PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Input voltage up to 144 VDC
Single output of 12 - 48 VDC
No input to output isolation
•
High efficiency up to 97%
•
Extremely wide input voltage range
•
Very good dynamic properties
•
Input undervoltage lock-out
•
External output voltage adjustment and inhibit
•
Two temperature ranges
107
4.2"
3U
37
1.5"
8 TE
168
6.6"
•
Continuous no-load and short-circuit proof
•
No derating
Safety according to IEC/EN 60950, UL 1950
Summary
The PSL series of positive switching 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 voltage range,
high reliability, low ripple and excellent dynamic response.
Modules with input voltages up to 144 V are specially de-
signed for battery driven mobile applications. The case de-
sign allows operation at nominal load up to 71°C without
additional cooling.
The modules are fitted with an H11 connector and may ei-
ther be plugged into 19" rack system according to DIN
41494, or be chassis mounted.
Model Selection and Key Data
Table 1: Type survey
Output
voltage
V
o nom
[V]
12
15
24
36
48
1
2
Output
current
I
o nom
[A]
6
6
6
6
6
Input
voltage range
V
i
[V]
1
18 - 144
22 - 144
31 - 144
44 - 144
58 - 144
Input
voltage
V
i nom
[V]
60
60
60
80
80
Efficiency
2
h
min
[%]
88
89
93
95
96
h
typ
[%]
89
90
94
96
97
Type
designation
PSL 126-7R
PSL 156-7R
PSL 246-7R
PSL 366-7R
PSL 486-7R
Options
-9, L, i, P,
C, D, A
Surges up to 156 V for 2 s. See also:
Electrical Input Data:
D
V
io min
.
(min. difference V
i
-V
o)
Efficiency at
V
i nom
and
I
o nom
.
Non standard input/output configurations or special custom adaptions are available on request.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) .............................. 8
Immunity to Environmental Conditions ............................ 9
Mechanical Data ............................................................ 10
Safety and Installation Instructions ................................ 10
Description of Options ................................................... 13
Accessories ................................................................... 15
EC-Declaration of Conformity ........................................ 16
Summary .......................................................................... 1
Model Selection and Key Data ......................................... 1
Part Number Description ................................................. 2
Functional Description ..................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 5
Auxiliary Functions ........................................................... 7
REV. APR 26, 2004
Page 1 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Part Numer Description
Type Key
PSL 12 6 -7 L i R P C D A
Positive switching regulator in case L04 ..................... PSL
Nominal output voltage in volt ................................. 12 - 48
Nominal output current in ampere ................................... 6
Operational ambient temperature range
T
A
–25 to 71°C ......................................................... -7
–40 to 71°C (option) ............................................ -9
Input filter (option) ............................................................ L
Inhibit input
1
(option) ........................................................ i
Control input for output voltage adjustment
1
.................. R
Potentiometer
1
(option) ................................................... P
Thyristor crowbar (option) ............................................... C
Data save input undervoltage monitor (option) .......... D/D1
Test sockets (option) ........................................................ A
1
Feature R excludes options i and P and vice versa.
Example:
PSL 126-7LiPC = A positive switching regulator with a 12 V, 6 A output, ambient temperature range of
–25 to 71°C, input filter, inhibit input, potentiometer and thyristor crowbar.
Produkt Marking
Series designation, applicable safety approval and recognition marks, warnings, pin allocation, Power-One patent nos.
and company logo.
Specific type designation, input voltage range, nominal output voltage and current, pin allocation of auxiliary function and
options and protection degree.
Identification of LED, optional potentiometer and test sockets.
Label with batch no., serial no. and data code comprising production site, modification status of the main PCB and date of
production.
REV. APR 26, 2004
Page 2 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Functional Description
The switching regulators are designed using the buck con-
verter topology. See also:
Technical Information: Topolo-
gies.
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 accom-
plished by varying the on to off duty ratio of the power
switch.
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 trans-
former with rectifier). To optimise customer’s needs, addi-
tional options and accessories are available.
