Auxiliary turn-on mechanism for reducing conduction loss in body-diode of low side MOSFET of coupled-inductor DC-DC converter
US7443146B2 · kind B2 · utility
12Cited by
1References
16Claims
0Family size
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Key dates
| Filing date | Sep 12, 2006 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Mar 5, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Conduction loss in the body-diode of a low side MOSFET of a power switching stage of one phase of a coupled-inductor, multi-phase DC-DC converter circuit, associated with current flow in the output inductor of that one phase that is induced by current flow in a mutually coupled output inductor of another phase, during normal switching of that other stage, is effectively prevented by applying auxiliary MOSFET turn-on signals, that coincide with the duration of the induced current, to that low side MOSFET, so that the induced current will flow through the turned-on low side MOSFET itself, thereby by-passing its body-diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.