Voltage-based auto-correction of switching time
AssigneeShenzhen Goodix Technology Co., Ltd.
InventorsSiavash Yazdi, Faisal Hussien
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Abstract
A method for controlling a load-current zero-crossing of a switching regulator having a high-side switch and a low-side switch includes detecting, by a spike detection circuit, a presence of a spike on an output voltage of the switching regulator, determining, by the spike detection circuit, in the event that a spike is present, whether the spike is a positive spike or a negative spike, and adjusting a turn-off timing of the low-side switch based on a determination result.
Claims20
A voltage regulator for supplying an output voltage to a load, the voltage regulator comprising:
- a switching module comprising a high-side switch and a low-side switch connected in series for generating the output voltage based on an input voltage;
- and
- a spike detection circuit configured to detect a presence of a glitch on the output voltage, and in the event that the glitch is present, determine whether the glitch is a positive glitch higher than the input voltage or a negative glitch, and adjust a turn-off timing of the low-side switch based on a determination result.
A method for controlling a load-current zero-crossing of a switching regulator having a high-side switch and a low-side switch, the method comprising:
- generating, by the switching regulator, an output voltage based on an input voltage;
- detecting, by a spike detection circuit, a presence of a glitch on the output voltage of the switching regulator;
- determining, by the spike detection circuit, in the event that the glitch is present, whether the glitch is a positive glitch higher than the input voltage or a negative glitch;
- adjusting a turn-off timing of the low-side switch based on a determination result.
Dependencies are inferred from the claim text.