Features
Regulated
Converter
Description
•
•
•
•
•
•
•
4:1 wide input voltage range
3kVDC isolation and reinforced insulation
UL60950-1 & IEC/EN60950-1 certified
EN50155 pending
Efficiency up to 88.5%
OCP, OVP, OTP
+100°C max. case temperature
DC/DC Converter
RPA120H-RW
120 Watt
Half Brick
Single Output
The RPA120H series are high power, 110VDC wide input range 120W DC/DC converters in an
industry standard half brick format. Despite their low cost, the RPA120H converters are fully specified
devices with output currents up to 8.3Amps, up to 88.5% efficiency, no minimum load,
3kVDC isolation, tight regulation and low ripple/noise figures. The trimmable outputs are also fully
protected against over-temperature, short circuits, overcurrent and overvoltage. The converters are
UL60950-1 and IEC/EN60950-1 certified and EN50155 pending and will find many uses in cost
sensitive railway and industrial applications.
Selection Guide
Part Number
Input
Voltage Range
[VDC]
(2)
RPA120H-11012SRW
53-154
(2)
RPA120H-11015SRW
53-154
RPA120H-11024SRW
(2)
53-154
Notes:
Note1:
Output
Voltage
[VDC]
12
15
24
Output
Current
[mA]
8300
6700
5000
Output
Power
[W]
100
100
120
Efficiency
(1)
typ.
[%]
86
88.5
88.5
Max. Capacitive
Load
[µF]
680
680
300
Efficiency is tested by nominal Vin, full load and at 25°C
E224736
UL60950-1 certified
IEC/EN60950-1 certified
EN50155 certified
Model Numbering
RPA120H-__ __ SRW/_ _
Input Voltage
Output Voltage
Single
Ordering Examples
RPA120H-11012SRW/P = 110V Input, 12V Output, Single, Pos. CTRL function, without Gate Out pin
RPA120H-11015SRW/GP = 110V Input, 15V Output, Single, Pos. CTRL function, with Gate Out pin
RPA120H-11024SRW/N = 110V Input, 24V Output, Single, Neg. CTRL function, without Gate Out pin
RPA120H-11015SRW/GN = 110V Input, 15V Output, Single, Neg. CTRL function, with Gate Out pin
CTRL Logic
(2)
Gate Out Pin
(2)
Notes:
Note2: standard part is with suffix “P” for positive logic (1=ON, 0=OFF) omitted Gate Out pin
or add suffix “N” instead for negative logic (0=ON, 1=OFF) omitted Gate Out pin
add suffix “G” for Gate Out pin
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REV.: 3/2018
PB-1
RPA120H-RW
DC/DC Converter
Specifications
(measured @Ta = 25°C, resistive load, nominal Vin and rated Iout unless otherwise noted)
BASIC CHARACTERISTICS
Parameter
Internal Input Filter
Input Voltage Range
Input Surge Voltage
Quiescent Current
Start-up time
Rise Time
Internal Operating Frequency
Minimum Load
Ripple and Noise
Under Voltage Lockout (UVLO)
Over Voltage Lockout (OVLO)
Positive Logic
ON/OFF Control
Negative Logic
Input current of CTRL pin
Output Voltage Trimming
Single Outputs
-10%
5Hz to 20MHz BW
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
49VDC
46VDC
154VDC
158VDC
3VDC
0VDC
0VDC
3VDC
17.1mA
0%
50mVp-p
51VDC
48VDC
158VDC
162VDC
100mVp-p
53VDC
50VDC
162VDC
166VDC
5VDC
1VDC
1VDC
5VDC
30mA
+10%
nom. Vin = 110V
<100ms
12Vout
15Vout
24Vout
Power up
CTRL ON/OFF
Vout from 10% to 90%
18.3mA
21.5mA
25mA
50ms
55ms
25ms
550kHz
53VDC
110VDC
Series
Condition
Min.
Typ.
Max.
