Title:
HIGH-SPEED LARGE-CURRENT PULSE CIRCUIT, AND OPERATION CIRCUIT AND OPERATION METHOD FOR PHASE CHANGE MEMORY
Document Type and Number:
WIPO Patent Application WO/2023/236304
Kind Code:
A1
Abstract:
Disclosed in the present invention are a high-speed large-current adjustable pulse circuit, and an operation circuit and operation method for a phase change memory. The high-speed large-current adjustable pulse circuit is provided with a clamping structure, a current mirror structure, and a leakage current turning-off structure, wherein the clamping structure comprises a clamping operational amplifier and a first MOS transistor, and is used for generating a reference current; the current mirror structure is used for generating an output current proportional to the reference current; and the leakage current turning-off structure is used for turning off the current mirror structure when a pulse disappears, so as to reduce a leakage current, such that the current can be adjusted and the leakage current is reduced. By means of respectively using two high-speed large-current adjustable pulse circuits as a first current source and a second current source to respectively apply adjusted currents to two electrodes of a phase change memory unit, the range of a working voltage of a pulse current can be increased to VSS-VDD, such that energy accumulation is quickly realized.
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Inventors:
WANG XINGSHENG (CN)
MA YINGHAO (CN)
YANG FAN (CN)
WANG CHENGXU (CN)
HUANG MENGHUA (CN)
MIAO XIANGSHUI (CN)
MA YINGHAO (CN)
YANG FAN (CN)
WANG CHENGXU (CN)
HUANG MENGHUA (CN)
MIAO XIANGSHUI (CN)
Application Number:
PCT/CN2022/104246
Publication Date:
December 14, 2023
Filing Date:
July 07, 2022
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
G11C13/00
Foreign References:
| CN101552603A | 2009-10-07 | |||
| CN102222891A | 2011-10-19 | |||
| CN102592671A | 2012-07-18 | |||
| CN102931974A | 2013-02-13 | |||
| CN113746454A | 2021-12-03 | |||
| US20160173066A1 | 2016-06-16 |
Other References:
ZHOU, HAIBING ET AL.: "A Novel Design for Continuous Adjustable Pulse Current Source", JINAN DAXUE XUEBAO - JOURNAL OF JINAN UNIVERSITY, GAI KAN BIANJIBU, GUANGZHOU, CN, vol. 30, no. 01, 31 January 2016 (2016-01-31), CN , pages 7 - 12, XP009551022, ISSN: 1671-3559
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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