Switch Protection

Abstract

The present application relates to a method and a switch control arrangement for controlling a switch (107.1-107.4) of a bridge circuit, where the bridge circuit comprises a first and a second input terminal (102.1, 102.2) for connecting a power source (103), a first branch (104) connected between the first and the second input terminal (102.1, 102.2) and including a first section (108.1) between the first input terminal (102.1) and a centre tap (117.1) and including a second section (108.2) between the centre tap (117.1) and the second input terminal (102.2), where the first section (108.1) includes a first switch (107.1) and the second section (108.2) includes a second switch (107.2). The method comprises the steps of determining a measured value by measuring a current flowing in one of the two sections (108.1, 108.2) or measuring a voltage across one of the two sections (108.1, 108.2) of the first branch (104), carrying out a comparison of the measured value with a threshold and controlling a switching of the first and the second switch (107.1, 107.2) of the first branch (104) in dependency of a result of said comparison.

Dependencies are inferred from the claim text.