公开(公告)号：US09867240B2

公开(公告)日：2018-01-09

申请号：US15181730

申请日：2016-06-14

Applicant: NXP B.V.

Inventor： Leendert van den Broeke ,  Tobias Doom

IPC: H05B37/02 ,  H05B33/08 ,  H02M1/08 ,  H02M1/14 ,  H02M1/42 ,  H02M7/04 ,  H02M1/00

CPC classification number: H05B33/0815 ,  H02M1/08 ,  H02M1/14 ,  H02M1/42 ,  H02M7/04 ,  H02M2001/0009 ,  H05B33/0848 ,  H05B33/0851

Abstract: A filter circuit comprising a first feedback circuit configured to: receive a sensed-voltage-level-signal representative of a sensed voltage across a current sensing element; receive a voltage-set-point-signal; and set a regulation-control-signal for a current regulation device such that the sensed-voltage-level-signal tends towards the voltage-set-point-signal. The filter circuit also comprises a second feedback circuit configured to: receive a predetermined-threshold-signal; and receive a regulation-control-voltage-signal, representative of a voltage level of the regulation-control-signal. The second feedback circuit is configured to adjust the voltage-set-point-signal in accordance with a comparison between the regulation-control-voltage-signal and the predetermined-threshold-signal.