Datenblatt

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date
05/20/2016
page
1 of 13
SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
•
•
•
up to 25 W isolated output
industry standard 1” x 1” package
2:1 input range
low ripple & noise
over voltage, over current, short circuit, and over
temperature protections
remote on/off control
output trim
-40 to 85°C temperature range
efficiency up to 91%
UL/cUL safety approval
MODEL
input
voltage
output
voltage
output
current
output
power
ripple
& noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(A)
max
(A)
max
(W)
max
(mVp-p)
typ
(%)
PRD25-D48-S3
48
36~75
3.3
0.75
7.5
25
80
89.5
PRD25-D48-S5
48
36~75
5
0
5
25
80
91
PRD25-D48-S12
48
36~75
12
0
2.1
25.2
120
87.5
Notes:
1. At full load, nominal input, 20 MHz bandwidth oscilloscope, input terminated with a 4.7 μF capacitor. Output terminated with 1 μF and 10 μF low ESR capacitors.
2. All specifications are measured at Ta=25°C, nominal input voltage, and rated output load unless otherwise specified. All models are tested and specified with a 4.7 μF on the input, and with 1 μF and 10 μF low ESR capacitors on the output.
PART NUMBER KEY
PRD25 - DXX - SXX - X - X - X
Base Number
Input Voltage
Output Voltage
Remote On/Off Control:
P = positive logic
N = negative logic
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Packaging Style:
D = DIP
M = SMT
Package Options:
“blank” = standard
(through hole
models only)
TR = Tape & Reel (SMT models only)
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 2 of 13
INPUT
parameter
conditions/description
operating input voltage
min
typ
max
units
36
48
75
Vdc
0.81
0.79
0.842
A
A
A
current
at nominal Vin
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
start-up voltage
rising input voltage
3.3, 12 Vdc output models
5 Vdc output models
34
34
35.2
35
36
36
Vdc
Vdc
under voltage shutdown
falling input voltage
3.3, 12 Vdc output models
5 Vdc output models
32
32
34
33.5
35.2
34.5
Vdc
Vdc
min
typ
max
units
2,000
470
μF
μF
±0.1
±0.075
%
%
±0.2
±0.05
%
%
3.3 Vdc output models
positive logic
negative logic
remote on/off1
ON (10~15 Vdc or open circuit)
OFF (-0.7~1.2 Vdc)
ON (-0.7~1.2 Vdc)
OFF (10~15 Vdc or open circuit)
5, 12 Vdc output models
positive logic
negative logic
ON (10~15 Vdc or open circuit)
OFF (-0.7~0.7 Vdc)
ON (-0.7~0.8 Vdc)
OFF (10~15 Vdc or open circuit)
3.3, 5 Vdc output models: LC filter
12 Vdc output models: capacitance filter
filter
input reverse polarity protection no
input fuse
Notes:
recommended to add 1.5 A fast blow fuse
1. On/Off current is 1 mA.
OUTPUT
parameter
conditions/description
maximum capacitive load
low ESR <0.02 Ω, full load
3.3, 5 Vdc output models
12 Vdc output models
line regulation
50% load, input voltage from low to high
3.3, 5 Vdc output models
12 Vdc output models
load regulation
at nominal Vin, 0~100% load
3.3, 5 Vdc output models
12 Vdc output models
voltage accuracy
at 50% load
±1
start-up time
50
adjustability
see application notes
switching frequency
3.3, 5 Vdc output models
12 Vdc output models
dynamic load response
%
±10
300
295
ms
%
330
325
360
355
kHz
kHz
50-75-50% load change to 2% Vout
3.3 Vdc output models
5 Vdc output models
180
200
250
µs
µs
50-75-50% load change to 1% Vout
12 Vdc output models
100
200
µs
temperature coefficient
±0.02
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%/°C
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 3 of 13
PROTECTIONS
parameter
conditions/description
min
typ
max
units
over voltage protection
via magnetic feedback
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
4.2
6
14
5
6.5
19
5.7
7.5
22
Vdc
Vdc
Vdc
over current protection
current limiting
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
8.5
5.3
2.3
10
6.8
3
11
7.3
3.4
A
A
A
short circuit protection
current limiting, hiccup auto restart
over temperature protection
3.3, 5 Vdc output models
12 Vdc output models
110
130
115
135
120
150
°C
°C
min
typ
max
units
0.3
A
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
input to output, continuous, basic insulation
isolation resistance
isolation capacitance
safety approvals
UL 60950-1, 2nd Edition
LVD
2006/95/EC (CE mark)
conducted emissions1
EN55022/CISPR22, Class B
(external circuit required, see Figure 3)
radiated emissions1
EN55022/CISPR22, Class B
(external circuit required, see Figure 3)
MTBF
as per Telcordia SR-332 Method 1, Case 3, ground
fixed conditions, Ta=40°C
Notes:
Vdc
10
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
RoHS
2,250
MΩ
1,000
2,000
1,700
pF
pF
pF
2,000,000
hours
2011/65/EU
1. Layout and the environment play an influential role with the filter’s performance. Performance will depend on the user’s PCB layout, the chassis shielding environment, choice of external components, and other circuits present.
