公开(公告)号：US11165364B2

公开(公告)日：2021-11-02

申请号：US16283845

申请日：2019-02-25

Applicant: NXP B.V.

Inventor： Fuchun Zhan ,  Tinghua Yun ,  Jian Qing ,  Chao Chen ,  Li Zhang ,  Feng Cong

IPC: H02J7/00 ,  H02M7/219 ,  H02J7/02 ,  H02M1/08 ,  H02M1/00

Abstract: A synchronous rectifier converts an AC input into a DC output. The synchronous rectifier has four switches controlled by four switch control modules. Each switch is connected between a different AC component and either the DC output or ground. Each switch control module has digitally assisted “switch on” circuitry that detects “on” bounces in the corresponding AC component to control when to turn on the corresponding switch and digitally assisted “switch off” circuitry that detects “off” bounces in the AC component to control when to turn off the corresponding switch. The “switch on” circuitry has a digitally assisted comparator to detect threshold crossings in the AC component, and the “switch off” circuitry has a digitally assisted programmable delay cell to turn off the switch for a predetermined duration following each detected threshold crossing.

公开(公告)号：US20230006072A1

公开(公告)日：2023-01-05

申请号：US17807869

申请日：2022-06-21

Applicant: NXP B.V.

Inventor： Chao Chen ,  Zhouyi Luo ,  Feng Cong

IPC: H01L29/94 ,  H01L29/66 ,  H03F3/45

Abstract: A MIS capacitor and a method of making the same. The capacitor includes a semiconductor substrate having a first part having a first conductivity type and contact regions for coupling the first part to an output node. The substrate has dielectric on a surface of the first part and electrodes on the dielectric. The substrate has a second part having a second conductivity type and a third part having the first conductivity type. The third part is coupleable to a supply voltage. The second part is located between the first part and the third part. The first part and the second part form a first p-n junction and the second part and the third part form a second p-n junction. A reference contact is provided for coupling the second part to a reference voltage. A further contact region is provided for coupling the second part to the output node.