PSB125-9LIRC [BEL]
DC/DC CONVERTER 12V 60W;型号: | PSB125-9LIRC |
厂家: | BEL FUSE INC. |
描述: | DC/DC CONVERTER 12V 60W |
文件: | 总13页 (文件大小:220K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Input voltage up to 80 V DC
Single output of 5.1 to 36V DC
No input to output isolation
• High efficiency up to 96%
• Wide input voltage range
• Low input to output differential voltage
• Very good dynamic properties
• Input undervoltage lock-out
• External output voltage adjustment and inhibit
• 2 temperature ranges
32
1.3"
69
2.7"
• Continuous no-load and short-circuit proof
• No derating
106
4.2"
Safety according to IEC/EN 60950
Summary
ules with input voltages up to 80 V are specially designed
for secondary switched and battery driven applications.The
case design allows operation at nominal load up to 71°C
without additional cooling.
The PSB 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 range, high
reliability, low ripple and excellent dynamic response. Mod-
Model Selection and Key Data
Table 1: Type survey
Output
voltage
Vo nom [V]
Output
current
Io nom [A]
Input
Input
Efficiency 2
Type
designation
Options
Superseded
old type
(phased-out)
voltage range voltage
Vi [V] 1
7 – 40
Vi nom [V]
h
min [%] htyp [%]
5.1
5.1
12
15
24
36
7
6
5
5
5
5
20
40
40
40
50
60
83
79
89
90
93
95
84
81
90
92
95
96
PSB 5A7-7iR
PSB 5A6-7iR
PSB 125-7iR
PSB 155-7iR
PSB 245-7iR
PSB 365-7iR
-9, L, P, C
PSR 57-7
PSR 55-7
PSR 124-7
PSR 154-7
PSR 244-7
PSR 364-7
8 – 80
15 – 80
19 – 80
29 – 80
42 – 80
1 See: Electrical Input Data: DVio min (min. differential voltage Vi – Vo).
2 Efficiency at Vi nom and Io nom
.
Non standard input/output configurations or special custom adaptions are available on request.
See also: Commercial Information: Inquiry Form for Customized Power Supply.
Table of Contents
Page
Page
Summary.......................................................................... 1
Model Selection and Key Data........................................ 1
Part Number Description ................................................. 2
Functional Description ..................................................... 2
Electrical Input Data......................................................... 3
Electrical Output Data ...................................................... 4
Auxiliary Functions........................................................... 6
Electromagnetic Compatibility (EMC) .............................. 7
Immunity to Environmental Conditions ............................ 8
Mechanical Data .............................................................. 9
Safety and Installation Instructions ................................ 10
Description of Options ................................................... 11
Accessories ................................................................... 12
EC Declaration of Conformity ........................................ 13
REV. OCT 17, 2003
Page 1 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Part Number Description
PSB 12 5 -7 L i R P C
Positive switching regulator in case B02 ................... PSB
Nominal output voltage in volt (5A for 5.1 V)........ 5A, ...36
Nominal output current in ampere .......................... 5, 6, 7
Operational ambient temperature range TA
–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
1 Feature R excludes option P and vice versa.
Example: PSB 125-7LiPC = A positive switching regulator with a 12 V, 5 A output, ambient temperature range of
–25 to 71°C, input filter, inhibit input, potentiometer and thyristor crowbar.
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 choke to the load
and back through the freewheeling diode. Regulation is
accomplished by varying the on/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 transformer with rectifier). To optimise
customer’s needs, additional options and accessories are
available.
