PSS1214-2B [BEL]
DC-DC Regulated Power Supply Module, 1 Output, METAL, CASE S01, MODULE;
| 型号： | PSS1214-2B |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, METAL, CASE S01, MODULE |
| 文件： | 总15页 (文件大小：311K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Input voltage up to 60 VDC
Single output of 5.1 to 24VDC
No input to output isolation
• High efficiency up to 94%
• Wide input voltage range
• Low input-to-output differential voltage
• Very good dynamic properties
• Input undervoltage lock-out
• Active current sharing for parallel operation
• Output voltage adjustment, inhibit and sense lines
• Fast dynamic response
111
4.4"
3 U
60
2.4"
12 TE
168
6.6"
• Continuous no-load and short-circuit proof
• No derating
Safety according to IEC/EN 60950, UL 1950
Summary
The PSS/PSK series of positive switching regulators is de-
signed as power supply modules for electronic systems.
Their major advantages include a high level of efficiency
that remains virtually constant over the entire input range,
high reliability, low ripple and excellent dynamic response.
Modules with input voltages up to 60 V are specially desig-
ned for secondary switched and battery-driven applica-
tions. The standard case design with heat sink allows op-
eration at nominal load up to 50°C without additional cool-
ing, suitable for 19" rack or chassis mounting.
111
4.4"
3 U
Replacing the heat sink by an optional cooling plate B or B1,
allows chassis or wall mounting on top of a metal surface,
acting as heat sink.
80
3.2"
16 TE
168
6.6"
Connector type: H15 (according to DIN 41612).
Table of Contents
Page
Page
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key and Product Marking ........................................ 2
Functional Description ..................................................... 3
Electrical Input Data ......................................................... 3
Electrical Output Data ...................................................... 4
Auxiliary Functions ........................................................... 6
Electromagnetic Compatibility (EMC) .............................. 8
Immunity to Environmental Conditions ............................ 8
Mechanical Data .............................................................. 9
Safety and Installation Instructions ................................ 11
Description of Options ................................................... 13
Accessories ................................................................... 14
EC-Declaration of conformity ......................................... 15
REV. FEB 15, 2004
Page 1 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
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
at Vi nom, Io nom
Type
designation
Options
h
min [%]
5.1
5.1
14
18
8...40
8...40
20
20
83
82
PSS 5A14-2
PSK 5A18-2
B
B1
12
12
14
18
15...40
15...40
30
30
90
90
PSS 1214-2
PSK 1218-2
15
15
14
18
19...40
19...40
30
30
90
90
PSS 1214-2
PSK 1218-2
24
24
14
18
29...60
29...60
40
40
94
94
PSS 2414-2
PSK 2418-2
1 See also: Electrical Input Data: DVio min
.
Part Number Description and Product Marking
Type Key
PSK 12 18 -2 B
Positive switching regulator in case S01, K01 - PSS, PSK
Nominal output voltage in volt (5A for 5.1 V)......... 5A,...24
Nominal output current in ampere .......................... 14, 18
Operational ambient temperature range –10 to 50°C... -2
Options:
Cooling plate large / small .................. B / B1
Example: PSK 1218-2B = A positive switching regulator with a 12 V, 18 A output, ambient temperature range of
–10 to 50°C and large cooling plate option B.
Note: All units features the following auxiliary functions which are not shown in the type designation: Input filter, inhibit, R
control, sense lines and current sharing.
Produkt Marking
Basic type designation, applicable safety approvals and recognition marks, warnings, pin allocation, Power-One patents
and company logo.
Specific type designation, input voltage range, nominal output voltage and current, protection degree, batch no., serial no.
and data code including production site, modification status and date of production.
REV. FEB 15, 2004
Page 2 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Functional Description
The switching regulators are designed using the buck con-
verter 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 chocke
to the load and back through the freewheeling diode.
Regulation is accomplished by varying on/off duty cycle.
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.
