Level switching circuit used for generating negative voltage

Abstract

A level switching circuit used for generating a negative voltage belongs to the technical field of electronic circuit. The level switching circuit comprises a level switching unit, a first sequentialcontrol unit, a second sequential control unit, a phase reversing unit and an output unit; wherein an input signal is connected to an input end of the first sequential control unit, and is also connected to an input end of the second sequential control unit after a phase reversing operation of the phase reversing unit; output signals of the first and second sequential control units control the level switching unit and the output unit, so as to achieve the purpose of switching the input signal into a negative level; in addition, the output unit can have two structures, i.e., a single-end outputunit and a double-end output unit. The level switching circuit of the invention has the beneficial effects that: the level switching circuit is capable of achieving high-speed negative voltage levelswitching without reducing reliability; in addition, the two sequential control units are coupled to the level switching unit, thus weak driving capability and reliability are improved, high switchingrate is achieved, and stable level switching output can be ensured at the same time.

Description

Technical field [0001] The invention belongs to the technical field of electronic circuits, and relates to a level conversion circuit for generating negative voltage, and in particular to a negative voltage level conversion circuit suitable for high-speed operation. Background technique [0002] The level conversion circuit usually converts the low-voltage control signal into the high-voltage control signal to realize the control of the high-voltage power output pole by the low-voltage logic. Generally, according to the polarity of the output high voltage control signal, the level conversion circuit can be divided into a negative voltage level conversion circuit and a positive voltage level conversion circuit. A typical level conversion circuit receives an input signal through a pair of transistors. However, when the input signal level drops significantly, the driving ability of the drive tube will deteriorate and the delay of the circuit will increase. In addition, the extreme ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of poor driving ability, low reliability and slow switching speed in the above-mentioned traditional level shifting circuit, the present invention provides a level shifting circuit for generating negative voltage, which can be realized without degrading reliability Negative level translation for high-speed operation

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