BIDIRECTIONAL SWITCHED CAPACITOR CONVERTER WITH CURRENT LIMITING AND CONTROL CIRCUIT AND CONTROL METHOD THEREOF
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
May 13, 2024
filing date -
May 13, 2024
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Abstract
A switched capacitor converter for converting a first voltage into a second voltage and vice versa, includes: a plurality of switches which includes at least four switches, with a first switch included, which is coupled between the first voltage and an inductor switching node; an inductor coupled between the inductor switching node and the second voltage; a flying capacitor coupled to the plurality of switches and configured as a capacitive voltage divider; a current sense circuit for detecting an inductor current and sampling the inductor current during the first switch's turn-on state to generate a sensed current signal; an error amplifier for comparing the sensed current signal with a reference current signal to generate a first amplified signal; and a PWM generator for comparing the first amplified signal with a ramp signal for generating switching control signals to control a first switch current flowing to or from the first voltage.
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