Innoscience (Suzhou) Technology Co., Ltd.

Innoscience (Suzhou) Semiconductor Co., Ltd.

Fada Du

Yanbo Zou

Chao Tang

Wenjie Lin

Tao Zhang

Yulin Chen

Wenbin Xie

The present invention provides a multi-functional printed circuit board (PCB) for assembling a plurality of components of a power converter in to a single package. The PCB comprises: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the plurality of components of the power converter.

Multi-functional PCB for assembling GaN-based power converter

The present invention provides a nitride-based power factor correction (PFC) circuit for improving power distribution efficiency from an AC power supply to a load. The PFC circuit comprises a nitride-based bidirectional switch and a controlling circuit having a first switching node and a second switching node electrically coupled to a first control terminal and a second control terminal of the bidirectional switch respectively. The provided nitride-based PFC circuit has high efficiency over a broad range of input voltage, a simpler circuit topology with smaller component size.

Nitride-based power factor correction circuit and method for implementing the same

The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler.

High efficiency and high density GaN-based power converter and method for manufacturing the same

High efficiency and high density GaN-based power converter

Multi-functional PCB for assembling GaN-based power converter and method for manufacturing the same

The subject application provides a power converter with lossless current sensing capability. The power converter comprises: a transformer, a primary switch for conducting or blocking a current flowing in a primary winding of the transformer, a controller configured to generate a first control signal through a first control node to control the primary switch; and a current sensing circuit configured for sensing a current flowing in the primary winding. The current sensing circuit comprises a current sensing switch that is configured to be normally open and has a gate length smaller than a gate length of the primary switch. A relatively simple current sensing circuit is achieved and the overall power efficiency is improved.

Power converter with lossless current sensing capability and method for implementing the same

The present disclosure provides a controller for controlling a GaN-based semiconductor device. The controller is configured to receive a current sensing signal Vwhich is indicative of a drain-to-source current of the GaN-based semiconductor device and generate a control driving signal Vto the GaN-based semiconductor device such that a gate-to-source voltage Vapplied to the GaN-based semiconductor device for switching on the GaN-based semiconductor device is stabilized to a voltage value equal to a reference voltage Vover an on-time duration. Impact of the change in the voltage drop across the current sensing resistor to the operation of the GaN-based semiconductor device is eliminated.

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Suzhou, China

Fada Du