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date
08/24/2021
page
1 of 7
SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
FEATURES
input
voltage
output
voltage
W\S
(Vdc)
range
(Vdc)
PQA30-D24-S3-D
24
18~36
PQA30-D24-S5-D
24
18~36
PQA30-D24-S9-D
24
18~36
24
18~36
24
18~36
output
current
output
power
ripple
and noise1
HϒFLHQF\
min
(A)
max
(A)
max
(W)
max
(mVp-p)
W\S
(%)
3.3
0.60
6
20
120
87
5
0.60
6
30
120
88
9
0.333
3.333
30
120
88
12
0.25
2.5
30
120
88
15
0.20
2
30
120
89
SC
ON
PQA30-D24-S12-D
PQA30-D24-S15-D
(Vdc)
NU
MODEL
ED
up to 30 W isolated output
2:1 input range (18~36 Vdc, 36~75 Vdc)
smaller package
single, regulated output
1,500 Vdc isolation
short circuit, over current, and over voltage protections
remote on/off
operating temperature range (-40~85°C)
six sided metal shielding
efficiency up to 89%
EN 62368-1
TI
•
•
•
•
•
•
•
•
•
•
•
PQA30-D24-S24-D
24
18~36
24
0.125
1.25
30
120
89
PQA30-D48-S3-D
48
36~75
3.3
0.60
6
20
120
87
PQA30-D48-S5-D
48
36~75
5
0.60
6
30
120
88
PQA30-D48-S12-D
48
36~75
12
0.25
2.5
30
120
89
PQA30-D48-S15-D
48
36~75
15
0.20
2
30
120
89
PQA30-D48-S24-D
48
36~75
24
0.125
1.25
30
120
88
Notes:
1. Ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1 µF ceramic and 10 µF electrolytic capacitors on the output.
DI
PART NUMBER KEY
PQA30 - DXX - SXX - DX
Base Number
Input Voltage
Output Voltage
Notes:
*Discontinued heatsink versions.
cui.com
Packaging Style
DIP
Heatsink*
"blank" = no heatsink
H = with heatsink
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 2 of 7
INPUT
conditions/description
operating input voltage
24 Vdc input models
48 Vdc input models
start-up voltage
24 Vdc input models
48 Vdc input models
under voltage shutdown
24 Vdc input models
48 Vdc input models
surge voltage
for maximum of 1 second
24 Vdc input models
48 Vdc input models
start-up time
nominal input, constant load
min
W\S
max
units
18
36
24
48
36
75
Vdc
Vdc
17.8
35.8
18
36
Vdc
Vdc
16
32
Vdc
Vdc
UE
D
parameter
-0.7
-0.7
50
100
Vdc
Vdc
10
ms
1
mA
models ON (CTRL open or connect TTL high level, 2.5~12 Vdc)
CTRL1
models OFF (CTRL connect GND or low level, 0~1.2 Vdc)
¿OWHU
SL¿OWHU
input current (models OFF)
1. CTRL pin voltage is referenced to GND.
OUTPUT
parameter
conditions/description
line regulation
load regulation
IN
Note
W\S
max
units
full load, input voltage from low to high
±0.2
±0.5
%
10% to 100% load
±0.5
±1
%
±1
±3
%
DI
SC
ON
T
voltage accuracy
min
adjustability
±10
%
switching frequency
PWM mode
300
transient recovery time
25% load step change
300
500
kHz
transient response deviation
25% load step change
±3
±5
WHPSHUDWXUHFRHϒFLHQW
100% load
±0.02
NjV
%
%/°C
PROTECTIONS
parameter
conditions/description
short circuit protection
hiccup, automatic recovery
over current protection
over voltage protection
3.3 Vdc output models
5 Vdc output models
9 Vdc output models
12 Vdc output models
15 Vdc output models
24 Vdc output models
cui.com
min
120
W\S
max
130
150
3.96
6
10.8
15
18
28
units
%
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 3 of 7
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
input to output for 1 minute at 1 mA max.
1,500
min
W\S
max
units
Vdc
1,000
0
input to output at 500 Vdc
FHUWL¿HGWR(1
conducted emissions
CISPR22/EN55022 class A (no circuit required); class B (external circuit required, see Figure 1-b)
radiated emissions
CISPR22/EN55022 class A (no circuit required); class B (external circuit required, see Figure 1-b)
ESD
IEC/EN61000-4-2 class B, contact ± 4kV
radiated immunity
IEC/EN61000-4-3 class A, 10V/m
EFT/burst
IEC/EN61000-4-4 class B, ± 2kV (external circuit required, see Figure 1-a)
surge
IEC/EN61000-4-5 class B, ± 2kV (external circuit required, see Figure 1-a)
