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Level shift circuit

A technology of level shifting circuit and level signal, which is applied in the direction of logic circuit connection/interface layout, logic circuit coupling/interface using field effect transistors, etc., which can solve the problem of high power consumption of level shifting circuit and achieve peak current reduction , Power consumption reduction, the effect of reducing power consumption

Active Publication Date: 2014-07-16
SEMICON MFG INT (SHANGHAI) CORP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem solved by the present invention is the high power consumption of the level shift circuit in the prior art

Method used

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Embodiment Construction

[0027] It can be seen from the background technology that the prior art uses a level shift circuit to convert the low-voltage control signal into a high-voltage control signal. High consumption.

[0028] In order to solve the above problems, the inventor of the present invention proposes a level shift circuit, please refer to figure 2 , the level shifting circuit includes: a first level shifting circuit 201 for outputting a first level signal V according to an input signal out1, the first input terminal INa1 of the first level shift circuit 201 is connected to the input signal, the second input terminal INb1 of the first level shift circuit 201 is connected to the inverted input signal, the first level shift The output end of the bit circuit 201 outputs the first level signal V out1 , the first level signal V out1 The level inversion speed is less than the level inversion speed of the input signal; the inverter INV is used to convert the first level signal V out1 Invertin...

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Abstract

Disclosed is a level shift circuit. The level shift circuit comprises a first level shift circuit, an inverter and a second level shift circuit. The first level shift circuit is used for outputting a first level signal according to an input signal; the first input end of the first level shift circuit is connected with the input signal; the second input end of the first level shift circuit is connected with an anti-phase incoming signal; the level overturn speed of the first level signal outputted by the first level shift circuit is smaller than the level overturn speed of the input signal; the inverter is used for inverting the first level signal; the second level shift circuit is used for outputting a second level signal according to the first level signal; the first input end of the second level shift circuit is connected with the first level signal; the second input end of the second level shift circuit is connected with the first level signal inverted by the inverter; and the level overturn speed of the second level signal outputted by the second level shift circuit is smaller than the level overturn speed of the first level signal. The level shift circuit provided by the invention has the advantage of low power dissipation.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a level shift circuit. Background technique [0002] The level shift circuit converts the low-voltage control signal into a high-voltage control signal, and realizes the control of the low-voltage logic on the high-voltage power output stage. ) and FLASH memory circuits have been widely used. In the field of control technology for high-voltage devices, the control circuit and high-voltage output drive circuit can be integrated to achieve high withstand voltage, high current, and high precision. A conventional level shift circuit converts a low-voltage control signal into a high-voltage control signal for driving an output-stage PMOS transistor operating under high voltage. As the key circuit connecting the control circuit and the output driver stage, the level shift circuit requires high driving capability to meet the driving requirements of the output stage; on the other han...

Claims

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Application Information

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IPC IPC(8): H03K19/0185
Inventor 權彛振杨家奇赵子鉴郁红
Owner SEMICON MFG INT (SHANGHAI) CORP
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