US 11,694,756 B2 · Power circuit, electronic fuse circuit, and method for providing power to electronic fuse circuit

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.

Claims17

Dependent claims

A power circuit, adapted for providing a programming voltage to an electronic fuse circuit, the power circuit comprising:

a pass transistor of a P-type metal-oxide-semiconductor comprising a bulk electrode, a gate electrode, a source electrode receiving a system high voltage, and a drain electrode connected to a bit line;
a bulk voltage control circuit independently providing a bulk voltage to the bulk electrode;
and
a buffer circuit connected to the gate electrode of the pass transistor,
wherein a last-stage buffer of the buffer circuit is activated by the bulk voltage to control the pass transistor, wherein the bulk voltage control circuit comprises:
a first P-type metal-oxide-semiconductor transistor comprising a first source electrode connected to an operation voltage, a first drain electrode connected to an output node, and a first gate electrode;
and
a second P-type metal-oxide-semiconductor transistor comprising a second source electrode connected to the system high voltage, a second drain electrode connected to the output node for providing the bulk voltage, and a second gate electrode.

5 more elements

A method for providing power to an electronic fuse circuit, the method comprising:

providing a pass transistor of a P-type metal-oxide-semiconductor comprising a bulk electrode, a gate electrode, a source electrode receiving a system high voltage, and a drain electrode connected to a bit line;
providing a buffer circuit to provide a control voltage to the gate electrode of the pass transistor, turning on the pass transistor during a programming operation and turning off the pass transistor during a reading operation;
and
providing a bulk voltage control circuit independently providing a bulk voltage to the bulk electrode,
wherein a last-stage buffer of the buffer circuit is activated by the bulk voltage to control the pass transistor during the reading operation of the electronic fuse circuit, and
wherein the bulk voltage control circuit as provided comprises:
a first P-type metal-oxide-semiconductor transistor comprising a first source electrode connected to the operation voltage, a first drain electrode connected to an output node, and a first gate electrode;
and
a second P-type metal-oxide-semiconductor transistor comprising a second source electrode connected to the system high voltage, a second drain electrode connected to the output node for providing the bulk voltage, and a second gate electrode.

6 more elements

Dependencies are inferred from the claim text.

Power circuit, electronic fuse circuit, and method for providing power to electronic fuse circuit

Life of this patent

Power circuit, electronic fuse circuit, and method for providing power to electronic fuse circuit

Life of this patent

Abstract

Claims17