PSL156-7LRCDA [BEL]
DC-DC Regulated Power Supply Module, 1 Output, METAL, CASE L04, MODULE;
| 型号： | PSL156-7LRCDA |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, METAL, CASE L04, MODULE |
| 文件： | 总16页 (文件大小：255K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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"
3 U
• Continuous no-load and short-circuit proof
• No derating
168
6.6"
37
1.5"
8 TE
Safety according to IEC/EN 60950, UL 1950
Summary
signed for battery driven mobile applications. The case de-
sign allows operation at nominal load up to 71°C without
additional cooling.
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-
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
Vo nom [V]
Output
current
Io nom [A]
Input
voltage range
Vi [V] 1
Input
voltage
Vi nom [V]
Efficiency 2
Type
designation
Options
h
min [%]
htyp [%]
89
12
15
24
36
48
6
6
6
6
6
18 - 144
22 - 144
31 - 144
44 - 144
58 - 144
60
60
60
80
80
88
89
93
95
96
PSL 126-7R
PSL 156-7R
PSL 246-7R
PSL 366-7R
PSL 486-7R
-9, L, i, P,
C, D, A
90
94
96
97
)
1 Surges up to 156 V for 2 s. See also: Electrical Input Data: DVio min. (min. difference Vi-Vo
2 Efficiency at Vi nom and Io nom
.
Non standard input/output configurations or special custom adaptions are available on request.
Table of Contents
Page
Page
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
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
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 TA
–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
Io
14
17
5
Vo+
I i
29
Vi+
Option
26
D (option)
C
+A (option)
–A (option)
Control circuit
Vi
Vo
Option
C
R (or option i)
Go–
20
Gi–
23
2
8
Vt
Vo
11
32
Option D
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: TA = 25°C, unless TC is specified
Table 2a: Input data
Input
PSL 126
PSL 156
PSL 246
Characteristics
Conditions
min
18
typ
max
144
6
min
22
typ
max
144
7
min
31
typ
max
Unit
Vi
Operating input voltage 1
Io = 0 - Io nom
TC min - TC max
144 VDC
7
DVio min Min. diff. voltage Vi – Vo
Vi o
Undervoltage lock-out
No load input current
12
15
19
Ii 0
Io = 0, Vi min - Vi max
35
35
35
mA
A
Iinr p
tinr r
tinr h
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Vi nom
250
5
250
5
250
5
without option L
Rise time
µs
Time to half-value
40
40
40
Peak value of inrush current Vi nom
350
25
350
25
350
25
A
with option L
Rise time
µs
Time to half-value
125
125
125
Input RFI level,EN 55011/22 Vi nom, Io nom
B
B
B
0.15 - 30 MHz
with option L
Table 2b: Input data
Input
PSL 366
PSL 486
Characteristics
Conditions
min
44
typ
max
144
8
min
58
typ
max
144
10
Unit
Vi
Operating input voltage 1
Io = 0 - Io nom
TC min - TC max
VDC
DVio min Min. diff. voltage Vi – Vo
Vi o
Undervoltage lock-out
No load input current
29
40
Ii 0
Io = 0, Vi min - Vi max
40
45
mA
A
Iinr p
tinr r
tinr h
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Vi nom
250
5
250
5
without option L
Rise time
µs
Time to half-value
40
40
Peak value of inrush current Vi nom
350
25
350
25
A
with option L
Rise time
µs
Time to half-value
125
125
Input RFI level,EN 55011/22 Vi nom, Io nom
B
B
0.15 - 30 MHz
with option L
1 Surges up to 156 V for 2 s (complying to LES-DB standard for VBatt. = 110 V).
04016
External Input Circuitry
Vo+
Vi+
Gi–
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.
