Accidental fuse programming protection circuit
AssigneeSkyworks Solutions, Inc.
InventorsBo Zhou, Guillaume Alexandre Blin
Life of this patent
Estimating the term…
Abstract
Circuits, methods, and devices for protecting against accidental fuse programming are discussed herein. For example, a fuse circuit may include a first switch electrically connected to a first point, a fuse electrically connected in series with the first switch, a first biasing circuit to control the first switch to enable programming of the fuse in response to a fuse programming event, a second switch electrically connected in series with the fuse between the fuse and a second point, and a second biasing circuit to control the second switch to enable programming of the fuse in response to the fuse programming event.
Claims19
A fuse circuit comprising:
- a first switch electrically connected to a first point;
- a fuse electrically connected in series with the first switch;
- a fuse protection diode electrically connected in series with the first switch between the first point and the fuse;
- a first biasing circuit to control the first switch to enable programming of the fuse in response to a fuse programming event;
- a second switch electrically connected in series with the fuse between the fuse and a second point;
- and
- a second biasing circuit to control the second switch to enable programming of the fuse in response to the fuse programming event.
A packaged module comprising:
- a packaging substrate;
- and
- a fuse circuit implemented on the packaging substrate, the fuse circuit including a first switch, a fuse, a fuse protection diode, a first biasing circuit, a second switch, and a second biasing circuit, the first switch electrically connected to a first point, the fuse electrically connected in series with the first switch, the fuse protection diode electrically connected in series with the first switch between the first point and the fuse, the first biasing circuit configured to control the first switch to enable programming of the fuse based at least in part on a fuse programming event, the second switch electrically connected in series with the fuse between the fuse and a second point, the second biasing circuit configured to control the second switch to enable programming of the fuse based at least in part on the fuse programming event.
A radio-frequency device comprising:
- memory;
- a transceiver in communication with the memory, the transceiver to generate a radio-frequency signal;
- a front end system in communication with the transceiver, the front end system to amplify the radio-frequency signal;
- a power management system in communication with the transceiver, the power management system to provide power for operation of the radio-frequency device;
- a fuse circuit implemented on a least one of the memory, the transceiver, the front end system, or the power management system, the fuse circuit including a first switch, a fuse, a fuse protection diode, a first biasing circuit, a second switch, and a second biasing circuit, the first switch electrically connected to a first point, the fuse electrically connected in series with the first switch, the fuse protection diode electrically connected in series with the first switch between the first point and the fuse, the first biasing circuit to control the first switch to enable programming of the fuse based at least in part on a fuse programming event, the second switch electrically connected in series with the fuse between the fuse and a second point, the second biasing circuit to control the second switch to enable programming of the fuse based at least in part on the fuse programming event;
- and
- an antenna in communication with the front end system, the antenna to transmit the amplified radio-frequency signal.
Dependencies are inferred from the claim text.