Double-ended converter
AssigneeLien Chang Electronic Enterprise Co., Ltd.
InventorsChun-Kong Chan, Jeng-Shong Wang
Life of this patent
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Abstract
A full bridge inverter includes a push/pull control chip outputting a first control signal and a second control signal. Each duty cycle of the two control signals is smaller than 50%. Moreover, both a first driver and a second driver are coupled to the push/pull control chip and a DC power. A full bridge switch assembly with four N-MOSes couples to the DC power, the first driver, the second driver and a transformer, and converts the DC power into an AC power by the first driver and the second driver. The AC power is transmitted to a first side of the transformer.
Claims22
A full bridge inverter connected to a first side of a transformer and converting a DC power to an AC power, said full bridge inverter comprising:
- a push/pull control chip having a first output terminal and a second output terminal, said first and second output terminals separately outputting a first control signal and a second control signal both with a duty cycle smaller than 50%;
- a first switch coupling to said first output terminal of said push/pull control chip;
- a first SCR switch having a gate coupling to said first switch and an anode coupling to said DC power;
- a first N-MOS having a gate coupling to a cathode of said first SCR switch and a drain coupling to said DC power and a source coupling to one terminal of said first side of said transformer;
- a second N-MOS having a gate coupling to said first output terminal of said push/pull control chip via a first buffer circuit and a drain coupling to said source of said first N-MOS and a source coupling to a reference terminal;
- a second switch coupling to said second output terminal of said push/pull control chip;
- a second SCR switch having a gate coupling to said second switch and an anode coupling to said DC power;
- a third N-MOS having a gate coupling to a cathode of said second SCR switch and a drain coupling to said DC power and a source coupling to another terminal of said first side of said transformer;
- and
- a fourth N-MOS having a gate coupling to said second output terminal of said push/pull control chip via a second buffer circuit and a drain coupling to said source of said third N-MOS and a source coupling to said reference terminal.
A full bridge inverter connected to a first side of a transformer and converting a DC power to an AC power, said full bridge inverter comprising:
- a push/pull control chip having a first output terminal and a second output terminal, said first and second output terminals separately outputting a first control signal and a second control signal both with a duty cycle smaller than 50%;
- a first driver coupling to said first output terminal of said push/pull control chip and said DC power, and receiving said first control signal;
- a second driver coupling to said second output terminal of said push/pull control chip, and receiving said second control signal;
- and
- a full bridge switch assembly composed of four N-MOSes, said full bridge switch assembly coupling to said DC power, said first driver, said second driver and said transformer, and converting said DC power into an AC power by said first driver and said second driver, and said AC power being transmitted to two terminals of a first side of said transformer.
Dependencies are inferred from the claim text.