Slope compensation circuit, voltage conversion circuit, and electronic device

The invention provides a slope compensation circuit, a voltage conversion circuit and an electronic device, the slope compensation circuit comprises an inductive current sampling circuit and a slope voltage generation circuit, the inductive current sampling circuit is configured to sample current pa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO NIAN, ZHAO XINJIANG, LYU CHANGMING
Format:	Patent
Sprache:	chi ; 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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Beschreibung
Zusammenfassung:	The invention provides a slope compensation circuit, a voltage conversion circuit and an electronic device, the slope compensation circuit comprises an inductive current sampling circuit and a slope voltage generation circuit, the inductive current sampling circuit is configured to sample current passing through an inductor during the charging period of the inductor in the voltage conversion circuit, and the slope voltage generation circuit is configured to generate slope voltage; a sampling voltage is output; the ramp voltage generation circuit is configured to generate a ramp compensation voltage based on the first sampling voltage, and the ratio of the first slope of the ramp compensation voltage to the second slope of the sampling voltage is a constant. Therefore, the circuit can be flexibly applied to direct-current voltage conversion circuits with different inductances, and the voltage conversion circuit can be ensured to run stably all the time regardless of the slope of the slope compensation voltage.