Electric power conversion systems – Current conversion – With voltage multiplication means
Patent
1996-04-12
1999-06-22
Wong, Peter S.
Electric power conversion systems
Current conversion
With voltage multiplication means
H02M 725
Patent
active
059148675
ABSTRACT:
A generator-booster includes a bootstrap capacitor coupled between an output node and a pull-up node. A bootstrap control stage is coupled to the pull-up node and receives a pump signal with two states determining a precharge step and a pull-up step of the bootstrap capacitor. A precharge limiting transistor is supplied with a precharge reference signal and is coupled to the output node and the bootstrap capacitor to prevent a bootstrap capacitor from being charged in excess of a value determined by the precharge reference signal. A limiting stage is coupled to the output node and the bootstrap capacitor to prevent a voltage of the output node from exceeding a value determined by the limiting stage. The bootstrap control stage also provides for decoupling the pull-up node from the pump signal during the pull-up step, after the limiting stage has been turned on.
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Jardieu Derek J.
SGS--Thomson Microelectronics S.r.l.
Wong Peter S.
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