Electrical-overstress protection circuit for an integrated circuit
AssigneeHimax Technologies Limited
InventorsChung-Ming Huang, Tieh-Yen Chang, Hung-Sui Lin
Life of this patent
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Abstract
An electrical-overstress (EOS) protection circuit for an electronic device includes series-connected resistors, a mode-control switch, and a bias circuit. The series-connected resistors are electrically coupled between an input and an output, and the mode-control switch is electrically coupled between the output and a ground. The bias circuit is electrically coupled to the input for generating a mode-control signal to control the mode-control switch. The bias circuit generates the mode-control signal in a way such that the mode-control switch is open in a normal mode and closed in an EOS mode.
Claims7
An electrical-overstress (EOS) protection circuit for an electronic device, comprising:
- series-connected voltage-controlled resistors electrically coupled between an input an and output;
- a mode-control switch electrically coupled between the output and a ground;
- and
- a bias circuit electrically coupled to the input with a configuration for generation of a mode-control signal to control the mode-control switch, and generating at least one control signal for controlling at least one of the voltage-controlled resistors;
- wherein, the mode-control signal and the control signal are present with the mode-control switch being open in a normal mode and closed in an (EOS) mode, and the resistance of the voltage-controlled resistors is higher in the (EOS) mode than in the normal mode.
Dependencies are inferred from the claim text.