conditions min typ max min typ max min typ max
VoOutput voltage Vi nom, Io nom 5.07 5.13 5.07 5.13 11.93 12.07 V
IoOutput current Vi minVi max
TC minTC max
012.0 011.0 09.0 A
IoL Output current limitation 12.0 15.6 11.0 14.3 9.0 11.7
Vo
Output
voltage
noise
Switching
frequency
Vi nom, Io nom
IEC/EN 61204
BW = 20 MHz
55 55 150
mVpp
Total 60 60 160
Vo V Static line regulation Vi minVi max, Io nom 100 100 240
mV
Vo l Static load regulation Vi nom, Io = 0 Io nom 100 100 120
Vo d Dynamic
load
regulation
Voltage
deviation
Vi nom
Io nom 1/3
Io nom
IEC/EN 61204
150 130 360
t d Recovery time 50 50 60 µs
αVo
Temperature coefficient
Vo/∆TC (TC minTC max)
Vi minVi max
Io = 0 Io nom
±0.02 ±0.02 ±0.02 %/K
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Table 4c: Output data. General conditions as per table 4a
Output PSC158 / PSL158 PSC248 / PSL248 PSC368 / PSL368 Unit
Characteristics Conditions min typ max min typ max min typ max
VoOutput voltage Vi nom, Io nom 14.91 15.09 23.68 24.14 35.78 36.22 V
IoOutput current Vi minVi max
TC minTC max
08.0 08.0 08.0 A
IoL Output current limitation 8.0 10.4 8.0 10.4 8.0 10.4
Vo
Output
voltage
noise
Switching
frequency
Vi nom, Io nom
IEC/EN 61204
BW = 20 MHz
50 90 55 150 80 190
mVpp
Total 54 94 60 155 85 195
Vo V Static line regulation Vi minVi max, Io nom 70 100 150 220 200 270
mV
Vo l Static load regulation Vi nom, Io = 0 Io nom 30 45 120 160 125 160
Vo d Dynamic
load
regulation
Voltage
deviation
Vi nom
Io nom 1/3
Io nom
IEC/EN 61204
130 150 220
t d Recovery time 60 80 100 µs
αVo
Temperature coefficient
Vo/∆TC (TC minTC max)
Vi minVi max
Io = 0 Io nom
±0.02 ±0.02 ±0.02 %/K
Table 4d: Output data. General conditions as per table 4a
Output PSC126 / PSL126 PSC156 / PSL156 PSC246 / PSL246 Unit
Characteristics Conditions min typ max min typ max min typ max
VoOutput voltage Vi nom, Io nom 11.93 12.07 14.91 15.09 23.86 24.14 V
Io Output current Vi minVi max
TC minTC max
06.0 06.0 06.0 A
IoL Output current limitation 6.0 7.8 6.0 7.8 6.0 7.8
Vo
Output
voltage
noise
Switching
frequency
Vi nom, Io nom
IEC/EN 61204
BW = 20 MHz
30 45 50 70 50 70
mVpp
Total 34 49 54 74 54 75
Vo V Static line regulation Vi minVi max, Io nom 25 40 25 40 80 100
mV
Vo l Static load regulation Vi nom, Io = 0 Io nom 60 60 80
Vo d Dynamic
load
regulation
Voltage
deviation
Vi nom
Io nom 1/3
Io nom
IEC/EN 61204
150 130 360
t d Recovery time 50 50 60 µs
αVo
Temperature coefficient
Vo/∆TC (TC minTC max)
Vi minVi max
Io = 0 Io nom
±0.02 ±0.02 ±0.02 %/K
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PSC/PSL Series
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Table 4e: Output data. General conditions as per table 4a
Output PSC366 / PSL366 PSC486 / PSL486 Unit
Characteristics Conditions min typ max min typ max
VoOutput voltage Vi nom, Io nom 35.78 36.22 47.71 48.29 V
Io nom Output current Vi minVi max
TC minTC max
06.0 06.0 A
IoL Output current limitation 6.0 7.8 6.0 7.8
Vo
Output
voltage
noise
Switching
frequency
Vi nom, Io nom
IEC/EN 61204
BW = 20 MHz
50 90 55 110
mVpp
Total 54 94 95 115
Vo V Static line regulation Vi minVi max, Io nom 200 300 100 200
mV
Vo l Static load regulation Vi nom, Io = 0 Io nom 120 200 180 250
Vo d Dynamic
load
regulation
Voltage
deviation
Vi nom
Io nom 1/3
Io nom
IEC/EN 61204
140 150
t d Recovery time 100 100 µs
αVo
Temperature coefficient
Vo/∆TC (TC minTC max)
Vi minVi max
Io = 0 Io nom
±0.02 ±0.02 %/K
v
od
v
od
t
d
t
d
V
o
±1% V
o
±1%
t
t
10 µs 10 µs
V
o
0
0.3
1
I
o
/I
o nom
05010a
Fig. 4
Switching regulator with long supply lines.