+
a
b
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:
– TA = 25°C, unless TC is specified
– With R or option P, output voltage Vo = Vo nom at Io nom
Table 3a: Output data
Output
PSL 126
PSL 156
PSL 246
Characteristics
Conditions
Vi nom, Io nom
min
typ
max
min
typ
max
min
typ
max
24.14
6.0
Unit
V
Vo
Io
Output voltage
11.93
0
12.07 14.91
15.09 23.86
Output current 1
Vi min - Vi max
TC min - TC max
6.0
7.8
0
6.0
7.8
0
A
IoL
Output current limitation
response
6.0
6.0
6.0
7.8
uo
Output
voltage
noise
Switching freq. Vi nom, Io nom
IEC/EN 61204 2
30
34
45
49
50
54
70
74
50
54
70
75
mVpp
mV
Total
BW = 20 MHz
DVo U Static line regulation
Vi min - Vi max, Io nom
Vi nom, Io = 0 - Io nom
25
30
40
50
25
30
40
50
80
60
100
100
DVo l
uo d
td
Static load regulation
Dynamic
load
regulation
Voltage deviat. Vi nom
100
60
100
60
120
80
1
↔
Io nom
/ Io nom
3
Recovery time
µs
IEC/EN 61204 2
aUo
Temperature coefficient
DVo/DTC (TC min - TC max
Vi min - Vi max
Io = 0 - Io nom
±2
±3
±5
mV/K
)
±0.02
±0.02
±0.02 %/K
Table 3b: Output data
Output
PSL 366
PSL 486
Characteristics
Conditions
Vi nom, Io nom
min
typ
max
min
typ
max
48.29
6.0
Unit
V
Vo
Io
Output voltage
Output current 1
35.78
0
36.22 47.71
Vi min - Vi max
TC min - TC max
6.0
7.8
0
A
IoL
Output current limitation
response
6.0
6.0
7.8
uo
Output
voltage
noise
Switching freq. Vi nom, Io nom
50
54
90
94
55
59
110
115
mVpp
mV
IEC/EN 61204 2
BW = 20 MHz
Total
DVo U Static line regulation
Vi min - Vi max, Io nom
Vi nom, Io = 0 - Io nom
200
120
140
100
300
200
100
180
150
100
200
250
DVo l
uo d
td
Static load regulation
Dynamic
load
regulation
Voltage deviat. Vi nom
1
↔
Io nom
/ Io nom
3
Recovery time
µs
IEC/EN 61204 2
aUo
Temperature coefficient
DVo/DTC (TC min - TC max
Vi min - Vi max
Io
Io = 0 -
nom
±8
±10 mV/K
±0.02 %/K
)
±0.02
1 See also: Thermal Considerations.
2 See: Technical Information: Measuring and Testing.
REV. APR 26, 2004
Page 5 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
05010
Vo
Parallel and Series Connection
Vod
DVo I
DVo I
Outputs of equal nominal voltages can be parallel-con-
nected. However, the use of a single unit with higher output
power, because of its power dissipation, is always a better
solution.
Vod
td
td
t
t
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. Conse-
quently, the max. ambient temperature value should be re-
duced by 10 K.
I /I
o
o nom
1
0
Outputs can be series-connected with any other module. In
series-connection the maximum output current is limited by
the lowest current limitation. Electrically separated source
voltages are needed for each module!
≥10 µs
≥10 µs
Fig. 3
Dynamic load regulation.
Short Circuit Behaviour
Output Protection
A constant current limitation circuit holds the output current
almost constant whenever an overload or a short circuit is
applied to the regulator's output. It acts self-protecting and
recovers – in contrary to the fold back method – automati-
cally after removal of the overload or short circuit condition.
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 out-
put protection is not designed to withstand externally ap-
plied overvoltages. The user should ensure that systems
with Power-One power supplies, in the event of a failure, do
not result in an unsafe condition (fail-safe).
Vo/Vo nom
I
05033
1.2
1.0
0.8
Io L
Thermal Considerations
0.6
When a switching regulator is located in free, quasi-station-
ary air (convection cooling) at a temperature TA = 71°C and
is operated at its nominal output current Io nom, the case
temperature TC will be about 95°C after the warm-up
phase, measured at the Measuring point of case tempera-
ture TC (see: Mechanical Data).
0.4
0.2
Io/Io nom
0
Fig. 5
Overload, short-circuit behaviour Vo versus Io.
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Under practical operating conditions, the ambient tempera-
ture TA may exceed 71°C, provided additional measures
(heat sink, fan, etc.) are taken to ensure that the case tem-
perature 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.
