PSC5A11-2I [BEL]
DC-DC Regulated Power Supply Module, 1 Output, Hybrid,;
| 型号： | PSC5A11-2I |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, Hybrid, |
| 文件： | 总8页 (文件大小：363K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Benign Environment
Switching Regulators, PCB & Chassis
PSC Series
PSR: Positive Switching Regulators
PSC-Series
No input to output isolation
Single output of 3.3 to 24 V DC/55...216 Watt
Input voltage up to 60 V DC
• High efficiency up to 94%
• Wide input voltage range
• Low input to output differential voltage
• Very good dynamic properties
• Input undervoltage lock-out
• Parallel configurations possible
• Continuous no-load and short-circuit proof
• No derating
32
1.3"
88
3.5"
151
5.9"
Safety according to IEC/EN 60950
C
Summary
ules with input voltages up to 60 V are specially designed
for secondary switched and battery driven applications. The
case design allows operation at nominal load up to 50°C
without additional cooling.
The PSC 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-
Type Survey 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
package
hmin [%]
3.3
5.1
12
15
24
12
11
9
6...40
8...40
20
20
20
30
40
77
PSC 3E12-2
PSC 5A11-2
PSC 129-2
PSC 159-2
PSC 249-2
iR
78
15...40
19...40
29...60
89
9
90
9
93
1 See also: Electrical Input Data: DUio min
.
2 Efficiency at Ui nom and Io nom
.
Page
Table of Contents
Page
Electromagnetic Compatibility (EMC) .............................. 5
Immunity to Environmental Conditions............................. 6
Mechanical Data .............................................................. 6
Safety and Installation Instructions .................................. 7
Description of Options...................................................... 8
Summary.......................................................................... 1
Type Survey and Key Data .............................................. 1
Type Key .......................................................................... 2
Functional Description...................................................... 2
Electrical Input Data ......................................................... 3
Electrical Output Data ...................................................... 4
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PSC Series
Switching Regulators, PCB & Chassis
Benign Environment
Type Key
PSC 12 9 -2 iR
Positive switching regulator in case C03 ....................PSC
Nominal output voltage in volt (3E for 3.3 V) .......... 3E...24
Nominal output current in ampere............................. 9...11
Operational ambient temperature range TA
–10...50°C ........................................................... -2
Option package:
Inhibit input ............................................................ i
Control input for output voltage adjustment ......... R
Example: PSC 129-2iR = A positive switching regulator with a 12 V, 9 A output, ambient temperature range of
–10…50°C, with options package inhibit input and control input for output voltage adjustment.
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 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. Regula-
tion is accomplished 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.
03014
Io
Ii
Vo+
Vi+
i (option
package)
Control circuit
Ui
Uo
Ce
R (option
package)
G (option
package)
Go–
Gi–
Fig. 1
Block diagram
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Electrical Input Data
General Conditions: TA = 25°C, unless TC is specified
Table 2a: Input data
Input
PSC 3E12
PSC 5A11
PSC 129
Characteristics
Conditions
min
typ
max
40
min
8
typ
max
min
15
typ
max
40
3
Unit
Ui
Operating input voltage
Io = 0...Io nom
TC min...TC max
6
40
V DC
DUio min Min. diff. voltage Ui – Uo
2.7
2.9
Ui o
Ii 0
Undervoltage lock-out
No load input current
4.7
7.3
7.3
Io = 0, Ui min...Ui max
50
A
50
A
50
mA
A
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Ui nom
Rise time
150
5
150
5
150
5
µs
Time to half-value
40
40
40
Input RFI level,EN 55011/22 Ui nom, Io nom
0.01...30 MHz 1
A
Table 2b: Input data
Input
PSC 159
PSC 249
Characteristics
Conditions
min
19
typ
max
40
4
min
29
typ
max
60
5
Unit
Ui
Operating input voltage
Io = 0...Io nom
TC min...TC max
V DC
DUio min Min. diff. voltage Ui – Uo
Ui o
Ii 0
Undervoltage lock-out
No load input current
7.3
12
Io = 0, Ui min...Ui max
50
50
mA
A
Iinr p
tinr r
tinr h
ui RFI
Peak value of inrush current Ui nom
Rise time
250
5
250
5
µs
Time to half-value
40
40
Input RFI level,EN 55011/22 Ui nom, Io nom
0.01...30 MHz 1
A
A
1 Additional external input filter or capacitor necessary.
04016
External Input Circuitry
Vo+
Vi+
+
a
b
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 an external input filter with capacitor is fitted.