Pi-Type
154VDC
250VDC
30mA
30mA
35mA
80ms
100ms
50ms
RPA120H-11012SRW
Efficiency vs. Output Current
100
90
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
53Vin
110Vin
154Vin
80
20
18
16
14
12
10
8
6
4
2
90
100
0
0
10
Power Dissipation vs Load Current
Power Dissipation [W]
Efficiency [%]
53Vin
110Vin
154Vin
Output Current [%]
20
30
40
50
60
70
80
90
100
RPA120H-11015SRW
Efficiency vs. Output Current
100
90
80
Output Current [%]
15.0
13.5
12.0
10.5
9.0
7.5
6.0
4.5
3.0
1.5
0
100
0
10
20
30
40
50
60
70
80
90
100
53Vin
110Vin
154Vin
Power Dissipation vs Load Current
Efficiency [%]
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
53Vin
110Vin
154Vin
90
Power Dissipation [W]
Output Current [%]
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continued on next page
REV.: 3/2018
Output Current [%]
PB-2
RPA120H-RW
DC/DC Converter
Specifications
(measured @Ta = 25°C, resistive load, nominal Vin and rated Iout unless otherwise noted)
RPA120H-11024SRW
Efficiency vs. Output Current
100
90
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
53Vin
110Vin
154Vin
80
Series
Power Dissipation vs Output Current
18.0
16.0
Power Dissipation [W]
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0
53Vin
110Vin
154Vin
Efficiency [%]
90
100
0
10
20
30
40
50
60
70
80
90
100
Output Current [%]
Output Current [%]
OUTPUT TRIM
Output Voltage Trimming
RPA120H-RW converters offer the feature of trimming the output voltage over a certain range around the nominal value by using external trim
resistors. The values for trim resistors shown in trim tables below are according to standard E96 values; therefore, the specified voltage may
slightly vary; they also can be calculated with below shown equation.
TRIM UP
TRIM
R
1
-Sense
TRIM DOWN
R
2
TRIM
Trim Calculation
Vout * (100+DVout) - 2.5 * 120
100
R
1
=
-10
DVout
Vout * 100 * 2.5
(100+DVout)
100
R
2
=
(100-D Vout)
Vout - Vout *
100
10 * Vout *
+Sense
Vout
R1
R2
= Output Voltage
= trim up resistor
= trim down resistor
DVout
= Output Voltage Change in %
Practical Example:
Trim Up:
Vout = 12V,
DVout
= +10% (13.2V)
12 *
(100+10)
- 2.5 * 120
1284
100
-10 =
- 10 = 418
kΩ
10
3
12 * * 2.5
100
R
1
=
Trim down:
Vout = 12V,
DVout
= -10% (10.8V)
(100-10)
10*12*0.9
108
100
=
=
= 90kΩ
R
2
=
(100-10)
12-12*0.9
1.2
12 - 12 * 100
10 * 12 *
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continued on next page
REV.: 3/2018
PB-3
RPA120H-RW
DC/DC Converter
Specifications
(measured @Ta = 25°C, resistive load, nominal Vin and rated Iout unless otherwise noted)
RPA120H-11012SRW
Trim up
Vout =
R
U
=
1
12.12
3830
2
12.24
1960
3
12.36
1300
4
12.48
976
5
12.60
787
6
12.72
665
7
12.84
576
8
12.96
511
9
13.08
464
10
13.20
422
%
Volts
kOhms
Series
RPA120H-11015SRW
Trim up
Vout =
R
U
=
Trim up
Vout =
R
U
=
1
15.15
5490
2
15.30
2550
3
15.45
1740
4
15.60
1300
5
15.75
1050
6
15.90
887
7
16.05
768
8
16.20
681
9
16.35
604
10
16.50
549
%
Volts
kOhms
RPA120H-11024SRW
1
24.24
8660
2
24.48
4420
3
24.72
2940
4
24.96
2210
5
25.20
1820
6
25.44
1540
7
25.68
1300
8
25.92
1150
9
26.16
1050
10
26.40
953
%
Volts
kOhms
Trim down RPA120H series
Trim down
R
D
=
1
976
2
487
3
324
4
243
5
191
6
154
7
133
8
115
9
100
10
90.9
%
kOhms
Remote Sense
+Vin
+Vout
+Sense
R1
Load
Trim
R2
-Sense
-Vin
-Vout
(GND)
RW2
RW1
The output voltage can be adjusted by both trim and remote sense. The
maximum combined adjustment range ±10%. Derate the maximum out-
put power if using the trim or sense function.
