Inventor
XU DAOFEI
CN40 patents
⚠️ This page may combine multiple inventors who share the name “XU DAOFEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DELTA ELECTRONICS SHANGHAI CO
34 patentsUSD909296SFeb 2, 2021
Power adapter
DELTA ELECTRONICS SHANGHAI CO17 citations94
USD864112SOct 22, 2019
Power adapter
DELTA ELECTRONICS SHANGHAI CO32 citations94
US9991811B1Jun 5, 2018
Control method and control apparatus for flyback circuit
DELTA ELECTRONICS SHANGHAI CO31 citations93
US10333417B2Jun 25, 2019
Device and method for controlling flyback converter
DELTA ELECTRONICS SHANGHAI CO12 citations84
US10291136B2May 14, 2019
Control device and control method
DELTA ELECTRONICS SHANGHAI CO11 citations84
USD1005953SNov 28, 2023
Magnetic core
DELTA ELECTRONICS SHANGHAI CO1 citations73
USD997876SSep 5, 2023
Magnetic core
DELTA ELECTRONICS SHANGHAI CO1 citations73
USD912626SMar 9, 2021
Magnetic core
DELTA ELECTRONICS SHANGHAI CO2 citations73
US10797603B2Oct 6, 2020
Method and apparatus for controlling a flyback converter
DELTA ELECTRONICS SHANGHAI CO2 citations73
US10333418B2Jun 25, 2019
Control device and control method
DELTA ELECTRONICS SHANGHAI CO6 citations73
US9641083B2May 2, 2017
Control device and control method of power converter and switching power supply using the same
DELTA ELECTRONICS SHANGHAI CO2 citations68
USD1103106SNov 25, 2025
Magnetic core
DELTA ELECTRONICS SHANGHAI CO0 citations62
US12027299B2Jul 2, 2024
Winding assembly and magnetic element
DELTA ELECTRONICS SHANGHAI CO0 citations62
US11774516B2Oct 3, 2023
Detecting method for an operating state of a power supply and a detecting apparatus
DELTA ELECTRONICS SHANGHAI CO0 citations62
US11711017B2Jul 25, 2023
Adapter and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations62
US11575315B2Feb 7, 2023
Totem-pole power factor correction circuit
DELTA ELECTRONICS SHANGHAI CO1 citations62
USD932435SOct 5, 2021
Magnetic core
DELTA ELECTRONICS SHANGHAI CO0 citations62
US11737219B2Aug 22, 2023
Power adapter
DELTA ELECTRONICS SHANGHAI CO0 citations52
US11616449B2Mar 28, 2023
Power adapter
DELTA ELECTRONICS SHANGHAI CO0 citations52
US11581119B2Feb 14, 2023
Magnetic device and method of manufacturing the same
DELTA ELECTRONICS SHANGHAI CO0 citations52
US11489440B2Nov 1, 2022
Power factor correction circuit
DELTA ELECTRONICS SHANGHAI CO0 citations52
US11349397B2May 31, 2022
Method and apparatus for controlling a flyback converter
DELTA ELECTRONICS SHANGHAI CO0 citations52
US11303081B2Apr 12, 2022
Power adapter and electronic device comprising the power adapter
DELTA ELECTRONICS SHANGHAI CO0 citations52
US10998683B2May 4, 2021
Connector protection method and system
DELTA ELECTRONICS SHANGHAI CO0 citations52
US10998118B2May 4, 2021
PCB winding transformer and coil board thereof
DELTA ELECTRONICS SHANGHAI CO0 citations52
US12289055B2Apr 29, 2025
Flyback circuit and control method of clamping switch of flyback circuit
DELTA ELECTRONICS SHANGHAI CO0 citations50
US11699958B2Jul 11, 2023
Voltage switching circuit and power adapter having regulated range of output voltage
DELTA ELECTRONICS SHANGHAI CO0 citations50
US11973430B2Apr 30, 2024
Converter adaptable to wide range output voltage and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations49
US11777408B2Oct 3, 2023
Converter adaptable to wide range output voltage and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations49
US12562649B2Feb 24, 2026
Flyback power converter and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations47
US12542494B2Feb 3, 2026
Flyback power converter and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations47
US12401262B2Aug 26, 2025
Power adapter with limited power source function and control method thereof
DELTA ELECTRONICS SHANGHAI CO0 citations47
US11824456B2Nov 21, 2023
Hybrid flyback circuit and control method
DELTA ELECTRONICS SHANGHAI CO0 citations46
US9608529B2Mar 28, 2017
Converter and method for controlling the same
DELTA ELECTRONICS SHANGHAI CO0 citations41
DELTA ELECTRONICS INC
5 patentsUS9787193B2Oct 10, 2017
Switching power supply and method for controlling voltage of bulk capacitor in the switching power supply
DELTA ELECTRONICS INC3 citations73
US10141853B2Nov 27, 2018
Power converter and method of control thereof
DELTA ELECTRONICS INC3 citations71
US10637365B2Apr 28, 2020
Flyback converter and control method thereof
DELTA ELECTRONICS INC1 citations62
USRE50277EJan 21, 2025
Power converter and method of control thereof
DELTA ELECTRONICS INC0 citations60
US7864547B2Jan 4, 2011
Power supply module adapted to power a control circuit of a switching mode power supply
DELTA ELECTRONICS INC0 citations51