US 11,444,452 B2 · Current limiting circuits

Abstract

A current limiting circuit for controlling current from a power supply to a load having a capacitance includes an inductor, a transistor coupled in a current path with the inductor, and a control circuit. The transistor includes a control terminal. The control circuit is coupled to sense a voltage across the inductor and coupled to the control terminal of the transistor. The control circuit is configured to turn off the transistor when the voltage across the inductor is greater than a threshold to restrict current from a power supply, and turn on the transistor when a defined parameter is met to allow current from the power supply to charge the load capacitance. Other example current limiting circuits are also disclosed.

Claims20

Dependent claims

A method for controlling current from a power supply to a load having a load capacitance, the method comprising:

sensing, via a control circuit, a voltage across an inductor coupled in a current path with a transistor, the transistor having a control terminal;
controlling, via one or more control switching devices of the control circuit, the transistor into an off state via the control terminal in response to the voltage across the inductor being greater than a threshold to restrict current from a power supply;
and
controlling, via the one or more control switching devices, the transistor into an on state via the control terminal in response to a defined parameter being met to allow current from the power supply to charge the load capacitance.

1 more element

Dependencies are inferred from the claim text.

Current limiting circuits

Life of this patent

Current limiting circuits

Life of this patent

Abstract

Claims20