Io/Io nom
Forced cooling
1.0
0.9
0.8
Convection cooling
0.7
0.6
TC max
0.5
0.4
0.3
0.2
0.1
0
T [˚C]
A
T
50
60
70
80
90
100
A min
Fig. 4
Output current derating versus temperature
REV. APR 26, 2004
Page 6 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Auxiliary Functions
R Control for Output Voltage Adjustment
Note: With open R input, Vo ≈ Vo nom.R excludes option P.
The output voltage Vo can either be adjusted with an exter-
nal voltage (Vext) or with an external resistor (R1 or R2).The
adjustment range is 0 - 108% of Vo nom.The minimum differ-
ential voltage DVio min between input and output (see: Elec-
trical Input Data) should be maintained. Undervoltage lock-
out = Minimum input voltage.
Vo+
06035
Vref
4000 Ω
R
+
–
+
Vext
G
Fig. 6
Voltage adjustment with Vext between R and Go–.
a) Vo = 0 - 108% Vo nom, using Vext between R and Go–:
Vo
Vext ≈ 2.5 V • –––––
Vo nom
Vext
Vo ≈ Vo nom • –––––
2.5 V
Caution: To prevent damage Vext should not exceed
20 V, nor be negative and R2 should never be less than
47 kΩ.
Vo+
06036
Vref
R2
R1
4000 Ω
+
–
R
G
Fig. 7
Voltage adjustment with external resistor R1 or R2
b) Vo = 0 - 100% Vo nom, using R1 between R and Go–:
4000 Ω • Vo
R1 ≈ –––––––––––
Vo nom – Vo
Vo nom • R1
Vo ≈ –––––––––––
R1 + 4000 Ω
c) Vo = Vo nom - Vo max, using R2 between R and Vo+:
Vo max = Vo nom + 8%
4000 Ω • Vo • (Vo nom – 2.5 V)
R2 ≈ ––––––––––––––––––––––––
2.5 V • (Vo – Vo nom
)
Vo nom • 2.5 V • R2
Vo ≈ ––––––––––––––––––––––––––––––––
2.5 V • (R2 + 4000 Ω) – Vo nom • 4000 Ω
LED Output Voltage Indicator
A green output indicator LED shines when the output volt-
age is higher than approx. 3 V.
REV. APR 26, 2004
Page 7 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
General condition: Case not earthed.
Table 4: Immunity type tests
Phenomenon
Standard 1
Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
Per-
oper. form. 3
1 MHz burst
disturbance
IEC
60255-22-1
III
i/o, i/c, o/c
+i/–i, +o/–o
i/c, +i/–i
2500 Vp
1000 Vp
800 Vp
400 damped
1 MHz waves/s
200 Ω
2 s per
coupling mode
yes
yes
A 5
B
Voltage surge
IEC 60571-1
100 µs
50 µs
100 Ω
1500 Vp
1 pos. and 1 neg.
voltage surge per
coupling mode
3000 Vp
4000 Vp
7000 Vp
5 µs
1 µs
100 ns
1/50 ns
Electrostatic
discharge
IEC/EN
61000-4-2
4
contact discharge 8000 Vp
to case
330 Ω
10 positive and
10 negative
discharges
yes
A 4 5
Electromagnetic IEC/EN
3
4
antenna
i/c, +i/–i
10 V/m
AM 80%
1 kHz
80 - 1000 MHz
yes
yes
A
field
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
4000 Vp bursts of 5/50 ns 50 Ω
5 kHz rep. rate
60s positive
60s negative
bursts per
A 4 5
transients with
15 ms burst
coupling mode
duration and a
300 ms period
Surge
IEC/EN
61000-4-5
3
3
i/c
2000 Vp
1000 Vp
1.2/50 µs
12 Ω
2 Ω
5 pos. and 5 neg.
surges per
coupling mode
yes
yes
A 4 5
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires 140 dBµV
AM 80%
1 kHz
150 Ω
0.15 - 80 MHz
A
(10 VAC)
1 For related and previous standards see: Technical Information: EMC. 2 i = input, o = output, c = case.
3 A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.
4 Option L neccessary. 5 With option C, manual reset might be necessary.
Electromagnetic Emission
For emission levels refer to Electrical Input Data.