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PSC/PSL Series
Positive Switching Regulators
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Thermal Considerations
When a switching regulator is located in free, quasi-stationary air (convection cooling) at a temperature TA = 71 °C and is operated
at Io nom, the case temperature TC will be about 95 °C after the warm-up phase, measured at the measuring point of case temperature
TC; see Mechanical Data.
Under practical operating conditions, the ambient temperature TA may exceed 71 °C, provided that additional measures (heat sink,
fan, etc.) are taken to ensure that the case temperature TC does not exceed its maximum value of 95 °C.
Example: Sufficient forced cooling allows TA max = 85 °C. A simple check of the case temperature TC (TC 95 °C) at full load ensures
correct operation of the system.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
40 60 70 80 [°C]
Io/Io nom
TA
0.9
1.0 05032a
TC max
50
Convection cooling
TA min
Forced
cooling
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
50 60 70 80 90 °C
I
o
/I
o nom
T
A
1.0
forced
cooling
T
A min
T
C max
convection cooling
0.9
05031a
Fig. 5a
Output current derating vs. temperature (models -2)
Fig. 5b
Output current derating vs. temperature (models -7 and - 9)
Output Protection and Short Circuit Behaviour
A voltage suppressor diode, which in worst case conditions fails into a short circuit (or a thyristor crowbar, option C), protects the
output against an internally generated over-voltage. Such an overvoltage could occur due to a failure of either the control circuit or
the switching transistor. The output protection is not designed to withstand externally applied overvoltages.
A constant current limitation circuit holds the output current almost constant, when an overload or a short circuit is applied to the
output. It acts self-protecting and recovers auto matically after removal of the overload or short circuit condition.
1.0
0.8
0.6
0.4
00.2 0.4 1.0 1.2
0.2
0.6 0.8
V
o
/V
o nom
I
o
/I
o nom
I
o L
05033a
I
o nom
Fig. 6
Overload, short-circuit behaviour Vo versus Io.
Parallel and Series Connection
Outputs of equal nominal voltages can be parallel-connected. However, the use of a single regulator with higher output power, is
always the better solution.
In parallel-connected operation, one or several outputs may operate continuously at their current limit knee-point which will cause
an increase of the heat generation. Consequently, the max. ambient temperature should be reduced by 10 °C.
Outputs can be series-connected with any other regulator. In series-connection the maximum output current is limited by the lowest
current limitation, but electrically separated sourc e voltages are needed for each regulator.
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PSC/PSL Series
Positive Switching Regulators
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Auxiliary Functions
i Inhibit (Remote On / Off)
The inhibit input allows the switching regulator output to be disabled via a control signal. In systems with several converters, this
feature can be used, for example, to control the activation sequence of the converters by a logic signal (TTL, C-MOS, etc.). An
output voltage overshoot will not occur, when switching on or off.
Note: With open i-input, the output is enabled.
4
2
0
040204 0
–20 V
5
3
1
I
inh
[mA]
V
inh
Output on Output off
V
inh
= 0.8 V
V
inh
= 2.4 V
06034a
0t
t
0
Inhibit
1
0.1
1
V
o
/V
o nom
t
r
t
f
06001
Fig. 7
Typical inhibit current Iinh versus inhibit voltage Vinh
Fig. 8
Output response as a function of inhibit signal
Table 4: Inhibit characteristics
Characteristics Conditions min typ max Unit
Vinh Inhibit input
voltage
Vo = on Vi minVi max
TC minTC max
- 50 +0.8
V
Vo = off +2.4 +50
trSwitch-on time Vi = Vi nom
RL = Vo nom / Io nom
130
ms
tfSwitch-off time 25
Ii inh Input current when inhibited Vi = Vi nom 25 mA
Vi+
Gi– Go–
i
Vo+
I
inh
V
inh
06009a
Fig. 89
Definition of Iinh and Vinh
R Output Voltage Adjust
Note: With open R input, Vo Vo nom.
