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date 08/18/2014
page 1 of 7
SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER
date
page 1 of 7
FEATURES
• up to 30 W isolated output
• industry standard pinout
• 4:1 input range (9~36 Vdc, 18~75 Vdc)
• smaller package
• single/dual/triple regulated outputs
• 1,500 Vdc isolation
• continuous short circuit, over current protection, over voltage protection
• temperature range (-40~85°C)
• six-sided metal shielding
• efficiency up to 90%
MODEL input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efciency
typ
(Vdc)
range
(Vdc) (Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
PYB30-Q24-S5 24 9~36 5 300 6000 30 100 88
PYB30-Q24-S12 24 9~36 12 125 2500 30 100 88
PYB30-Q24-S15 24 9~36 15 100 2000 30 100 90
PYB30-Q24-D5 24 9~36 ±5 ±150 ±3000 30 100 86
PYB30-Q24-D12 24 9~36 ±12 ±63 ±1250 30 100 89
PYB30-Q24-D15 24 9~36 ±15 ±50 ±1000 30 100 90
PYB30-Q24-T312 24 9~36 3.3
±12
175
±31
3500
±625 26.5 100 85
PYB30-Q24-T315 24 9~36 3.3
±15
175
±25
3500
±500 26.5 100 86
PYB30-Q24-T512 24 9~36 5
±12
150
±31
3000
±625 30 100 88
PYB30-Q24-T515 24 9~36 5
±15
150
±25
3000
±500 30 100 88
PYB30-Q48-S5 48 18~75 5 300 6000 30 100 88
PYB30-Q48-S12 48 18~75 12 125 2500 30 100 88
PYB30-Q48-S15 48 18~75 15 100 2000 30 100 89
PYB30-Q48-D5 48 18~75 ±5 ±150 ±3000 30 100 86
PYB30-Q48-D12 48 18~75 ±12 ±63 ±1250 30 100 87
PYB30-Q48-D15 48 18~75 ±15 ±50 ±1000 30 100 87
PYB30-Q48-T312 48 18~75 3.3
±12
175
±31
3500
±625 26.5 100 85
PYB30-Q48-T315 48 18~75 3.3
±15
175
±25
3500
±500 26.5 100 85
PYB30-Q48-T512 48 18~75 5
±12
150
±31
3000
±625 30 100 88
PYB30-Q48-T515 48 18~75 5
±15
150
±25
3000
±500 30 100 87
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.
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 2 of 7
INPUT
parameter conditions/description min typ max units
operating input voltage 24 Vdc input models
48 Vdc input models
9
18
24
48
36
75
Vdc
Vdc
start-up voltage
24 Vdc input models
48 Vdc input models (single/dual output models)
48 Vdc input models (triple output models)
9
18
17.8
Vdc
Vdc
Vdc
under voltage shutdown124 Vdc input models
48 Vdc input models
7.8
16
Vdc
Vdc
surge voltage
for maximum of 1 second
24 Vdc input models
48 Vdc input models
-0.7
-0.7
50
100
Vdc
Vdc
start-up time 10 ms
lter pi lter
CTRL2
models ON (CTRL open or connect high level, 2.5~12 Vdc)
models OFF (CTRL connect GND or low level, 0~1.2 Vdc)
input current (models OFF) 1 mA
Notes: 1. Contact CUI if you are planning to use this feature in your application.
2. CTRL pin voltage is referenced to GND.
OUTPUT
parameter conditions/description min typ max units
line regulation
full load, input voltage from low to high
single and dual output models
triple output models (main output)
triple output models (auxiliary outputs)
±0.2 ±0.5
±1
±5
%
%
%
load regulation3
5% to 100% load, nominal input
single and dual output models
triple output models (main output)
triple output models (auxiliary outputs)
±0.5 ±1
±2
±5
%
%
%
cross regulation
dual output models:
main output 50% load, secondary output from
10% to 100% load
±5 %
voltage accuracy
single and dual output models
triple output models (main output)
triple output models (auxiliary outputs)
±1
±1
±3
±3
±3
±5
%
%
%
adjustability4±10 %
switching frequency PWM mode 400 kHz
transient recovery time 25% load step change 300 500 μs
transient response deviation 25% load step change ±3 ±5 %
temperature coefcient 100% load, single and dual output models
100% load, triple output models
±0.02
±0.03
%/°C
%/°C
Notes: 3. For dual output models, unbalanced load can not exceed ±5%. If ±5% is exceeded, it may not meet all specications.
