A LEVEL SHIFTER CIRCUIT, CORRESPONDING APPARATUS AND METHOD
    2.
    发明公开
    A LEVEL SHIFTER CIRCUIT, CORRESPONDING APPARATUS AND METHOD 审中-公开
    一种电平移位电路,相应的装置和方法

    公开(公告)号:EP3174203A1

    公开(公告)日:2017-05-31

    申请号:EP16176683.7

    申请日:2016-06-28

    Abstract: In an embodiment, a level shifter circuit for driving a load (HSP) via a power supply line (HVP) includes:
    - an input stage (CL) for receiving an input signal (IN) switchable between a first and a second input level (0, LVP),
    - an output stage (LL, A) coupled to the power supply line (HVP) to produce a drive signal (G) for the load (HSP), the output stage (LL, A) switchable between a first and a second output level (REF_HVP, HVP),
    - a level translator (LT) set between the input stage (CL) and the output stage (LL, A), whereby the input signal (IN) switching between the first and second input levels (0, LVP) translates into the output stage (LL, A) switching between the first and second output levels (REF_HVP, HVP)-
    A feedback element (10) is provided coupled to the output stage (LL, A) for transferring to the input stage (CL) a feedback signal (20) representative of the output level of the output stage (LL, A); the input stage (CL) includes control circuitry (12 to 18, 22) sensitive to the input signal (IN) and the feedback signal (Q_N) for detecting undesired switching of the output stage (LL, A) between the first and second output levels (REF_HVP, HVP) occurring in the absence of input signal (IN) switching between the first and second input levels (0, LVP), the control circuitry (12 to 22) being configured (22) for inverting the output level (Q_N) of the output stage (LL, A) resulting from undesired switching.

    Abstract translation: 在一个实施例中,用于经由电源线(HVP)驱动负载(HSP)的电平移位器电路包括: - 输入级(CL),用于接收可在第一和第二输入电平 0,LVP), - 耦合到电源线(HVP)以产生用于负载(HSP)的驱动信号(G)的输出级(LL,A),输出级(LL,A) 和第二输出电平(REF_HVP,HVP), - 在输入级(CL)和输出级(LL,A)之间设置的电平转换器(LT),由此输入信号(IN)在第一和第二输入 电平(0,LVP)转换成在第一和第二输出电平(REF_HVP,HVP)之间切换的输出级(LL,A)。提供耦合到输出级(LL,A)的反馈元件(10) 将代表输出级(LL,A)的输出电平的反馈信号(20)提供给输入级(CL); 输入级(CL)包括对输入信号(IN)和反馈信号(Q_N)敏感的控制电路(12至18,22),用于检测第一和第二输出之间的输出级(LL,A)的不希望的切换 在第一和第二输入电平(0,LVP)之间不存在输入信号(IN)切换的情况下发生的电平(REF_HVP,HVP),控制电路(12至22)被配置为用于将输出电平(Q_N )由不希望的切换引起的输出级(LL,A)。

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