Integrated magnetic field sensor-controlled switch devices

摘要

Embodiments relate to integrated magnetic field sensor-controlled switch devices, such as transistors, current sources, and power switches, among others. In an embodiment, a magnetic switch and a load switch are integrated in a single integrated circuit device. In embodiments, the device can also include integrated load protection and load diagnostics. Embodiments can provide load switching and optional simultaneous logic signaling, for example to update a microcontroller or electronic control unit (ECU), while reducing space and complexity and thereby cost.

主权项

1. A magnetic field sensor-controlled device comprising: magnetic switch circuitry; load switch circuitry coupled to the magnetic switch circuitry; and an integrated circuit package comprising a current input and a current output, a current flow from the current input to the current output controlled by the load switch circuitry, wherein the current output is configured to be coupled to an external load to be switched, and the magnetic switch circuitry and the load switch circuitry are disposed in the integrated circuit package, and wherein the magnetic field sensor-controlled device further comprises a leadframe disposed in the package, wherein the magnetic switch circuitry is arranged on a first to side of the leadframe configured to face a magnetic field source and the load switch circuitry is arranged on a second, bottom side of the leadframe configured to face a circuit board or other mounting surface to which the leadframe is configured to attach opposing the first side.