Electric power conversion systems – Current conversion – With voltage multiplication means
Patent
1997-03-31
1998-07-14
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
With voltage multiplication means
H02M 700
Patent
active
057814260
ABSTRACT:
A typical booster circuit of the present invention comprises a first capacitor having first and second electrodes, a second capacitor having first and second electrodes, a switching circuit for transferring boosted potential appearing on each first electrode of the first and second capacitors to a boosting potential output node, a precharge circuit for precharging each first electrode of the first and second capacitors, a logic circuit for setting a potential level of the second electrode of the first capacitor to a first potential level and setting a potential level of the second electrode of the second capacitor to a second potential level which is higher than the first potential level, respectively upon reception of a control signal having a first state, and for setting the potential level of the second electrode of the first capacitor to the second potential level, and setting the potential level of the second electrode of the second capacitor to the first potential level, respectively upon reception of a control signal having a second state, a detector circuit for outputting a detecting signal having a first state when a potential level of the boosting potential output node is lower than a given value, and outputting a detecting signal having a second state when the potential level of the boosting potential output node is higher than the given level, and a control signal generator circuit for alternately outputting the control signals having the first and second states in response to an oscillation signal upon reception of the detecting signal having the first state, and for outputting either of the control signal having the first state or the control signal having the second state irrespective of the oscillation signal upon reception of the detecting signal having the second state.
REFERENCES:
patent: 4110639 (1978-08-01), Redwine
patent: 5055840 (1991-10-01), Barlett
patent: 5357468 (1994-10-01), Satani et al.
patent: 5661419 (1997-08-01), Bhagwan
Nguyen Matthew V.
Oki Electric Industry Company, Ltd.
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