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    • 10. 发明授权
    • Switching circuit, DC-DC converter and display driver integrated circuit including the same
    • 开关电路,DC-DC转换器和显示驱动器集成电路包括相同的
    • US08350840B2
    • 2013-01-08
    • US12587512
    • 2009-10-08
    • Hyo Jin KimJae Sung KangSi Woo KimJong-Hyun Kim
    • Hyo Jin KimJae Sung KangSi Woo KimJong-Hyun Kim
    • H03K17/687G06F3/038
    • H03K17/693H02J7/0065
    • A switching circuit and a DC-DC converter including the same are provided. The switching circuit includes an output terminal, a plurality of input terminals, and a plurality of switches configured to selectively connect the plurality of input terminals to the output terminal. The plurality of switches include a first switch directly connected to the output terminal and a plurality of second switches connecting the plurality of input terminals to the first switch. The first switch is implemented using a high-voltage transistor. Each of the second switches is implemented using a low-voltage transistor. A gate of the high-voltage transistor is at least two times longer than a gate of the low-voltage transistor. The DC-DC converter increases or decreases a signal selected from among a plurality of input signals input through the input terminals by a predetermined voltage level. Most of switches in the switching circuit are implemented using low-voltage transistors, thereby decreasing the area of the switching circuit.
    • 提供一种开关电路和包括该开关电路的DC-DC转换器。 开关电路包括输出端子,多个输入端子以及被配置为将多个输入端子选择性地连接到输出端子的多个开关。 多个开关包括直接连接到输出端子的第一开关和将多个输入端子连接到第一开关的多个第二开关。 第一个开关是使用高压晶体管实现的。 使用低压晶体管来实现每个第二开关。 高压晶体管的栅极比低压晶体管的栅极长至少两倍。 DC-DC转换器将从输入端子输入的多个输入信号中选出的信号增加或减少预定的电压电平。 开关电路中的大多数开关使用低压晶体管来实现,从而减小开关电路的面积。