The output voltage Vo can either be adjusted with an external voltage source (Vext ) or with an external resistor (Rext1 or Rext2). The
adjustment range is 0 – 108% of Vo nom. The minimum differential voltage Vio min between input and output (see Electrical Input
Data) should be maintained.
a) Vo = 0 – Vo max , using Vext between R and G (Go– for PSL):
Vo Vext
Vext 2.5 V • _____ Vo Vo nom _____
Vo nom 2.5 V
Caution: To prevent damage, Vext should not exceed 20 V, nor be negative.
b) Vo = 0 to Vo nom, using Rext1 between R and G (Go– for PSL):
4000 Ω • Vo
Vo nom Rext1
Rext1 __________ Vo ____________
Vo nomVo
Rext1 + 4000 Ω
c) Vo = Vo nom to Vo max , using Rext2 between R and G (Go– for PSL):
4000 Ω • Vo • (Vo nom – 2.5 V)
Rext2 _______________________
2.5 V • (Vo – Vo nom)
Vo nom • 2.5 V • Rext2
Vo
_________________________________
2.5 V • (Rext2 + 4000 Ω) – Vo nom 4000 Ω
Caution: To prevent damage, Rext2 should never be less than 47 kΩ
R
Vo+
Go–
+
V
ext
4 k
V
ref
= 2.5 V
Control
logic R
ext1
R
ext2
Gi–
Vi+
+
G
Fig. 10
Voltage adjustment via R-input
LED Output Voltage Indicator
An LED indicator (yellow for PSC, green for PSL) is illuminated, when the output voltage is higher than approx. 3 V.
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Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
Table 6: Electromagnetic immunity type tests
Phenomenon Standard Level Coupling mode Value
applied
Waveform Source
imped.
Test procedure In
oper.
Perf.
crit. 2
Voltage surge 3 IEC 60571-1
3i/c, +i/ i
800 Vp100 µs
100 Ω
1 positive and
1 negative surge
per coupling
mode
yes B
1500 Vp50 µs
3000 Vp5 µs
4000 Vp1 µs
7000 Vp100 ns
Electrostatic
discharge
IEC/EN
61000-4-2
4 3contact discharge
to case
8000 Vp 3
1/50 ns 330 Ω 10 pos. & 10 neg.
discharges yes A 5
2 44000 Vp 4
Electromagnetic
field
IEC/EN
61000-4-3
3 3
antenna 10 V/m 3
AM 80% / 1 kHz N/A 80 – 1000 MHz yes A
2 43 V/m 4
Electrical fast
transients / burst
IEC/EN
61000-4-4
3 i/c, +i/ i 2000 Vp
bursts of 5/50 ns;
5 kHz repet. rate;
transients with 15 ms
burst duration;
300 ms period
50 Ω
60 s positive
60 s negative
transients per
coupling mode
yes A 5
B 4
Surges IEC/EN
61000-4-5 2 3
i/c 1000 Vp
1.2 / 50 µs
12 Ω
9 µF 5 pos. & 5 neg.
surges per
coupling mode
yes B 5
+i/ i 500 Vp
2 Ω
18 µF
Conducted
disturbances
IEC/EN
61000-4-6
3 3
i, o, signal wires 10 VAC 3
AM 80% / 1 kHz 150 Ω 0.15 – 80 MHz yes A
2 43 VAC 4
1 i = input, o = output, c = case.
