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Multiple Input, Single Output, Single Inductor DC-DC Converter Architecture Providing Charge Reuse by an Efficient High Voltage Current Sink
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| Author(s) |
Leo ROLFF |
| Abstract |
Integrated gate-drivers for power MOSFETs require multiple supply voltages biasing internal circuitryor providing a high voltage ground to the high-side driver. This paper proposes a novel DC-DC converterarchitecture fulfilling these demands of modern gate-driver ASICs while increasing system efficiency. Inthe proposed concept a conventional single inductor DC-DC converter generating a low voltage supplyto auxiliary circuits from a high voltage input is extended by using the high-voltage ground of the gate-driver as an additional input to the converter. This input voltage is controlled to remain nearly constantby adapting its load current with an attached current sink. The charge drained from the high-voltageground by this current sink is reused to boost system efficiency of the converter. The developed conceptis also applicable to converters operating in higher power regimes. |
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| Filename: | 0348-epe2016-full-20031651.pdf |
| Filesize: | 223.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2017-04-13 by System |
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