[dBµV]
90
07019
80
EN 55022 A
EN 55022 B
70
60
50
40
30
20
10
Fig. 8
0
MHz
Typical disturbance voltage (quasi-peak) at the input ac-
cording to EN 55011/22, measured at Vi nom and Io nom
.
REV. APR 26, 2004
Page 8 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Immunity to Environmental Conditions
Table 5: Mechanical stress
Test Method
Standard
Test Conditions
Temperature:
Status
Ca
Ea
Eb
Fc
Damp heat,
steady state
IEC/DIN 60068-2-3
MIL-STD-810D, section 507.2 Relative humidity:
Duration:
40 ±2 °C
%
56 days
Unit not
operating
93 +2/-3
Shock
(half-sinusoidal)
IEC/EN/DIN 60068-2-27
MIL-STD-810D, section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
100 gn = 981 m/s2
6 ms
18 (3 each direction)
Unit
operating
Bump
(half-sinusoidal)
IEC/EN/DIN 60068-2-29
MIL-STD-810D, section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
40 gn = 392 m/s2
6 ms
6000 (1000 each direction)
Unit
operating
Vibration
IEC/EN/DIN 60068-2-6
MIL-STD-810D, section 514.3
Acceleration amplitude:
0.35 mm (10 - 60 Hz)
Unit
(sinusoidal)
5 gn = 49 m/s2 (60 - 2000 Hz) operating
Frequency range (1 Oct/min): 10 - 2000 Hz
Test duration:
7.5 h (2.5 h each axis)
Fda Random vibration IEC 60068-2-35
Acceleration spectral density: 0.05 g2/Hz
Unit
wide band
Reproducibility
high
DIN 40046, part 23
Frequency band:
Acceleration magnitude:
Test duration:
20 - 500 Hz
4.9 grms
3 h (1 h each axis)
operating
Kb
Salt mist, cyclic
(sodium chloride
NaCl solution)
IEC/EN/DIN IEC 60068-2-52 Concentration:
5% (30°C)
Unit not
operating
Duration:
Storage:
Storage duration:
Number of cycles:
2 h per cycle
40°C, 93% rel. humidity
22 h per cycle
3
Table 6: Temperature specifications, valid for an air pressure of 800 - 1200 hPa (800 - 1200 mbar)
Temperature
Standard -7
Option -9
Characteristics
Conditions
Operational 1
min
max
71
min
–40
–40
–55
max
71
Unit
°C
TA
TC
TS
Ambient temperature
–25
–25
–40
Case temperature
95
95
Storage temperature
Non operational
100
100
1 See: Thermal Considerations
Table 7: MTBF and device hours
MTBF
Ground Fixed
Ground Mobile
Device Hours 1
MTBF acc. to MIL-HDBK-217D
TC = 40°C
130'000 h
TC = 70°C
58'000 h
TC = 40°C
36'000 h
TC = 70°C
17'000 h
3'900'000 h
1 Statistical values, based on an average of 4300 working hours per year and in general field use
REV. APR 26, 2004
Page 9 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Mechanical Data
European
Projection
The regulators are designed to be inserted into a 19" rack according to IEC 60297-3. Dimensions in mm.
168.5 ±0.5
09027
M2.5
2 TE
17.4 10.9
4.9
159.4
127
20 ±0.5
6 TE
Test sockets (option A)
Green LED output voltage indicator
Potentiometer (option P)
2
min. 5
ø5.2
ø3
M3; 4 mm deep
(for mounting screws)
0.9
32
1.5
173.7 ±0.5
11
6.4
(19.1)
20.32
4 TE
Mounting plane of
connector H11
Measuring point of
case temperature TC
Potentiometer (option D)
Fig. 9
Case L04, weight 550 g
Aluminium, black finish and
self cooling
Safety and Installation Instructions
Connector Pin Allocation
The connector pin allocation table defines the electrical
potentials and the physical pin position on the connector.
Pin no. 32 is the protective ground pin and is leading, i.e. at-
taching the female connector, this pin provides electrical
contact first. The modules should only be wired via the fe-
male connector H11 (according to DIN 41612) to ensure re-
quested safety!
Table 8: H11 connector pin allocation and designation
Electrical Determination
Type H11
Pin No. Design.