2 A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs possible
3 Not applicable for -2 models
4 Valid for -2 models
5 Option L necessary; with option C, manual reset might be necessary.
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PSC/PSL Series
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Electromagnetic Emission
0
dBµV
20
40
60
80
PSC126-7iR; Vi = 60 V, Vo = 12 V; Io = 6 A
EN 55022:2010, Class B. Ci = 120 µ + Filter FP144; 20-Nov-2015
0.2 0.5 1 2 5 10 20 MHz
EN 55011 A qp
EN 55011 A av
JM232
30 50 100 200 500 1000 MHz
dBµV/m
10
20
30
40
0
60
JM233
50
PSC126-7iR; Vi = 60 V, Vo = 12 V; Io = 6 A; R&S ESCS 30, 10 m,
EN 55022:2010, Class B. Ci = 120 µ + Filter FP144; 20-Nov-2015
Fig. 11a
PSC126-7iR: Conducted disturbances at the input as per
EN 55011, at Vi = 60 V, Vo = 12 V, Io = 6 A.
External Ci = 120 µF + Filter FP144.
Fig. 11b
PSC126-7iR: Radiated disturbances in 10 m distance, as
per EN 55011, at Vi = 60 V, Vo = 12 V,Io = 6 A.
0
dBµV
20
40
60
80
PSL36Z8B-0LR; Vi = 60 V, Vo = 36 V; Io = 8 A
EN 55011+A1:2010, Group 1, Class A. Ci = 120 µF. 19-May-2016
0.2 0.5 1 2 5 10 20 MHz
EN 55011 A av
EN 55011 A qp
JM230
30 50 100 200 500 1000 MHz
dBµ V/m
10
20
30
40
0
60
VUS EMC Labatory, ECSC 30, R&S, PSL36Z8B-0LR; Vi = 60 V, Vo = 36 V / 8 A
Testdistance 10 m, EN 55011+A1:2010, Group 1, Class A, 19-May-2016
JM231
50
Fig. 12a
PSL36Z8B: Conducted disturbances at the input according
to EN 55011, group 1, class A, at Vi = 60 V, Vo = 12 V, Io = 8 A;
external Cext = 120 µF.
Fig. 12b
PSL36Z8B: Radiated disturbances in 10 m distance,
accord ing to EN 55011, at Vi = 60 V, Vo = 12 V, Io = 8 A;
external Cext = 120 µF.
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PSC/PSL Series
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Immunity to Environmental Conditions
Table 7: Mechanical and climatic stress
Test method Standard Test Conditions Status
Cab Damp heat
steady state
IEC/EN 60068-2-78
MIL-STD-810D section 507.2
Temperature: 40 ±2 °C
Regulator not
operating
Relative humidity: 93 +2/-3 %
Duration: 56 days
Ea Shock
(half-sinusoidal)
IEC/EN 60068-2-27
MIL-STD-810D section 516.3
Acceleration amplitude: 50 gn = 490 m/s2
Regulator
operating
Bump duration: 11 ms
Number of bumps: 18 (3 in each direction)
Fc Vibration
(sinusoidal)
IEC/EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude: 0.35 mm (10 – 60 Hz)
5 gn = 49 m/s2 (60 - 2000 Hz) Regulator
operating
Frequency (1 Oct/min): 10 – 2000 Hz
Test duration: 7.5 h (2.5 h in each axis)
Fda Random vibration
wide band
Reproducibility high
IEC/EN 60068-2-35
DIN 40046 part 23
Acceleration spectral density: 0.05 gn
2/Hz
Regulator
operating
Frequency band: 20 to 500 Hz
Acceleration magnitude: 4.9 gn rms
Test duration: 3 h (1 h in each axis)
Kb Salt mist cyclic
(sodium chloride
NaCl solution)
IEC/EN 60068-2-52 Concentration: 5 % (30 °C)
Regulator not
operating
Duration: 2 h per cycle
Storage: 40 °C, 93% rel. humidity
Storage duration: 22 h per cycle
Number of cycles: 3
Temperatures
Table 8: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)
Temperature -2 -7 (Option) -9 Unit
Characteristics Conditions min typ max min typ max min typ max
TAAmbient temperature 1 Regulator operating - 10 50 - 25 71 - 40 71
°C
TCCase temperature - 10 80 - 25 95 - 40 95
TSStorage temperature 1 Not operational - 25 100 - 40 100 - 55 85
1 See Thermal Considerations and Overtemperature Protection.
Reliability
Table 9: Typical MTBF and device hours
MTBF Ground benign Ground fixed Ground mobile Device hours 1
Case temperature TC = 40 °C TC = 40 °C TC = 70 °C TC = 50 °C
MTBF accord. to MIL-HDBK-217F 660 000 h 143 000 h 81 000 h 68 000 h 2 800 000 h
1 Statistical values, based on an average of 4300 working hours per year and in general field use
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PSC/PSL Series
Positive Switching Regulators
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Mechanical Data
PSC models
Dimensions in mm.
