Title:
SURGE PROTECTION POWER SUPPLY CLAMPING CIRCUIT, CHIP AND COMMUNICATION TERMINAL
Document Type and Number:
WIPO Patent Application WO/2020/001600
Kind Code:
A1
Abstract:
Disclosed are a surge protection power supply clamping circuit, a chip and a communication terminal. The power supply clamping circuit comprises at least one driving unit and discharging unit; the discharging units are connected to the corresponding driving units respectively, and the driving units are connected to the same time delay unit respectively; the time delay units and the discharging units are connected to a power supply voltage and a ground line respectively. The driving units or the discharging units are sequentially controlled in the power supply voltage wiring direction, or the time delay units are sequentially controlled, so that the sum values of an equivalent conduction resistance and an equivalent metal wiring resistance of respective discharging units are the same, and therefore, the uneven conduction of an NMOS transistor caused by different metal wiring resistances due to different metal wiring lengths of the NMOS transistor of each discharging unit can be counteracted; and the conduction uniformity of each discharging unit is enhanced, so that the surge protection capability of the power supply clamping circuit is improved, and the reliability of the electronic product is improved.
More Like This:
| JPH07230733 | SEMICONDUCTOR ARRESTOR |
| JP2001286057 | SURGE ABSORBER CIRCUIT |
| WO/2010/037634 | ELECTRICAL DEVICE HAVING A SUPPORT FRAME |
Inventors:
LI YANWEI (CN)
LIN SHENG (CN)
LIN SHENG (CN)
Application Number:
PCT/CN2019/093621
Publication Date:
January 02, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
VANCHIP TIANJIN TECH CO LTD (CN)
International Classes:
H02H9/04; H02M1/32
Foreign References:
| CN108880212A | 2018-11-23 | |||
| CN202917963U | 2013-05-01 | |||
| CN106532671A | 2017-03-22 | |||
| CN103515944A | 2014-01-15 | |||
| US9058886B2 | 2015-06-16 |
Other References:
See also references of EP 3817208A4
Attorney, Agent or Firm:
BEIJING GENIUS ESSEN INTELLECTUAL PROPERTY OFFICE (CN)
Download PDF:
Previous Patent: SURGE PROTECTION DEVICE AND CHIP CONSTITUTED BY SAME, AND COMMUNICATION TERMINAL
Next Patent: CLEANING DEVICE ASSEMBLY
Next Patent: CLEANING DEVICE ASSEMBLY