SWITCHING POWER CONVERSION APPARATUS AND MULTI-LEVEL SWITCHING POWER CONVERTER CIRCUIT THEREIN
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United States of America Patent
Stats
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N/A
Issued Date -
Sep 5, 2019
app pub date -
Dec 14, 2018
filing date -
Mar 2, 2018
priority date (Note) -
Granted
status (Latency Note)
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Abstract
A switching power conversion apparatus includes: a multi-level power stage, a PWM control circuit, a multi-level driver circuit, a bootstrap capacitor control circuit and a driving power control circuit. The bootstrap capacitor control circuit includes bootstrap capacitor control switches. During a charging period, a bootstrap control signal controls the bootstrap capacitor control switches, to electrically connect a second bootstrap node to the ground voltage level, whereby the supply voltage charges the bootstrap capacitor via the bootstrap diode. During a pumping period, the bootstrap control signal controls the bootstrap capacitor control switches to electrically connect the second bootstrap node to one of the upper-gate nodes or the switching node, whereby the voltage of the first bootstrap node is pumped to a corresponding pumping voltage level.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | B | CN110224576 | Oct 22, 2018 |
International Classification(s)
- 2018 Application Filing Year
- H03K Class
- 2872 Applications Filed
- 2161 Patents Issued To-Date
- 75.25 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- H03K Class
- 27.32 % this patent is cited more than
- 6 Age