European
Projection
Gi– Go– Vo+
i
Vi+ D
V
o
V
t
G R
7.5 27.5
18.5 11.3
40 7.5 10 7.5 10 (14)
7.5
10
±2
4.3
min. 8
5
±0.5
144
12.5
±1
43
±1
(45)
88
±1
7
±2
151
±1
32.2
±0.5
2.8 x 0.8
8.1
±1
6.35
±1
6.3 x 0.8
Distance between M4 mounting screws
Measuring point
of case temperature T
C
Yellow LED output
voltage indicator
Potentiometer
(option P)
Potentiometer
(option D)
09023a
V
o
Fig. 13
Case C03, weight 440 g; Aluminium, black finish and self cooling
PSL models
The regulators are designed to be inserted into a DIN-rack according to IEC 60297-3. Dimensions in mm.
127
159.4
168.5
173.7 ±0.5
100
(19.1) 6.4
11
Measuring point of
case temperature TC
2
32
4.9
ø5.2
Green LED
Potentio-
meter (opt. P)
Mounting plane of
connector H11
ø3
0.9
17.4 10.9
1.5
20.32
min. 5
Potentiometer (option D)
Threads M3; 4 mm deep
(for mounting screws)
107 ±1
88
99
9.5
36.5 ±0.8
100 ±0.5
35 26.6
34.3
40.6
M2.5
20 ±0.5
4 TE
6 TE
2 TE
4 TE
09027a
Fig. 14
Case L04, weight 550 g; Aluminium, fully enclosed, black finish EP powder-coated, and self cooling
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PSC/PSL Series
Positive Switching Regulators
© 2018 Bel Power Solutions & Protection
Safety and Installation Instructions
Pin Allocation
The pins of PSC models are printed onto the case of the regulator.
The pin allocation of PSL models is shown in the table below:
Table 10: H11 connector pin allocation (PSL models)
Electrical Determination Type H11
Pin No. Design.
R-input (or inhibit input) 1
Undervoltage monitor (Option D)
2
5
R (i)
D
Output voltage (negative)
Output voltage (negative)
Output voltage (positive)
Output voltage (positive)
8
11
14
17
Go-
Go-
Vo+
Vo+
Input voltage (negative)
Input voltage (negative)
Input voltage (positive)
Input voltage (positive)
Protective earth PE (leading pin)
20
23
26
29
32
Gi-
Gi-
Vi+
Vi+
1 R-input is used for the inhibit function. Consequently, option R and i exclude each other.
Installation Instruction
Installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance,
casualty, markings, and segregation requirements of the end-use application.
Check for hazardous voltages before connecting. Connections of PSC models can be made using fast-on or soldering technique.
PSL models should be plugged into a DIN-rack
The input and the output circuit are not separated, i.e., the negative path is internally interconnected.
The regulators should be connected to a secondary circuit.
Do not open the regulator !
Ensure that a unit failure (e.g., by an internal short-circuit) does not result in a hazardous condition.
Cleaning Liquids
In order to avoid possible damage, any penetration of cleaning fluids must be prevented, since the power supplies are not
hermetically sealed.
Protection Degree
The protection degree is IP 30 (IP 20, if equipped with option P, D, or D1 and for PSC models). It applies only, if the regulator is
plugged-in or the matching female connector is properly attached.
Standards and Approvals
All switching regulators have been approved according to the latest edition of IEC/EN 60950-1 and UL/CSA 60950-1.
The regulators have been evaluated for:
Building in
The use in a pollution degree 2 environment
Connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 V.
The switching regulators are subject to manufacturing surveillance in accordance with the above mentioned standards and with
ISO 9001:2015.
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PSC/PSL Series
Positive Switching Regulators
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Isolation
The resistance of the protective earth connection (max. 0.1 ) is tested only for PSL models.
