Follow-hold switch circuit

US11942963B2 · kind B2 · utility

Assignees

• NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION · CN
• Chongqing GigaChip Technology Co., Ltd. · CN

Inventors

• Daiguo Xu · Chongqing, CN
• Dongbing Fu · Chongqing, CN
• Zhengping Zhang · Chongqing, CN
• Zhou Yu · Beijing, CN
• Jian'an Wang · Chongqing, CN
• Can ZHU · Chongqing, CN
• Ruzhang Li · Chongqing, CN
• Guangbing Chen · Tangxia, CN
• Yuxin Wang · Tangxia, CN
• Xueliang Xu · Chongqing, CN

Key dates

• Filing date: Jan 19, 2021
• Grant date: Mar 26, 2024
• Expiry date: Jan 19, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B70/10
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A follow-hold switch circuit comprising: a follower; a sampling sub-circuit for voltage sampling; a bootstrap-control sub-circuit, which provides a bootstrap voltage to the sampling sub-circuit when the circuit is in a following state; a sampling-switch-control sub-circuit, which provides a common-mode voltage to a bootstrap capacitor in the bootstrap-control sub-circuit when the circuit is in a holding state; the follower is connected to an output of the sampling sub-circuit; the sampling sub-circuit is connected to the bootstrap-control sub-circuit and the sampling-switch-control sub-circuit respectively through a sampling switch; the present disclosure can effectively improve the linearity of sampling switches.