Invention Grant
US09203254B2 Power management circuit for a portable electronic device including USB functionality and method for doing the same
有权
一种便携式电子设备的电源管理电路,包括USB功能及其做法
- Patent Title: Power management circuit for a portable electronic device including USB functionality and method for doing the same
- Patent Title (中): 一种便携式电子设备的电源管理电路,包括USB功能及其做法
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Application No.: US13819168Application Date: 2011-08-25
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Publication No.: US09203254B2Publication Date: 2015-12-01
- Inventor: Alexandre Balmefrezol , Patrizia Milazzo , Giuseppe Platania , Vincenzo Polisi
- Applicant: Alexandre Balmefrezol , Patrizia Milazzo , Giuseppe Platania , Vincenzo Polisi
- Applicant Address: CH Plan-les-Ouates
- Assignee: ST-ERICSSON SA
- Current Assignee: ST-ERICSSON SA
- Current Assignee Address: CH Plan-les-Ouates
- Agency: Coats & Bennett, PLLC
- Priority: EP10368034 20100826
- International Application: PCT/EP2011/004256 WO 20110825
- International Announcement: WO2012/025231 WO 20120301
- Main IPC: H01M10/46
- IPC: H01M10/46 ; H02J7/00 ; G06F1/26 ; H02J1/10

Abstract:
A Power Management Circuit for a portable electronic device comprising an internal battery to be charged either through a first interface or through an AC_DC conversion circuit. The circuit comprises a first buck/boost converter having a Switched Mode Power Supply (SMPS) mode which can be controlled either in a buck or a boost mode, said first buck/boost controller being associated with a first external coil for the purpose of embodying a battery charging circuit through a first interface (USB). The circuit further comprises a second buck/boost converter which can also be controlled either in a buck or a boost mode. Bypass circuits are used for performing, under control of a control circuit, the bypass of either the voltage of the battery or the voltage generated by said buck/boost controllers when in boost mode to a second interface (SIM/MMC).
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