Datasheet

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date
02/12/2014
page
1 of 6
SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
•
•
•
up to 20 W isolated output
4:1 input range (43~160 V)
smaller package
single/dual regulated outputs
meets European EN50155 railway standard
2,250 Vdc isolation
continuous short circuit, over current protection, over voltage protection
built-in remote on/off
wide operating temperature range (-40~85°C)
efficiency up to 90%
input
voltage
MODEL
output
voltage
output
current
output
power
ripple
and noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
PRF20-Q110-S5
110
43~160
5
0
4000
20
75
88.5
PRF20-Q110-S12
110
43~160
12
0
1670
20
100
90
PRF20-Q110-S15
110
43~160
15
0
1330
20
100
89.5
PRF20-Q110-D12
110
43~160
±12
0
±833
20
100
89
PRF20-Q110-D15
110
43~160
±15
0
±667
20
100
88.5
Note:
1. Ripple and noise are measured at 20 MHz BW by and 1μF ceramic capacitor across each output.
PART NUMBER KEY
PRF20 - Q110 - XXXX
Base Number
Output
S = single
D = dual
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Output Voltage
Remote On/Off Control
"blank" = positive logic
N = negative logic
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CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
date 02/12/2014 │ page 2 of 6
INPUT
parameter
conditions/description
operating input voltage
under voltage shutdown
for maximum of 100 ms
start-up time
single output models
dual output models
positive logic
CTRL1
negative logic
Note:
typ
max
units
43
110
160
Vdc
power up
power down
surge voltage
filter
min
40
38
Vdc
Vdc
200
15
25
Vdc
ms
ms
models ON (open or 3.5~75 Vdc)
models OFF (0~1.2 Vdc)
models ON (0~1.2 Vdc)
models OFF (open or 3.5~75 Vdc)
pi filter
1. Open collector refer to -Vin.
OUTPUT
parameter
conditions/description
maximum capacitive load
min
typ
max
units
5V output model
12V output model
15V output model
±12V output model
±15V output model
5600
1000
1000
±680
±350
μF
μF
μF
μF
μF
line regulation
from high line to low line
±0.2
%
load regulation
from full load to no load
single output models
dual output models
±0.5
±1
%
%
cross regulation
dual output models, load cross variation 10%/100%
±5
%
±1.5
%
voltage accuracy
adjustability
2
switching frequency
transient response
±10
%
250
KHz
25% load step change
temperature coefficient
Note:
250
μs
±0.03
%/°C
max
units
160
%
2. Output trimming available on single output models only
PROTECTIONS
parameter
conditions/description
short circuit protection
continuous
min
over current protection
over voltage protection
typ
110
protected by internal zener or TVS clamp
5V output model
12V output model
15V output model
±12V output model
±15V output model
6.2
15
18
±15
±18
Vdc
Vdc
Vdc
Vdc
Vdc
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
input to output for 1 minute
min
isolation resistance
safety approvals
UL60950-1
EMI/EMC
EN55022 class A, EN50155 (external circuit required)
RoHS
2011/65/EU
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typ
max
units
2,250
Vdc
1000
MΩ
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CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
date 02/12/2014 │ page 3 of 6
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating temperature
see derating curve
-40
85
°C
-55
125
°C
95
%
105
°C
max
units
260
°C
storage temperature
humidity
typ
non-condensing
case temperature
vibration
EN50155 (EN61373)
SOLDERABILITY
parameter
conditions/description
wave soldering
see wave soldering profile
min
typ
Notes:
1.
2.
3.
4.
5.