03020
Io
4
Vo+
I i
6
30
Vi+
32
20 S+
22
CS
Control
circuit
Vi
Vo
14
16
18
i
R
S–
26
Gi–
28
8
Go–
10
24
Fig. 1
Block diagram
Electrical Input Data
General Conditions: TA = 25°C, unless TC is specified
Table 2: Input data
Input
PSS 5A14
PSK 5A18
PSS 1214
PSK 1218
PSS 1214 1
PSK 1218 1
PSS 2414
PSK 2418
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
Vi
Operating input voltage
Io = 0 – Io nom
TC min – TC max
8
40
15
40
3
19
40
4
29
60
5
VDC
DVio min Min. diff. voltage Vi – Vo
2.9
Vi o
Ii 0
Undervoltage lock-out
No load input current
7.3
7.3
7.3
12
Io = 0, Vi min –Vi max
50
A
50
A
50
A
50
A
mA
ui RFI
Input RFI level, EN 55011/22 Vi nom, Io nom
0.15...30 MHz
dB(µV)
1 Output set to 15 V at R control input, see: Auxiliary Functions.
Input Filter and Fuse
Inrush Current
An input filter and a fuse are incorporated in all modules as
standard. The filter reduces emitted electrical noise and
prevents oscillations caused by the negative input imped-
ance characteristic of a switched mode regulator.The input
fuse protects against severe defects.
The inrush current can reach very high values depending
on the source and input line conditions. The inrush current
into a switching regulator is limited by parasitic components
of the voltage source and power supply input only. This in-
put presents a very low impedance to such currents and
when driven from a low impedance source, e.g. a battery,
the inrush current can peak at several orders of magnitude
above the continuous DC input current.To protect series el-
ements such as switches or circuit brakers and rectifiers the
use of additional external current limitation device is recom-
mended.
The maximum permissible additionally superimposed rip-
ple vi of the input voltage (rectifier mode) at a specified in-
put frequency fi has the following values:
vi max = 10 Vpp at 100 Hz, or Vpp = 1000 Hz/fi • 1 V
REV. FEB 15, 2004
Page 3 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Electrical Output Data
General Conditions:
– TA = 25°C, unless TC is specified
– With R control output voltage Vo = Vo nom at Io nom
– Sense lines connected at female connector
Table 3a: Output data PSS
Output
PSS 5A14
PSS 1214
PSS 1214 1
PSS 2414
Characteristics
Conditions
Vi nom, Io nom
Vi min – Vi max
min typ max min typ max min typ max min typ max Unit
Vo
Io
Output voltage
5.05
0
5.15 11.60
14.0
12.40 14.50
14.0
15.50 23.30
14.0
24.70
14.0
17.5
V
A
Output current 2
0
0
0
TC min TC max
–
IoL
Output current limitation
response
14.0
17.5 14.0
17.5 14.0
17.5 14.0
vo
Output
voltage
noise
Switching freq. Vi nom, Io nom
IEC/EN 61204 3
55
60
150
160
200
210
300 mVpp
310
Total
BW = 20 MHz
DVo U Static line regulation
Vi min –Vi max, Io nom
Vi nom, Io = 0 – Io nom
100
100
240
120
300
150
480
240
mV
DVo l
vo d
td
Static load regulation
Dynamic
load
Voltage deviat. Vi nom
150
40
360
60
450
60
700
60
1
Io nom ↔ /
3
Io nom
Recovery time
µs
regulation
IEC/EN 61204
aUo
Temperature coefficient
DVo/DTC (TC min – TC max
Vi min – Vi max
Io = 0 – Io nom
±1
±2
±3
±5 mV/K
±0.02 %/K
)
±0.02
±0.02
±0.02
Table 3b: Output data PSK
Output
PSK 5A18
PSK 1218
PSK 1218 1
PSK 2418
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
Vo
Io
Output voltage
Output current 2
Vi nom, Io nom
5.05
0
5.15 11.60
18.0
12.40 14.50
18.0
15.50 23.30
18.0
24.70
18.0
22.5
V
A
Vi min – Vi max
TC min – TC max
0
0
0
IoL
Output current limitation
response
18.0
22.5 18.0
22.5 18.0
22.5 18.0
vo
Output
voltage
noise
Switching freq. Vi nom, Io nom
IEC/EN 61204 3
55
60
150
160
200
210
300 mVpp
310
Total
BW = 20 MHz
DVo U Static line regulation
Vi min – Vi max, Io nom
Vi nom, Io = 0 – Io nom
100
100
240
120
300
150
480
240
mV
DVo l
vo d
td
Static load regulation
Dynamic
load
Voltage deviat. Vi nom
150
40
360
60
450
60
700
60
1
Io nom ↔ /
3
Io nom
Recovery time
µs
regulation
IEC/EN 61204
aUo
Temperature coefficient
DVo/DTC (TC min – TC max
Vi min – Vi max
Io = 0 – Io nom
±1
±2
±3
±5 mV/K
±0.02 %/K
)
