Resonant switched capacitor converter

Abstract

The invention discloses a resonant switched capacitor converter. The resonant switched capacitor converter provided by the present invention comprises: a first inductor switch series branch, a secondinductor diode series branch, a third inductor diode series branch, a second switch, a second diode, a fourth diode , a first resonant capacitor, a second resonant capacitor, and an energy storage capacitor. The resonant switched capacitor converter provided by the invention realizes a "charge balance" mode in which two sets of resonant currents exist simultaneously, can realize the turn-on of theswitching transistor ZCS and the turn-off of the diode ZCS, has high voltage transmission efficiency and a wide voltage adjustment range, can achieve linear voltage regulation, and enables efficientlinear voltage regulation in a wide range even under light load conditions.

Description

technical field [0001] The invention relates to the field of DC-DC converters, in particular to a resonant switched capacitor converter. Background technique [0002] Traditional switched-capacitor converters have disadvantages such as high instantaneous current peaks when the operating mode changes, switching losses caused by hard switching of the switching tube, and a small linear adjustment range of the load and output voltage. In order to solve the above problems, methods such as controlling the on-resistance, controlling the duty cycle, controlling the frequency, and using a controllable current source are usually used. However, the above methods must sacrifice a large transmission efficiency, especially when the required voltage gain deviates from the circuit theory. value case. Contents of the invention [0003] The purpose of the present invention is to provide a resonant switched capacitor converter, which can not only realize the switching on of the switching tu...

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Problems solved by technology

[0002] Traditional switched capacitor converters have disadvantages such as high instantaneous current peaks when the operating mode changes, switching losses caused by hard switching of the switching tube, and a small linear adjustment range of the load and output voltage.

In order to solve the above problems, methods such as controlling the on-resistance, controlling the duty cycle, controlling the frequency, and using a controllable current source are usually used. However, the above methods must sacrifice a large transmission efficiency, especially when the required voltage gain deviates from the circuit theory. In the case of value

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