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UCC28730-Q1 Start-up issue © 2017 MARUBUN CORPORATION.

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Presentation on theme: "UCC28730-Q1 Start-up issue © 2017 MARUBUN CORPORATION."— Presentation transcript:

1 UCC28730-Q1 Start-up issue © 2017 MARUBUN CORPORATION

2 Schematics 470 UCC28730 HV © 2016 MARUBUN CORPORATION

3 Phenomenon At the input voltage fluctuation test, sometimes the IC can’t start up. Voltage fluctuation test: the input voltage rises and falls at 10V intervals. UCC28700-Q1 doesn’t happen this phenomenon. *UCC28700-Q1 is same schematics as UCC28730-Q1. VOUT VDD Vblk Pass Failure © 2016 MARUBUN CORPORATION

4 Question - Is there any solutions for this problem?
- Why UCC28700-Q1 doesn’t happen this problem? © 2016 MARUBUN CORPORATION

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