±0.02
±0.02
±0.02
1 Output set to 15 V at R control input, see: Auxiliary Functions.
2 See also: Thermal Considerations.
REV. FEB 15, 2004
Page 4 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
05010
Vo
Overtemperature Protection
Vod
DVo I
DVo I
The unit is self-protecting by an internal temperature moni-
tor, which inhibits the output above TC max.The output is au-
tomatically enabled again after temperature has dropped
Vod
below TC max
.
td
td
t
t
Output Protection
I /I
o
o nom
A voltage suppressor diode which in worst case conditions
fails into a short circuit, protects the output against an inter-
nally generated overvoltage. Such an overvoltage could oc-
cur due to a failure of either the control circuit or the switch-
ing transistor.The output protection is not designed to with-
stand externally applied overvoltages. The user should en-
sure that systems with Power-One power supplies, in the
event of a failure, do not result in an unsafe condition (fail-
safe).
1
0
≥10 µs
≥10 µs
Fig. 2
Dynamic load regulation.
Thermal Considerations
When a switching regulator is located in free, quasi-station-
ary air (convection cooling) at a temperature TA = 50°C and
is operated at its nominal output current Io nom, the case
temperature TC will be about 80°C after the warm-up
phase, measured at the Measuring point of case tempera-
ture TC (see: Mechanical Data).
Parallel and Series Connection
Outputs of equal nominal voltage can be parallel-con-
nected. Use the current sharing feature (CS) for even distri-
bution of the output current. See also: Auxiliary Functions.
Outputs can be series-connected with any other module. In
series-connection the maximum output current is limited by
the lowest current limitation. Electrically isolated source
voltages are needed for each module!
Under practical operating conditions, the ambient tem-
perature TA may exceed 50°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
80°C.
Short Circuit Behaviour
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.
Example: Sufficient forced cooling allows TA max = 65°C. A
simple check of the case temperature TC (TC ≤80°C) at full
load ensures correct operation of the system.
Io/Io nom
Vo/Vo nom
Forced cooling
I
05038
1.2
1.0
1.0
0.9
0.8
0.8
Io L
0.7
Convection cooling
0.6
0.6
0.4
0.2
TC max
0.5
0.4
0.3
0.2
0.1
Io/Io nom
0
Fig. 4
Overload, short-circuit behaviour Vo versus Io.
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
TA [ C]
TA min
Fig. 3
Output current derating versus temperature.
40
60
70
80
50
REV. FEB 15, 2004
Page 5 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Auxiliary Functions
S
Sense Lines
Note: Sense lines should always be connected! It is rec-
ommended to connect the sense lines directly at the female
connector. See also: Technical Information.
Table 4: Maximum allowed voltage compensation
Nominal output Total voltage difference Voltage difference
voltage
between both sense lines
and their respective output
between
Go– and S–
This feature enables compensation of voltage drop across
the connector contacts and the load lines.In case the sense
lines are connected at the load rather than directly at the
connector, the user must ensure that Vo max (between Vo+
and Go– set at R control input) is not exceeded.
