Inventor

MAO HENGCHUN

US99 patents

⚠️ This page may combine multiple inventors who share the name “MAO HENGCHUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MAO HENGCHUN

LUCENT TECHNOLOGIES INC

Switching controller for a buck+boost converter and method of operation thereof

Three-level boost rectifier with voltage doubling switch

Post regulator with energy recovery snubber and power supply employing the same

Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof

System and method for controlling power factor and power converter employing the same

Energy recovery snubber circuit for bidirectional power converter and method of operation thereof

Temperature compensation circuit for semiconductor switch and method of operation thereof

Power factor correcting electrical converter apparatus

Snubber circuit for a power switch and recitifying diode and power converter employing the same

AC bus system with battery charger/inverter backup

Frequency modulation controller for single-switch, polyphase, DCM boost converter and method of operation thereof

Power supply snubber reset circuit

Phase selection circuit for three phase power converter and method of operation thereof

Integrated three-phase power converter and method of operation thereof

Switching network and method of reducing input current total harmonic distortion associated with a boost converter and a boost converter employing the switching network or method

Three-phase boost converter having multiple L-C branches and method of operation thereof

Snubber circuit for a power converter and method of operation thereof

Three-phase boost converter having wye-connected input capacitors and method of operation thereof

Power supply providing backup AC voltage and method of operation thereof

Dual output power supply and method of operation thereof

Self-regulating lossless snubber circuit

Power converter with voltage dependent switchable modes

FUTUREWEI TECHNOLOGIES INC

Resonant converters and methods

High efficiency bridgeless PFC converter and method

Power converter package structure and method

Auxiliary resonant apparatus for LLC converters

Apparatus for resonant converters

Resonant converters and methods

Resonant converters and methods

NETPOWER TECHNOLOGIES INC

Power converter including circuits for improved operational control of synchronous rectifiers therein

Soft start for a synchronous rectifier in a power converter

Plural power converters with individual conditioned error signals shared on a current sharing bus

Method and circuit for reducing voltage level variation in a bias voltage in a power converter

MAO HENGCHUN

High efficiency power amplifiers with advanced power solutions

Dynamically reconfigurable motor and generator systems

High efficiency high power density power architecture based on buck-boost regulators with a pass-through band

Dynamically reconfigurable motors and generators and systems

(unassigned)

Controller for power factor corrector and method of operation thereof

Regulation circuit for a power converter and method of operation thereof

Current-fed dc/dc converter with multilevel transformer and method of operation thereof

NUVOLTA TECH

Wireless power transfer system and method

Wireless power transfer system and method

Zero voltage switching half-bridge converters

QUANTEN TECH INC

Motor system and control method

Motor/generator system and fault tolerant control method

FU DIANBO

Holdup time circuit and method for bridgeless PFC converter

Common mode noise reduction apparatus and method

INNOVATIVE TECH CENTER

Zero-voltage-transition (ZVT) 3-phase PWM voltage link converters

NUVOLTA TECH INC

High efficiency high frequency resonant power conversion

QUANTEN TECH LIMITED

High efficiency high frequency resonant power conversion