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US 9,065,435 B1Granted
Reduced pin full feature load switch
AssigneeSilego Technology, Inc.
InventorsJohn Othniel McDonald, Jie Chen, Chen-Yu Wang
Life of this patent
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Abstract
A four pin integrated circuit MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) load switch is disclosed that provides full features including adjustable ramp time/rate, adjustable discharge time/rate, temperature control, over-current control, and short circuit protection. In some embodiments, the adjustable ramp is based on the voltage or current input into the integrated circuit.
Claims30
An integrated circuit, comprising:
- a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) configured as a switch;
- and
- circuitry for providing an adjustable ramp rate for MOSFET turn-on, wherein a value of the ramp rate depends on a voltage level on an input pin of the integrated circuit;
- wherein the integrated circuit comprises only four pins including the input pin, a drain pin, a source pin, and a ground pin.
1 more element
A method, comprising:
- configuring a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) as a switch;
- and
- configuring circuitry for providing an adjustable ramp rate for MOSFET turn-on;
- wherein the MOSFET and the circuitry form a four pin integrated circuit comprising an input pin, a drain pin, a source pin, and a ground pin and wherein a value of the ramp rate depends on a voltage level on the input pin of the integrated circuit.
1 more element
Dependencies are inferred from the claim text.