Converter output stage with mosfets having different characteristics
AssigneeEmpower Semiconductor, Inc.
InventorTimothy Alan Phillips
Life of this patent
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Abstract
A buck voltage converter is disclosed. The buck voltage generator includes a controller configured to generate one or more pulse width modulation (PWM) signals, and a plurality of serially connected switches configured to receive the PWM signals and to generate an output voltage signal at an output terminal based on the received PWM signals. The output voltage signal has an average voltage corresponding with a duty cycle of the PWM signals, a first switch of the plurality of serially connected switches has a first breakdown voltage and a second switch of the plurality of serially connected switches has a second breakdown voltage, and the first breakdown voltage is less than the second breakdown voltage.
Claims21
A switching converter, comprising:
- a controller configured to generate one or more control signals;
- and
- a plurality of serially connected switches configured to receive the one or more control signals and to generate an output voltage signal at an output terminal based on the received one or more control signals, wherein the output voltage signal is controlled based on the control signals to be substantially equal to a first voltage or to be substantially equal to a second voltage,
- wherein a first switch of the plurality of serially connected switches is a first type of switch,
- wherein a second switch of the plurality of serially connected switches is a second type of switch,
- wherein the first type of switch is characterized as having a first gate oxide thickness,
- wherein the second type of switch is characterized as having a second gate oxide thickness, and
- wherein the first gate oxide thickness is less than the second gate oxide thickness.
A switching converter, comprising:
- a plurality of serially connected switches configured to receive one or more control signals and to generate an output voltage signal at an output terminal based on the received one or more control signals, wherein the output voltage signal is controlled based on the control signals to be substantially equal to a first voltage or to be substantially equal to a second voltage,
- wherein a first switch of the plurality of serially connected switches is a first type of switch,
- wherein a second switch of the plurality of serially connected switches is a second type of switch,
- wherein the first type of switch is characterized as having a first gate oxide thickness,
- wherein the second type of switch is characterized as having a second gate oxide thickness, and
- wherein the first gate oxide thickness is less than the second gate oxide thickness.
Dependencies are inferred from the claim text.