Current limitation in an inductance with adaptation of the current limit

摘要

The circuit has a comparator (30) for comparing current (IL) in an inductor with respect to a threshold (I0 max). A retarder unit (31) provides a delay when the current attains the threshold, where the delay is proportional to inverse of a supply voltage (Vin) of the inductor. An on-off switch interrupts energy storage in the inductor when the delay is provided by the retarder unit. Independent claims are also included for the following: (A) a method for limiting current in an inductor (B) a control circuit for a voltage converter comprises a limitation circuit.