PSC models: Electric strength test voltage between input connected with output against case: 2200 VDC, 1 s
(for some PSC models only with version V103 or higher).
PSL models: The electric strength between the input, inter con nected with the output, and the case is tested with 500 VDC (all -2 models),
750 VDC (models with Vi max = 80 V), or 1500 VDC (models with Vi max = 144) during 1 s.
These tests are performed in the factory as routine test in accordance with EN 50514 and IEC/EN 60950. The electric strength
test should not be repeated by the customer.
Railway Application
The regulators have been developed observing the railway standards EN 50155 and EN 50121. All boards are coated with a
protective lacquer.
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PSC/PSL Series
Positive Switching Regulators
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Description of Options
-7 Temperature Range
This option defines restricted temperature range as specified in table 8 (not for new designs).
P Potentiometer
Note: Option P is not recommended for new designs and not for several regulators operating in parallel connection.
Option P excludes the R function; the R-input (pin 16) should be left open-circuit. The output voltage Vo can be adjusted in the
range 90 – 110% of Vo nom.
However, the minimum differential voltage Vi o min between input and output specified in Electrical Input Data should be respected.
L Input Filter
Option L is recommended to reduce superimposed inter ference voltages and to prevent oscillations, if input lines exceed the length
of approx. 5 m in total. The fundamental wave (approx. 120 kHz) of the reduced interference voltage between Vi+ and Gi– has,
with an input line inductance of 5 µH, a maximum magnitude of 4 mVAC.
The input impedance of the switching regulator at 120 kHz is about 3.5 . The harmonics are small in comparison with the
fundamental wave.
With option L, the maximum permissible additionally super imposed ripple vi of the input voltage (rectifier mode) at a specified input
frequency fi has the following values:
vi max = 10 Vpp at 100 Hz or Vpp = 1000 Hz/fi • 1V
C Thyristor Crowbar
Option C protects the load against power supply malfunction. It is not designed to sink external currents. A fixed-value monitoring
circuit checks the output voltage Vo. When the trigger voltage Vo c is reached, the thyristor crowbar triggers and disables the output.
It can be deactivated by removal of the input voltage. In case of a defect switching transistor, the internal fuse prevents excessive
current.
Type of the fuse:
• Regulators with Io nom = 6 A: 6.3 A / 250 V, slow, 5 x 20 mm
• Regulators with Io nom > 6 A: 16 A / 250 V, slow, 5 x 20 mm
Note: The crowbar can be reset by removal of the input voltage only. The inhibit signal cannot deactivate the thyristor.
Table 11: Crowbar trigger levels
Characteristics Conditions Vo = 5.1 V Vo = 12 V Vo = 15 V Vo = 24 V Vo = 36 V Unit
min typ max min typ max min typ max min typ max min typ max
Vo c Trigger voltage TC min TC max
Vi min Vi max
Io = 0 – Io nom
5.8 6.8 13.5 16 16.5 19 27 31 40 45 V
tSDelay time 1.5 1.5 1.5 1.5 1.5 µs
D Input Undervoltage Monitor
Terminal D and Go– are connected to a normally conducting field effect transistor (JFET). A 0.5 W Zener diode protects against
overvoltages.
The switching characteristics of the option D output are shown in fig. 16.
The voltage Vt can be externally adjusted by a trim potentiometer. The hysteresis VH of Vt is <2%. Pin D stays low for a minimum
time tlow min, in order to prevent any oscillation. Vt can be set to a value between Vi min and Vi max. Note that the JFET becomes
conductive, when VD exceeds approx. 7 V.
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PSC/PSL Series
Positive Switching Regulators
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Vi +
Gi – Go –
8.2 V
D
V
D
+5 V
100 pF
I
D
10 k
JFET
V
t
11025
V
D
V
D high
V
D low
V
t
V
i
V
H
11026
Fig. 15
Test circuit with definition of voltage VD and current ID
Fig. 16
Definition of Vt and VH
Table 12: Data of option D
Characteristics Conditions PSC / PSL Unit
min typ max
VD low Low impedance Vi
< Vt, ID 2.5 mA 0.8 V
VD high High impedance Vi > Vt + VH, ID > 25 mA 4.75
tlow min Min. duration VD low 30 ms
tD f Response to VD low 1 ms
IDCurrent through D 20 mA
K Connector Coding Strip
For PSL models only.