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
see derating curves
storage temperature
operating humidity
altitude
non-condensing
derates 1% /1000 ft
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typ
max
units
-40
85
°C
-55
125
°C
10
90
%
-500
-152
10,000
3048
ft
m
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 4 of 13
SOLDERABILITY
parameter
conditions/description
wave soldering
for Sn/Ag/Cu based solders (for through hole
models):
preheat temperature
solder pot temperature
solder dwell time
reflow soldering
reflow solder profile below is suitable for SAC305
type lead-free solders (for surface mount models)
260
min
245
max
units
115
270
7
°C
°C
s
260
°C
optimal peak 245 ˚C, max peak 260 ˚C
240
TAL at 60 seconds (range 45-75 seconds)
SAC305 liquidus at 219 °C
220
Temperature (°C)
typ
ramp at 1 °C/second across liquidus
180
160
120
r
100
p
80
st
ju
ad
60
40
fo
m
ra
p
e
ke
p
ak
so
t
ra
es
if
q
re
r
de
d
2
cooling rate 2-3 °C/second
d
on
re
ui
140
c
se
/
°C
un
m
ra
20
0
1
2
3
4
5
6
7
Time (minutes)
MECHANICAL
parameter
conditions/description
dimensions
through hole: 1.10 x 0.96 x 0.33 [27.9 x 24.4 x 8.4 mm]
surface mount: 1.10 x 0.96 x 0.33 [27.9 x 24.4 x 8.4 mm]
min
weight
typ
units
inches
inches
9.07
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max
g
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 5 of 13
MECHANICAL DRAWING (THROUGH HOLE)
units: inches [mm]
tolerance: X.XX ±0.02 [0.5]
X.XXX ±0.010 [0.25]
PIN CONNECTIONS
PIN
Function
1
+Vin
2
-Vin
3
+Vout
4
output trim
5
-Vout
6
on/off control
24.4
0.96
PIN #1
27.9
1.10
TOP VIEW
MOUNTING
PLANE
8.4
0.33
SIDE VIEW
.040±.002 PIN DIAMETER
.071 .002 SHOULDER DIAMETER
6X AT PINS 1-6
20.32
0.800
0.58
[14.7]
0.15 TYP
[3.8]
2.54
0.100
0.41
[10.4]
#3
CL
5.08
0.200
#1
#2
#4
0.30
[7.62]
#6
0.475
[12.07]
REF
RECOMMENDED
PRI-SEC BARRIER
10.16
0.400
#5
10.16
0.400
CL
10.16
0.400
6.3
0.25
CL
BOTTOM VIEW
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END VIEW
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 6 of 13
MECHANICAL DRAWING (SURFACE MOUNT)
units: inches [mm]
tolerance: X.XX ±0.02 [0.5]
X.XXX ±0.010 [0.25]
[20.32]
0.800
PIN CONNECTIONS
PIN
Function
1
+Vin
2
-Vin
3
+Vout
4
output trim
5
-Vout
6
on/off control
6X
[2.60 ±0.25]
.102 ±.010
[2.54]
0.100
PIN #1
24.4
0.96
6
5
2
4
1
[2.54]
0.100
3
27.9
1.10
CL
TOP VIEW
[29.0]
1.14
RECOMMENDED PCB LAYOUT
TOP VIEW
MOUNTING
PLANE
0.093 [2.4] TYP
SIDE VIEW
20.32
0.800
0.58
[14.7]
0.15 TYP
[3.8]
2.54
0.100
RECOMMENDED
PRI-SEC BARRIER
0.41
[10.4]
#3
CL
5.08
0.200
#1
#2
#6
#4
0.30
[7.62]
10.16
0.400
#5
CL
BOTTOM VIEW
0.33±.03
[8.4±0.8]
10.16
0.400
CL
10.16
0.400
0.093
[2.4]
0.13 [3.3]
REF
END VIEW
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[10.16]
0.400
CL [25.4]
[10.16]
0.400
1.00
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 7 of 13
DERATING CURVES
PRD25-D48-S3 Derating Curves @ Sea Level
(airflow from input to output)
PRD25-D48-S5 Derating Curves @ Sea Level
(airflow from input to output)
5.0
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
7
0.33 to 2.0 m/s (65 to 400 LFM)
Vin=36V, 48V, 60V
1.0 to 2.0 m/s (200 to 400 LFM)
Vin=75V
6
0
-40
40
45
50
55
60
65
