PYB20 Datasheet, PDF (2/7 Pages) CUI INC – DC-DC CONVERTER

CUI Inc │ SERIES: PYB20 │ DESCRIPTION: DC-DC CONVERTER
date 08/15/2013 │ page 2 of 7
INPUT
parameter
conditions/description
min
operating input voltage
24 V input models
48 V input models
9
18
start-up voltage
24 V input models
48 V input models
under voltage shutdown
24 V input models
48 V input models
7.5
16
surge voltage
for maximum of 1 second
24 V input models
48 V input models
-0.7
-0.7
start-up time
nominal input, constant load
filter
pi filter
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)
input current (models OFF)
Note:
1. CTRL pin voltage is referenced to GND.
OUTPUT
parameter
conditions/description
min
line regulation
full load, input voltage from low to high
load regulation
10% to 100% load
cross regulation
dual output models:
main output 50% load, secondary output from
10% to 100% load
voltage accuracy
voltage balance²
dual output, balanced loads
adjustability³
switching frequency
PWM mode, PYB20-Q24-S24
PWM mode, all other models
315
transient recovery time
25% load step change
transient response deviation
25% load step change
temperature coefficient
100% load
Note:
2. For dual output models, unbalanced load can not exceed ±5%. If ±5% is exceeded it may not meet all specifications.
3. Output trimming available on single output models only.
PROTECTIONS
parameter
short circuit protection
over current protection
over voltage protection
conditions/description
hiccup, continuous, automatic recovery
3.3 Vdc output models
5 Vdc output models
12 Vdc output models
15 Vdc output models
24 Vdc output models
min
typ
24
48
10
1
typ
±0.2
±0.5
±1
±0.5
±10
300
300
±3
typ
160
3.9
6.2
15
18
30
max
36
75
9
17.8
50
100
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
ms
mA
max
±0.5
±1
±5
±3
±1
345
500
±5
±0.02
units
%
%
%
%
%
%
KHz
KHz
μs
%
%/°C
max
units
%
Vdc
Vdc
Vdc
Vdc
Vdc
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