Control circuit and method for maintaining high efficiency in a

Details Control circuit and method for maintaining high efficiency in a Control circuit and method for maintaining high efficiency in a

2000-03-27

2000-12-26

Riley, Shawn

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323282, 323224, 323283, G05F 110

Patent

active

061665274

ABSTRACT:
A high efficiency control circuit for operating a buck-boost switching regulator is provided. The switching regulator can regulate an output voltage higher, lower, or the same as the input voltage. The switching regulator may be synchronous or non-synchronous. The control circuit can operate the switching regulator in buck mode, boost mode, or buck-boost mode. In buck mode, the switching regulator regulates an output voltage that is less than the input voltage. In boost mode, the switching regulator regulates an output voltage that is greater than the input voltage. In buck and boost modes, less than all of the switches are switched ON and OFF to regulate the output voltage to conserve power. In buck-boost mode, all of the switches switch ON and OFF to regulate the output voltage to a value that is greater than, less than, or equal to the input voltage.

REFERENCES:
patent: 5565761 (1996-10-01), Hwang
patent: 6037755 (2000-03-01), Mao et al.

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