70
75
0.33 to 2.0 m/s (65 to 400 LFM)
Output Current (A)
Output Current (A)
7.5
80
4.9
4.8
4.7
4.6
85
0
Ambient Temperature (°C)
-40
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
PRD25-D48-S12 Derating Curves @ Sea Level
(Vin=48V, airflow from input to output)
Output Current (A)
Output Current (A)
PRD25-D48-S12 Derating Curves @ Sea Level
(Vin=36V, airflow from input to output)
2.1
2.05
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
2.0
1.95
0
-40
70
75
Ambient Temperature (°C)
80
2.1
2.075
2.025
0
-40
-40
70
75
Ambient Temperature (°C)
80
Output Current (A)
Output Current (A)
0
80
85
PRD25-D48-S12 Derating Curves @ Sea Level
(Vin=75V, airflow from input to output)
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
2.025
75
Ambient Temperature (°C)
2.1
2.05
70
85
PRD25-D48-S12 Derating Curves @ Sea Level
(Vin=60V, airflow from input to output)
2.075
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
2.05
2.1
2.05
85
0.33 m/s (65 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
2.0
1.95
0
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-40
70
75
Ambient Temperature (°C)
80
85
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 8 of 13
EFFICIENCY CURVES
PRD25-D48-S5 Efficiency Curve
(Efficiency vs. Line Voltage and Load Current @ 25°C)
92
91
90
89
Efficiency (%)
92
87
82
77
72
67
62
57
52
47
42
37
32
27
22
17
12
7
Vin = 36V
Vin = 48V
Vin = 60V
Vin = 75V
88
87
Vin = 36V
86
Vin = 48V
85
Vin = 60V
84
Vin = 75V
83
82
81
80
79
78
77
76
0.2
0.7
1.2
1.7
2.2
2.7
3.2
3.7
4.2
4.7
5.2
5.7
6.2
6.7
7.2
7.7
75
1.0
1.4
1.8
Load Current (Amps)
2.2
2.6
89
88
87
86
85
Vin = 36V
Vin = 48V
84
Vin = 60V
83
Vin = 75V
82
81
80
79
78
0.4
3.0
3.4
Load Current (Amps)
PRD25-D48-S12 Efficiency Curve
(Efficiency vs. Line Voltage and Load Current @ 25°C)
Efficiency (%)
Efficiency (%)
PRD25-D48-S3 Efficiency Curve
(Efficiency vs. Line Voltage and Load Current @ 25°C)
0.6
0.8
0.9
1.1
1.3
1.4
1.6
Load Current (Amps)
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1.8
1.9
2.1
3.8
4.2
4.6
5.0
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 9 of 13
PACKAGING (THROUGH HOLE)
units: mm [inches]
tolerance: +1/-0 mm
Tray Material: Dow 220 anti-static ethafoam
Tray Size: 252 x 252 x 19.1 mm
QTY: 30 pcs per tray (6 x 5)
6.4
Typ
28.4
Typ
6.4
Typ
[9.92]
252.0
[9.92]
252.0
18.0
5x 38.1
25.4
Typ
R 6.4
Typ
190.5
Ref
A
252.0
Ref
A
9.5 deep
Ref
4x 44.5
22.9
252.0
Ref
177.8
Ref
19.1
Ref
9.5 [.38 in]
Pocket
Depth
19.1 [.75 in]
SECTION A-A
Anti-static foam
Label
Label
Each tray is 6 x 5 units
(30 units per tray)
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 10 of 13
PACKAGING (SURFACE MOUNT)
units: inches [mm]
Tape & Reel: Conforms to EIA-481
Reel Size: Ø13”
QTY: 100 pcs per reel
Note: The SMT package has an MSL 2 rating
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 11 of 13
TEST CONFIGURATIONS
Input Ripple Current & Output Noise
All models are tested and specified for input reflected ripple current and output noise as per layouts shown in Figures 1 &
2. The Cbus and Lbus components simulate a typical DC voltage bus. However, your specific system configuration may
require additional considerations.
