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The conventional forward converter

The conventional forward converter

The conventional forward converter. Max v ds = 2 V g + ringing Limited to D < 0.5 On-state transistor current is P / DV g Magnetizing current must operate in DCM Peak transistor voltage occurs during transformer reset

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2.4k views • 36 slides
Zero-voltage transition converters The phase-shifted full bridge converter

Zero-voltage transition converters The phase-shifted full bridge converter

Zero-voltage transition converters The phase-shifted full bridge converter. Buck-derived full-bridge converter Zero-voltage switching of each half-bridge section Each half-bridge produces a square wave voltage. Phase-shifted control of converter output.

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2.22k views • 30 slides
Active clamp circuits

Active clamp circuits

Active clamp circuits. Can be viewed as a lossless voltage-clamp snubber that employs a current-bidirectional switch See Vinciarelli patent (1982) for use in forward converter Related to other half-bridge ZVS circuits Can be added to the transistor in any PWM converter

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593 views • 19 slides
Active clamp circuits

Active clamp circuits

Active clamp circuits. Can be viewed as a lossless voltage-clamp snubber that employs a current-bidirectional switch See Vinciarelli patent (1982) for use in forward converter Related to other half-bridge ZVS circuits Can be added to the transistor in any PWM converter

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637 views • 19 slides
Soft-switching converters with constant switching frequency

Soft-switching converters with constant switching frequency

Soft-switching converters with constant switching frequency. With two or more active switches, we can obtain zero-voltage switching in converters operating at constant switching frequency Often, the converter characteristics are nearly the same as their hard-switched PWM parent converters

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337 views • 14 slides

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