High voltage circuits in low voltage CMOS process
    1.
    发明授权
    High voltage circuits in low voltage CMOS process 失效
    低电压CMOS工艺中的高压电路

    公开(公告)号:US4490629A

    公开(公告)日:1984-12-25

    申请号:US376903

    申请日:1982-05-10

    摘要: A CMOS push-pull output buffer (171) is constructed utilizing a plurality of N channel transistors (74, 75, 76) and a plurality of P channel transistors (71, 72, 73) connected in series. The voltages applied to the gates of the N channel transistors and P channel transistors are selected to divide the high voltage (+V) substantially equally across the P channel transistors, when the P channel transistors are turned off, and substantially evenly divide the high voltage across the N channel transistors, when the N channel transistors are turned off.In another embodiment of this invention, selected ones of the N channel and P channel transistors are formed in order to have a high drain to bulk breakdown voltage.In another embodiment of this invention, a plurality of N channel and a plurality of P channel transistors are connected in series and driven by a single ended control voltage (C.sub.N), thus providing a first stage (101) which drives a second stage (100) having a plurality of P channel transistors and a plurality of N channel transistors (110, 111, 112), which provide the high voltage output voltage.In another embodiment of this invention, the first stage (101) is driven by a single ended control voltage (C.sub.N) and serves to drive a second stage (103) comprising a plurality of N channel transistors (110, 111, 112) and a plurality of bipolar transistors (120, 121), whereby said second stage provides the high voltage output signal.

    摘要翻译: 使用串联连接的多个N沟道晶体管(74,75,76)和多个P沟道晶体管(71,72,73)构造CMOS推挽输出缓冲器(171)。 当P沟道晶体管截止时,施加到N沟道晶体管和P沟道晶体管的栅极的电压被选择为在P沟道晶体管中基本上均匀地划分高电压(+ V),并且基本上均匀地划分高电压 跨越N沟道晶体管,当N沟道晶体管截止时。 在本发明的另一个实施例中,形成N沟道和P沟道晶体管中的选定的晶体管以便具有高的漏极到体的击穿电压。 在本发明的另一实施例中,多个N沟道和多个P沟道晶体管串联连接并由单端控制电压(CN)驱动,从而提供驱动第二级(100)的第一级(101) )具有提供高电压输出电压的多个P沟道晶体管和多个N沟道晶体管(110,111,112)。 在本发明的另一实施例中,第一级(101)由单端控制电压(CN)驱动,并用于驱动包括多个N沟道晶体管(110,111,112)的第二级(103)和 多个双极晶体管(120,121),由此所述第二级提供高电压输出信号。