PSR54-9PY [BEL]
DC-DC Regulated Power Supply Module, 1 Output, 20W, Hybrid, METAL, CASE A01, MODULE-6;
| 型号： | PSR54-9PY |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 20W, Hybrid, METAL, CASE A01, MODULE-6 |
| 文件： | 总12页 (文件大小：208K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Input voltage up to 80 V DC
Single output of 5...36 V DC
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
• Parallel configuration possible
• Continuous no-load and short-circuit proof
• No derating
25
1.0"
50
2.0"
70
2.8"
Safety according to IEC/EN 60950
Summary
Modules with input voltages up to 80 V are specially de-
signed for secondary switched and batterydriven applica-
tions.The case design allows operation at nominal load up
to 71°C without additional cooling.
The PSR 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.
Model Selection and Key Data
Table 1: Type survey
Output
voltage
Uo nom [V]
Output
current
Io nom [A]
Input
voltage range
Ui [V] 1
Input
voltage
Ui nom [V]
Efficiency 2
Type
designation
Options
ηmin [%]
ηtyp [%]
74
5
5
2
3
8...80
8...80
40
40
20
20
40
40
50
60
72
77
82
81
86
88
91
92
PSR 52-7
PSR 53-7
PSR 54-7
PSA 55-7
PSR 122.5-7
PSR 152.5-7
PSR 242-7
PSR 362-7
.
Y
79
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
-9, i, P, R, Y
5
4
7...40
83
5
5
7...35
83
12
15
24
36
2.5
2.5
2
15...80
19...80
29...80
42...80
87
89
92
2
94
1 See also: Electrical Input Data: DUio min
.
2 Efficiency at Ui 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 .......................................................... 5
Electromagnetic Compatibility (EMC) ............................. 6
Immunity to Environmental Conditions ........................... 7
Mechanical Data.............................................................. 8
Safety and Installation Instructions ................................. 8
Description of Options ................................................... 10
Accessories ................................................................... 11
EC Declaration of Conformity ....................................... 12
REV. SEP 17, 2003
Page 1 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Part Number Description
PSR 12 2.5 -7 i R P Y
Positive switching regulator in case A01 .................... PSR
Nominal output voltage in volt .................................. 5...36
Nominal output current in ampere .............................. 2...5
Operational ambient temperature range TA
–25...71°C ........................................................... -7
–40...71°C (option) .............................................. -9
Options:
Inhibit input ............................................................ i
Control input for output voltage adjustment 1 ....... R
Potentiometer 1 ..................................................... P
PCB soldering pins 0.5 × 1.0 mm ......................... Y
1 Option R excludes option P and vice versa.
Example: PSR 122.5-7iPY = A positive switching regulator with a 12 V, 2.5 A output, ambient temperature range of
–25…71°C, inhibit input, potentiometer and PCB soldering pins.
Functional Description
The switching regulators are using the buck converter to-
pology. See also: Technical Information: Topologies. 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 in
the form of flux. 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 accomplished by varying the on to off duty ratio of the
power switch.
These regulators are ideal for a wide range of applica-
tions, 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.
