Isolated synchronous rectification control circuit, control device, and control method

The present invention provides an isolated synchronous rectification control circuit, a control device, and a control method. The control circuit includes a power supply module, a reference module, a comparator module, a primary side turn-on determination unit, a secondary intermittent burst estimat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Guan Lei, Wu Shouhua, Zong Qiang, Yin Zhong
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 BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PULSE TECHNIQUE
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Beschreibung
Zusammenfassung:	The present invention provides an isolated synchronous rectification control circuit, a control device, and a control method. The control circuit includes a power supply module, a reference module, a comparator module, a primary side turn-on determination unit, a secondary intermittent burst estimation unit, a logic unit, and a driver unit. The control device includes a transformer, a bypass capacitor configured to provide a stable voltage, a time constant setting resistor configured to configure a primary side turn-on time constant and a secondary intermittent burst time estimation determination, a synchronous rectification control circuit configured to determine the primary side turn-on based on the current flowing into a time setting terminal, predict a secondary side intermittent burst time, and generate logic control signals to drive the turn-on or turn-off of the synchronous rectifier, and an output capacitor connected to the rectification control circuit to provide an output capacitance.