Input current sensing AVP method for future VRM
Virginia Tech Intellectual Properties, Inc.
Lee, Fred C.
Xu, Ming Gang
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A voltage converter provides a desired voltage droop with load while avoiding output current sensing and active control/feedback circuits and avoiding excessive power dissipation from passive components by placing a sensing resistor in the low current, switched input circuit of the voltage converter. Therefore, the resistor conducts only when a switch controlling voltage conversion is conductive, generally at very low duty cycle and low current.
- Virginia Tech Patents