Boost/buck DC/DC converter
First Claim
1. A DC/DC converter, comprising:
- a first switch coupled to a first input/output of the converter;
a first input/output energy storage element coupled to the first input/output of the converter;
a second input/output energy storage element coupled to a second input/output of the converter;
an intermediate energy storage element coupled between the second input/output and the first switch;
a second switch coupled to the intermediate energy storage element and to the first switch; and
means for operating the first switch between on and off states while maintaining the second switch in an off state to operate the converter as a buck converter during which time power is transferred from the first input/output to the second input/output and for operating the second switch between on and off states while maintaining the first switch off to operate the converter as a boost converter during which time power is transferred from the second input/output to the first input/output.
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Abstract
A bi-directional DC/DC converter includes a first switch coupled to a first input/output of the converter, a first input/output energy storage element coupled to the first input/output of the converter, a second input/output energy storage element coupled to a second input/output of the converter, an intermediate energy storage element coupled between the second input/output and the first switch and a second switch coupled to the intermediate energy storage element and to the first switch. A pulse width modulator operates the first switch between on and off states while the second switch is maintained in an off state to operate the converter as a buck converter, during which time the power is transferred from the first input/output to the second input/output. A further pulse width modulator operates the second switch between on and off states while the first switch is maintained in the off state to operate the converter as a boost converter, during which time power is transferred from the second input/output to the first input/output.
104 Citations
5 Claims
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1. A DC/DC converter, comprising:
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a first switch coupled to a first input/output of the converter; a first input/output energy storage element coupled to the first input/output of the converter; a second input/output energy storage element coupled to a second input/output of the converter; an intermediate energy storage element coupled between the second input/output and the first switch; a second switch coupled to the intermediate energy storage element and to the first switch; and means for operating the first switch between on and off states while maintaining the second switch in an off state to operate the converter as a buck converter during which time power is transferred from the first input/output to the second input/output and for operating the second switch between on and off states while maintaining the first switch off to operate the converter as a boost converter during which time power is transferred from the second input/output to the first input/output. - View Dependent Claims (2, 3, 4, 5)
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Specification