公开(公告)号：US11271472B2

公开(公告)日：2022-03-08

申请号：US16866942

申请日：2020-05-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Cheng-Yi Lin ,  Hung-Wen Chueh ,  Chun-Chih Chen

IPC: G05F1/46 ,  H02M1/32 ,  G05F1/567 ,  H02M1/36 ,  H02H1/00 ,  H02M7/537

Abstract: An over temperature compensation control circuit is coupled to a conversion unit. The over temperature compensation control circuit includes a detection circuit, a temperature control resistor, and a comparison unit. The detection circuit provides a current signal responsive to an input voltage according to a voltage signal responsive to the input voltage of the conversion unit. The temperature control resistor generates a temperature control voltage according to the current signal. The comparison unit compares the temperature control voltage with a reference voltage to generate a control signal. The control signal represents whether a temperature of the conversion unit reaches an over temperature protection point.

公开(公告)号：US11967906B2

公开(公告)日：2024-04-23

申请号：US17963733

申请日：2022-10-11

Applicant: DELTA ELECTRONICS, INC.

Inventor： Sheng-Yu Wen ,  Cheng-Yi Lin ,  Ting-Yun Lu

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33592 ,  H02M1/0095 ,  H02M3/33571 ,  H02M3/33576

Abstract: A hybrid power conversion circuit includes a high-side switch, a low-side switch, a transformer, a resonance tank, a first switch, a second switch, a first synchronous rectification switch, a second synchronous rectification switch, and a third switch. The resonance tank has an external inductor, an external capacitance, and an internal inductor. The first switch is connected to the external inductor. The second switch and a first capacitance form a series-connected path, and is connected to the external capacitance. The first and second synchronous rectification switches are respectively coupled to a first winding and a second winding. The third switch is connected to the second synchronous rectification switch. When an output voltage is less than a voltage interval, the hybrid power conversion circuit operates in a hybrid flyback conversion mode, and otherwise the hybrid power conversion circuit operates in a resonance conversion mode.