Invention Grant
- Patent Title: Pre-charging mechanism for multi-input switching charger
- Patent Title (中): 多输入开关充电器预充机构
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Application No.: US14154061Application Date: 2014-01-13
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Publication No.: US09411387B2Publication Date: 2016-08-09
- Inventor: Prasanna Obala Bhuvanesh , Jay Edward Ackerman , Michael Owen Baker , Ryan Michael Desrosiers
- Applicant: BROADCOM CORPORATION
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J7/14 ; G06F1/00 ; G06F1/26

Abstract:
A circuit for a switching charger includes multiple input supply nodes, and a number of charging paths. Each input supply node is connectable to a power source. Each charging path may include a middle node connected to a coupling switch and a pass transistor. The coupling switch may be configured to activate a corresponding charging path of the charging paths. A pre-charging switch may be coupled to a corresponding middle node of each charging path. The pass transistor of an activated one of the charging paths may be configured to provide a switching voltage at an input of a charging sub-circuit. The pre-charging switch may be configurable to pre-charge a middle node of a non-activated path to a high voltage to prevent an unwanted high current passing through a body diode of a corresponding pass transistor of the non-activated path.
Public/Granted literature
- US20150137766A1 PRE-CHARGING MECHANISM FOR MULTI-INPUT SWITCHING CHARGER Public/Granted day:2015-05-21
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