5.1 V
<0.5 V
<1.0 V
<0.25 V
<0.25 V
12, 15, 24 V
06046
Vi+
i
Applying generously dimensioned cross-section load leads
avoids troublesome voltage drop.To minimize noise pick-up
wire sense lines in parallel or twisted.
Vo+
S+
Load
R
S–
To ensure correct operation, both sense lines must be con-
nected to their respective power output potential. The volt-
age difference between any sense line and its respective
power output pin (as measured on the connector) should
not exceed the values given in the following table.
CS
Gi–
Go–
Fig. 5
Sense lines connection
i Inhibit (Remote On / Off)
Note: With open i input, output is enabled (Vo = on)
06047
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. The inhibit characteristics are refer-
enced to the S– remote sense terminal.
S+
i
Vi+
Gi–
Iinh
Vinh
S–
Fig. 7
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. 6
Fig. 8
Typical inhibit current Iinh versus inhibit voltage Vinh
Output response as a function of inhibit signal
Table 5: Inhibit characteristics
Characteristics
Conditions
Inhibit input voltage to keep Vo = on Vi min – Vi max
regulator output voltage... TC min – TC max
min typ max
Unit
Vinh
–50
+0.8
+50
VDC
Vo = off
Switch-on time after inhibit command Vi = Vi nom
+2.4
tr
100
5
ms
mA
RL =Vo nom /Io nom
t f
Switch-off time after inhibit command
Input current when inhibited
Ii inh
Vi = Vi nom
25
REV. FEB 15, 2004
Page 6 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
R Control for Output Voltage Adjustment
Note: With open R input, Vo ≈ Vo nom
.
The output voltage Vo can either be adjusted with an exter-
nal reference voltage (Vext) or with an external resistor (R1
or R2).The adjustment range is 0 - Vo max.The minimum dif-
ferential voltage DVio min between input and output (see:
Electrical Input Data) should be maintained. Undervoltage
lock-out = minimum input voltage.
S+
06049
Uref
R2
R1
4000 Ω
+
–
R
S+
S–
06048
Vref
4000 Ω
R
Fig. 10
+
–
+
Voltage adjustment with external resistor R1 or R2
Vext
S–
b) Vo = 0 - 100% Vo nom, using R1 between R and S–:
4000 Ω • Vo
Vo nom • R1
Vo ≈ –––––––––––
Fig. 9
R1 ≈ –––––––––––
Vo nom –Vo
R1 + 4000 Ω
Voltage adjustment with Vext between R and S–
c) Vo = Vo nom - Vo max, using R2 between R and S+:
a) Vo = 0 - Vo max, using Vext between R and S–:
4000 Ω • Vo • (Vo nom – 2.5 V)
R2 ≈ ––––––––––––––––––––––––
Vo
Vext
2.5 V • (Vo – Vo nom
)
Vext ≈ 2.5 V • –––––
Vo ≈ Vo nom • –––––
Vo nom
2.5 V
Vo nom • 2.5 V • R2
Caution: To prevent damage Vext should not exceed
20 V, nor be negative, and R2 should never be less than
47 kΩ.
Vo ≈ ––––––––––––––––––––––––––––––––
2.5 V • (R2 + 4000 Ω) – Vo nom • 4000 Ω
Table 6: Maximum adjustable output voltage
PSS 5A14
PSS 1214
PSK 1218
PSS 2414
PSK 2418
PSK 5A18
min typ max
5.6
Characteristics
Conditions
min typ max
min typ max
Unit
Vo max Maximum adjustable
output at R control input
Vi nom, Io nom
16.0
26.0
V
CS Current Sharing
For parallel operation of several modules, interconnecting
all CS pins ensures that the output currents are evenly dis-
tributed. This feature improves transient load performance
and increases system reliability. All paralleled units should
be supplied by equal input voltage (Vi) and
interconnecting leads should have equal length and cross
section to ensure equal voltage drop.
REV. FEB 15, 2004
Page 7 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
General condition: Case not earthed.
