公开(公告)号：US09424127B2

公开(公告)日：2016-08-23

申请号：US13950762

申请日：2013-07-25

Applicant: Broadcom Corporation

Inventor： Walid Nabhane ,  Mark D Rutherford ,  Narayan Prasad Ramachandran ,  David Chang ,  Yi Ting Chen ,  Chenmin Zhang ,  Ajmal A. Godil

IPC: G06F1/26 ,  G06F11/10 ,  G05F1/625 ,  G06F13/12 ,  G01R31/36 ,  H02J7/00 ,  G06F1/32 ,  G11C7/10 ,  G06F11/30 ,  G01R31/40 ,  G01R19/00

CPC classification number: G06F11/1048 ,  G01R19/003 ,  G01R31/36 ,  G01R31/40 ,  G05F1/625 ,  G06F1/26 ,  G06F1/3206 ,  G06F1/3287 ,  G06F11/1016 ,  G06F11/3031 ,  G06F11/3058 ,  G06F11/3062 ,  G06F11/3093 ,  G06F13/126 ,  G11C7/106 ,  G11C7/1072 ,  H02J7/0029 ,  Y02D10/171

Abstract: Aspects of charger detection and optimization prior to host control are described herein. In various embodiments, a condition of whether reverse current is present on a system bus is detected. When the condition for reverse current is present, reverse current is sunk by one or more of various reverse current sink circuits. By relying upon one or more of the reverse current sink circuits, for safety, to address or mitigate the condition for reverse current, a detector may be able to identify or distinguish among several different types of charger or charging ports coupled to a system bus allowing a charger to be selected optimally. Further, an indicator of the type of charger or charging port coupled to the system bus is communicated over a single pin interface, for backwards compatibility with circuits capable of identifying between only two different types of chargers.

Abstract translation: 这里描述了在主机控制之前的充电器检测和优化的方面。 在各种实施例中，检测到在系统总线上是否存在反向电流的状况。 当存在反向电流的条件时，反向电流被各种反向电流吸收电路中的一个或多个吸收。 通过依靠一个或多个反向电流宿电路，为了安全起见，寻址或减轻反向电流的条件，检测器可能能够识别或区分耦合到系统总线的几种不同类型的充电器或充电端口，允许 要充分选择充电器。 此外，耦合到系统总线的充电器或充电端口的类型的指示器通过单个引脚接口传送，以便与仅能够识别两种不同类型的充电器之间的电路向后兼容。