Birch, Stewart, Kolasch & Birch, LLP
Power-on control circuit with state-recovery mechanism and operating circuit utilizing the same
A power-on control circuit is provided. A first detection circuit detects the voltage of a first voltage source to generate a first detection signal to a first node. A switching circuit is coupled to the first voltage source and a second voltage source and outputs the voltage of the first voltage source or the voltage of the second voltage source to a second node according to the voltage level of the first node. A first buffer generates a feedback signal and a control signal according to the voltage level of the second node. A second detection circuit generates a second detection signal according to the feedback signal, the control signal, the voltage of the second voltage source and a recovery signal. A second buffer generates the recovery signal according to the second detection signal.
VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
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H03K H03K H03K
inventional inventional inventional
Chieh-Yao Shao-Chang Hung-Wei Jung-Tsun
Chuang Huang Chen Chuang