03015
Io
Ii
Vo+
Vi+
i (option)
Control circuit
Ui
Uo
Ce
R (option)
Go–
Gi–
Option P
Fig. 1
Block diagram
REV. SEP 17, 2003
Page 2 of 12
PSR 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
PSA 55
PSR 54
PSR 53
PSR 52
Characteristics
Ui Operating input voltage
DUio min Min. diff. voltage Ui – Uo
Conditions
min typ max min typ max min typ max min typ max Unit
Io = 0...Io nom
TC min...TC max
7
35
2
7
40
2
8
80
3
8
80 V DC
3
1
Ui o
Ii 0
Undervoltage lock-out
No load input current
6.3
6.3
7.3
7.3
Io = 0, Ui min...Ui max
45
45
40
40
mA
A
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Ui nom
Rise time
75
2.5
15
75
2.5
15
150
2.5
15
150
2.5
15
µs
Time to half-value
Input RFI level,EN 55011/22 Ui nom, Io nom
0.15...30 MHz
B 2
B 2
B 3
B 3
Table 2b: Input data
Input
PSR 122.5
PSR 152.5
PSR 242
PSR 362
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
Ui
Operating input voltage
Io = 0...Io nom
TC min...TC max
15
80
3
19
80
4
29
80
5
42
80 V DC
6
1
DUio min Min. diff. voltage Ui – Uo
Ui o
Ii 0
Undervoltage lock-out
No load input current
7.3
7.3
12
19
Io = 0, Ui min...Ui max
35
35
35
40
mA
A
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Ui nom
Rise time
150
2.5
15
150
2.5
15
150
2.5
15
150
2.5
15
µs
Time to half-value
Input RFI level,EN 55011/22 Ui nom, Io nom
0.15...30 MHz
B 3
B 3
B 3
B 3
1 The minimum differential voltage DUio 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)
2 With input filter FP 38 (See: Accessories) and Ce = 470 µF/40 V
3 With input filter FP 80 (See: Accessories) and Ce = 470 µF/100 V
External Input Circuitry
04016
The sum of the lengths of the supply lines to the source or
Vo+
Vi+
Gi–
to the nearest capacitor •100 µF or to the nearest external
input filter which includes such a capacitor (a + b) should
not exceed 0.3 m (0.5 m twisted). An external input filter
(FP 38 or FP 80, see: Accessories) is recommended in or-
der to prevent power line oscillations and reduce superim-
posed interference voltages. See also: Technical Informa-
tion.
+
a
b
Go–
Fig. 2
Switching regulator with long supply lines.
REV. SEP 17, 2003
Page 3 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Electrical Output Data
General Conditions:
– TA = 25°C, unless TC is specified
– With R or option P, output voltage Uo = Uo nom at Io nom
Table 3a: Output data
Output
PSA 55
PSR 54
PSR 53
PSR 52
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
Uo
Io
Output voltage
Ui nom, Io nom
4.97
0
5.03 4.97
5.03 4.97
5.03 4.97
5.03
2.0
V
A
Output current 1
Ui min...Ui max
TC min...TC max
5.0 3
6.5
0
4.0
5.2
0
3.0
3.9
0
IoL
Output current limitation
response 1
5.0
4.0
3.0
2.0
2.6
uo
Output
voltage
noise
Switching freq. Ui nom, Io nom
20 35
24 39
15 25
19 29
20 35
24 39
20 35 mVpp
24 39
IEC/EN 61204 2
Total
BW = 20 MHz
DUo U Static line regulation
Ui min...Ui max, Io nom
Ui nom, Io = 0...Io nom
30 45
20 25
250
30 45
20 25
200
30 45
20 25
100
30 45
20 25
100
mV
DUo l
uo d
td
Static load regulation
Dynamic
load
Voltage deviat. Ui nom
1
I
o nom ↔ /
3
Io nom
Recovery time
40
40
50
50
µs
regulation
IEC/EN 61204 2
aUo
Temperature coefficient
DUo/DTC (TC min...TC max
Ui min...Ui max
Io = 0...Io nom
±1
±1
±1
±1 mV/K
±0.02 %/K
)
±0.02
±0.02
±0.02
Table 3b: Output data
Output
PSR 122.5
PSR 152.5
PSR 242
PSR 362
Characteristics
Conditions
min typ max min typ max min typ max min typ max Unit
Uo
Io
Output voltage
Output current 1
Ui nom, Io nom
11.93
0
12.07 14.91
2.5
3.25 2.5
15.09 23.86
24.14 35.78
36.22
2.0
V
A
Ui min...Ui max
TC min...TC max
0
2.5
0
2.0
2.6
0
IoL
Output current limitation
response 1
2.5
3.25
2.0
2.0
2.6
uo
Output
voltage
noise
Switching freq. Ui nom, Io nom
30 45
40 75
44 80
45 95
50 100
80 160 mVpp
85 165
IEC/EN 61204 2
BW = 20 MHz
Total
35 50
DUo U Static line regulation
Ui min...Ui max, Io nom
Ui nom, Io = 0...Io nom
50 75
35 45
180
70 100
40 55
180
150 220
120 160
210
200 270
125 160
250
mV
DUo l
uo d
td
Static load regulation
Dynamic
load
Voltage deviat. Ui nom
1
I
o nom ↔ /
3
Io nom
Recovery time
60
60
80
100
µs
regulation
IEC/EN 61204 2
aUo
Temperature coefficient
DUo/DTC (TC min...TC max
Ui min...Ui max
Io = 0...Io nom
±2
±3
±5
±8 mV/K
±0.02 %/K
)
