Adaptive pulse width modulated resonant Class-D converter

Adaptive pulse width modulated resonant Class-D converter

Switching losses at high line in variable-input Class-D resonant DC-to-DC power converters regulated by changing the duty cycle of the switching transistors are avoided by making the turn-off time of the discharging switch dependent upon the current in the resonant transformer primary circuit, there...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YU, CHAU HON, STEWART, NEAL GEORGE, CHENG, WING LING
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Zusammenfassung:Switching losses at high line in variable-input Class-D resonant DC-to-DC power converters regulated by changing the duty cycle of the switching transistors are avoided by making the turn-off time of the discharging switch dependent upon the current in the resonant transformer primary circuit, thereby preserving bidirectional zero-voltage switching. Losses due to asymmetrical high current pulses in one arm of the rectified output can be mitigated by use of MOSFETs as synchronous rectifiers to take the place of rectifying diodes.