Temperature (°C)
300
Soldering materials: Sn/Cu/Ni
Ramp up rate during preheat: 1.4°C/s (from 50°C to 100°C)
Soaking temperature: 0.5°C/s (from 100°C to 130°C), 60±20 seconds
Peak temperature: 260°C, above 250°C for 3~6 seconds
Ramp down rate during cooling: -10°C/s (from 260°C to 150°C)
250
200
150
100
50
0
0
20
40
60
80
100
120
140
160
180
Time (Seconds)
MECHANICAL
parameter
conditions/description
min
dimensions
2.00 x 1.00 x 0.40 (50.8 x 25.4 x 10.2 mm)
case material
black coated copper with non-conductive base
typ
max
units
inch
weight
35
g
MECHANICAL DRAWING
units: inch[mm]
tolerance: X.XX = ±0.02[±0.5]
X.XXX = ±0.010[±0.25]
1.3 mm Plated Through hole
2.5 mm Pad Size
2.00
[50.8]
2.00
[50.8]
1.800
[45.72]
0.10
[2.5]
0.400
[10.16]
6
0.400
[10.16]
5
2
1
0.10
[2.5]
3
0.20
[5.1]
0.10
[2.5]
4
0.22 min.
[5.6]
PCB Layout
Top View
0.40
[10.2]
Bottom View
0.200
[5.08]
0.600
[15.24]
1.00
[25.4]
0.400
[10.16]
5
2
6
0.200
[5.08]
0.20
[5.1]
0.600
[15.24]
1
0.400
[10.16]
3
4
0.10
[2.5]
Front View
0.040
[1.02]
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PIN CONNECTIONS
Pin
Single
Dual
1
+Vin
+Vin
2
-Vin
-Vin
3
+Vout
+Vout
4
Trim
-Vout
5
-Vout
common
6
Remote ON/OFF
1.00
[25.4]
1.800
[45.72]
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CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
date 02/12/2014 │ page 4 of 6
DERATING CURVES
Temperature Derating Curve
Load (%)
100
80
60
Safe operating area
40
20
-40
-20
0
20
40
60
73 80
105
120
Ambient Temperature (°C)
EMC RECOMMENDED CIRCUIT
EN50155(EN50121-3-2)
Figure 1
Table 1
FUSE
External components
+Vin
+Vo
3A time delay fuse
TVS
+
Vin
TVS
R-Load
-
-Vin
-Vo
TEST CONFIGURATION
Figure 2
Table 2
To Oscilloscope
External components
L1
+Vin
+Vo
+
Vin
Cin
R-Load
-
-Vin
Note:
-Vo
Input reflected-ripple current is measured with an inductor L1 to simulate source impedance.
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Lin
12μH
Cin
22μF, ESR < 0.2Ω at 100 KHz
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CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
date 02/12/2014 │ page 5 of 6
APPLICATION NOTES
Output Voltage Trimming
Leave open if not used.
Figure 3
Application Circuit for Trim pin
+Vin
Formula for Trim Resistor
+Vo
Rtrim - up = (
Trim
Trim up
R-Load
R trim-up
-Vin
+Vin
Vr x R1
-1) - Rt (KΩ)
(Vo, nom - Vo) x R2
+Vo
R trim-down
R-Load
Trim
-Vin
Rtrim - down = R1 x (
-Vo
Trim down
-Vo
Note: Rtrim-up is the external resistor in KΩ
Rtrim-down is the external resistor in KΩ
VO, nom is the nominal output voltage
VO is the desired output voltage
R1, R2, R3, Rt, and Vr are internal (see table 3).
Table 3
Note:
Vr x R1 x (R2 + R3)
) - Rt (KΩ)
(Vo - Vo, nom) x R2
Vout
(Vdc)
R1
(KΩ)
R2
(KΩ)
Rt
(KΩ)
Vr
(V)
5
2.32
2.32
0
8.2
2.5
12
6.8
2.4
2.32
22
2.5
15
8.06
2.4
3.9
27
2.5
1. All specifications are measured at Ta=25°C, nominal input voltage and full output load unless otherwise specified.
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R3
(KΩ)
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CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER
date 02/12/2014 │ page 6 of 6
REVISION HISTORY
rev.
1.0
description
date
initial release
02/12/2014
The revision history provided is for informational purposes only and is believed to be accurate.
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Fax 503.612.2383
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[email protected]
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