±0.02
±0.02
±0.02
1 See also: Thermal Considerations.
2 See: Technical Information: Measuring and Testing.
3 Linear derating from 5 to 4 A between TA = 61°C and 71°C (TC = 85°C and 95°C).
REV. SEP 17, 2003
Page 4 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
05010
Uo
Output Protection
uod
DUo I
DUo I
A voltage suppressor diode which in worst case conditions
fails into a short circuit, protects the output against an in-
ternally generated overvoltage. Such an overvoltage could
occur due to a failure of either the control circuit or the
switching transistor. The output protection is not designed
to withstand externally applied overvoltages. 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).
uod
td
td
t
I /I
o
o nom
1
t
0
≥10 µs
≥10 µs
Parallel and Series Connection
Fig. 3
Outputs of equal nominal voltages can be parallel-con-
nected. However, the use of a single unit with higher out-
put power, because of its power dissipation, is always a
better solution.
Dynamic load regulation.
Thermal Considerations
When a switching regulator is located in free, quasi-sta-
tionary air (convection cooling) at a temperature TA = 71°C
and is operated at its nominal output current Io nom, the
case temperature TC will not exceed 95°C after the warm-
up phase, measured at the Measuring point of case tem-
perature TC (see: Mechanical Data).
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. Con-
sequently, the max. ambient temperature value should be
reduced by 10 K.
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!
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.
Short Circuit Behaviour
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
A constant current limitation circuit holds the output cur-
rent almost constant whenever an overload or a short cir-
cuit is applied to the regulator's output. It acts self-protect-
ing and recovers – in contrary to the fold back method –
automatically after removal of the overload or short circuit
condition.
Forced cooling
1.0
0.9
0.8
Uo/Uo nom
I
05033
Convection cooling
1.2
1.0
0.7
0.6
TC max
0.5
0.8
0.4
0.3
0.2
0.1
Io L
0.6
0.4
0.2
0
T [ C]
Io/Io nom
A
0
T
50
60
70
80
90
100
A min
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Fig. 5
Fig. 4
Output current derating versus temperature
Overload, short-circuit behaviour Uo versus Io.
Auxiliary Functions
LED Output Voltage Indicator
A yellow output indicator LED shines when the output volt-
age is higher than approx. 3 V.
The LED output voltage indicator is not available for
PSR 52.
REV. SEP 17, 2003
Page 5 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
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
Voltage surge
IEC 60571-1
i/c, +i/–i
800 Vp
100 µs
50 µs
100 Ω
yes
B
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
B 4
A
Electromagnetic IEC/EN
field
antenna
i/c, +i/–i
3 V/m
AM 80%
1 kHz
26…1000 MHz
yes
yes
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
3
4
2000 Vp bursts of 5/50 ns 50 Ω
1 min positive
1 min negative
bursts per
A 4
B 4
5 kHz rep. rate
transients with
15 ms burst
4000 Vp
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
B 4
A
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires 140 dBµV
(10 Vrms
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.
4 External input filter FP 38 or FP 80 necessary.
Electromagnetic Emission
For emission levels refer to: Electrical Input Data.
[dBµV]
90
07011
80
EN 55022 A
EN 55022 B
70
60
50
40
30
20
10
Fig. 6
Typical disturbance voltage (quasi-peak) at the input ac-
cording to EN 55011/22 measured at Ui nom and Io nom
0
MHz
.
REV. SEP 17, 2003
Page 6 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
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 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:
0.7 mm (10...60 Hz)
Unit
(sinusoidal)
10 gn = 98 m/s2 (60...2000 Hz) operating
10...2000 Hz
Frequency (1 Oct/min):
Test duration:
7.5 h (2.5 h each axis)
Fda Random vibration IEC 60068-2-35
Acceleration spectral density: 0.2 g2/Hz
Unit
wide band
Reproducibility
high
DIN 40046 part 23
Frequency band:
Acceleration magnitude:
Test duration:
20...500 Hz
9.8 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 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 7: MTBF and device hours
MTBF
Ground Fixed
Ground Mobile
Device Hours 1
MTBF acc. to MIL-HDBK-217D
TC = 40°C
160'000
TC = 70°C
70'000 h
TC = 40°C
45'000 h
TC = 70°C
22'000 h
5'100'000 h
1 Statistical values, based on an average of 4300 working hours per year and in general field use.
REV. SEP 17, 2003
Page 7 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Mechanical Data
Dimensions in mm. Tolerances ±0.3 mm unless otherwise specified.
