Boost/buck DC/DC converter

Details Boost/buck DC/DC converter Boost/buck DC/DC converter

1987-12-28

1989-01-31

Wong, Peter S.

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

323222, 363 16, G05F 1445, H02M 3335

Patent

active

048018597

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.

REFERENCES:
patent: 4161023 (1979-07-01), Goffeau
patent: 4245286 (1981-01-01), Paulkovich et al.
patent: 4695776 (1987-09-01), Dishner et al.
patent: 4736151 (1988-04-01), Dishner

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