公开(公告)号：US11588510B2

公开(公告)日：2023-02-21

申请号：US17125376

申请日：2020-12-17

Applicant: ASIAN POWER DEVICES INC.

Inventor： Yeu-Torng Yau ,  Tsung-Liang Hung

IPC: H04B1/04 ,  H04B1/16

Abstract: A network communication power supply with digital signal isolation includes a transformer, a transformer drive circuit, a rectifier, and a modulation signal duty cycle detection circuit. The transformer has a primary side and a secondary side. The transformer drive circuit is coupled to the primary side, and receives a digital signal input. The transformer drive circuit converts the digital signal input into a drive signal with a duty cycle corresponding to a logic level of the digital signal input according to the logic level. The digital signal input includes a power content. The rectifier is coupled to the secondary side and converts the power content to provide a power source. The modulation signal duty cycle detection circuit is coupled to the rectifier and supplied power by the power source, and provides a digital signal output with a high or low level according to the duty cycle.

公开(公告)号：US11532980B2

公开(公告)日：2022-12-20

申请号：US17027125

申请日：2020-09-21

Applicant: ASIAN POWER DEVICES INC.

Inventor： Yeu-Torng Yau ,  Tsung-Liang Hung

IPC: H02M1/42 ,  H02M3/00 ,  H02M1/32 ,  H02M1/00

Abstract: A conversion apparatus with overload control includes a primary conversion circuit, a resonant conversion circuit, and a control unit. The control unit controls a voltage value of a DC power source outputted from the primary conversion circuit according to a current signal of an output current of the resonant conversion circuit. When the control unit realizes that the output current exceeds a rated current according to the current signal, the control unit steps up the voltage value of the DC power source.

公开(公告)号：US11431248B2

公开(公告)日：2022-08-30

申请号：US17027052

申请日：2020-09-21

Applicant: ASIAN POWER DEVICES INC.

Inventor： Yeu-Torng Yau ,  Tsung-Liang Hung

IPC: H02M3/155 ,  H02M1/00 ,  G01R19/00

Abstract: A hysteresis voltage detection circuit includes a voltage stabilizing unit, a first power switch, a first voltage dividing resister, a second voltage dividing resister, a third voltage dividing resistor and a second power switch. The voltage stabilizing unit is coupled to an adjustable voltage source. When both the first power switch and the second power switch are turned on, the first voltage dividing resistor, the second voltage dividing resistor, and the third voltage dividing resistor divide the adjustable voltage source. When both the first power switch and the second power switch are turned off, the first voltage dividing resistor and the second voltage dividing resistor divide the adjustable voltage source.

公开(公告)号：US11095207B1

公开(公告)日：2021-08-17

申请号：US16859147

申请日：2020-04-27

Applicant: ASIAN POWER DEVICES INC.

Inventor： Yeu-Torng Yau ,  Tsung-Liang Hung

IPC: H02M1/42 ,  H02M1/00 ,  H02M3/157 ,  H02M7/06

Abstract: A power factor correction circuit with burst setting includes a conversion circuit, a control unit, and a burst setting circuit. The burst setting circuit respectively sets at least one burst period when an input power source is at a rising edge of a positive half cycle, a falling edge of the positive half cycle, the rising edge of a negative half cycle, and the falling edge of the negative half cycle, and provides a burst setting signal corresponding to the at least one burst period to the control unit so that the control unit limits the conversion circuit to perform a burst operation during the at least one burst period.