SQ60120QPA28 データシートの表示（PDF） - SynQor Worldwide Headquarters
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SQ60120QPA28 Datasheet PDF : 12 Pages
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Technical Specification
Output
Current
40A
28A
Output
Voltage
12V
0V
1 ms
Time
Figure C: Output Overload protection diagram (not to scale)
repeated cycles of shutdown and restart with a duty cycle of 20
ms (On) and 200 ms (Off) respectively. The BusQor module
returns (auto resetting) to normal operation once the overload
is removed. The BusQor is designed to survive in this mode
indefinitely without damage and without human intervention.
Output Short Circuit Protection: When the output
of the BusQor module is shorted, a peak current of typically 40 A
will flow into the short circuit for a time of about 1 ms. The output of
the BusQor will shutdown to zero volts after the 1 ms have elapsed
(Figure D). The shutdown period lasts for a time of 200 ms, at the
end of which the BusQor module tries to power up again. If the
short circuit persists, the output voltage will go through repeated
cycles of shutdown and restart with a duty cycle of 20 ms (On)
and 200 ms (Off) respectively. The BusQor module returns (auto
resetting) to normal operation once the short circuit is removed.
The BusQor is designed to survive in this mode indefinitely without
damage and without human intervention.
Input: 36-75 V
Output: 12 V
Current: 28 A
Package: Quarter-brick
In the Auto resetting mode, also referred to as “Hiccup” mode, the
power drawn from the 48 V input is about 5 Watts, most of which is
dissipated into the external fault. It is important that copper traces
and pads from the output circuit be designed to withstand the short
term peaks, although the average current into the fault may be as
low as 50 mA typical. See Figure 17 for appropriate waveform.
Output
Current
40A peak
Output
Voltage
<12V
0V
220 ms
Time
20 ms
Figure D: Output Short Circuit and Auto-Resetting protection
diagram (not to scale)
Product # SQ60120QPA28
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2SQ612J Rev. B
06/17/09
Page 10
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