European
Projection
20.5
Yellow
LED output
voltage indicator
18.7
1.2
6.3
Potentiometer
(option P)
12.2
Go–
Vo+
i
R
Ø 4
Gi–
Vi+
2.7 ±0.2
50.2 ±0.2
Measuring point
of case temperature
min. 5
09016
20.5
6.3
18.7
1.2
2.8 x 0.5
(1.0 x 0.5 option Y)
Fig. 7
Case A01, weight 100 g
Aluminium, black finish
and self cooling
Fig. 8
Case A01 hole locations for circuit board layout (compo-
nent side view of PCB):
- - - = Space reserved for switching regulator
a
= 3.0 mm x 0.7 mm slot or Ø 3.0 mm, through
plated for hand or machine soldering (fast on)
= Ø 1.3...1.5 mm with option Y pins
51.4
a
Safety and Installation Instructions
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 units should be connected to a secondary circuit.
Do not open the module.
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.
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!
REV. SEP 17, 2003
Page 8 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Cleaning Agents
The units have been evaluated for:
• Building in,
• Functional 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.
In order to avoid possible damage, any penetration of
cleaning fluids is to be prevented, since the power sup-
plies are not hermetically sealed.
Protection Degree
The switching regulators are subject to manufacturing sur-
veillance in accordance with the above mentioned UL and
CSA and with ISO 9001 standards.
The protection degree is IP 40 and IP 20 with option P and
for PSR 52.
Isolation
Electric strength test voltage between input intercon-
nected with output and case: 750 V DC, 1 s.
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
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.
The following table shows some possible installation con-
figurations, compliance with which causes the output cir-
cuit of the switching regulator to be an SELV circuit ac-
cording to IEC/EN 60950 up to a nominal output voltage of
30 V.
Standards and Approvals
All switching regulators are UL recognized according to
UL 1950 and EN 60950, UL recognized for Canada to
CAN/CSA C22.2 No. 234-M90.
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
& EMC.
Table 8: Safety concept leading to an SELV output circuit
Conditions Front end
Switching regulator
Result
Supply
voltage
Minimum required grade Maximum Minimum required safety
of isolation, to be provided DC output status of the front end
Measures to achieve the
specified safety status of the
output circuit
Safety status of
the switching
regulator output
circuit
by the AC-DC front end,
voltage
output circuit
including mains-supplied from the
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 SELV
circuit
considered
as secon-
dary circuit
secondary circuit 2
non accessible case 5
Unearthed hazardous
Input fuse 3 and unearthed,
Unearthed SELV
circuit
voltage secondary circuit 5 non accessible case 5
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
≥60 V
Earthed SELV circuit 4
ELV circuit
None
Input fuse 3 and earthed output
circuit 4 and non
accessible case 5
Hazardous voltage
secondary circuit
Double or reinforced
≤60 V
≥60 V
SELV circuit
None
SELV circuit
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.
REV. SEP 17, 2003
Page 9 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
Description of Options
i Inhibit for Remote On and Off
06009
Vo+
i
Vi+
Gi–
Note: With open i-input, output is enabled (Uo = on).
Iinh
Not available for PSR 52.
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.
Uinh
Go–
Fig. 10
Definition of Iinh and Uinh
Iinh [mA]
06010
06001
5
Uo/Uo nom
1
4
3
0.1
0
t
U
U
tf
tr
2
Uo on
Uo off
1
0
Inhibit
1
t
0
Uinh [V]
-20
-50
-30
-10
0
-40
10 20 30 40 50
Fig. 9
Fig. 11
Typical inhibit current Iinh versus inhibit voltage Uinh
Table 9: Inhibit characteristics
Characteristics
Output response as a function of inhibit signal
Conditions
min
–10
+2.4
typ
max
+0.8
+50
Unit
Uinh
Inhibit input voltage to keep Uo = on
Ui min...Ui max
TC min...TC max
V DC
regulator output voltage...
