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date
01/10/2023
page
1 of 8
SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
•
3W isolated output
ultra-wide input voltage range
single regulated output
high efficiency up to 82%
output short circuit, over current, over voltage protection
1500 Vdc isolation
available with or without case
designed to meet EN/BS EN 62368
MODEL
input
voltage
output
voltage
output
current
output
power
ripple
& noise
efficiency2
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
PYBJ3-D5-S5
5
4.5~9
5
0
600
3
100
72
PYBJ3-D5-S12
5
4.5~9
12
0
250
3
100
76
PYBJ3-D5-S15
5
4.5~9
15
0
200
3
100
77
PYBJ3-D5-S24
5
4.5~9
24
0
125
3
100
76
PYBJ3-D24-S3
24
9~36
3.3
0
600
2
100
72
PYBJ3-D24-S5
24
9~36
5
0
600
3
100
77
PYBJ3-D24-S12
24
9~36
12
0
250
3
100
81
PYBJ3-D24-S15
24
9~36
15
0
200
3
100
82
PYBJ3-D24-S24
24
9~36
24
0
125
3
100
81
Notes:
1. PYBJ3-Dxx-Sxx-x contains 4 types of products, include DIP package without case, DIP package with case, SMD package without case and SMD package with case.
2. Efficiency is measured In nominal input voltage and rated output load.
PART NUMBER KEY
PYBJ3 - DXX - SXX - X X
Base Number
Input Voltage
Output Voltage
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Case:
“blank” = with case
O = no case
Mounting Style:
D = DIP
M = SMT
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 2 of 8
INPUT
parameter
conditions/description
max
units
operating input voltage1
5 Vdc input models
24 Vdc input models
12
40
Vdc
Vdc
start-up voltage
5 Vdc input models
24 Vdc input models
4.5
9
Vdc
Vdc
surge voltage
5 Vdc input models for maximum of 1 second
24 Vdc input models for maximum of 1 second
16
50
Vdc
Vdc
current
5 Vdc input models, full load
24 Vdc input models, full load
857
169
mA
filter
5 Vdc input models - LC filter
24 Vdc input models - C filter
CTRL
module on: CTRL pin open or pulled low (0~0.3 Vdc)
module off: CTRL pin pulled high (2~12 Vdc)
input current when switched off
5
10
mA
typ
max
units
470
220
100
47
1000
1000
470
330
100
μF
μF
μF
μF
μF
μF
μF
μF
μF
±2
%
±0.5
%
Notes:
min
typ
-0.7
-0.7
1. Exceeding maximum input voltage may cause permanent damage.
OUTPUT
parameter
conditions/description
maximum capacitive load
model
D5-S5
D5-S12
D5-S15
D5-S24
D24-S3
D24-S5
D24-S12
D24-S15
D24-S24
min
voltage accuracy
0% ~ 100% load
line regulation
input voltage variation from low to high at full load
load regulation
5% ~ 100% load
switching frequency
PWM mode
330
transient recovery time
25% load step change, nominal input voltage
300
500
μs
transient response deviation
25% load step change, nominal input voltage
3.3 Vdc output
5 Vdc output
other outputs
±5
±5
±3
±10
±8
±5
%
%
%
temperature coefficient
at full load
±0.03
%/°C
±1
trim
±5
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%
kHz
%
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 3 of 8
PROTECTIONS
parameter
conditions/description
min
over voltage protection
over current protection
short circuit protection
typ
110
max
units
160
%
110
160
250
%
min
typ
max
units
output shutdown, auto recovery
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
input to output for 1 minute at 5 mA
input to case for 1 minute at 5 mA
output to case for 1 minute at 5 mA
input to output for 1 minute at 1 mA
input to case for 1 minute at 1 mA
output to case for 1 minute at 1 mA
isolation resistance
input to output
input to case
output to case
isolation capacitance
input to output, 100 kHz / 0.1 V
safety approvals
designed to meet 62368: EN, BS EN
EMI/EMC
CISPR32/EN55032 class B (see Fig.3-2 for recommended circuit)
ESD
IEC/EN61000-4-2 Contact ±6KV perf. criteria B
radiated immunity
IEC/EN61000-4-3 10V/m perf. criteria A
EFT/burst
IEC/EN61000-4-4 ±2KV (see Fig.3-1 for recommended circuit) perf. criteria B
surge
IEC/EN61000-4-5 line to line ±2KV (see Fig.3-1 for recommended circuit) perf. criteria B
