Slater & Matsil, L.L.P.
Start-up circuits for starting up bandgap reference circuits
An integrated circuit structure includes a bandgap reference circuit and a start-up circuit. The bandgap reference circuit includes a positive power supply node and a PMOS transistor including a source coupled to the positive power supply node. The start-up circuit is configured to be turned on during a start-up stage of the bandgap reference circuit, and to be turned off after the start-up stage. The start-up circuit includes a switch configured to interconnect a gate and a drain of the PMOS transistor during the start-up stage, and to disconnect the gate of the PMOS transistor from the drain of the PMOS transistor after the start-up stage.
Taiwan Semiconductor Manufacturing Company, Ltd.
G
G05F
inventional
Chia-Fu Gu-Huan
Lee Li