Patent ID: 8411471
Filing Date: 2013-04-02
Classification: H01L,H02M

Abstract:
1. An electronic circuit comprising: a first load terminal; a second load terminal; a supply terminal configured for having a charge storage arrangement connected thereto; a load transistor having first and second transistor terminals, a control terminal, and a load path between said first and second transistor terminals, the load path being coupled between the first load terminal and the second load terminal so that the first and second transistor terminals are in series with the first and second load terminals; a current sense circuit configured to provide a current sense signal and comprising a sense transistor and an activation input, the sense transistor having a control terminal and a load path, wherein the control terminal of the sense transistor is coupled to the control terminal of the load transistor so that the control terminal of the sense transistor and the control terminal of the load transistor are both driven by a drive signal; a start-up circuit comprising a start-up transistor and a deactivation input, the start-up transistor having a control terminal and a load path, the load path being coupled between the first load terminal and the supply terminal, wherein the start-up transistor and the sense transistor have their load paths connected in parallel; a drive circuit comprising a supply input coupled with the supply terminal, and a drive output coupled to control terminal of the load transistor and providing said drive signal; and a control circuit comprising an input terminal coupled with the supply terminal and being configured to deactivate the start-up circuit via the deactivation input dependent on a supply voltage at the supply terminal and to activate the current sense circuit via the activation input at least dependent on the supply voltage at the supply terminal.