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Withstand voltage protection bias circuit and chip power supply circuit

A bias circuit and withstand voltage technology, applied in the electronic field, can solve problems such as chip damage, chip failure, damage, etc.

Pending Publication Date: 2022-07-29
HUNAN GOKE MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the maximum withstand voltage value of commonly used chips is 1.98V, that is, the normal working voltage of the circuit using the chip cannot exceed 1.8V, otherwise the chip will be damaged
However, in special working environments (such as discrete circuits), there may be situations where the voltage signal interacting with the chip is higher than 1.8V, resulting in the chip not working properly or being damaged

Method used

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  • Withstand voltage protection bias circuit and chip power supply circuit
  • Withstand voltage protection bias circuit and chip power supply circuit

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Embodiment Construction

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the protection scope of the present application.

[0056] The core of this application is to provide a voltage withstand protection bias circuit and a chip power supply circuit.

[0057] In order to make those skilled in the art better understand the solution of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] figure 1 A structural diagram of a voltage-resistant protection bias...

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Abstract

The invention relates to the technical field of electronics, and discloses a withstand voltage protection bias circuit and a chip power supply circuit, which comprise a detection unit, a conversion unit, a first suppression circuit and a second suppression circuit, the detection unit is used for detecting whether the first power supply and the second power supply are conducted. The conversion unit obtains the detection signal and outputs a conversion signal according to the detection signal, the first output voltage and the second output voltage so as to output a proper conversion signal according to the power supply signal value and the conduction condition fed back by the subsequent circuit and provide a control signal for the subsequent circuit. The first suppression circuit detects the signal, and the second output voltage adjusts the first output voltage; the second suppression circuit adjusts the second output voltage according to the detection signal and the first output voltage. The circuit provided by the invention adjusts the output of the first suppression circuit and the second suppression circuit according to the power supply detection signal and the feedback signal, thereby adjusting the input voltage of 3.3 V into the first output voltage and the second output voltage which are not higher than 1.8 V, and guaranteeing the normal work of a chip.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular, to a voltage-resistant protection bias circuit and a chip power supply circuit. Background technique [0002] At present, the maximum withstand voltage of commonly used chips is 1.98V, that is, the normal working voltage of the circuit using the chip cannot exceed 1.8V, otherwise the chip will be damaged. However, in a special working environment (such as in a discrete circuit), there may be a situation where the voltage signal interacting with the chip is higher than 1.8V, causing the chip to fail to work normally or be damaged. [0003] It can be seen that how to provide a protection circuit that can enable a chip with a maximum withstand voltage value of 1.98V to work in a voltage domain of 3.3V to ensure that the chip can work normally is an urgent problem to be solved by those skilled in the art. SUMMARY OF THE INVENTION [0004] The purpose of this applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/04H02M1/36H02M1/08
CPCH02M3/04H02M1/36H02M1/08
Inventor 王龙康希陈婷李洁颖
Owner HUNAN GOKE MICROELECTRONICS