Richtek Technology Corporation

Hung-Sung Chu

Wei-Lun Hsieh

Wei-Hsin Wei

Der-Jiunn Wang

Kuo-Chen Tsai

Chung-Hsien Tso

The present invention discloses a multipurpose half bridge signal output circuit. The multipurpose half bridge signal output circuit is capable of selectively operating under a charge sharing mode or a gate pulsing modulation mode. The multipurpose half bridge signal output circuit includes: a first output pin; a second output pin; a first circuit zone having a first common end coupled to the first output pin; and a second circuit zone having a second common end coupled to the second output pin.

Multipurpose half bridge signal output circuit

For a charge pump, a control circuit switches two or more input voltages to apply to one or more pumping capacitors under auto-sensing control to modulate a maximum pumping voltage as close as to a demanded output voltage to thereby reduce the difference between the maximum pumping voltage and the output voltage for efficiency and thermal improvement of the charge pump. The maximum pumping voltage is produced by mixing the different input voltages and the charge pump may provide more operation modes.

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Zhubei, Taiwan

Hung-Sung Chu