This filter is recommended in order to prevent power line
oscillations and reduce superimposed interference vol-
tages. See also: Technical Information: Application Notes.
Gi–
Go–
Fig. 2
Switching regulator with long supply lines.
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Benign Environment
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
PSC 3E12
PSC 5A11
PSC 129
Characteristics
Conditions
min
typ
max
3.35
12.0
15.6
min
5.05
0
typ
max
min
typ
max
12.40
9.0
Unit
V
Uo
Io
Output voltage
Ui nom, Io nom
3.25
0
5.15 11.60
Output current 1
Ui min...Ui max
TC min...TC max
11.0
14.3
0
A
IoL
Output current limitation
response 1
12.0
11.0
9.0
11.7
uo
Output
voltage
noise
Switching freq. Ui nom, Io nom
IEC/EN 61204 2
55
60
55
60
150
160
mVpp
mV
Total
BW = 20 MHz
DUo U Static line regulation
DUo l Static load regulation
Ui min...Ui max, Io nom
Ui nom, Io = 0...Io nom
100
100
100
100
240
120
uo d
td
Dynamic
load
regulation
Voltage deviat. Ui nom
150
50
130
50
360
60
I
o nom ↔ 1/
Io nom
3
Recovery time
µs
IEC/EN 61204 2
aUo
Temperature coefficient
DUo/DTC (TC min...TC max
Ui min...Ui max
Io = 0...Io nom
±1
±1
±2
mV/K
)
±0.02
±0.02
±0.02 %/K
Table 3b: Output data
Output
PSC 159
PSC 249
Characteristics
Conditions
min
typ
max
min
typ
max
24.70
9.0
Unit
V
Uo
Io
Output voltage
Output current 1
Ui nom, Io nom
14.50
0
15.50 23.30
Ui min...Ui max
TC min...TC max
9.0
0
A
IoL
Output current limitation
response
9.0
11.7
9.0
11.7
uo
Output
voltage
noise
Switching freq. Ui nom, Io nom
200
210
300
310
mVpp
mV
IEC/EN 61204 2
BW = 20 MHz
Total
DUo U Static line regulation
DUo l Static load regulation
Ui min...Ui max, Io nom
Ui nom, Io = 0...Io nom
300
150
480
240
uo d
td
Dynamic
load
regulation
Voltage deviat. Ui nom
o nom ↔ 1/
Io nom
450
60
700
80
I
3
Recovery time
µs
IEC/EN 61204 2
aUo
Temperature coefficient
DUo/DTC (TC min...TC max
Ui min...Ui max
I
Io = 0... o
nom
±3
±5
mV/K
)
±0.02
±0.02 %/K
1 See also: Thermal Considerations.
2 See: Technical Information: Measuring and Testing.
05010
Uo
Parallel and Series Connection
uod
DUo I
DUo 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.
uod
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 s
≥10 s
Fig. 3
Dynamic load regulation.
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PSC Series
Thermal Considerations
Output Protection
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).
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
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 Melcher power supplies, in
the event of a failure, do not result in an unsafe condition
(fail-safe).
Under practical operating conditions, the ambient tempera-
ture TA may exceed 50°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 80°C.
Short Circuit Behaviour
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.
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.
Io/Io nom
Forced cooling
1.0
Uo/Uo nom
0.9
0.8
05033
1.2
1.0
0.7
Convection cooling
0.6
0.8
TC max
Io L
0.5
0.6
0.4
0.3
0.2
0.1
0.4
0.2
Io/Io nom
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
TA [°C]
TA min
40
60
70
80
50
Fig. 5
Overload, short-circuit behaviour Uo versus Io.
Fig. 4
Output current derating versus temperature.
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
Electrostatic
discharge
IEC/EN
61000-4-2
2
contact discharge 4000 Vp
to case
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
A 4
Electromagnetic IEC/EN
2
antenna
3 V/m
AM 80%
1 kHz
26…1000 MHz
yes
yes
A
field
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
2
3
i/c, +i/–i
1000 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
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 4
A
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires 130 dBµV
(3 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 neccessary.
For emission levels refer to: Electrical Input Data.
