Patent ID: 8928366
Filing Date: 2015-01-06
Classification: H03K

Abstract:
1. A circuit for reducing crowbar current, comprising: an inverter having an input and an output; a first switch coupled between the inverter and a first power supply rail; a second switch coupled between the inverter and a second power supply rail; a feedback circuit coupled to the output of the inverter, wherein the feedback circuit is configured to turn off the first switch when the output of the inverter is in a low output state, and to turn off the second switch when the output of the inverter is in a high output state; and a diode-connected PMOS transistor coupled between the first power supply rail and the inverter, wherein the diode-connected PMOS transistor is configured to provide a current path between the first power supply rail and the inverter when the input of the inverter transitions from a high input state to a low input state.