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Title:
CIRCUIT WITH ELECTROSTATIC PROTECTION FUNCTION, HIGH-VOLTAGE INTEGRATED CIRCUIT, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2019/148910
Kind Code:
A1
Abstract:
A circuit with an electrostatic protection function, a high-voltage integrated circuit, and an air conditioner. The circuit with the electrostatic protection function comprises a voltage detection circuit (10), a main bleeder circuit (20), and a circuit to be protected (30). The voltage detection circuit (10) is used for detecting an electrostatic voltage between a power supply line (VDD) and a grounding line (VSS). The main bleeder circuit (20) is configured to provide a main bleeding channel for a static current. The circuit to be protected (30) comprises a main circuit unit to be protected (31) and an auxiliary protection circuit (32). The auxiliary protection circuit (32) can carry out secondary bleed-off on electrostatic energy which is not completely bled off from the main bleeder circuit (20), and simultaneously can bleed off the electrostatic energy entered from a signal input end of the main circuit unit to be protected (31) so as to prevent static electricity from entering the main circuit unit to be protected (31) by means of a port other than the power supply line (VDD) and the grounding line (VSS). Moreover, electrostatic protection is implemented on the main circuit unit to be protected (31) simultaneously from the power supply line and a signal line, and the electrostatic protection capability of the entire circuit is increased.

Inventors:
LIU, Dongzi (Lingang Road, Beijiao Shund, Foshan Guangdong 1, 528311, CN)
FENG, Yuxiang (Lingang Road, Beijiao Shund, Foshan Guangdong 1, 528311, CN)
Application Number:
CN2018/112743
Publication Date:
August 08, 2019
Filing Date:
October 30, 2018
Export Citation:
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Assignee:
GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD. (Lingang Road, Beijiao Shund, Foshan Guangdong 1, 528311, CN)
MIDEA GROUP CO., LTD. (B26-28F, Midea Headquarter BuildingNo. 6 Midea Avenue, Beijiao, Shund, Foshan Guangdong 1, 528311, CN)
International Classes:
H02H9/04
Foreign References:
CN108306273A2018-07-20
CN101562187A2009-10-21
CN101626154A2010-01-13
CN101707368A2010-05-12
TW201532386A2015-08-16
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (Floor 2, Aotex Power BuildingNorth Zone, High-Tech Industrial Park,No. 3, Songping Mountain Road, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
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