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IXRD1002 Datasheet(PDF) 6 Page - Zilog, Inc.

Part No. IXRD1002
Description  High Power Digital Inrush Current Controller
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Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
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IXRD1002 Datasheet(HTML) 6 Page - Zilog, Inc.

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High Power Digital Inrush Current Controller
Reference Design
© 2015 IXYS
6
IXRD100102-1015
trigger overload protection. Continuous overload results in multiple attempts to restart the device with
immediate interruption after load current meets the 12A threshold.
Figure 5. Digital Inrush Controller Setup
The auxiliary power supply should be turned ON after the AC power is ON. After a power-on reset and
initialization, the MCU analyzes the power line, sets an appropriate timing, and begins pre-charging the
bulk capacitor. Actual waveforms taken from a scope at the normal operation are depicted in Figure 6.
Figure 6. Scope Snapshot of the Digital Inrush Current Control
Legend (Not to scale):
Blue – Power line current (10A/div)
Red – Load voltage (50V/div)
Yellow – U2 control signal
Green – Power Good status signal (1V/div)


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