4. Output trimming available on single and dual output models only.
PART NUMBER KEY
PYB30 - QXX - XXX - X
Input Voltage Output Voltage Heatsink
Base Number
S = single
D = dual
T = triple
"blank" = no heatsink
H = with heatsink
Output
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 3 of 7
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection hiccup, continuous, automatic recovery
over current protection 150 %
over voltage protection
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
15 Vdc output models
3.9
6.2
15
18
Vdc
Vdc
Vdc
Vdc
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
isolation voltage for 1 minute at 1 mA max. 1,500 Vdc
isolation resistance at 500 Vdc 1,000 MΩ
conducted emissions CISPR22/EN55022, class A, class B (external circuit required, see Figure 1-b)
radiated emissions CISPR22/EN55022, class A, 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 1,000,000 hours
RoHS 2011/65/EU
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curve -40 85 °C
storage temperature -55 125 °C
storage humidity non-condensing 5 95 %
case temperature at full load, Ta=71°C 105 °C
SOLDERABILITY
parameter conditions/description min typ max units
hand soldering 1.5 mm from case for 10 seconds 300 °C
wave soldering see wave soldering prole 260 °C
10 Sec. Max.
Wave Soldering Time
4 Sec. Max.
Peak Temp. 260°C Max.
Time (sec.)
Temperature (°C)
250
200
150
100
50
0
Wave Soldering Prole
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 4 of 7
MECHANICAL DRAWING
units: mm[inch]
tolerance: ±0.25[±0.010]
pin diameter tolerance: ±0.10[±0.004]
pin height tolerance: ±0.50[±0.020]
PIN CONNECTIONS
PIN Single
Output
Dual
Output
Triple
Output
1 Vin Vin Vin
2 GND GND GND
3 CTRL CTRL CTRL
4 Trim Trim -Vo2
5 0V -Vo 0V
6+Vo 0V +Vo1
7 NP +Vo +Vo2
Bottom View
Front View
PCB Layout
Top View
Grid Size: 2.54mm x 2.54mm
units: mm[inch]
tolerance: ±0.3[±0.012]
pin diameter tolerance: ±0.10[±0.004]
pin height tolerance: ±0.50[±0.020]
BOARD MOUNT WITH HEATSINK
BOARD MOUNT
Top View
Front View
PCB Layout
Top View
Grid Size: 2.54mm x 2.54mm
PIN CONNECTIONS
PIN Single
Output
Dual
Output
Triple
Output
1 Vin Vin Vin
2 GND GND GND
3 CTRL CTRL CTRL
4 Trim Trim -Vo2
5 0V -Vo 0V
6+Vo 0V +Vo1
7 NP +Vo +Vo2
MECHANICAL
parameter conditions/description min typ max units
dimensions board mount: 50.8 x 40.6 x 11.8
board mount with heatsink: 50.8 x 40.6 x 16.3
mm
mm
case material aluminum alloy
weight board mount
board mount with heatsink
50
70
g
g
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 5 of 7
Recommended external circuit components
Vin (Vdc) 24 48
FUSE Choose according to input current
MOV 10D560K 10D101K
LDM 56μH 56μH
TVS SMCJ48A SMCJ90A
C0 120μF/50V 120μF/100V
C1 4.7μF/50V 2.2μF/100V
LCM 2.2mH 2.2mH
C2 4.7μF/50V 2.2μF/100V
C3*1nF/2kV 1nF/2kV
C4*1nF/2kV 1nF/2kV
EMC RECOMMENDED CIRCUIT
DERATING CURVES
Vin
GND
+Vo
-Vo
EUT
LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
LOAD
0V
Vin
GND
+Vo
0V
EUT
LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
Vin
GND
+Vo2
-Vo2
EUT
LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
LOAD
0V
+Vo1
LOAD
Single Output
Dual Output
Triple Output
Figure 1
Figure 2
Table 1
Table 2
TEST CONFIGURATION
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
Note: Input reected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
External components
Lin 4.7μH
Cin 220μF, ESR < 1.0Ω
at 100 kHz
Temperature Derating Curve
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 020408570
60
Safe operating area
Without heatsink
Wi
th heatsink
Note: *2nF/2kV capacitors for triple output, 48 Vdc input
models.
