Driving protection circuit and electronic chip
A technology for driving and protecting circuits and high-voltage protection, which is applied in the field of circuits, and can solve problems such as component transistor damage, high voltage of electronic equipment, and affecting the service life of electronic equipment, so as to reduce adverse effects and improve the service life of circuits.
Pending Publication Date: 2022-05-06
GUANGDONG GREATER BAY AREA INST OF INTEGRATED CIRCUIT & SYST
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Problems solved by technology
[0002] During the use of electronic equipment, when the voltage is unstable, it will cause the internal circuit of the electronic equipment to have excessive voltage, excessive current or undervoltage, etc. These conditions are often easy to damage the components in the internal circuit of the electronic equipment. Devices such as transistors cause damage, which affects the service life of the circuit, which in turn affects the service life of electronic equipment
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[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0032] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have m...
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The invention discloses a driving protection circuit and an electronic chip. The circuit comprises a high-voltage protection and current limiting module, a high-side driving overcurrent and open circuit detection module, a low-voltage side driving current limiting module and an under-voltage protection module. According to the driving protection circuit, the high-voltage protection and current limiting module is used for performing overvoltage protection on the input voltage and limiting the input current, and the high-side driving overcurrent and open circuit detection module is used for performing overcurrent detection and open circuit detection on the current from the high-voltage protection and current limiting module. The low-voltage side driving current-limiting module is used for carrying out current limiting on the output of the low-voltage side of the high-voltage protection and current-limiting module, and the under-voltage protection module is used for providing under-voltage protection for the high-voltage protection and current-limiting module and the low-voltage side driving current-limiting module, so that the adverse effect caused by the unstable condition of the power supply voltage is reduced; damage to the circuit caused by conditions such as over-high voltage, over-high current and under-voltage is avoided, and the service life of the circuit is prolonged.
Description
technical field [0001] The present application relates to the field of circuit technology, in particular to a drive protection circuit and an electronic chip. Background technique [0002] During the use of electronic equipment, when the voltage is unstable, it will cause the internal circuit of the electronic equipment to have excessive voltage, excessive current or undervoltage, etc. These conditions are often easy to damage the components in the internal circuit of the electronic equipment. Devices such as transistors cause damage, which affects the service life of the circuit, which in turn affects the service life of electronic equipment. Therefore, how to design a driving protection circuit to reduce adverse effects caused by voltage instability is a technical problem to be solved urgently. Contents of the invention [0003] The purpose of this application is to provide a driving protection circuit and an electronic chip. In order to provide a basic understanding o...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02H7/20H02H9/02H02H9/04H02H3/10H02H3/20H02H3/24
CPCH02H7/20H02H7/205H02H9/025H02H9/045H02H3/10H02H3/207
Inventor 严文瑞王云郝炳贤张建华薛静张梦楼玥
Owner GUANGDONG GREATER BAY AREA INST OF INTEGRATED CIRCUIT & SYST