Title:
INTERFACE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/177092
Kind Code:
A1
Abstract:
The present application provides an interface circuit, comprising an amplifier, a first switch, a second switch, and a third switch, wherein an input end of the amplifier is coupled to an input node of the interface circuit, an output end of the amplifier is coupled to a control end of the second switch, the output end of the amplifier is further coupled to the ground by means of the third switch, the first switch and the second switch are connected in series between a power supply voltage and the ground, and an output node of the interface circuit is provided between the first switch and the second switch. According to the interface circuit provided by the present application, the output node is coupled to one end of an interface load, and the other end of the interface load is coupled to the power supply voltage. When an input signal of the interface circuit is on a rising edge, the first switch and the third switch are turned off at the front half of the rising edge and are turned on at the rear half of the rising edge, such that the amplifier of the interface circuit does not participate in a signal amplification process at the rear half of the rising edge of the input signal, thereby eliminating an overshooting phenomenon and improving the reliability and service life of the interface circuit.
Inventors:
ZHANG JINHAI (CN)
Application Number:
PCT/CN2019/077113
Publication Date:
September 10, 2020
Filing Date:
March 06, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G05F1/56
Foreign References:
| TW200641577A | 2006-12-01 | |||
| CN103076831B | 2015-12-02 | |||
| CN105700605A | 2016-06-22 |
Attorney, Agent or Firm:
CHINABLE IP (CN)
Download PDF:
Previous Patent: NOVEL MOBILE POWER SUPPLY
Next Patent: MAGNETIC REFRIGERATION MODULE AND PREPARATION METHOD THEREFOR
Next Patent: MAGNETIC REFRIGERATION MODULE AND PREPARATION METHOD THEREFOR