公开(公告)号：US12062984B2

公开(公告)日：2024-08-13

申请号：US17863828

申请日：2022-07-13

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Ramorini ,  Giuseppe Calderoni

IPC: H02M3/158 ,  G09G3/3233 ,  H02M1/00

CPC classification number: H02M3/1582 ,  G09G3/3233 ,  H02M1/0009 ,  G09G2330/028

Abstract: A first node of converter circuit receives an input, provides an output at a second node, and has a third node coupled by an inductance to ground. A first switch has a current path between the first and third nodes and a second switch has a current path between the third and second nodes. The converter circuit operates in a first state (with the first switch conductive and the second switch non-conductive) and a second state (with the first switch non-conductive and the second switch conductive). Current flowing through the first switch is sensed during the first state to produce a sensing signal indicative of inductance current. The sensing signal is averaged to produce an averaged sensing signal indicative of an average value of the current. The averaged sensing signal is then weighted by a time during which the second switch is conductive to produce a weighted signal.