| 摘要 |
Various techniques directed to the digital control of a switching regulator are disclosed. In one aspect, a method for regulating an output level at a power converter output includes receiving a feedback signal (137), representative of the output level at the power converter output. In response to a state of the power converter, at least one of the feedback signal or a threshold level (U TH ) is adjusted. A feedback state signal (124) is generated having a first feedback state that represents that the output level is above the threshold level and a second feedback state that represents that the output level is below the threshold level. A duty cycle signal that cycles is generated. In response to a control signal (125), energy from a power converter input is enabled or disabled to flow to the power converter output. The control signal is responsive to the duty cycle signal and to a change between the first and second feedback states. The control signal is also responsive to a change between the first and second feedback states. In another aspect, a circuit is provided for regulating an output level of a power converter. |
