Circuit for high voltage and related chip and electronic device

Abstract

The invention discloses a circuit for high voltage, a related chip and an electronic device. The circuit for high voltage comprises a voltage withstanding circuit which is operated between a first reference voltage and a grounding voltage and comprises a P-type transistor and an N-type transistor, and the gate-source working driving voltage of the voltage withstanding circuit is smaller than the first reference voltage; the control signal level shift circuit is used for generating a level-shifted P-type transistor control signal according to the P-type transistor control signal and generating a level-shifted N-type transistor control signal according to the N-type transistor control signal, the level-shifted P-type transistor control signal is coupled to the grid electrode of the P-type transistor, and the level-shifted N-type transistor control signal is coupled to the grid electrode of the N-type transistor. The level-shifted N-type transistor control signal is coupled to the gate of the N-type transistor. According to the circuit for high voltage, the related chip and the electronic device provided by the invention, the circuit can be normally operated at relatively high reference voltage, and the cost of redesigning and adopting a high-voltage device is saved.

Description

Technical field [0001] Embodiments of the present application relate to the field of electronic circuit technology, in particular to a circuit for high voltage and related chips and electronic devices. Background [0002] In portable consumer electronics, the power supply usually comes from lithium batteries / dry batteries, where lithium batteries gradually become the mainstream power supply, but their voltage output range may be higher than the withstand voltage range of the electronic devices in the chip. The general practice is to switch to high-voltage devices to withstand high voltage output ranges, but the use of high-voltage devices may require higher layers of mask plates and often require more chip area, which means higher manufacturing costs. Contents of the Invention [0003] One of the objectives of this application is to provide a circuit for high voltage and related chips and electronic devices to solve the above problems. [0004] First, one embodiment of the pres...

AI Technical Summary

Problems solved by technology

The general practice is to use high-voltage devices to withstand the high-voltage output range. However, the use of high-voltage devices may require higher layers of masks and often require more chip area, which means higher manufacturing costs.

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