R-input (or inhibit input) 1
2
5
R (i)
D
Undervoltage monitor (Option D)
Output voltage (negative)
Output voltage (negative)
Output voltage(positive)
Output voltage (positive)
8
Go–
Go–
Vo+
Vo+
11
14
17
10007
Input voltage (negative)
Input voltage (negative)
Input voltage (positive)
Input voltage (positive)
Protective ground (leading pin)
20
23
26
29
32
Gi–
Gi–
Vi+
Vi+
32 29 26 23 20 17 14 11
8
5
2
1 R-input (output voltage control) not available with
option P (potentiometer) or option i (inhibit)
Fig. 10
View of male H11 connector
Protection Degree
The protection degree is IP 40 (equipped with option A:
IP 30 and with any potentiometer adjustable option: IP 20).
The protection degree applies only if the module is
plugged-in or the female connector is properly attached to
the module.
REV. APR 26, 2004
Page 10 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Isolation
Electric strength test voltage between input interconnected
with output against case: 1500 VDC, 1 s.
This test is performed in the factory as routine test in
accordance with EN 50116, IEC/EN 60950 and UL 1950
and should not be repeated in the field. Power-One will not
honour any guarantee claims resulting from electric
strength field tests.
Installation Instruction
Installation of the switching regulators must strictly follow
the national safety regulations in compliance with the enclo-
sure, mounting, creepage, clearance, casualty, markings
and segregation requirements of the end-use application.
Check for hazardous voltages before altering any connec-
tions. Connections can be made using fast-on or soldering
technique.
The input and the output circuit are not separated, i.e. the
negative path is internally interconnected!
The units should be connected to a secondary circuit.
Do not open the modules.
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also Safety of
operator accessible output circuit.
Standards and Approvals
All switching regulators are UL recognized according to
UL 1950, UL recognized for Canada to CAN/CSA C22.2
No. 234-M90.
The units have been evaluated for:
• Building in
• Operational insulation from input/output to case
• The use in a pollution degree 2 environment
• Connecting the input to a secondary circuit which is sub-
ject to a maximum transient rating of 1500 V
The switching regulators are subject to manufacturing sur-
veillance in accordance with the above mentioned UL and
CSA and with ISO 9001 standards.
Safety of Operator Accessible Output Circuit
If the output circuit of a switching regulator is operator ac-
cessible, it shall be an SELV circuit according to IEC/EN
60950 related safety standards.
The following table shows some possible installation con-
figurations, compliance with which causes the output circuit
of the switching regulator to be an SELV circuit according to
IEC/EN 60950 up to a configured nominal output voltage of
30 V, or 48 V if option C is fitted.
However, it is the sole responsibility of the installer or user
to assure the compliance with the relevant and applicable
safety regulations.
More information is given in Technical Information: Safety .
REV. APR 26, 2004
Page 11 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Table 9: Safety concept leading to an SELV output circuit
Conditions Front end
Switching regulator
Result
Supply
voltage
Minimum required grade
of isolation, to be provided DC output status of the front end
by the AC-DC front end,
including mains supplied from the
Maximum Minimum required safety
Measures to achieve the
specified safety status of the
output circuit
Safety status of
the switching
regulator output
circuit
voltage
output circuit
battery charger
front end 1
≤60 V
Battery
Double or Reinforced
SELV circuit
None
SELV circuit
supply,
>60 V
Earthed hazardous voltage Input fuse 3 and earthed 4
Earthed SELV
circuit
considered
as secon-
dary circuit
secondary circuit 2
or non user accessible case
Unearthed hazardous
Input fuse 3 and unearthed,
Unearthed SELV
circuit
voltage secondary circuit 5 non user accessible case 5
Hazardous voltage
secondary circuit
Input fuse 3 and earthed output Earthed SELV
circuit 4 and earthed 4 or non
user accessible case
circuit
Mains
≤250 V AC
Basic
≤60 V
Earthed SELV circuit 4
ELV circuit
None
Input fuse 3 and earthed output
circuit 4 and earthed 4 or non
user accessible case
>60 V
Hazardous voltage
secondary circuit
Double or reinforced
≤60 V
SELV circuit
None
SELV circuit
>60 V
Double or reinforced insu- Input fuse 3 and unearthed
lated unearthed hazardous and non user accessible case 5
voltage secondary circuit 5
1 The front end output voltage should match the specified input voltage range of the switching regulator.
2 The conductor to the Gi– terminal of the switching regulator has to be connected to earth by the installer according to the relevant
safety standard, e.g. IEC/EN 60950.
3 The installer shall provide an approved fuse (slow blow type with the lowest current rating suitable for the application, max. 12.5 A) in
a non-earthed input conductor directly at the input of the switching regulator. If Vo+ is earthed, insert the fuse in the Gi- line. For UL’s
purpose, the fuse needs to be UL-listed. If option C is fitted, a suitable fuse is already built-in in the Vi+ line.
4 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
5 Has to be insulated from earth by double or reinforced insulation according to the relevant safety standard, based on the maximum
output voltage from the front end (contrary to case marking: "This apparatus must be earthed", if applicable).
REV. APR 26, 2004
Page 12 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Description of Options
-9 Extended Temperature Range
L
Input Filter
The operational ambient temperature range is extended to
TA = –40 to 71°C. (TC = –40 to 95°C, TS = –55 to 100°C.)
Option L is recommended to reduce superimposed inter-
ference voltages and to prevent oscillations, if input lines
exceed approx. 5 m in total length. The fundamental wave
(approx. 120 kHz) of the reduced interference voltage be-
tween Vi+ and Gi– has, with an input line inductance of
P
Potentiometer
Option P excludes R function.The output voltage Vo can be
adjusted with a screwdriver in the range from 0.92 - 1.08 of
5 µH, a maximum magnitude of 4 mVrms
.
the nominal output voltage Vo nom
.
The input impedance of the switching regulator at 120 kHz
is about 3.5 ý. The harmonics are small in comparison with
the fundamental wave. See also: Electrical Input Data: RFI.
However, the minimum differential voltage DVi o min between
input and output voltages as specified in Electrical Input
Data should be maintained.
With option L, the maximum permissible additionally super-
imposed ripple ui of the input voltage (rectifier mode) at a
specified input frequency f i has the following values:
A
Test sockets
Test sockets (pin Ø = 2 mm) for measuring the output volt-
age are located at the front panel of the module.The output
voltage is measured internally directly at the connector
pins.
ui max = 10 Vpp at 100 Hz or Vpp = 1000 Hz/f i • 1V
06009
i
Inhibit for Remote On and Off
Vo+
i
Vi+
Gi–
Iinh
Note: With open i input, output is enabled (Vo = on)
Inhibit excludes R control function.
Vinh
The inhibit input allows the switching regulator output to be
disabled via a control signal. In systems with several units,
this feature can be used, for example, to control the activa-
tion sequence of the regulators by a logic signal (TTL, C-
MOS, etc.). An output voltage overshoot will not occur when
switching on or off.
Go–
Fig. 12
Definition of Iinh and Vinh
Iinh [mA]
06034
06001
5
Vo/Vo nom
1
4
3
0.1
0
V
V
t
tf
tr
2
1
Vo on
Vo off
Inhibit
1
0
–50
Vinh [V]
t
0
–20
–30
–10
0
–40
10 20 30 40 50
Fig. 11
Fig. 13
Typical inhibit current Iinh versus inhibit voltage Vinh
Output response as a function of inhibit signal
Table 10: Inhibit characteristics
Characteristics
Conditions
min
–50
+2.4
typ
max
+0.8
+50
Unit
Vinh
Inhibit input voltage to keep Vo = on
Vi min - Vi max
TC min - TC max
VDC
regulator output voltage -
Vo = off
t r
Switch-on time after inhibit command
Switch-off time after inhibit command
Input current when inhibited
Vi = Vi nom
RL = Vo nom /Io nom
5
ms
t f
10
10
Ii inh
Vi = Vi nom
mA
REV. APR 26, 2004
Page 13 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
C
Crowbar
This option is recommended to protect the load against
power supply malfunction, but it is not designed to sink ex-
ternal currents.
Note: As a central overvoltage protection device, the crow-
bar is usually connected to the external load via distributed
inductance of the lines. For this reason, the overvoltage at
the load can temporarily exceed the trigger voltage Vo c. De-
pending on the application, further decentralized over-
voltage protection elements may have to be used addition-
ally. For further information see: Technical Information: Ap-
plication Notes.
