BATTERY CHARGER INTEGRATED CIRCUIT FOR ADAPTIVELY LIMITING OVER- CURRENT, MOBILE DEVICE COMPRISING THE SAME AND OPERATION METHOD THEREOF

A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit (1100) configured to generate a reset voltage (VRST) by comparing a ramp voltage reflecting the...

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Bibliographische Detailangaben
Hauptverfasser:	YOON, Kyeseok, CHO, Daewoong, HEO, Jungwook, YOO, Jeongdu, LEE, Sungwoo, KIM, Seunghoon
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit (1100) configured to generate a reset voltage (VRST) by comparing a ramp voltage reflecting the level of the inductor current (IIND) with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller (1300) configured to generate an OCL control current (IOCL) by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage (VRST); an oscillator (1400) configured to generate an oscillation voltage (Vosc) wherein a frequency of the oscillation voltage (Vosc) varies based on a magnitude of the OCL control current (IOCL); and a switching transistor (1800) for switching the inductor current based on the oscillation voltage.