Reset pulse width adjustable timer circuit and driver
By designing a timer circuit with adjustable reset pulse width and utilizing voltage comparison between the status indicator module and the comparator module, the problems of erroneous shutdown and missed detection after the accumulation of timing cycles in traditional timer circuits are solved, achieving higher timing accuracy and driver reliability.
CN115225081BActive Publication Date: 2026-01-20XIAN MICROELECTRONICS TECH INST
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Patent Information
- Application Number
- CN202210885809.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-26
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2042-07-26
AI Technical Summary
Technical Problem
The use of a fixed pulse width reset signal in traditional timer circuits can lead to problems such as false shutdown and missed detection of abnormal situations after the timing cycle accumulates.
Method used
A timer circuit with adjustable reset pulse width was designed. Through a status indicator module, a charge/discharge module, and a comparator module, the voltage comparison result of the adjustable resistor and the comparator module is used to determine the reset signal pulse width, thereby realizing flexible adjustment of the reset signal pulse width.
Benefits of technology
The accuracy of timer timing and reset has been improved, avoiding accidental shutdown and missed detection, thus enhancing the reliability and stability of the driver.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a reset pulse width adjustable Timer circuit and a driver, and realizes an effective method for adjusting the reset pulse width based on a CMOS process technology.The reset pulse width adjustable Timer circuit comprises a state indication module, a current source module, a charge and discharge module and a comparator module for realizing the adjustable pulse width.The source voltage comparison circuit can effectively determine the end time of the reset signal pulse by the comparison result of the comparison voltage and the threshold value of the Timer, so that the pulse width of the reset signal is adjustable, the precision of the Timer timing and resetting is greatly improved, the problem that the Timer may be abnormally stopped and the abnormal situation may be missed due to the fixed pulse width of the reset signal of the traditional Timer structure after the timing period is accumulated is solved, and the reliability and stability of the synchronous rectification driver in the isolated DC / DC power supply are improved.
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