Patent ID: 11901826
Assignee: DELTA ELECTRONICS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 6:
7. The power converter of claim 1, wherein the first pair of switching device comprises a first switching device and a second switching device, the second pair of switching device comprises a third switching device and a fourth switching device, the first switching device, the second switching device, the third switching device, and the fourth switching device are controlled by a first switch control signal, a second switch control signal, a third switch control signal, and a fourth switch control signal, respectively, wherein the first modulation mode in which (i) the first and second switch control signals are substantially complementary with each other and the third and fourth switch control signals are substantially complementary with each other, (ii) the first, second, third, and fourth switch control signals are periodic with a common switching period, (iii) within the common switching period, (1) each switch control signal of the first to fourth switch control signals has two rising edges and two falling edges; and either (2) the first rising edge of the first switch control signal lags the first rising edge of the fourth switch control signal by a first predetermined time, while the second rising edge of the first switch control signal leads the second rising edge for the fourth switch control signal by a second predetermined time, or (3) the first rising edge of the first switch control signal leads the first rising edge of the fourth switch control signal by a first predetermined time, while the second rising edge of the first switch control signal lags the second rising edge for the fourth switch control signal by a second predetermined time, and (iv) the control circuit varies the common switching period, the first predetermined time, and the second predetermined time.