Additional Resources: Product Page | 3D Model
date 01/24/2019
page 1 of 11
SERIES: PYBE20 DESCRIPTION: DC-DC CONVERTER
FEATURES
up to 20 W isolated output
industry standard pin-out
4:1 input range (9~36 Vdc, 18~75 Vdc)
single/dual regulated outputs
1500 Vdc isolation
continuous short circuit protection
efficiency up to 90%
operating temperature range (-40~+85C)
UL 60950-1 approval on select models
2
input output output output ripple efficiency
MODEL
1
voltage voltage current power & noise
typ range min max max max typ
(Vdc) (Vdc) (Vdc) (mA) (mA) (W) (mVp-p) (%)
PYBE20-Q24-S3 24 9~36 3.3 0 5000 16.5 100 86
PYBE20-Q24-S5 24 9~36 5 0 4000 20 100 88
PYBE20-Q24-S9 24 9~36 9 0 2222 20 100 89
PYBE20-Q24-S12 24 9~36 12 0 1667 20 100 89
PYBE20-Q24-S15 24 9~36 15 0 1333 20 100 90
PYBE20-Q24-S24 24 9~36 24 0 834 20 100 90
PYBE20-Q24-D5 24 9~36 5 0 2000 20 100 86
PYBE20-Q24-D9 24 9~36 9 0 1111 20 100 88
PYBE20-Q24-D12 24 9~36 12 0 834 20 100 88
PYBE20-Q24-D15 24 9~36 15 0 667 20 100 88
PYBE20-Q48-S3 48 18~75 3.3 0 5000 16.5 100 86
PYBE20-Q48-S5 48 18~75 5 0 4000 20 100 86
PYBE20-Q48-S9 48 18~75 9 0 2222 20 100 89
PYBE20-Q48-S12 48 18~75 12 0 1667 20 100 87
PYBE20-Q48-S15 48 18~75 15 0 1333 20 100 90
PYBE20-Q48-S24 48 18~75 24 0 834 20 100 88
PYBE20-Q48-D5 48 18~75 5 0 2000 20 100 86
PYBE20-Q48-D12 48 18~75 12 0 834 20 100 88
PYBE20-Q48-D15 48 18~75 15 0 667 20 100 89
Notes: 1. From 5~100% load, nominal input, 20 MHz bandwidth oscilloscope, with 10 F tantalum and 1 F ceramic capacitors on the output. From 0~5% load, ripple and noise is
<5% Vo.
2. Measured at nominal input voltage, full load. The typical efficiencies for the chassis mount and DIN-rail mount versions are ~2% less than the board mount versions due
to the input reverse polarity protection.
3. All specifications are measured at Ta=25C, humidity < 75%, nominal input voltage, and rated output load unless otherwise specified.
cui.comAdditional Resources: Product Page | 3D Model
CUI Inc SERIES: PYBE20 DESCRIPTION: DC-DC CONVERTER date 01/24/2019 page 2 of 11
PART NUMBER KEY
PYBE20 - QXX - X XX - X
Mounting Style:
Base Number
Output Voltage
blank = board mount
Input Voltage
Output:
T = chassis mount
S = single
DIN = DIN-rail mount
D = dual
INPUT
parameter conditions/description min typ max units
24 Vdc input models 9 24 36 Vdc
operating input voltage
48 Vdc input models 18 48 75 Vdc
24 Vdc input models 9 Vdc
start-up voltage
48 Vdc input models 18 Vdc
for maximum of 1 second
surge voltage 24 Vdc input models -0.7 50 Vdc
48 Vdc input models -0.7 100 Vdc
24 Vdc input models 5.5 6.5 Vdc
under voltage shutdown
48 Vdc input models 12 15.5 Vdc
3.3 Vdc output models 818 mA
24 Vdc input models 5 Vdc output models 993 mA
all other models 969 MA
current
3.3 Vdc output models 409 mA
48 Vdc input models 5 Vdc output models 497 mA
all other models 485 mA
turn on (3.5~12 Vdc or open circuit)
4
remote on/off (CTRL) turn off (<1.2 Vdc)
input current when switched off 4 7 mA
filter Pi filter
input reverse polarity protection only present on chassis mount and DIN-rail mount models
no load power consumption 0.15 W
Notes: 4. The voltage of the CTRL pin is referenced to input GND pin.
OUTPUT
parameter conditions/description min typ max units
3.3, 5 Vdc output models 10,000 F
9 Vdc output models 4,700 F
12 Vdc output models 1,600 F
24 Vdc output models 500 F
5
maximum capacitive load
5 Vdc output models 4,800 F
15, 9 Vdc output models 1,000 F
12 Vdc output models 800 F
15 Vdc output models 625 F
6
voltage accuracy 0% to full load 1 3 %
from low line to high line, full load
line regulation positive outputs 0.2 0.5 %
negative outputs 0.5 1 %
from 5% to full load
7
load regulation positive outputs 0.5 1 %
negative outputs 0.5 1.5 %
Note: 5. Tested at input voltage range and full load.
6. At 0~5% load, the max output voltage accuracy for the 5 & 9 Vdc output models is 5%.
7. At 0~100% load, the max load regulation is 5%.
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