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    • 9. 发明授权
    • System power integrated circuit and architecture, management circuit, power supply arrangement, and portable apparatus
    • 系统功率集成电路和架构,管理电路,电源布置和便携式设备
    • US09276428B2
    • 2016-03-01
    • US13331609
    • 2011-12-20
    • Hsun-Hsin ChuangChien-Shen TsaiYueh-Hsiang Chen
    • Hsun-Hsin ChuangChien-Shen TsaiYueh-Hsiang Chen
    • H02J7/00H02M1/00
    • H02J7/0065H02M2001/007Y10T307/406
    • According to one embodiment, a management circuit for a portable device includes an input terminal, a first step-up converter, a first step-down converter, and a second step-down converter. The input terminal is coupled to receive a supply voltage from a power supply. The first step-up converter, coupled to the input terminal, selectively converts the supply voltage to a boosted voltage. The first step-down converter, coupled to the first step-up converter, selectively provides a first output power voltage to a first radio frequency (RF) module. The second step-down converter, coupled to the first step-up converter, selectively provides a second output power voltage to a second radio frequency (RF) module. The first step-up converter performs the conversion of the supply voltage when the supply voltage is under a threshold voltage.
    • 根据一个实施例,用于便携式设备的管理电路包括输入端,第一升压转换器,第一降压转换器和第二降压转换器。 输入端子被耦合以从电源接收电源电压。 耦合到输入端的第一升压转换器选择性地将电源电压转换成升压电压。 耦合到第一升压转换器的第一降压转换器选择性地向第一射频(RF)模块提供第一输出功率电压。 耦合到第一升压转换器的第二降压转换器选择性地向第二射频(RF)模块提供第二输出功率电压。 当电源电压低于阈值电压时,第一升压转换器执行电源电压的转换。