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Benign Environment
Immunity to Environmental Conditions
Table 5: 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)
10...150 Hz
Unit
operating
Frequency (1 Oct/min):
Test duration:
3.75 h (1.25 h each axis)
Table 6: Temperature specifications, valid for air pressure of 800...1200 hPa (800...1200 mbar)
Temperature
Standard
Characteristics
Conditions
Operational 1
min
–10
–10
–25
max
50
Unit
TA
TC
TS
Ambient temperature
°C
Case temperature
80
Storage temperature
Non operational
100
1 See Thermal Considerations
Table 7: MTBF
MTBF
Ground Benign
MTBF acc. to MIL-HDBK-217F
TC = 40°C
484'000 h
Mechanical Data
Dimensions in mm. Tolerances ±0.3 mm unless otherwise specified.
European
Projection
09019
Option package
Gi–
Go– Vo+
Vi+
G
R
i
151±1
144 (for M4 mounting screws)
5 ±0.5
Measuring point
of case temperature T
C
Fig. 6
Case C03, weight 440 g
Aluminium,
black finish and self cooling
11.3
18.5
12.5 ±1
7.5
40
7.5 10 7.5 10
27.5
(14)
7.5
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Safety and Installation Instructions
Installation Instruction
Standards and Approvals
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.
All switching regulators are UL recognized according to UL
1950, UL 1012 and EN 60950, UL recognized for Canada to
CAN/CSA C22.2 No. 234-M90 and SEV approved to IEC/
EN 60950 and EN 55014 standards.
Check for hazardous voltages before altering any connec-
tions. Connections can be made using fast-on or soldering
technique.
The units have been evaluated for:
• Building in,
• 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.
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 module.
The switching regulators are subject to manufacturing sur-
veillance in accordance with the above mentioned UL and
CSA and with 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.
Isolation
Electric strength test voltage between input interconnected
with output and case: 500 V DC, 1 s.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids is to be prevented, since the power supplies
are not hermetically sealed.
This test is performed as factory test in accordance with
IEC/EN 60950 and UL 1950 and should not be repeated in
the field. Melcher will not honour any guarantee claims re-
sulting from electric strength field tests.
Protection Degree
The protection degree is IP 20.
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 nominal output voltage of 30 V.
More information is given in: Technical Information: Safety
& EMC.
Table 8: Insulation 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
SELV circuit
battery charger
front end 1
Battery
Double or Reinforced
≤60 V
None
SELV circuit
supply,
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
accessible case 4
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. If option C is fitted, a suitable fuse is already built-in in the Vi+ line.
4 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.
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Description of Options
With this series, the options i (inhibit) and R (control input for output voltage adjustment) are defined as a package. Other
combinations or parts of this package are not available.
R Control for Output Voltage Adjustment
Note: With open R input, Uo ≈ Uo nom
.
The output voltage Uo can either be adjusted with an exter-
nal reference voltage (Uext) or with an external resistor
(Rext). The adjustment range is 0…100% of Uo nom. The
minimum differential voltage DUio min between input and out-
put (see: Electrical Input Data) should be maintained.
Undervoltage look-out = minimum input voltage.
Vo+
Vo +
06035
06040
Uref
Uref
4000 Ω
4000 Ω
R
R
+
–
+
–
+
Uext
Rext
G
Go–
G
Go –
Fig. 7
Voltage adjustment with Uext between R and G (Go–)
Fig. 8
Voltage adjustment with external resistor Rext
Uo
ext ≈ 2.5 V • –––––
Uo nom
Uext
Uo ≈ Uo nom • –––––
2.5 V
4000 Ω • Uo
Uo nom • Rext
U
R
ext ≈ –––––––––––
Uo ≈ ––––––––––––
Rext + 4000 Ω
Uo nom – Uo
Caution: To prevent damage Uext must neither exceed
2.7 V, nor be negative!
i Inhibit for Remote On and Off
06009
Note: With open i-input, output is enabled (Uo = on)
Vo+
Vi+
Iinh
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.
i
Uinh
Go–
Gi–
Fig. 10
Definition of Iinh and Uinh
Iinh [mA]
06034
5
06001
Uo/Uo nom
4
3
2
1
0.1
0
t
tf
tr
Uo on
Uo off
1
Inhibit
1
0
–50
Uinh [V]
–20
–30
–10
0
–40
10 20 30 40 50
t
0
Fig. 9
Fig. 11
Typical inhibit current Iinh versus inhibit voltage Uinh
Output response as a function of inhibit signal
Table 9: Inhibit characteristics
Characteristics
Conditions
min
–50
+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
5
ms
t f
10
10
Ii inh
Ui = Ui nom
mA
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