公开(公告)号：WO2018057214A1

公开(公告)日：2018-03-29

申请号：PCT/US2017/048279

申请日：2017-08-23

Applicant: APPLE INC.

Inventor： ATTAH, Hubert ,  FLETCHER, Jay B. ,  TORRES, Erick O. ,  GOZZINI, Fabio

IPC: H02M3/157

CPC classification number: H03K21/026 ,  H02M3/157 ,  H03K19/21

Abstract: An apparatus is disclosed, including a driver circuit, a comparator circuit, and a counter circuit. The driver circuit may be configured to source a current to a load circuit. The comparator circuit may be configured to perform a comparison of a reference voltage to a voltage across the load circuit. The counter circuit may be configured to modify a digital count value based on the comparison. The driver circuit may be further configured to adjust a value of the current using the digital count value.

Abstract translation: 公开了一种装置，其包括驱动器电路，比较器电路和计数器电路。 驱动器电路可以被配置为向负载电路供应电流。 比较器电路可以被配置为执行参考电压与负载电路两端的电压的比较。 计数器电路可以被配置为基于比较修改数字计数值。 驱动器电路可以被进一步配置为使用数字计数值来调整电流值。