Figure 1 Measuring Input Ripple Current
TO
OSCILLOSCOPE
V IN
CURRENT
PROBE 1
Figure 2 Measuring Output Ripple and noise
(PARD)
+VIN
+VOUT
LBUS
+
–
+
–
CBUS
C1
CIN
2
C2
−VOUT
−VIN
Table 1
Table 2
CIN
33µF, ESR < 700mΩ @ 100kHz
CBUS
220µF, ESR < 100mΩ @ 100kHz
LBUS
12µH
C1
1µF
C2
10µF
load 2-3 inches (51-76mm) from module
EMC RECOMMENDED CIRCUIT
Figure 3 Conducted Emissions Test Circuit
Resistive Load
C4
DC Source
SCOPE
UUT
L2
V+
Black
C1
C2
C3
Vin+
Vout+
Vin-
Vout-
C6
L1
V-
C5
Table 3
Recommended External Circuit Components
L1
1 mH, 6 A
L2
4.7 µH, 3.6 A
C1, C2
Electrolytic Capacitor 22 µfd, 100 V
C3
Qty. 2 - Electrolytic Capacitor 22 µfd, 100 V
C4, C5
3.3 nF, 1500 V
C6
Electrolytic Capacitor 22 µfd, 100 V
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Resistive Load
inside a metal
container
R LOAD
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 12 of 13
APPLICATION NOTES
Output Voltage Trimming
The output voltage can be adjusted by using the trim pin and a single fixed resistor (see Figures 4 & 5). Trimming
resistors should have a low temperature coefficient (± 100 ppm/°C or less) and be mounted close to the converter. If the
trim function is not needed, leave the trim pin open.
Figure 4 Trim Adjustments To Decrease
Output Voltage Using A Fixed Resistor
+VIN
ON/OFF
CONTROL
−VIN
Figure 5 Trim Adjustments To Increase
Output Voltage Using A Fixed Resistor
+VIN
+VOUT
TRIM
RTRIM DOWN
ON/OFF
CONTROL
LOAD
−VOUT
−VIN
+VOUT
TRIM
LOAD
RTRIM UP
−VOUT
Note: Rtrim-up is the external resistor in Ω
Rtrim-down is the external resistor in Ω
VO, nom is the nominal output voltage
VO is the desired output voltage
Vout
A
B
C
3.3
12775
2050
5110
5
12775
2050
5110
12
25000
5110
10000
Remote On/Off Control
The DC-DC converter can be ordered with either positive or negative logic. See page 2 for enable/disable details for both
positive and negative logic options. Dynamic control of the On/Off function should be able to sink appropriate signal
current when brought low and withstand appropriate voltage when brought high. Be aware that there is a finite time in
milliseconds between the the time of On/Off control activation and stable, regulated output. This time will vary slightly
with output load type and current and input conditions.
Cautions when using the On/Off control:
1. To retain full output circuit isolation, control the On/Off from the input side only.
2. While it is possible to control the On/Off with external logic if you carefully observe the voltage levels, the
preferred circuit is either an open drain/open collector transistor, a switch, or a relay.
3. Do not apply voltages to the On/Off pin when there is no input power voltage, otherwise the converter may be
permanently damaged.
+VCC
Figure 6. Driving The On/Off Control Pin
(Suggested Circuit)
ON/OFF
CONTROL
-VIN
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CUI Inc │ SERIES: PRD25 │ DESCRIPTION: DC-DC CONVERTER
date 05/20/2016 │ page 13 of 13
REVISION HISTORY
rev.
1.0
description
date
initial release
05/20/2016
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
[email protected]
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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