Table 7: Immunity type tests
Phenomenon Standard 1 Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
Per-
3
oper. form.
Electrostatic
discharge
IEC/EN
61000-4-2
3
contact discharge 6000 Vp
to case
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
A
A
Electromagnetic IEC/EN
field
2
antenna
i/c, +i/–i
3 V/m
AM 80%
1 kHz
80 - 1000 MHz
yes
yes
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
2
3
1000 Vp bursts of 5/50 ns 50 Ω
60 s positive
60 s negative
bursts per
A
B
5 kHz rep. rate
transients with
15 ms burst
2000 Vp
coupling mode
duration and a
300 ms period
Surge
IEC/EN
61000-4-5
2
2
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
A
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires
3 VAC
(130 dBµV)
AM 80%
1 kHz
150 Ω
0.15 - 80 MHz
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.
For emission levels refer to Electrical Input Data.
Immunity to Environmental Conditions
Table 8: Mechanical stress
Test Method
Standard
Test Conditions
Status
Ca
Ea
Eb
Fc
Damp heat
steady state
IEC/DIN IEC 60068-2-3
MIL-STD-810D section 507.2 Relative humidity:
Duration:
Temperature:
40 ±2 °C
%
21 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:
15 gn = 147 m/s2
11 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:
10 gn = 392 m/s2
16 ms
6000 (1000 each direction)
Unit
operating
Vibration
(sinusoidal)
IEC/EN/DIN EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.15 mm (10 - 60 Hz)
2 gn = 20 m/s2 (60 - 150 Hz) operating
10 - 150 Hz
Unit
Frequency (1 Oct/min):
Test duration:
3.75 h (1.25 h each axis)
REV. FEB 15, 2004
Page 8 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Table 9: Temperature specifications, valid for an air pressure of 800...1200 hPa (800...1200 mbar)
Temperature
Standard
Characteristics
Conditions
Operational 1
min
–10
–10
–25
max
50
Unit
°C
TA
TC
TS
Ambient temperature
Case temperature
80
Storage temperature
Non operational
85
1 See: Thermal Considerations and: Overtemperature Protection.
Table 10: MTBF
MTBF
Ground Benign
TC = 40°C
MTBF acc. to MIL-HDBK-217F
335'000 h
Mechanical Data
The converters are designed to be inserted into a rack according to IEC 60297-3.
European
Projection
171.9 (DIN 41494)
7 TE
30.3
5 TE
3.27
76
8
50
4 x M4
Measuring point of
case temperature TC
27.38
Front plate
Main face
Back plate
60
168.5 ±0.5
Fig. 11
Case S01, weight 1.3 kg
Aluminium, fully enclosed,
black finish and self cooling.
REV. FEB 15, 2004
Page 9 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Mechanical Data
The converters are designed to be inserted into a rack according to IEC 60297-3.
European
Projection
159
7 TE
30.3
4.5
9 TE
3.27
Measuring point of
case temperature TC
50
27.38
171.93 (DIN 41494)
80
d
Back plate
Main face
Front plate
168.5
Note:
– d ≥15 mm, recommended minimum dis-
tance to next part to ensure proper air cir-
culation at full output power.
– free air locations: the module should be
mounted with fins in vertical position to
achieve a maximum air flow through heat
sink.
Fig. 12
Case K01, weight 1.6 kg
Aluminium, fully enclosed,black finish and self cooling.
REV. FEB 15, 2004
Page 10 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Safety and Installation Instructions
Connector pin allocation
Table 11: H15 connector pin allocation
The connector pin allocation table defines the electrical
potentials and the physical pin position on the connector.
Pin 24 (protective earth) is the leading pin, which provides
electrical contact first. The modules should only be wired
via the female connector H15 (according to DIN 41612) to
ensure requested safety!
Electrical Determination
Type H15
Pin No.
Ident.