conducted immunity
IEC/EN61000-4-6 3 Vr.m.s perf. criteria A
MTBF
as per MIL-HDBK-217F, 25°C
RoHS
yes
500
500
500
1,500
1,500
1,500
Vac
Vac
Vac
Vdc
Vdc
Vdc
100
100
100
MΩ
MΩ
MΩ
1,000
pF
1,000
K hours
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating temperature
see derating curve
-40
85
°C
-55
125
°C
5
95
%
5
G
storage temperature
storage humidity
non-condensing
vibration
10-55Hz
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typ
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 4 of 8
MECHANICAL
parameter
conditions/description
dimensions
DIP without case: 24.00 x 15.10 x 6.19 [0.944 x 0.594 x 0.243 inch]
DIP with case: 25.00 x 16.40 x 6.80 [0.984 x 0.645 x 0.267 inch]
SMT without case: 26.20 x 15.10 x 6.19 [1.031 x 0.594 x 0.243 inch]
SMT with case: 26.20 x 16.40 x 6.80 [1.031 x 0.645 x 0.267 inch]
min
case material
aluminum alloy
weight
DIP without case, SMT without case
DIP with case, SMT with case
MECHANICAL DRAWING (DIP WITHOUT CASE)
units: mm [inch]
tolerance: ±0.50[±0.020]
pin diameter tolerance: ±0.10[±0.004]
PIN Out
PIN
Function
1
Vin
2
Ctrl
3
GND
4
0V
5
Trim
6
+Vo
MECHANICAL DRAWING (DIP WITH CASE)
units: mm [inch]
tolerance: ±0.50[±0.020]
pin diameter tolerance: ±0.10[±0.004]
PIN Out
PIN
Function
1
Vin
2
Ctrl
3
GND
4
0V
5
Trim
6
+Vo
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typ
max
units
mm
mm
mm
mm
2.2
3.5
g
g
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
MECHANICAL DRAWING (SMT WITHOUT CASE)
PIN Out
Function
1
Vin
2
Ctrl
3
GND
4
0V
5
Trim
6
+Vo
MECHANICAL DRAWING (SMT WITH CASE)
units: mm [inch]
tolerance: ±0.50[±0.020]
pin diameter tolerance: ±0.10[±0.004]
PIN Out
PIN
Function
1
Vin
2
Ctrl
3
GND
4
0V
5
Trim
6
+Vo
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date 01/10/2023 │ page 5 of 8
units: mm [inch]
tolerance: ±0.50[±0.020]
pin diameter tolerance: ±0.10[±0.004]
PIN
3D Model
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 6 of 8
DERATING CURVES
APPLICATION CIRCUIT
All the DC-DC converters of this series are tested before delivery using the recommended circuit shown in Fig. 2. Input
and/or output ripple can be further reduced by appropriately increasing the input & output capacitor values Cin and Cout
and/or by selecting capacitors with a low ESR (equivalent series resistance). Also make sure that the capacitance is not
exceeding the max. capacitive load value of the product.
Figure 1
Table 1
Vout
(Vdc)
Cin
(μF)
Cout
(μF)
10
100
3.3
5
12
15
24
EMC RECOMMENDED CIRCUIT
Figure 2
Table 2
Recommended External Circuit Components
Vin (Vdc)
FUSE
C0
5
2200µF/35V
C1
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1000µF/50V
4.7µF/50V
C2
C4
24
choose according to actual input current
4.7µF/50V
100µF/50V
220µF/50V
C3
Refer to the Cout in Fig.2
LCM1
2.2mH
CY1/CY2/CY3
2.2nF/2kV
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 7 of 8
APPLICATION NOTES
Figure 3
Table 3
VOUT
RTOP
RBOTTOM
RO
VREF
(Vdc)
(kΩ)
(kΩ)
(kΩ)
(V)
3.3
4.80
2.87
10
1.25
5
2.87
2.87
10
2.5
12
10.91
2.87
15
2.5
15
14.35
2.87
15
2.5
24
24.77
2.87
17.4
2.5
Note:
Value for RTOP, RBOTTOM, RO, and VREF refer to Table 3 (fixed internal values).
RTRIM: Trim resistance
a: User-defined parameter, no actual meanings
VOUT: Nominal output voltage
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CUI Inc │ SERIES: PYBJ3 │ DESCRIPTION: DC-DC CONVERTER
date 01/10/2023 │ page 8 of 8
REVISION HISTORY
rev.
description
date
1.0
initial release
07/16/2020
1.01
derating curves and circuit figures updated, CTRL pin polarity updated
08/09/2021
1.02
product image & application section updated
11/08/2022
1.03
CE certification removed
12/05/2022
temperature coefficient updated
01/10/2023
1.04
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
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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