公开(公告)号：US11031867B2

公开(公告)日：2021-06-08

申请号：US16202463

申请日：2018-11-28

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Mikel Ash ,  Eric J. King ,  Lingli Zhang ,  Graeme G. Mackay

IPC: H02M1/00 ,  H02M3/157 ,  H04R3/00 ,  H03M1/06 ,  H02M3/158

Abstract: A method may include controlling switching behavior of switches of a switch-mode power supply based on a desired physical quantity associated with the switch-mode power supply, wherein the desired physical quantity is based at least in part on a slope compensation signal and generating the slope compensation signal to have a compensation value of approximately zero at an end of a duty cycle of operation of the switch-mode power supply.

公开(公告)号：US12160248B2

公开(公告)日：2024-12-03

申请号：US18098544

申请日：2023-01-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vamsikrishna Parupalli ,  Mikel Ash ,  Jianping Wen ,  Melvin L. Hagge

IPC: H03M1/46 ,  H03M1/80

Abstract: A SAR ADC may include a plurality of capacitor networks, wherein each capacitor network of a plurality of capacitor networks has a plurality of sampling capacitors for sampling over a plurality of sampling sub-phases an analog input signal to the SAR ADC and at least one non-sampling capacitor. The SAR ADC may also include a DAC comprising a plurality of sub-DACs including at least a first sub-DAC representing most significant bits of an output of the SAR ADC, wherein the output of the first sub-DAC is coupled to the sampling capacitors of the plurality of capacitor networks and a second sub-DAC representing bits of the output of the SAR ADC lesser in magnitude significance than those of the first sub-DAC, wherein the output of the second sub-DAC is coupled to a respective one of at least one non-sampling capacitor of each of the plurality of capacitor networks.

公开(公告)号：US10715039B1

公开(公告)日：2020-07-14

申请号：US16294581

申请日：2019-03-06

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Anand Ilango ,  Mikel Ash

IPC: H02M3/156 ,  G01R19/175 ,  H02M1/00

Abstract: A method for controlling a current mode switch mode power supply may include detecting a peak inductor current of a power inductor of the current mode switch mode power supply, estimating a load current based on a variable of a main control loop of the current mode switch mode power supply, detecting, within a main control loop of the current mode switch mode power supply, whether the load current is lower in magnitude than an estimated boundary condition current threshold, the estimated boundary condition current threshold defining a crossover threshold between operation of the current mode switch mode power supply in a continuous conduction mode and operation of the current mode switch mode power supply in a discontinuous conduction mode, and responsive to the load current being lower in magnitude than the estimated boundary condition current, causing pulse skipping of an output signal of the current mode switch mode power supply on an immediately subsequent switching cycle of the current mode switch mode power supply.