Patent ID: 11955894
Assignee: SILANNA ASIA PTE LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The method of claim 4, wherein:
the valley tuning finite-state machine comprises:
a storage device that includes the look-up table; and
a logic circuit; and

the method further comprises:
determining, by the logic circuit, a length of time that corresponds to the pulse width of each pulse of the plurality of pulses of the comparison signal, wherein the length of time corresponds to the half-period of the oscillation ripple;
producing, by the logic circuit, the divided pulse width from each pulse width, wherein the divided pulse width corresponds to the quarter-period of the oscillation ripple;
determining, by the logic circuit, that the auxiliary signal is less than the reference voltage;
waiting, by the logic circuit, the time period that corresponds to the divided pulse width stored in the look-up table if the auxiliary signal is less than the reference voltage; and
producing, by the logic circuit, the valley point signal after waiting the time period.