RW1 ... wire losses +
RW2 ... wire losses -
R1 ... trim up resistor
R2 ... trim down resistor
REGULATION
Parameter
Output Accuracy
Line Regulation
Load Regulation
Transient Response
Vin = 53 to 154V, Io = full load
Vin = 110V, Io = Io min to Io max.
110V, 0.1A/µs
50% Iout max to 75%
75% Iout max to 50%
Condition
Value
±0.5% max.
±0.01% typ. to ±0.2% max.
0.05% typ. to 0.2% max.
300mV typ., 600mV max.
300mV typ., 600mV max.
PROTECTION
Parameter
Over Voltage Protection (OVP)
Over Current Protection (OCP)
Over Temperature Protection (OTP)
Isolation Voltage
Isolation Resistance
Notes:
Note3: Refer to local wiring regulations if input over-current protection is also required. Recommended fuse: 7.5A slow blow
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REV.: 3/2018
PB-4
Condition
Over full temp. range; % of nom. Vout
Value
110-130%, Hiccup Mode, auto restart after fault condition is removed
Hiccup Mode
115°C, automatic recovery after cooling down
I/P to O/P
I/P to Base
O/P to Base
reinforced I/P to O/P
rated for 1 minute
3kVDC
1.5kVDC
0.5kVDC
3kVDC
10MΩ min.
RPA120H-RW
DC/DC Converter
Specifications
(measured @Ta = 25°C, resistive load, nominal Vin and rated Iout unless otherwise noted)
ENVIRONMENTAL
Parameter
Operating Temperature Range
Maximum Case Temperature
Temperature Coefficient
vertical direction by natural convection (0.1m/s) without Heat-sink
0.2m/s
vertical direction by forced air
without Heat-sink
Thermal Impedance
(4)
0.5m/s
1.0m/s
1.5m/s
2.0m/s
vertical direction by natural convection (0.1m/s) with Heat-sink
0.2m/s
vertical direction by forced air
with Heat-sink
0.5m/s
1.0m/s
1.5m/s
2.0m/s
Operating Altitude
Operating Humidity
Pollution Degree (PD)
MTBF
according to MIL-HDBK-217F standard, 25°C
Series
Condition
Value
refer to derating graph
100°C
0.007%/°C
8.37°C/W
5.8°C/W
5.3°C/W
4.9°C/W
3.8°C/W
3.2°C/W
6.8°C/W
4.5°C/W
4.2°C/W
3.2°C/W
2.5°C/W
2.1°C/W
2000m
95% RH
PD2
1302 x 10
3
h
Thermal Calculation
R
thcase-ambient
= 3.8°C/W (vertical)
R
thcase-ambientHC
= 2.5°C/W (vertical)
R
thcase-ambient
=
T
case
- T
ambient
P
dissipation
P
OUTapp
h
- P
OUTapp
T
case
T
ambient
P
dissipation
P
IN
P
OUT
h
R
thcase-ambient
=
=
=
=
=
=
=
Case Temperature
Environment Temperature
Internal losses
Input Power
Output Power
Efficiency under given Operating Conditions
Thermal Impedance
P
dissipation
= P
IN
- P
OUT
=
Practical Example:
Take the RPA120H-11015SRW with 53V input Voltage and 50% load. What is the maximum ambient operating temperature? Use converter vertical in application with
1.5m/s airflow.
Eff
min
= 88.5% @ V
nom
P
OUT
= 100W
P
OUTapp
= 100.5 x 0.5 = 50.25W
h =
88% (Efficiency vs. Load Graph)
P
dissipation
= 50.25 - 50.25 = 6.9W
0.88
without Heat-sink
R
th
=
T
casemax
- T
amb
100-T
amb
--> 3.8°C/W =
6.9W
P
dissipation
with Heat-sink
R
thHC
=
T
casemax
- T
amb
100-T
amb
--> 2.5°C/W =
P
dissipation
6.9
T
amb
= 73°C
T
ambHC
= 82°C
Notes:
Note4: Recommended Heat-sink BK-05-0543 (http://www.broadlake.com)
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REV.: 3/2018
PB-5
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