Title:
CIRCUIT STRUCTURE FOR IMPLEMENTING CURRENT CHANGE CONTROL FUNCTION
Document Type and Number:
WIPO Patent Application WO/2023/060997
Kind Code:
A1
Abstract:
A circuit structure for implementing a current change control function. The circuit structure comprises a drive circuit module, an input end of which receives an input signal; a delay clamping circuit module, which is connected to the drive circuit module and receives the input signal; and a power module, wherein an input end of the power module is connected to an output end of the drive circuit module and receives an output signal of the drive circuit module, and the input end of the power module is also connected to an output end of the delay clamping circuit module. By means of the circuit structure for implementing a current change control function, clamping is acted in a power tube starting stage by using a delay structure, such that a peak current when a power tube is turned on is limited, and the magnitude and change rate of a reverse recovery current are also limited, thereby having the function of protecting a power device; and after a clamping stage is terminated, the gate voltage of the power tube is increased to a normal value, such that a sufficient turning-on capability of the power tube is maintained.
Inventors:
LIU WEIZHONG (CN)
JIANG YAPING (CN)
ZHANG MINGFENG (CN)
JIANG YAPING (CN)
ZHANG MINGFENG (CN)
Application Number:
PCT/CN2022/108951
Publication Date:
April 20, 2023
Filing Date:
July 29, 2022
Export Citation:
Assignee:
CRM ICBG WUXI CO LTD (CN)
International Classes:
H03K17/567; H03K17/081; H03K17/687
Foreign References:
| CN107465334A | 2017-12-12 | |||
| US20060103428A1 | 2006-05-18 | |||
| CN103312133A | 2013-09-18 | |||
| CN106452404A | 2017-02-22 | |||
| JP2017224999A | 2017-12-21 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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