03011
Io
I i
Vo+
Vi+
Option C
i
Control circuit
Vi
Vo
Option C
R
G
Go–
Gi–
Option P
Fig. 1
Block diagram
REV. OCT 17, 2003
Page 2 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Electrical Input Data
General Conditions: TA = 25°C, unless TC is specified
Table 2a: Input data
Input
PSB 5A7
min typ
PSB 5A6
typ max
PSB 125
typ max
Characteristics
Conditions
max
40
min
min
Unit
Vi
Operating input voltage
Io = 0 – Io nom
TC min – TC max
7
8
80
15
80
3
V DC
DVio min Min. diff. voltage (Vi – Vo) 1
1.9
2.9
Vi UVL Undervoltage lock-out
6.3
7.3
7.3
Ii NL
Iinr p
tinr r
No load input current
Io = 0, Vi min – Vi max
45
40
35
mA
A
Peak value of inrush current Vi nom
75
5
150
5
150
5
without option L
Rise time
µs
tinr h
Iinr p
tinr r
Time to half-value
40
40
40
Peak value of inrush current Vi nom
100
15
180
15
180
15
A
with option L
Rise time
µs
tinr h
ui RFI
Time to half-value
100
100
100
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
PSB 155
PSB 245
PSB 365
Characteristics
Conditions
min typ
max
80
min typ max
min typ max Unit
Vi
Operating input voltage
Io = 0 – Io nom
TC min – TC max
19
29
80
5
42
80
6 1
V DC
1
DVio min Min. diff. voltage Vi – Vo
4
Vi o
Ii 0
Undervoltage lock-out
No load input current
7.3
12
19
Io = 0, Vi min – Vi max
35
35
40
mA
A
Iinr p
tinr r
tinr h
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Vi nom
150
5
150
5
150
5
without option L
Rise time
µs
Time to half-value
40
40
40
Peak value of inrush current Vi nom
180
15
180
15
180
15
A
with option L
Rise time
µs
Time to half-value
100
100
100
Input RFI level, EN 55011/22 Vi nom, Io nom
B
B
B
0.15 – 30 MHz
with option L
1 The minimum differential voltage DVio min between input and output increases linearly by 0 to 1 V between TA = 46°C and 71°C
(TC = 70°C and 95°C)
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. OCT 17, 2003
Page 3 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Electrical Output Data
General Conditions:
– TA = 25°C, unless TC is specified
– R pin not connected, with opt. P, Vo adjusted to Vo nom at Io nom
Table 3a: Output data
Output
PSB 5A7
PSB 5A6
PSB 125
typ max
Characteristics
Conditions
min typ
max
5.13
7.0
min
5.07
0
typ max
min
Unit
V
Vo
Io
Output voltage
Vi nom, Io nom
5.07
0
5.13 11.93
12.07
5.0
Output current 1
Vi min – Vi max
TC min – TC max
6.0
7.8
0
A
IoL
Output current limitation
7.0
9.1
6.0
5.0
6.5
1
response
uo
Output
voltage
noise
Switching freq. Vi nom, Io nom
IEC/EN 61204 2
15
19
25
29
15
19
35
39
25
29
45
49
mVpp
mV
Total
BW = 20 MHz
Static line regulation
Static load regulation
Vi min – Vi max, Io nom
Vi nom, Io = 0 – Io nom
25
10
45
25
25
10
45
25
25
20
50
35
Vo d
td
Dynamic
load
regulation
Voltage deviat. Vi nom
120
40
100
50
100
60
I
o nom ↔ 1/
Io nom
3
Recovery time
µs
IEC/EN 61204 2
aVo
Temperature coefficient
DVo/DTC (TC min – TC max
Vi min – Vi max
Io = 0 – Io nom
±1
±1
±2
mV/K
)
±0.02
±0.02
±0.02 %/K
Table 3b: Output data
Output
PSB 155
PSB 245
min typ max
24.14 35.78
PSB 365
Characteristics
Conditions
min typ
max
min typ max Unit
Vo
Io
Output voltage
Vi nom, Io nom
14.91
0
15.09 23.86
36.22
5.0
V
A
Output current 1
Vi min – Vi max
TC min – TC max
5.0
6.5
0
5.0
6.5
0
IoL
Output current limitation
5.0
5.0
5.0
6.5
1
response
uo
Output
voltage
noise
Switching freq. Vi nom, Io nom
40
44
70
74
45
50
120
125
70
75
180
185
mVpp
mV
IEC/EN 61204 2
BW = 20 MHz
Total
Static line regulation
Static load regulation
Vi min – Vi max, Io nom
Vi nom, Io = 0 – Io nom
40
30
75
65
70
70
150
120
100
120
180
100
200
160
Vo d
td
Dynamic
load
regulation
Voltage deviat. Vi nom
o nom ↔ 1/
Io nom
100
60
120
80
I
3
Recovery time
µs
IEC/EN 61204 2
αVo
Temperature coefficient
∆Vo/∆TC (TC min-TC max
Vi min – Vi max
±3
±5
±8
mV/K
Io
Io = 0 –
)
nom
±0.02
±0.02
±0.02 %/K
1 See also: Thermal Considerations.
2 See: Technical Information: Measuring and Testing.
REV. OCT 17, 2003
Page 4 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
05010
Vo
Vod
DVo I
DVo I
Vod
td
td
t
t
I /I
o
o nom
1
Fig. 3
0
Dynamic load regulation.
≥10 µs
≥10 µs
Thermal Considerations
Parallel and Series Connection
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).
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.
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.
Under practical operating conditions, the ambient tem-
perature TA may exceed 71°C, provided additional meas-
ures (heat sink, fan, etc.) are taken to ensure that the case
temperature TC does not exceed its maximum value of
95°C.
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!
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
Short Circuit Behaviour
Forced cooling
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.
1.0
0.9
0.8
Convection cooling
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Vo/Vo nom
TC max
I
05043
1.2
1.0
0.8
Io L
0.6
T [˚C]
A
T
50
60
70
80
90
100
A min
0.4
0.2
Fig. 4
Output current derating versus temperature
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
Output Protection
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).
REV. OCT 17, 2003
Page 5 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Auxiliary Functions
06009
i Inhibit for Remote On and Off
Vo+
i
Vi+
Gi–
Iinh
Note: With open i-input, output is enabled (Vo = on)
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.
Vinh
Go–
Fig. 7
Iinh [mA]
Definition of Iinh and Vinh
06034
5
06001
Vo/Vo nom
1
4
3
V
V
0.1
t
0
2
1
tf
tr
Vo on
Vo off
Inhibit
1
0
–50
Vinh [V]
–20
–30
–10
0
–40
10 20 30 40 50
t
0
Fig. 6
Fig. 8
Typical inhibit current Iinh versus inhibit voltage Vinh
Output response as a function of inhibit signal
Table 4: Inhibit characteristics
Characteristics
Conditions
min
–50
typ
max
+0.8
+50
Unit
Vinh
Inhibit input voltage to keep Vo = on
Vi min – Vi max
TC min – TC max
V DC
regulator output voltage-
Vo = off
+2.4
tr
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
R Control for Output Voltage Adjustment
Caution: To prevent damage Vext should not exceed
20 V, nor be negative and R2 should never be less than
47 kΩ.
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% Vo nom.The minimum differen-
tial voltage DVio min between input and output (see: Electri-
cal Input Data) should be maintained. Undervoltage lock-
out = Minimum input voltage.
Vo+
06036
Vref
R2
R1
4000 Ω
+
–
Vo+
R
G
06035
Vref
4000 Ω
R
+
–
Go–
+
Vext
Fig. 10
Voltage adjustment with external resistor R1 or R2
G
Go–
Fig. 9
Voltage adjustment with Vext between R and G (Go–)
a) Vo = 0-108% Vo nom, using Vext between R and G (Go–)
Vo
Vext
V
ext ≈ 2.5 V • –––––
Vo ≈ Vo nom • –––––
Vo nom
2.5 V
REV. OCT 17, 2003
Page 6 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
LED Output Voltage Indicator
b) Vo = 0 –100% Vo nom, using R1 between R and G (Go–):
A yellow output indicator LED shines when the output volt-
age is higher than approx. 3 V.