G RoHS Compliance
Models with G are RoHS-compliant for all six substances.
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PSC/PSL Series
Positive Switching Regulators
© 2018 Bel Power Solutions & Protection
Accessories
A variety of electrical and mechanical accessories are available including:
Battery sensor [S-KSMH...] for using the regulator as battery charger. Different cell characteristics can be selected; see fig. 17
and the Temperature Sensors data sheet.
56 (2.2")L
L = 2 m (standard length)
other cable lengths on request
adhesive tape
26 (1.02")
9.8 (0.4")
09125a
European
Projection
Fig . 17
Battery temperature sensors
Accessories suitable for PSC models
Solder-tags for direct mounting of the regulator to a PCB board (Delivery content: 10 pcs); see fig. 18.
Different filters and ring core chokes for ripple and interference reduction; see fig. 19
PCB isolation pads for easy and safe PCB-mounting; see fig. 20
Input filters FP; see table 13 and fig. 21.
1
5.08
17
5
12035a
7
5
1
Fig. 18
Solder tag HZZ01204-G.
Fig. 19
Different filters
JM172a
71
101
35.5
107
Ø3.5
37.8
±0.5
ø1.3
±1
M 2.5
0.9 x 0.56
25
±0.5
min. 4.5
13.22
±0.5
(3.22)
5.08
3.66 10.16 15.24 (3.66)
16.6
±1
4
1
2
3
4
6.8
±1
5.08
5.08
12016a
positioning
pin
positioning
pin
European
Projection
Fig. 20
Different mating connectors, including code key system
Fig. 21
Mechanical data of FP filters. Weight approx. 30 g
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Positive Switching Regulators
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Table 13: Input filters FP. TA = 25°C unless otherwise specified
Characteristics Conditions FP 38 2 FP 80 FP 144 Unit
min typ max min typ max min typ max
IFn Rated current 1 L = 0.75 Lo4 4 2 A
VFn Rated voltage TC minTC max 5 40 5 80 15 144 VDC
RFOhmic resistance 18 20 22 18 20 22 90 95 100 mΩ
LoNo load inductance IL = 0, TC minTC max 30 34 38 30 34 38 88 100 112 µH
TAAmbient temperature IF = IFn - 40 80 - 40 80 - 40 95
°C
TCCase temperature - 40 92 - 40 92 - 40 98
TSStorage temperature Not operational - 40 100 - 40 100 - 55 100
1 For currents IF > 4 A the following derating takes place: TA max = 100 – 1.3 • IF
2 [°C], TC max = 100 – 0.49 • IF
2 [°C].
2 FP 38 is obsolete.
Accessories suitable for PSL models:
Various mating connectors H11, including screw, solder, fast-on, or press-fit terminals; see the data sheet Cassette Style Mating
Connectors.
Code key system for connector coding. Coding wedges HZZ00202-G (5 pie ces); see fig. 22.
Various front panels for 19" racks with 3U heigth, Schroff or Intermas; see fig. 23.
Fig. 22
Different mating connectors, including code key system
Fig. 23
Different front panels
For additional accessory product information, see the accessory data sheets listed with each product series at our web site.
NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.

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Unit Price: 562.423
DC/DC CONVERTER 24V 144W
Available Quantity: 0
Unit Price: 511.293
DC/DC CONVERTER 24V 192W
Available Quantity: 0
Unit Price: 511.293
DC/DC CONVERTER 36V 288W
Available Quantity: 0
Unit Price: 511.293
DC/DC CONVERTER 48V 288W
Available Quantity: 0
Unit Price: 511.293
DC/DC CONVERTER 5.1V 77W
Available Quantity: 0
Unit Price: 511.293
DC/DC CONVERTER 5.1V 61W
Available Quantity: 0
Unit Price: 531.744
DC/DC CONVERTER 12V 72W
Available Quantity: 0
Unit Price: 603.325
DC/DC CONVERTER 5.1V 51W
Available Quantity: 0
Unit Price: 603.325
DC/DC CONVERTER 5.1V 61W
Available Quantity: 0
Unit Price: 603.325