WPAT, P.C., Intellectual Property Attorneys
Bandgap reference circuit, control circuit, and associated method thereof
A bandgap reference circuit includes: a current generating circuit, a start-up circuit, a switch circuit, and a control circuit. The current generating circuit is arranged to generate a reference current according to a control signal on a control node. The start-up circuit is coupled to the current generating circuit and arranged to generate a trigger signal and output the trigger signal as the control signal when the bandgap reference circuit starts up. The switch circuit is coupled to the current generating circuit and arranged to generate a bandgap voltage according to the reference current, and the bandgap voltage is outputted to a regulator coupled to the bandgap reference circuit. The control circuit is coupled to the control node and the switch circuit and arranged to generate a switch control signal according to the trigger signal, and the switch control signal controls a switch status of the switch circuit.
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
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inventional inventional inventional inventional additional
Yung-Chow Chung-Chieh Chih-Chiang Nai Chen
Peng Yang Chang Cheng