公开(公告)号：US20230188156A1

公开(公告)日：2023-06-15

申请号：US17990098

申请日：2022-11-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ivan PERRY ,  Hasnain AKRAM ,  Graeme G. MACKAY ,  Pietro GALLINA ,  Chanchal GUPTA ,  Bryan QUINONES ,  Abhishek RAY

IPC: H03M1/74 ,  H04R1/00

CPC classification number: H03M1/742 ,  H04R1/005

Abstract: A power converter system for converting an input voltage at an input into an output voltage at an output may comprise a switch network comprising a reactive circuit element and a plurality of switches, switch control circuitry configured to operate the plurality of switch in a plurality of periodic, sequential states to regulate the output voltage, and reference current generating circuitry. The reference current generating circuitry may include a comparator coupled to a sensed switch of the plurality of switches and configured to compare a current flowing through the sensed switch to a reference current and current-steering circuitry coupled to the comparator configured to generate the reference current and alternate the reference current between a first reference current and a second reference current whenever the switch control circuitry changes from one state of the plurality of periodic, sequential states to another state of the plurality of periodic, sequential states.

公开(公告)号：US20250062674A1

公开(公告)日：2025-02-20

申请号：US18450552

申请日：2023-08-16

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Shashank ALEVOOR ,  Siddharth MARU ,  Pietro GALLINA ,  Chanchal GUPTA ,  Vivek PARASURAM

IPC: H02M1/00 ,  H02M3/157 ,  H02M3/158

Abstract: A method may include, when in a low-power mode of a power converter, monitoring an output voltage of the power converter; comparing, with a single comparator, the output voltage to a first threshold voltage and cause the power converter to enter a magnetization phase of the low-power mode responsive to the output voltage falling below the first threshold voltage; and during the magnetization phase and a demagnetization phase of the low-power mode, comparing, with the single comparator, the output voltage to a second threshold voltage lower than the first threshold voltage and cause the power converter to enter the high-power mode responsive to the output voltage falling below the second threshold voltage.

公开(公告)号：US20240333127A1

公开(公告)日：2024-10-03

申请号：US18697813

申请日：2023-03-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Siddharth MARU ,  Bryan MCCOY ,  Chanchal GUPTA ,  Rosario PAGANO

IPC: H02M1/00 ,  H02M3/156 ,  H02M3/158

CPC classification number: H02M1/0032 ,  H02M3/1566 ,  H02M3/158

Abstract: The controller for a system including a power converter may be configured to cause the system to operate in one of a low-power mode and the high-power mode based on power demand from a load at the output of the power converter and when in the low-power mode, monitor the output of the power converter to detect an occurrence of a load transient from the load and in response to detecting the occurrence of the load transient, transition from the low-power mode to the high-power mode via a transition mode to minimize undershoot and overshoot of the output voltage.