conducted immunity
IEC/EN61000-4-6 class A, 3 Vr.m.s
voltage dips & interruptions
IEC/EN61000-4-29 class B, 0%-70%
MTBF
as per MIL-HDBK-217F @ 25°C
RoHS
2011/65/EU
NU
Note
1,000,000
1. CE mark is only on models without heatsink.
ENVIRONMENTAL
conditions/description
see derating curves
storage temperature
min
non-condensing
case temperature
at full load, operating temperature curve range
DI
SC
ON
storage humidity
vibration
W\S
hours
max
units
-40
85
°C
-55
125
°C
5
95
%
105
°C
10
G
TI
parameter
operating temperature
ED
isolation resistance
safety approvals1
10~55Hz, 30 min. along x, y, and z axis
SOLDERABILITY
parameter
conditions/description
max
units
hand soldering
1.5 mm from case for 10 seconds
min
W\S
300
°C
wave soldering
VHHZDYHVROGHULQJSUR¿OH
260
°C
max
units
MECHANICAL
parameter
conditions/description
dimensions
board mount: 50.80 x 25.40 x 11.80
board mount with heatsink: 50.80 x 25.40 x 16.30
min
case material
aluminum alloy
weight
board mount
board mount with heatsink
W\S
mm
mm
22
35
cui.com
g
g
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 4 of 7
MECHANICAL DRAWING
BOARD MOUNT
units: mm[inch]
tolerance: ±0.30[±0.012]
pin diameter tolerance: ±0.10[±0.004]
pin height tolerance: ±0.50[±0.020]
PIN CONNECTIONS
Function
Ctrl
4
Trim
5
0V
6
+Vo
4.10 [0.161]
Front View
5
2
6
1
50.80[2.000]
45.72[1.800]
6
1
2
5
3
PCB Layout
Top View
TI
4
Bottom View
SC
ON
10.16
[0.400]
NU
3
∅1.00[0.039]
4
3
25.40[1.000]
GND
10.16 10.16
[0.400] [0.400]
Vin
2
5.08[0.200]
1
2.54
[0.100]
PIN
Grid Size:
2.54mm x 2.54mm
ED
11.80
[0.465]
∅1.50 [0.059]
BOARD MOUNT WITH HEATSINK
units: mm[inch]
tolerance: ±0.30[±0.012]
pin diameter tolerance: ±0.10[±0.004]
pin height tolerance: ±0.50[±0.020]
∅1.50 [0.059]
Grid Size:
2.54mm x 2.54mm
PIN CONNECTIONS
PIN
Function
1
Vin
2
GND
3
Ctrl
4
Trim
0V
DI
5
6
+Vo
Top View
4
3
5
2
6
1
PCB Layout
Top View
Front View
cui.com
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 5 of 7
EMC RECOMMENDED CIRCUIT
NU
ED
DERATING CURVES
Table 1
Recommended external circuit components
TI
Figure 1
Vin (Vdc)
24
FUSE
choose according to input current
CO
N
MOV
TEST CONFIGURATION
S14K35
56µH
56µH
TVS
SMCJ48A
SMCJ90A
C0
330µF/50V
330µF/100V
C1, C2
4.7µF/50V
2.2µF/100V
LCM1
1mH
1mH
CY1, CY2
1nF/2kV
1nF/2kV
DI
S
Table 2
External components
Lin
Nj+
Cin
Nj)(65
at 100 kHz
,QSXWUHÀHFWHGULSSOHFXUUHQWLVPHDVXUHGZLWKDQLQGXFWRU/LQDQG&DSDFLWRU&LQWRVLPXODWHVRXUFHLPSHGDQFH
cui.com
S14K60
LDM1
Figure 2
1RWH
48
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 6 of 7
APPLICATION NOTES
Requirement on output load
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operation. If the actual output power is small, please connect a resistor at the output end in parallel to increase the load.
2.
Recommended circuit
This series has been tested according to the following recommended testing circuit before leaving the factory. This series should be
tested under load (see Figure 3). If you want to further decrease the input/output ripple, you can increase capacitance properly or
choose capacitors with low ESR (see Table 3). However, the capacitance must not exceed the maximum capacitive load or a start-up
problem might arise (see Table 4).
Figure 3
UE
D
1.
Table 3
Cin
(µF)
Cout
(µF)
Vout
(Vdc)
Max.
&DSDFLWLYH/RDGNj)
3.3
100
220
3.3
6800
5
100
220
5
6800
IN
Vout
(Vdc)
9
100
100
9
680
12
100
100
12
680
15
100
100
15
680
24
100
47
24
470
SC
ON
T
3.
Table 4
Output Voltage Trimming
Leave open if not used.
Figure 4
Formula for Trim Resistor
Application Circuit for Trim Pin
(part in broken line is the interior of models)
up: RT =
aR2
-R3
R 2-a
a=
Vref
R1
Vo’-Vref
down: R T =
aR1
-R3
R 1-a
a=
Vo’-Vref
R2
Vref
Note:
DI
Notes:
Value for R1, R2, R3, and Vref (see Table 5)
RT: Trim Resistor
D8VHUGH¿QHGSDUDPHWHUQRDFWXDOPHDQLQJV
Vo': The trim up/down voltage
Table 5
Vout
(Vdc)
R1
N
R2
N
R3
N
Vref
(V)
3.3
4.801
2.863
12
1.24
5
2.883
2.864
10
2.5
9
7.5
2.864
15
2.5
12
10.971
2.864
15
2.5
15
14.497
2.864
15
2.5
24
24.872
2.863
20
2.5
1. Minimum load shouldn't be less than 10%, otherwise ripple may increase dramatically. Operation under minimum load will not damage the converter, however, they may
QRWPHHWDOOVSHFL¿FDWLRQVOLVWHG
2. Maximum capacitive load is tested at input voltage range and full load.
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CUI Inc Ϳ SERIES: PQA30-D Ϳ DESCRIPTION: DC-DC CONVERTER
date 08/24/2021 Ϳ page 7 of 7
REVISION HISTORY
rev.
description
date
initial release
07/08/2014
discontinued heat sink versions
06/21/2019
1.02
safeties updated in features and safety approvals line
01/19/2021
GHUDWLQJFXUYHVDQGFLUFXLW¿JXUHVXSGDWHG
08/24/2021
1.03
ED
1.0
1.01
DI
S
CO
N
TI
NU
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
techsupport@cui.com
&8,RϑHUVDWZR\HDUOLPLWHGZDUUDQW\&RPSOHWHZDUUDQW\LQIRUPDWLRQLVOLVWHGRQRXUZHEVLWH
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
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