Output voltage (positive)
Output voltage (positive)
Output voltage (negative)
Output voltage (negative)
4
6
8
Vo+
Vo+
Go–
Go–
10
Not connected
Inhibit input
R-input (output voltage programming)
Sense line (negative)
Sense line (positive)
Current sharing control input
12
14
16
18
20
22
n.c.
i
R
S–
S+
CS
32
4
Protective ground (leading pin)
Input voltage (negative)
Input voltage (negative)
Input voltage (positive)
Input voltage (positive)
24
26
28
30
32
Fixtures for connector retension
clips V (see Accessories)
Gi–
Gi–
Vi+
Vi+
Fig. 13
View of male H15 connector
Standards and Approvals
Installation Instruction
All switching regulators are UL recognized according to
UL 60950, CAN/CSA C22.2 No. 234-M90 and IEC/EN
60950.
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 units have been evaluated for:
• Building in
• Operational insulation from input to output and input/out-
put to case
Check for hazardous voltages before altering any
connections.
The input and the output circuit are not separated. i.e. the
negative path is internally interconnected!
• 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 500 V
The units should be connected to a secondary circuit.
Do not open any module.
The switching regulators are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA and ISO 9001 standards.
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.
Note: Additional information on input circuitry, grounding
and parallel operation of units is given in: Technical Infor-
mation: Application Notes.
Protection Degree
The protection degree is IP 30. It applies only if the module
is plugged-in or the female connector is properly attached
to the module.
Isolation
Electric strength test voltage between input interconnected
with output and case: 500 VDC, 1 s.
This test is performed in the factory as routine test in
accordance with IEC/EN 60950 and UL 60950 and should
not be repeated in the field. Power-One will not honour any
guarantee claims resulting from electric strength field tests.
REV. FEB 15, 2004
Page 11 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
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.
However, it is the sole responsibility of the installer or user
to assure the compliance with the relevant and applicable
safety regulations.
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.
More information is given in: Technical Information: Safety.
Table 12: Insulation concept leading to an SELV output circuit
ConditionsFront 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
battery charger
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
from the
front end 1
Battery
supply,
Double or Reinforced
≤60 V
SELV circuit
None
SELV circuit
considered
as secon-
dary circuit
Mains
≤250 V AC
Basic
≤60 V
≤60 V
Earthed SELV circuit 2
ELV circuit
None
Earthed SELV
circuit
Input fuse 3 and earthed output
circuit 2 and earthed 2 or non
user accessible case
Double or reinforced
SELV circuit
None
SELV circuit
1 The front end output voltage should match the specified input voltage range of the switching regulator.
2 The earth connection has to be provided 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.
REV. FEB 15, 2004
Page 12 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Description of Options
B, B1 Cooling Plate
case temperature TC max is not exceeded. The required
cooling capacity can be calculated by the following
formula:
Where a cooling surface is available, a cooling plate
(option B, or option B1) can be used instead of the
standard heatsink. The mounting system must ensure suf-
ficient cooling capacity to guarantee that the maximum
100% – η
PLoss = –––––––- • (Vo • Io)
5
6.5
47.2
η
11027
38.5
11.8
17.3
133.4 ±0.2
168
Fig. 14
30
Option B, large cooling plate
Weight: 1.2 kg
5
47.2
38.5
5
158
11.8
M 4
168 ±0.5
171.9
Fig. 15
Option B1, small cooling plate
Weight: 1.2 kg
REV. FEB 15, 2004
Page 13 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
Accessories
A variety of electrical and mechanical accessories are
available including:
– Front panels for 19" rack mounting, Schroff and Intermas
systems, 12 and 16 TE.
– Mating H15 connectors with screw, solder fast-on or
press-fit terminals.
– Connector retention facilities (V-clips).
– DIN-rail mounting adaptor.
For more detailed information please refer to: Accessory
Products.
REV. FEB 15, 2004
Page 14 of 15
PSS, PSK Extended Data Sheet
Positive Switching Regulators (Benign)
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, 1 Sep. 2003
Power-One AG
Rolf Baldauf
Johann Milavec
Director Engineering
Director Projects and IP
REV. FEB 15, 2004
Page 15 of 15
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