公开(公告)号：US20220376600A1

公开(公告)日：2022-11-24

申请号：US17714937

申请日：2022-04-06

Applicant: Analog Devices, Inc.

Inventor： Owen Jong ,  Yingyi Yan ,  Ya Liu ,  Jindong Zhang

IPC: H02M1/00 ,  H02M3/158

Abstract: A current sensing technique for coupled inductors in switching regulator circuits, where the current sensing technique can provide the current information needed for a power converter design and can be implemented as a real-world solution. The current sensing techniques can provide complete information of the coupled inductor current, such as peak current, valley current, and intermediate ripples. The current sensing techniques can use a simple RC network, such as two resistors and two capacitors for 2-phase operation. The techniques, however, are not limited to two-phase operation. The current sensing techniques of this disclosure can be extended to power stage assembly implementations, e.g., DrMOS modules, with current output in order to increase signal-to-noise ratio, which is significant for reliable control. in addition, the current sensing techniques of this disclosure can be extended to multi-phase operation, such as three or more phases.

公开(公告)号：US20210376730A1

公开(公告)日：2021-12-02

申请号：US16906519

申请日：2020-06-19

Applicant: Analog Devices, Inc.

Inventor： Yingyi Yan ,  Yiding Gu

IPC: H02M3/158 ,  H03K5/24

Abstract: This disclosure describes techniques to control switching operations of a switching regulator. The disclosure includes a system comprising a switching regulator configured to use an inductor to generate an output voltage signal from a. pulse-width-modulated (PWM) signal by controlling one or more switches of the switching regulator that vary charging operations of the inductor; transient handling circuitry coupled to receive a feedback voltage based on the output voltage signal and configured to generate first and second current signals that represent a difference between the feedback voltage and a reference voltage; and control circuitry configured to generate the PWM signal based on the first and second current signals such that the first current signal changes a frequency of an oscillator used to generate the PWM signal and the second current signal changes a bandwidth of a feedback loop associated with the switching regulator.

公开(公告)号：US11581796B2

公开(公告)日：2023-02-14

申请号：US17248289

申请日：2021-01-19

Applicant: Analog Devices, Inc.

Inventor： Yingyi Yan ,  San Hwa Chee

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/088

Abstract: Pulse width modulation (PWM) controllers for hybrid converters are provided herein. In certain embodiments, a PWM controller for a hybrid converter includes a threshold generation circuit for generating a threshold signal based on an output voltage of the hybrid converter, a threshold adjustment circuit for generating an adjusted threshold signal based on sensing a voltage of a flying capacitor of the hybrid converter, and a comparator that generates a comparison signal based on comparing the adjusted threshold signal to an indication of an inductor current of the hybrid converter. The output of the comparator is used for generating PWM control signals used for turning on and off the switches (for instance, power transistors) of the hybrid converter.

公开(公告)号：US11489445B2

公开(公告)日：2022-11-01

申请号：US17066128

申请日：2020-10-08

Applicant: Analog Devices, Inc.

Inventor： Yingyi Yan

IPC: H02M3/158 ,  G01R19/00 ,  G01R31/40 ,  H02M1/32 ,  H02M1/00

Abstract: A switching converter circuit comprises an inductive circuit element; a driver switching circuit configured to provide energy to the inductive circuit element to generate an output voltage of the switching converter circuit, the output voltage having an alternating current (AC) signal component and a direct current (DC) signal component; a current sensing circuit configured to generate a current sense signal representative of inductor current of the inductive circuit element, wherein an output of the current sensing circuit is coupled to a bias circuit node; and a dynamic bias circuit configured to apply a dynamic bias voltage to the bias circuit node, wherein the dynamic bias voltage includes an AC component that tracks the AC signal component of the output voltage.

公开(公告)号：US20220231618A1

公开(公告)日：2022-07-21

申请号：US17248289

申请日：2021-01-19

Applicant: Analog Devices, Inc.

Inventor： Yingyi Yan ,  San Hwa Chee

IPC: H02M7/5395 ,  H02M7/5387 ,  H02M3/157 ,  H02M3/158 ,  H02M1/08

Abstract: Pulse width modulation (PWM) controllers for hybrid converters are provided herein. In certain embodiments, a PWM controller for a hybrid converter includes a threshold generation circuit for generating a threshold signal based on an output voltage of the hybrid converter, a threshold adjustment circuit for generating an adjusted threshold signal based on sensing a voltage of a flying capacitor of the hybrid converter, and a comparator that generates a comparison signal based on comparing the adjusted threshold signal to an indication of an inductor current of the hybrid converter. The output of the comparator is used for generating PWM control signals used for turning on and off the switches (for instance, power transistors) of the hybrid converter.