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US 2022/0045496 A1Published application
Programmable voltage lockout protection, and related systems, methods and devices
AssigneeMicrochip Technology Incorporated
InventorDaniel Harfert
Life of this patent
Estimating the term…
Abstract
One or more examples relate, generally, to a programmable voltage lockout circuit provided at an electronic device. Such a programmable voltage lockout circuit asserts a lockout of the electronic device at least partially responsive to a user-programmed threshold and a supply voltage of the electronic device. One or more examples relate, generally, to configuring a programmable voltage lockout circuit utilizing a user-programmed threshold.
Claims20
An apparatus, comprising:
- a programmable voltage lockout circuit provided at an electronic device to assert a lockout of the electronic device at least partially responsive to a user-programmed threshold and a supply voltage of the electronic device.
A method, comprising:
- observing a state of a supply voltage of an electronic device at least partially responsive to a user-programmed threshold;
- and
- asserting a lockout of the electronic device at least partially responsive to the state of the supply voltage.
An electronic system, comprising:
- a first electronic device and a second electronic device, wherein respective internal circuits of the first electronic device and the second electronic device are configured to operate according to different ones of ranges of operating voltages;
- and
- a programmable voltage lockout circuit provided at the second electronic device to assert a lockout of the second electronic device at least partially responsive to observing an indication that a supply voltage of a common voltage supply is outside a range of operating voltages of the respective internal circuits of the first electronic device.
A method comprising:
- receiving a user specification for a value of a threshold stored at a register of a voltage lockout circuit of an electronic device;
- configuring a first input of a comparator to be responsive to the threshold;
- configuring a second input of the comparator to be responsive to a level of a supply voltage received at a supply voltage pin of the electronic device;
- and
- configuring an output of the lockout circuit to be responsive to an indication generated by the comparator.
2 more elements
Dependencies are inferred from the claim text.