Switch mode converter and improved deadband control therefor

Details Switch mode converter and improved deadband control therefor Switch mode converter and improved deadband control therefor

1985-01-22

1986-08-12

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, H02M 3335

Patent

active

046059970

ABSTRACT:
A method and circuitry are disclosed for ensuring that cross-conduction of a pair of primary switches coupled across a DC input voltage in a switch mode converter does not occur based on the actual state of the primary switches. The DC input is coupled to the output of the primary switches through a respective primary switch during first and second time periods in respective half cycles of the converter. Each first and second time period is separated by a deadband during which signals are provided to turn each primary switch off. The state of the primary switches is monitored during the deadband, and the deadband is maintained before progressing into the next first or second time period until both primary switches of the pair are off. Converters utilizing the method and circuitry for accomplishing the foregoing are also disclosed.

REFERENCES:
patent: 3435324 (1969-03-01), Bishop
patent: 4034282 (1977-07-01), Renard
patent: 4061930 (1977-12-01), Nerem
patent: 4095128 (1978-06-01), Tanigaki
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4212029 (1982-01-01), Zellmer
patent: 4218647 (1978-10-01), Hass
patent: 4302807 (1981-11-01), Mentler
patent: 4325111 (1982-04-01), Quioque
patent: 4456949 (1984-06-01), Incledon
Boertzel et al., "Overlap Prevention for Switching Regulators", IBM Technical Disclosure Bulletin, vol. 24, No. 7B, Dec. 1981.

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