P

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 patents
USD909296SFeb 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 patents

LIU HUAN

1 patent