Integrated Hall-Controlled Switch Devices
First Claim
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1. A Hall-controlled device comprising:
- an integrated circuit package;
Hall switch circuitry disposed in the integrated circuit package;
load switch circuitry coupled to the Hall switch circuitry and disposed in the integrated circuit package; and
a leadframe disposed in the integrated circuit package, wherein the Hall switch circuitry is arranged on a first, top 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.
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Abstract
Embodiments relate to Hall-controlled switch devices. In an embodiment, a Hall switch and a load switch are integrated in a single integrated circuit device. 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.
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Citations
19 Claims
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1. A Hall-controlled device comprising:
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an integrated circuit package; Hall switch circuitry disposed in the integrated circuit package; load switch circuitry coupled to the Hall switch circuitry and disposed in the integrated circuit package; and a leadframe disposed in the integrated circuit package, wherein the Hall switch circuitry is arranged on a first, top 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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sensing a magnetic field by a Hall-effect sensor arranged on a first, top side of a leadframe disposed in a package, wherein the first, top side of the leadframe is configured to face a magnetic field source; sending a signal related to the magnetic field by the Hall-effect sensor to a load switch arranged on a second, bottom side of the leadframe disposed in the package, wherein the second, bottom side of the leadframe is configured to face a circuit board or other mounting surface to which the leadframe is configured to attach opposing the first side; and selectively switching a load by the load switch according to the signal from the Hall-effect sensor using the load switch. - View Dependent Claims (13, 14)
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15. An integrated circuit comprising:
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Hall-effect switching circuitry comprising a Hall-effect element; load switching circuitry coupled to the Hall-effect switching circuitry; an integrated circuit package housing the Hall-effect switching circuitry and the load switching circuitry; and a leadframe disposed in the integrated circuit package, wherein the Hall-effect switching circuitry is arranged on a first, top side of the leadframe configured to face a magnetic field source and the load switching 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. - View Dependent Claims (16, 17)
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18. A Hall-controlled device comprising:
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an integrated circuit package; Hall switch circuitry arranged in the integrated circuit package; load switch circuitry arranged in the integrated circuit package and coupled to the Hall switch circuitry; a back bias magnetic material coupled to the integrated circuit package; and a leadframe disposed in the integrated circuit package, wherein the Hall switch circuitry is arranged on a first, top 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. - View Dependent Claims (19)
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Specification