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 6 of 7
Single
Vout
(Vdc)
Max.
Capacitive
Load
(μF)
Dual
Vout
(Vdc)
Max.
Capacitive
Load1
(μF)
Triple
Vout
(Vdc)
Max.
Capacitive
Load1
(μF)
-- -- -- -- 3.3/±12 4700/300
5 6000 5 2000 3.3/±15 4700/220
12 2500 12 1250 5/±12 4700/300
15 1100 15 680 5/±15 4700/220
1. 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 the capacitance accord-
ingly or choose capacitors with low ESR (see Table 3). However, the capacitance of the output lter capacitor must be appropriate. If
the capacitance is too high, a startup problem might arise. For every channel of the output, to ensure safe and reliable operation, the
maximum capacitance must be less than the maximum capacitive load (see Table 4).
APPLICATION NOTES
Figure 3
Table 3
Figure 4
Table 4
Note: 1. Minimum load shouldn't be less than 5%, otherwise ripple may increase dramatically. Operation under minimum load will not damage the converter, however, they may
not meet all specications listed.
2. Maximum capacitive load is tested at input voltage range and full load.
3. All specications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specied.
DC DC
Vin
GN
D
+Vo
0V
CinCout
Vi n
GND
+V
o
0V
Cin
Cout
DC DC
-Vo
Cout
DC DC
Vin
GND
Vo2
Cout
0V
Cout
Cout
Vo 1
C in
-Vo2
Single Output Dual Output
Triple Output
Single
Vout
(Vdc)
Cin
(µF)
Cout
(µF)
Dual
Vout
(Vdc)
Cin
(µF)
Cout1
(µF)
Triple
Vout
(Vdc)
Cin
(µF)
Cout1
(µF)
-- -- -- -- -- -- 3.3 10 10
5 10 10 ±5 10 10 5 10 10
12 10 4.7 ±12 10 4.7 ±12 10 4.7
15 10 4.7 ±15 10 4.7 ±15 10 4.7
Vout
(Vdc)
R1
(kΩ)
R2
(kΩ)
R3
(kΩ)
Vref
(V)
5 2.883 2.864 10 2.5
12 10.971 2.864 17.8 2.5
15 14.497 2.864 17.8 2.5
+Vo
0V
R
2
R
1
R
3
V
re f
R
T
Trim
0V
R
2
R
1
R
3
V
ref
R
T
Tr
im
+Vo
Tr im up
Tr im down
a
-a
R
2
aR 1
R2
-a
R1-R3
-R3
:a=
Vref
Vref
Vo’ - Vref
Vo’ - Vref
R
1
R=
T
:a= R
2
R=
T
up
dow
n
Note: Value for R1, R2, R3, and Vref refer to Table 5
RT: Trim Resistor
a: User-dened parameter, no actual meanings
Vo': The trim up/down voltage
Application Circuit for Trim pin
(part in broken line is the interior of models) Formula for Trim Resistor
2. Output voltage trimming
Leave open if not used.
Table 5
Note: 1. For each output.
Note: 1. For each output.
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CUI Inc │ SERIES: PYB30 │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 7 of 7
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.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 06/26/2013
1.01 updated spec 08/15/2013
1.02 updated spec 08/18/2014
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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Mouser Electronics
Authorized Distributor
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CUI Inc.:
PYB30-Q48-S15 PYB30-Q48-D15 PYB30-Q48-T315 PYB30-Q24-S5-H PYB30-Q48-D5-H PYB30-Q48-T515-H
PYB30-Q24-D12-H PYB30-Q24-S15-H PYB30-Q24-D15-H PYB30-Q48-S12-H PYB30-Q24-T512-H PYB30-Q24-
T312-H PYB30-Q48-T512-H PYB30-Q24-T515-H PYB30-Q24-S12-H PYB30-Q48-T315-H PYB30-Q24-T315-H
PYB30-Q48-S5-H PYB30-Q48-D15-H PYB30-Q48-D12-H PYB30-Q48-T312-H PYB30-Q24-D5-H PYB30-Q48-S15-H