4000 Ω • Vo
Vo nom • R1
Vo ≈ –––––––––––
R1 ≈ –––––––––––
Vo nom –Vo
R1 + 4000 Ω
c) Vo = 100% – 108% Vo nom, 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
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
General condition: Case not earthed.
Table 5: Immunity type tests
Phenomenon Standard 1 Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
Per-
3
oper. form.
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
3
2
contact discharge 6000 Vp
to case
330 Ω
10 positive and
10 negative
discharges
yes
B4 5
Electromagnetic IEC/EN
field
antenna
i/c, +i/–i
3 V/m
AM 80%
1 kHz
80 – 1000 MHz
yes
yes
A
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
3
4
2000 Vp bursts of 5/50 ns 50 Ω
60s positive
60s negative
bursts per
A 4
5 kHz rep. rate
transients with
15 ms burst
4000 Vp
B4 5
coupling mode
duration and a
300 ms period
Surge
IEC/EN
61000-4-5
2
3
i/c
1000 Vp
500 Vp
1.2/50 µs
12 Ω
2 Ω
5 pos. and 5 neg.
surges per
coupling mode
yes
yes
A 4
A
+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
(10 VAC)
1 For related and previous standards see: Technical Information: Safety & 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.
REV. OCT 17, 2003
Page 7 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Electromagnetic Emission
For emission levels refer to: Electrical Input Data.
[dBµV]
90
07008
80
EN 55022 A
EN 55022 B
70
60
50
40
30
20
10
0
MHz
Fig. 11
Typical disturbance voltage (quasi-peak) at the input ac-
cording to EN 55011/22 measured at Vi nom and Io nom
.
Immunity to Environmental Conditions
Table 6: Mechanical stress
Test Method
Standard
Test Conditions
Temperature:
Status
Ca
Ea
Eb
Fc
Damp heat
steady state
IEC/DIN IEC 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 EN 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 EN 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 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)
10-2000 Hz
Unit
operating
(sinusoidal)
Frequency (1 Oct/min):
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
REV. OCT 17, 2003
Page 8 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Table 7: Temperature specifications, valid for 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
TA
TC
TS
Ambient temperature
–25
–25
–40
°C
Case temperature
95
95
Storage temperature
Non operational
100
100
1 See: Thermal Considerations
Table 8: MTBF and device hours
MTBF
Ground Benign
TC = 40°C
Ground Fixed
Ground Mobile
TC = 50°C
Device Hours 1
MTBF acc. to MIL-HDBK-217F
TC = 40°C
207 000 h
TC = 70°C
96 000 h
624 000
46 000 h
13 000 000 h
1 Statistical values, based on an average of 4300 working hours per year and in general field use
Mechanical Data
Dimensions in mm. Tolerances ±0.3 mm unless otherwise specified.
European
Projection
09013
Yellow output voltage
LED indicator
Potentiometer
(option P)
V
i
+
G
i
–
G
o
–
Vo+
U
o
i
U
G
R
o
106 ±1
101(for M3 mounting screws)
5 ±0.5
Measuring point of
case temperature TC
Fig. 12
Case B02, weight 230 g
Aluminium,
(4.7)
35
(4.7)
10 10 (13.5)
10.6
20
12.5 ±1
black finish and self cooling
REV. OCT 17, 2003
Page 9 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
The units have been evaluated for:
• Building in,
Safety and Installation Instructions
• Operational insulation from input to output and input/out-
put to case,
• The use in an overvoltage category II environment,
• The use in a pollution degree 2 environment.
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.
The switching regulators are subject to manufacturing sur-
veillance in accordance with the above mentioned UL and
CSA and with ISO 9001 standards.
Check for hazardous voltages before altering any connec-
tions. Connections can be made using fast-on or soldering
technique.
Isolation
The input and the output circuit are not separated, i.e. the
negative path is internally interconnected!
Electric strength test voltage between input interconnected
with output and case: 750 VDC, 1 s.
The units should be connected to a secondary circuit.
Do not open the module.