03021
14
29
I
o
Vo+
Input Filter Option L
I
i
Vi+
17
5
26
Option
C
D (option)
+A (option)
V
i
Control circuit
Option
C
2
V
o
–A (option)
R (or option i)
Go–
11
20
Gi–
23
32
V
t
Option D
8
V
o
Option P
Fig. 1
Block diagram
REV. APR 26, 2004
Page 3 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Electrical Input Data
General Conditions:
T
A
= 25°C, unless
T
C
is specified
Table 2a: Input data
Input
Characteristics
Conditions
min
18
PSL 126
typ
max
144
6
12
15
35
250
5
40
250
5
40
350
25
125
B
B
35
250
5
40
350
25
125
B
A
µs
min
22
PSL 156
typ
max
144
7
19
35
mA
A
µs
min
31
PSL 246
typ
max
144
7
Unit
VDC
V
i
Operating input voltage
1
D
V
io min
Min. diff. voltage
V
i
–
V
o
I
o
= 0 -
I
o nom
T
C min
-
T
C max
V
i o
I
i 0
I
inr p
t
inr r
t
inr h
I
inr p
t
inr r
t
inr h
u
i RFI
Undervoltage lock-out
No load input current
Peak value of inrush current
Rise time
Time to half-value
Peak value of inrush current
Rise time
Time to half-value
Input RFI level, EN 55011/22
V
i nom
,
I
o nom
0.15 - 30 MHz
with option L
I
o
= 0,
V
i min
-
V
i max
V
i nom
without option L
V
i nom
with option L
350
25
125
Table 2b: Input data
Input
Characteristics
Conditions
min
44
PSL 366
typ
max
144
8
29
40
40
250
5
40
250
5
40
350
25
125
B
B
A
µs
45
mA
A
µs
min
58
PSL 486
typ
max
144
10
Unit
VDC
V
i
V
i o
I
i 0
I
inr p
t
inr r
t
inr h
I
inr p
t
inr r
t
inr h
u
i RFI
1
Operating input voltage
1
D
V
io min
Min. diff. voltage
V
i
–
V
o
Undervoltage lock-out
No load input current
Peak value of inrush current
Rise time
Time to half-value
Peak value of inrush current
Rise time
Time to half-value
I
o
= 0 -
I
o nom
T
C min
-
T
C max
I
o
= 0,
V
i min
-
V
i max
V
i nom
without option L
V
i nom
with option L
350
25
125
Input RFI level, EN 55011/22
V
i nom
,
I
o nom
0.15 - 30 MHz
with option L
Surges up to 156 V for 2 s (complying to LES-DB standard for
V
Batt.
= 110 V).
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 super-
imposed interference voltages. See also:
Technical Infor-
mation: Application Notes.
+
Vi+
a
b
Gi–
04016
Vo+
Go–
Fig. 2
Switching regulator with long supply lines.
REV. APR 26, 2004
Page 4 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Electrical Output Data
General Conditions:
–
T
A
= 25°C, unless
T
C
is specified
– With R or option P, output voltage
V
o
=
V
o nom
at
I
o nom
Table 3a: Output data
Output
Characteristics
Conditions
min
11.93
0
6.0
30
34
25
30
100
60
±2
±0.02
PSL 126
typ
max
12.07
6.0
7.8
45
49
40
50
min
14.91
0
6.0
50
54
25
30
100
60
±3
±0.02
PSL 156
typ
max
15.09
6.0
7.8
70
74
40
50
min
23.86
0
6.0
50
54
80
60
120
80
±5
±0.02
µs
mV/K
%/K
PSL 246
typ
max
24.14
6.0
7.8
70
75
100
100
mV
mV
pp
Unit
V
A
V
o
I
o
I
oL
u
o
Output voltage
Output current
1
Output current limitation
response
Output
voltage
noise
Switching freq.
Total
V
i nom
,
I
o nom
V
i min
-
V
i max
T
C min
-
T
C max
V
i nom
,
I
o nom
IEC/EN 61204
2
BW = 20 MHz
V
i min
-
V
i max
,
I
o nom
V
i nom
,
I
o
= 0 -
I
o nom
V
i nom
I
o nom
↔
1
/
3
I
o nom
IEC/EN 61204
2
V
i min
-
V
i max
I
o
= 0 -
I
o nom
D
V
o U
D
V
o l
Static line regulation
Static load regulation
Dynamic
load
regulation
Voltage deviat.
Recovery time
u
o d
t
d
a
Uo
Temperature coefficient
D
V
o
/DT
C
(T
C min
-
T
C max
)
Table 3b: Output data
Output
Characteristics
Conditions
min
35.78
0
6.0
50
54
200
120
140
100
±8
±0.02
PSL 366
typ
max
36.22
6.0
7.8
90
94
300
200
min
47.71
0
6.0
55
59
100
180
150
100
±10
±0.02
µs
mV/K
%/K
PSL 486
typ
max
48.29
6.0
7.8
110
115
200
250
mV
mV
pp
Unit
V
A
V
o
I
o
I
oL
u
o
Output voltage
Output current
1
Output current limitation
response
Output
voltage
noise
Switching freq.
Total
V
i nom
,
I
o nom
V
i min
-
V
i max
T
C min
-
T
C max
V
i nom
,
I
o nom
IEC/EN 61204
2
BW = 20 MHz
V
i min
-
V
i max
,
I
o nom
V
i nom
,
I
o
= 0 -
I
o nom
V
i nom
I
o nom
↔
1
/
3
I
o nom
IEC/EN 61204
2
V
i min
-
V
i max
I
o
= 0 -
I
o nom
D
V
o U
D
V
o l
Static line regulation
Static load regulation
Dynamic
load
regulation
Voltage deviat.
Recovery time
u
o d
t
d
a
Uo
Temperature coefficient
D
V
o
/DT
C
(T
C min
-
T
C max
)
1
2
See also:
Thermal Considerations.
See:
Technical Information: Measuring and Testing.
REV. APR 26, 2004
Page 5 of 16
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