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 may be deacti-
vated by removal of the input voltage. In case of a switching
transistor defect, an internal fuse prevents excessive cur-
rent.
Table 11: Crowbar trigger levels
Characteristics
Conditions
12 V
15 V
24 V
36 V
48 V
Unit
min max
min max
min max
min max
min max
Vi min - Vi max
Io = 0 - Io nom
TC min - TC max
Vo c Trigger voltage
13.5
16
16.5
19
27
31
40
45.5
1.5
55
60
V
ts
Delay time
1.5
1.5
1.5
1.5
µs
D
Save Data Input Undervoltage Monitor
Note: Output instead of input undervoltage monitor is
The voltage Vt can be externally adjusted with a trim poten-
tiometer by means of a screwdriver.The hysteresis VH of Vt
is <2%. Terminal 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. Please note that the JFET be-
comes conductive when VD increases above 7 V approx.
available on request (Option D1).
Terminal D and Go– are connected to a normally conduct-
ing field effect transistor (JFET).The switching characteris-
tics of the option D output are shown in fig.: Definition of Vt
and VH. A 0.5 W Zener diode provides protection against
overvoltages.
11026
VH
VD
VD high
11025
10 kΩ
ID
D
8.2 V
Go –
Vi +
+5 V
JFET
Vt
VD
100 pF
VD low
Gi –
Vi
Vt
Fig. 14
Test circuit with definition of voltage VD and current ID
Fig. 15
Definition of Vt and VH
REV. APR 26, 2004
Page 14 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
Data
Table 12: Option D data
Characteristics
Conditions
min
typ
max
0.8
Unit
VD low
VD high
tlow min
tD f
Voltage - Terminal D at low impedance
Vi < Vt, ID - 2.5 mA
Vi > Vt + VH, ID > 25 µA
V
Voltage - Terminal D at high impedance
Minimum duration VD low
4.75
30
1
ms
µs
Response time to VD low
ID max
Maximum current - Terminal D
20
mA
Application examples:
a) The signal VD can be utilized in battery powered systems to provide a warning in case of low batteries.
b) In case of power failure, the signal can serve to initiate data save routines.
Accessories
A variety of electrical and mechanical accessories are
available including:
– Front panels for 19" rack mounting, Schroff and Intermas
systems.
– Mating H11 connectors with screw, solder, fast-on or
press-fit terminals.
For more detailed information please refer to: Accessories
on the Power-One homepage.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support
systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the
respective divisional president of Power-One, Inc.
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.
REV. APR 26, 2004
Page 15 of 16
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
EC Declaration of Conformity
We
Power-One AG
Ackerstrasse 56 CH-8610 Uster
declare under our sole responsibility that all PSx Series switching regulators carrying the
CE-mark are in conformity with the provisions of the Low Voltage Directive (LVD) 73/23/
EEC of the European Communities.
Conformity with the directive is presumed by conformity wih the following harmonized
standards:
• EN 61204: 1995 (= IEC 61204: 1993, modified)
Low-voltage power supply devices, d.c. output - Perfomance characteristics
and safety requirements
• EN 60950: 1992 + A1: 1993 + A2 (= IEC 950 second edition 1991 + A1: 1992 +
A2: 1993)
Safety of information technology equipment
The installation instructions given in the corresponding data sheet describe correct installation
leading to the presumption of conformity of the end product with the LVD. All PSx Series
Switching Regulators are components, intended exclusively for inclusion within other
equipment by an industrial assembly operation or by professional installers. They must not
be operated as stand alone products.
Hence conformity with the Electromagnetic Compatibility Directive 89/336/EEC (EMC
Directive) needs not to be declared. Nevertheless, guidance is provided in most product
application notes on how conformity of the end product with the indicated EMC standards
under the responsibility of the installer can be achieved, from which conformity with the
EMC directive can be presumed.
Uster, 14 Oct. 2003
Power-One AG
Rolf Baldauf
Johann Milavec
Director Engineering
Director Projects and IP
REV. APR 26, 2004
Page 16 of 16
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