This test is performed as factory test in accordance with
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.
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.
Safety of Operator Accessible Output Circuit
Cleaning Agents
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
In order to avoid possible damage, any penetration of
cleaning fluids is to be prevented, since the power supplies
are not hermetically sealed.
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 nominal output voltage of 30 V, or
48 V if option C is fitted.
Protection Degree
The protection degree is IP 20.
Standards and Approvals
However, it is the sole responsibility of the installer or user
to assure the compliance with the relevant and applicable
safety regulations.
All switching regulators are UL recognized according to UL
1950, UL 1012 and EN 60950 and UL recognized for
Canada to CAN/CSA C22.2 No. 234-M90.
More information is given in: Technical Information: Safety
& EMC.
REV. OCT 17, 2003
Page 10 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Table 9: Insulation concept leading to an SELV output circuit
Conditions Front end
Switching regulator
Result
Supply
voltage
Minimum required grade Maximum Minimum required safety Measures to achieve the
Safety status of
the switching
regulator output
circuit
of isolation, to be provided DC output status of the front end
specified safety status of the
output circuit
by the AC-DC front end,
voltage
output circuit
including mains supplied from the
battery charger
front end1
≤60 V
Battery
Double or Reinforced
SELV circuit
None
SELV circuit
supply,
>60 V
Earthed hazardous voltage Input fuse 3 and non
Earthed SELV
circuit
considered
as secon-
dary circuit
2
5
secondary circuit
Unearthed hazardous
voltage secondary circuit 5 non accessible case 5
accessible case
Input fuse 3 and unearthed,
Unearthed SELV
circuit
Hazardous voltage
secondary circuit
Input fuse 3 and earthed output Earthed SELV
circuit 4 and non accessible
case 5
circuit
Mains
-250 V AC
Basic
≤60 V
Earthed SELV circuit 4
ELV circuit
None
Input fuse 3 and earthed output
circuit 4 and non accessbile
case 5
>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 accessible case 5
voltage secondary circuit 5
Unearthed SELV
circuit
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.
Description of Options
-9 Extended Temperature Range
be achieved by insertion of a capacitor across the input
(e.g. plastic foil between Vi+ and Gi–).
The operational ambient temperature range is extended to
TA = –40 to 71°C. (TC = –40 to 95°C, TS = –55 to 100°C.)
The input impedance of the switching regulator at 120 kHz
is about 17 Ω. The harmonics are small in comparison with
the fundamental wave. See also Electrical Input Data: RFI.
P
Potentiometer
Option P excludes the R-function. The output voltage Vo
can be adjusted with screwdriver in the range
92 - 108% Vo nom
With option L, the maximum permissible additionally su-
perimposed ripple ui of the input voltage (rectifier mode) at
a specified input frequency fi has the following values:
a
.
However, the minimum differential voltage DVi o min be-
tween input and output voltages as specified in Electrical
Input Data should be maintained.
Units with max input voltage 40 V:
ui max = 12 Vpp at 100 Hz or Vpp = 1200 Hz/fi • 1V
Units with max input voltage 80 V:
ui max = 22 Vpp at 100 Hz or Vpp = 2200 Hz/fi • 1V
L
Input Filter
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
5 µH, a maximum magnitude of 60 mVAC. A reduction can
REV. OCT 17, 2003
Page 11 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
C
Thyristor 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 10: Crowbar trigger levels
Characteristics
Conditions
5.1 V
12 V
15 V
24 V
36 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
5.8
6.8
1.5
13.5
16
16.5 19
1.5
27
31
40 45.5
1.5
V
ts
Delay time
1.5
1.5
µs
Accessories
A variety of electrical and mechanical accessories are
available including:
– PCB-tags and isolation pads for easy and safe PCB-
mounting.
– Ring core chockes for ripple and interference reduction.
For more detailed information please refer to: Accessory
Products 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. OCT 17, 2003
Page 12 of 13
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
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. OCT 17, 2003
Page 13 of 13
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