Uo = off
t r
Switch-on time after inhibit command
Switch-off time after inhibit command
Input current when inhibited
Ui = Ui nom
RL = Uo nom /Io nom
2
4
ms
t f
Ii inh
Ui = Ui nom
10
mA
R Control for Output Voltage Adjustment
Note: With open R input, Uo ≈ 1.08 Uo nom
(Exception: With option Y, Uo ≈ 1.00 Uo nom
Vo+
06035
.
Uref
4000 Ω
)
R
Option R excludes option P and vice versa.
Not available for PSR 52.
+
–
+
Uext
G
The output voltage Uo can either be adjusted with an exter-
nal voltage (Uext) or with an external resistor (R1 or R2).
The adjustment range is 0...108% of Uo nom.The minimum
differential voltage DUio min between input and output (see:
Electrical Input Data) should be maintained. Under-volt-
age lock-out = Minimum input voltage.
Go–
Fig. 12
Voltage adjustment with Uext between R and Go–
a) Without option Y: Uo = 0...108% Uo nom, using Uext
2.5 V • Uo
Uext
Uext ≈ –––––––––––
Uo ≈ 1.08 Uo nom • –––––
1.08 • Uo nom
2.5 V
b) With option Y: Uo = 0...108% Uo nom
2.5 V • Uo
Uext
Uext ≈ –––––––––
Uo ≈ Uo nom • –––––
Uo nom
2.5 V
REV. SEP 17, 2003
Page 10 of 12
PSR Series Extended Data Sheet
Positive Switching Regulator (Industrial)
-9 Extended Temperature Range
Vo+
06036
Uref
R2
R1
Note: Not available for PSR 52.
4000 Ω
The operational ambient temperature range is extended
to TA = –40...71°C. (TC = –40...95°C, TS = –55...100°C.)
+
–
R
G
Y PCB Soldering Pins
Go–
This option defines soldering pins of 1.0 × 0.5 × 6.5 mm,
instead of the standard fast-on terminals of 2.8 × 0.5 ×
6.5 mm. Regulators with this option can be mounted onto
printed circuit boards (through-plated finished hole size of
Ø 1.3...1.5 mm).
Fig. 13
Voltage adjustment with external resistor R1 or R2
c) Without option Y: Uo = 0...108% Uo nom, using R1
4000 Ω • Uo
1.08 • Uo nom • R1
The combination of option Y with option R will result in a
different setting of the output voltage (see also descrip-
tion of: R Control).
R1 ≈ ––––––––––––––
Uo ≈ ––––––––––––––
1.08 • Uo nom – Uo
R1 + 4000 Ω
d) With option Y: Uo = 0...100% Uo nom, using R1
4000 Ω • Uo
Uo nom • R1
P
Potentiometer
R1 ≈ –––––––––––
Uo ≈ –––––––––––
Note: Not available for PSR 52.
Uo nom – Uo
R1 + 4000 Ω
Option P excludes option R. The output voltage Uo can be
adjusted with a screwdriver in the range from 0.92...1.08 of
e) With option Y: Uo = 100...108% Uo nom, using R2
4000 Ω • Uo • (Uo nom – 2.5 V)
the nominal output voltage Uo nom
.
R2 ≈ ––––––––––––––––––––––––
2.5 V • (Uo – Uo nom
)
However, the minimum differential voltage DUi o min be-
tween input and output voltages as specified in: Electrical
Input Data should be maintained.
Uo nom • 2.5 V • R2
Uo ≈ ––––––––––––––––––––––––––––––––
2.5 V • (R2 + 4000 Ω) – Uo nom • 4000 Ω
Caution: To prevent damage Uext should not exceed
20 V, nor be negative and R2 should never be less than
47 kΩ.
Accessories
A variety of electrical and mechanical accessories are
available including:
– Isolation pads for easy and safe PCB-mounting.
– Filters and ring core chockes for ripple and interference
reduction.
– Adaptor kits for DIN-rail and chassis mounting.
For detailed information see: 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. SEP 17, 2003
Page 11 of 12
PSR 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 ar 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, 17 Sep. 2003
Power-One AG
Rolf Baldauf
Johann Milavec
Director Engineering
Director Projects and IP
REV. SEP 17, 2003
Page 12 of 12
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