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    • 2. 发明专利
    • Inverse level shift circuit
    • 反相电平转换电路
    • JP2014049959A
    • 2014-03-17
    • JP2012191906
    • 2012-08-31
    • Mitsubishi Electric Corp三菱電機株式会社
    • NAKAJIMA TANKIIMANISHI MOTONORISAKAI KENJI
    • H03K19/0185
    • H03K17/063H03K2217/0063
    • PROBLEM TO BE SOLVED: To implement a stable inverse level shift operation despite a fluctuation in a high side reference potential.SOLUTION: Transistors HVPMOS1, HVPMOS2 are driven by first and second driving signals generated with a high side reference potential used as a reference potential. Output signals of the transistors HVPMOS1, HVPMOS2 are voltage-converted to a low side to generate first and second main signals and first and second mask signals. A mask signal generation circuit 6 generates a third mask signal more sensitive to a fluctuation in the high-side reference potential than the first and second mask signals. A mask logic circuit 7 performs an AND operation on the first mask signal and the second mask signal to generate a fourth mask signal, and masks the first and second main signals with both the third mask signal and the fourth mask signal. An SR flip-flop circuit 10 generates an output signal from the first and second main signals thus masked.
    • 要解决的问题:尽管高侧参考电位波动,但是实现了稳定的反电平移位操作。解决方案:晶体管HVPMOS1,HVPMOS2由用作参考电位的高侧参考电位产生的第一和第二驱动信号驱动。 晶体管HVPMOS1,HVPMOS2的输出信号被电压转换为低端,以产生第一和第二主信号以及第一和第二屏蔽信号。 掩模信号发生电路6产生比第一和第二屏蔽信号对高侧参考电位的波动更敏感的第三屏蔽信号。 掩模逻辑电路7对第一掩模信号和第二掩模信号执行“与”运算,以产生第四屏蔽信号,并利用第三屏蔽信号和第四屏蔽信号对第一和第二主信号进行掩蔽。 SR触发器电路10产生从被掩蔽的第一和第二主信号的输出信号。