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VOLTAGE CONVERTER WITH COMBINED CAPACITIVE VOLTAGE DIVIDER, BUCK CONVERTER AND BATTERY CHARGER
VOLTAGE CONVERTER WITH COMBINED CAPACITIVE VOLTAGE DIVIDER, BUCK CONVERTER AND BATTERY CHARGER
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机译:组合电容式电压分压器,降压转换器和电池充电器的电压转换器
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摘要
A voltage converter including a capacitive voltage divider combined with a buck converter and battery charger. The converter includes four capacitors, a switch circuit, an inductor and a controller. The capacitors form a capacitor loop between an input node and a reference node and include a fly capacitor controlled by the switch circuit, which is controlled by a PWM signal to half the input voltage to provide a first output voltage on a first output node, and to convert the first output voltage to the second output voltage via the inductor. The controller controls the PWM signal to regulate the second output voltage, and provides a voltage control signal to control the input voltage to maintain the first output node between a predetermined minimum and maximum battery voltage levels. A battery charge path is coupled to the reference node and battery charge mode depends upon the battery voltage.
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