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Power up body bias circuits and methods

  • US 9,710,006 B2
  • Filed: 07/25/2014
  • Issued: 07/18/2017
  • Est. Priority Date: 07/25/2014
  • Status: Active Grant
First Claim
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1. An integrated circuit (IC) device, comprising:

  • at least a first body bias circuit that receives a first power supply voltage, the first body bias circuit configured to generate a first body bias voltage different from the first power supply voltages of the IC device;

    at least a clamp control circuit that receives the first power supply voltage and generates a clamp signal when the clamp control circuit detects a saturation of the first power supply voltage;

    at least a first bias control circuit that receives the first power supply voltage, the first body bias voltage and the clamp signal, the first bias control circuit configured to set a first body bias node to the first power supply voltage while the first power supply voltage is developing and until the first power supply voltage has completed developing, and to subsequently enable the first body bias node to be set to the first body bias voltage according to the clamp signal after the first power supply voltage reaches stable level and is saturated; and

    a plurality of first transistors having bodies connected to the first body bias node.

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