公开(公告)号：US20230260585A1

公开(公告)日：2023-08-17

申请号：US18306221

申请日：2023-04-24

Applicant: United Microelectronics Corp.

Inventor： Chia Wei Ho ,  Min Chia Wang ,  Chung Ming Lin ,  Jin Pany Chi

IPC: G11C17/18 ,  G11C17/16 ,  H03K17/687

CPC classification number: G11C17/18 ,  G11C17/16 ,  H03K17/6871

Abstract: A power circuit is adapted for providing a programming voltage to an electronic fuse circuit, and includes a pass transistor of a P-type metal-oxide-semiconductor transistor, a buffer circuit, and a bulk voltage control circuit. The pass transistor includes a bulk electrode, a gate electrode, a first source/drain electrode receiving a system high voltage, and a second source/drain electrode connected to a bit line. The buffer circuit provides a control voltage to the gate electrode of the pass transistor. The pass transistor is turned on during a programming operation and turned off during a reading operation. The bulk voltage control circuit independently provides a bulk voltage to the bulk electrode. A last-stage buffer of the buffer circuit is also activated by the bulk voltage to control the pass transistor during the reading operation of the electronic fuse circuit. A method for providing power to an electronic fuse circuit is also provided.