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CURRENT SENSE ACCURACY IMPROVEMENT FOR MOSFET RDS (ON) SENSE BASED VOLTAGE REGULATOR BY ADAPTIVE TEMPERATURE COMPENSATION

  • US 20170115725A1
  • Filed: 10/27/2015
  • Published: 04/27/2017
  • Est. Priority Date: 10/27/2015
  • Status: Active Grant
First Claim
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1. An Information Handling System (IHS) having temperature-compensated power control, the IHS comprising:

  • a computing component;

    a voltage regulation (VR) module comprising;

    an integrated circuit die;

    a power stage component contained in the integrated circuit die and comprising a high side driver and a low side driver both electrically connected to power the computing component with voltage-regulated power;

    a current sensor contained in the integrated circuit die to measure a monitored current (Imon) value of the voltage-regulated power; and

    a temperature sensor contained in the integrated circuit die to measure a temperature value at one location of the integrated circuit die, wherein a temperature value sensed at the location has a nonlinear temperature coefficient relationship with a second temperature of the high side driver; and

    a VR controller in communication with the current sensor and the temperature sensor and which executes instructions that configure the VR controller to;

    receive the Imon value from the current sensor;

    receive the temperature value from the temperature sensor;

    determine a temperature-compensated Imon value based at least in part on the Imon value, the temperature value, and an empirically-derived temperature coefficient defined at the Imon value and the temperature value; and

    control the voltage-regulated power at least in part based on the temperature-compensated Imon value.

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