• 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 89%
• UL/cUL safety approval
MODEL
typ
(Vdc)
input
voltage
range
(Vdc)
output
voltage
(Vdc)
min
(A)
output
current
max
(A)
output
power
max
(W)
ripple
& noise
1
max
(mVp-p)
efficiency
typ
(%)
PRD15-Q24-S3
PRD15-Q24-S5
PRD15-Q24-S12
PRD15-Q24-S15
PRD15-Q48-S3
PRD15-Q48-S5
PRD15-Q48-S12
PRD15-Q48-S15
24
24
24
24
48
48
48
48
9~36
9~36
9~36
9~36
18~75
18~75
18~75
18~75
3.3
5
12
15
3.3
5
12
15
0.45
0.3
0.13
0.11
0.5
0.3
0.13
0.11
4.5
3
1.3
1.1
5
3
1.3
1.1
14.85
15
15.6
16.5
16.5
15
15.6
16.5
90
125
150
175
90
95
120
120
89
87.3
84.5
85
88
86
85
85.3
Notes:
1. At full load, nominal input, 20 MHz bandwidth oscilloscope, input terminated with a 100 μF capacitor for 24 Vdc input models and a 4.7 μF capacitor for 48 Vdc input
models. 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 100 μF
capacitor for 24 Vdc input models and a 4.7 μF capacitor for 48 Vdc input models on the input, and with 1 μF and 10 μF low ESR capacitors on the output.
PART NUMBER KEY
PRD15
-
QXX - SXX
-
X
-
X
-
X
Base Number
Input Voltage
Output Voltage
Packaging Style:
D = DIP
M = SMT
Package Options:
“blank” = standard
(through hole
models only)
TR = Tape & Reel
(SMT models only)
Remote On/Off Control:
P = positive logic
N = negative logic
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CUI Inc
│
SERIES:
PRD15
│
DESCRIPTION:
DC-DC CONVERTER
date
03/28/2016
│
page
2 of 14
INPUT
parameter
operating input voltage
current
start-up voltage
conditions/description
24 Vdc input models
48 Vdc input models
24 Vdc input models
48 Vdc input models
24 Vdc input models
48 Vdc input models
PRD15-Q24-S3
PRD15-Q24-S5
PRD15-Q24-S12, PRD15-Q24-S15
PRD15-Q48-S15
all other models
positive logic
remote on/off
1
negative logic
filter
models ON (10~15 Vdc or open circuit)
models OFF (-0.7~0.7 Vdc)
models ON (-0.7~0.8 Vdc)
models OFF (10~15 Vdc or open circuit)
8.8
16.7
8.6
8.5
8.4
16.2
15.6
min
9
18
typ
24
48
max
36
75
2.1
1.1
units
Vdc
Vdc
A
A
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
under voltage shutdown
PRD15-Q48-S5: inductance filter
all other models: capacitance filter
recommended to add fuse:
4 A fast blow fuse for 24 Vdc input models
2 A fast blow fuse for 48 Vdc input models
1.5 A fast blow fuse for PRD15-Q48-S12 model
input reverse polarity protection no
input fuse
Notes:
1. On/Off current is 1 mA.
OUTPUT
parameter
maximum capacitive load
conditions/description
low ESR <0.02 Ω
PRD15-Q24-S3, S5, S12 & PRD15-Q48-S3
all other models
PRD15-Q48-S3
PRD15-Q48-S12
all other models
PRD15-Q24-S3
PRD15-Q24-S5
PRD15-Q48-S3
PRD15-Q48-S5
all other models
at 50% load
see application notes
PRD15-Q24-S12, PRD15-Q24-S15
PRD15-Q48-S5
PRD15-Q48-S15
all other models
50-75-50% load change to 1% Vout
PRD15-Q24-S3, PRD15-Q24-S12
all other models
±1
50
±10
340
375
380
350
150
100
±0.02
min
typ
max
1,000
470
±0.2
±0.075
±0.05
±0.1
±0.075
±0.2
±0.06
±0.05
units
μF
μF
%
%
%
%
%
%
%
%
%
ms
%
kHz
kHz
kHz
kHz
µs
µs
%/°C
line regulation
load regulation
voltage accuracy
start-up time
adjustability
2
switching frequency
dynamic load response
temperature coefficient
Note:
2. For input voltage < 20 Vdc, PRD15-Q48-S5 can only be trimmed down.
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CUI Inc
│
SERIES:
PRD15
│
DESCRIPTION:
DC-DC CONVERTER
date
03/28/2016
│
page
3 of 14
PROTECTIONS
parameter
conditions/description
auto restart
PRD15-Q24-S3
PRD15-Q24-S5
PRD15-Q24-S12
PRD15-Q24-S15
PRD15-Q48-S3
PRD15-Q48-S5
PRD15-Q48-S12
PRD15-Q48-S15
current limiting, auto restart
PRD15-Q24-S3
PRD15-Q24-S5
PRD15-Q24-S12
PRD15-Q24-S15
PRD15-Q48-S3
PRD15-Q48-S5
PRD15-Q48-S12
PRD15-Q48-S15
current limiting, hiccup auto restart
PRD15-Q48-S12
all other models
min
typ
4.5
5.9
14.1
19.5
3.9
5.9
15
20
6.0
4.6
2.0
1.6
7.2
4.5
1.8
1.7
0.3
135
115
max
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
A
A
A
A
A
A
A
A
°C
°C
over voltage protection
over current protection
short circuit protection
over temperature protection
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
isolation capacitance
safety approvals
LVD
1
conditions/description
input to output, basic insulation
24 Vdc input models
48 Vdc input models
min
typ
2,000
2,250
max
units
Vdc
Vdc
MΩ
pF
pF
10
PRD15-Q24-S5, PRD15-Q24-S15, PRD15-Q48-S3
all other models
UL 60950-1, 2nd Edition
2006/95/EC (CE mark)
as per Telcordia SR-332 Method 1, Case 3, ground
fixed conditions, Tpcboard = 25 °C, full load,
natural air convection.
2011/65/EU
2,000,000
1,500
1,000
MTBF
RoHS
Note:
hours
1. CE mark only on 48 Vdc input models.
ENVIRONMENTAL
parameter
operating temperature
storage temperature
conditions/description
see derating curves
min
-40
-55
typ
max
85
125
units
°C
°C
cui.com
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product page.
CUI Inc
│
SERIES:
PRD15
│
DESCRIPTION:
DC-DC CONVERTER
date
03/28/2016
│
page
4 of 14
SOLDERABILITY
parameter
conditions/description
for Sn/Ag/Cu based solders (for through hole
models):
preheat temperature
solder pot temperature
solder dwell time
reflow solder profile below is suitable for SAC305
type lead-free solders (for surface mount models)
260
240
220
180
160
140
120
100
80
60
40
20
0
1
2
3
4
5
6
7
min
typ
max
units
wave soldering
115
270
7
245
260
°C
°C
s
°C
reflow soldering
optimal peak 245 ˚C, max peak 260 ˚C
SAC305 liquidus at 219 °C
ramp at 1 °C/second across liquidus
TAL at 60 seconds (range 45-75 seconds)
Temperature (°C)
ad
st
ju
m
ra
ep
p
r
fo
p
ak
so
t
ra
es
if
re
ire
qu
r
2
d
/s
e
nd
co
cooling rate 2-3 °C/second
°C
de
un
m
ra
ke
Time (minutes)
MECHANICAL
parameter
dimensions
weight
conditions/description
min
typ
max
units
inches
inches
10
10.2
g
g
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]
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