Power supply clamping circuit for prolonging electrostatic discharge time
A time-delay circuit and electrostatic discharge technology, applied in the circuit field, can solve the problems of short electrostatic discharge time, unrecoverable discharge tube, poor electrostatic protection ability of chips, etc., to improve protection ability, ESD protection ability and reliability Sexuality, the effect of prolonging the release time
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[0019] Such as image 3 As shown, the power clamp circuit for extending the electrostatic discharge time of the present invention includes a first RC delay circuit module, a second RC delay circuit module, an inverter circuit module, a discharge field effect transistor, and a first-stage RC delay circuit. The circuit module and the second RC delay circuit module are respectively connected to the source of the bleeder field effect tube, and the first RC delay circuit module and the second RC delay circuit module are respectively connected to the drain of the bleeder field effect tube. The second RC delay circuit module is connected to the gate of the bleeder field effect transistor, the first RC delay circuit module is connected to the second RC delay circuit module through the inverter circuit module, and the first RC delay circuit module The delay circuit module is used to turn on the bleeder field effect transistor for electrostatic discharge. When the discharge time reaches t...
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