Voltage regulator bypass circuit

Details Voltage regulator bypass circuit Voltage regulator bypass circuit

1995-10-30

1997-04-29

Krishnan, Aditya

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

361 91, H02H 900, H02H 324

Patent

active

056252803

ABSTRACT:
An on-chip voltage regulator circuit isolates the chip circuitry from spurious signals and electrostatic discharge (ESD) of peripheral circuitry. A bypass function for the regulator circuit is initiated on detection of the onset of an over voltage condition. In one implementation, a MOSFET is used to (1) initiate a parallel current path from Vcc to Vdd and (2) bypass the regulator to establish a continuous current path from the ESD diode to the Vcc to the Vdd power grid. The circuit addresses level shifting and uses an RC triggering technique.

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