Method and apparatus for digital control of a switching regulator

Method and apparatus for digital control of a switching regulator

  • CN 1,937,384 A
  • Filed: 08/25/2006
  • Published: 03/28/2007
  • Est. Priority Date: 08/26/2005
  • Status: Active Application
First Claim
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1. circuit that is used to adjust power supply, it comprises:

  • Switch, it is coupling between first and second terminals, and a terminal in described first and second terminals is coupled to the input of described power supply, and another terminal is coupled to the input of the energy transmission of described power supply in described first and second terminals;

    Adjust circuit, it is coupled to the 3rd terminal, so that receive the feedback signal of the output level of the described power supply of expression, generation has the feedback states signal of first feedback states and second feedback states, described first feedback states represents that described output level is higher than threshold level, described second feedback states represents that described output level is lower than described threshold level, the response of described adjustment circuit is adjusted the operation of described threshold level or is adjusted at least one operation in the described feedback signal and adjust described feedback states signal, can make the replying state of described feedback states signal when adjusting to the state that was right after before described adjustment to the adjustment of described feedback states signal;

    AndControl circuit, it is coupled to described switch and connects into and receives oscillator signal and described feedback states signal, and described control circuit responds described oscillator signal and described feedback states signal and controls the switching of described switch.

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