Title:
LOW-POWER-CONSUMPTION HIGH-SPEED ZERO-CURRENT SWITCH
Document Type and Number:
WIPO Patent Application WO/2018/214963
Kind Code:
A1
Abstract:
Disclosed is a low-power-consumption high-speed zero-current switch, comprising a delay controller, a driving stage and a power transistor MN. An input end of the delay controller is connected to an external clock (CLK) and an output end thereof is connected to an input end of the driving stage, and an output end of the driving stage is connected to a gate electrode of the power transistor MN. The delay controller comprises a gate signal generator, a sampling circuit and a current controller, these forming a negative feedback loop, such that the source-drain voltage VON and VD a zero-current sampling switch at a moment when same is switched on and a moment when same is switched off are finally stabilized at 0, thereby realizing the source-drain voltage of the power transistor MN being 0 when same is switched on and switched off. Instead of using a high-power-consumption high-speed comparator, the present invention uses a low-power-consumption delay controller so as to generate a switching-on and a switching-off signal for a power transistor. In addition, by using a low-power-consumption negative feedback circuit to control the delay thereof, the zero-current characteristic of the power transistor when same is switched on and switched off is ensured.
Inventors:
GENG LI (CN)
XUE ZHONGMING (CN)
ZHANG LINA (CN)
GOU WEI (CN)
ZHANG RUI (CN)
ZHANG RUIQIANG (CN)
XUE ZHONGMING (CN)
ZHANG LINA (CN)
GOU WEI (CN)
ZHANG RUI (CN)
ZHANG RUIQIANG (CN)
Application Number:
PCT/CN2018/088421
Publication Date:
November 29, 2018
Filing Date:
May 25, 2018
Export Citation:
Assignee:
UNIV XI AN JIAOTONG (CN)
International Classes:
H03K17/042
Foreign References:
| CN107124166A | 2017-09-01 | |||
| CN103475198A | 2013-12-25 | |||
| CN105763051A | 2016-07-13 | |||
| CN101841230A | 2010-09-22 | |||
| CN102624228A | 2012-08-01 | |||
| CN102076138A | 2011-05-25 | |||
| CN104054264A | 2014-09-17 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
Download PDF: