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Circuit Arrangement and Method of Driving a Circuit Arrangement

  • US 20080265981A1
  • Filed: 11/01/2006
  • Published: 10/30/2008
  • Est. Priority Date: 11/08/2005
  • Status: Active Grant
First Claim
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1. A circuit assembly (1), comprisinga connection for an electrical power source (10) for supplying an electrical current to the circuit assembly,at least one first electrical device (12, 14) and at least one second electrical device (14, 16), connected in series therewith,at least one semiconductor switch (22, 24) for controlling said first electrical device (12, 14), and comprising at least a gate (g), a source (s) and a drain (d), and connected in parallel with said first electrical device (12, 14) by means of the drain (d) and the source (s),a control unit (30) arranged for supplying a first control signal to the semiconductor switch (22, 24) and a second control signal to said second electrical device (14, 16),wherein said second electrical device (14, 16) is present downstream of said first electrical device (12, 14) and said semiconductor switch (22, 24), in the direction of a current flow when the circuit arrangement is in use,wherein at least one electrical component (40, 42, 50, 52) is provided between the gate (g) and the source (d), across which electrical component a voltage difference develops when a current (I1, I2) is sent through the component, wherein furthermore the first control signal comprises a control current signal to the gate (g) and to the electrical component (40, 42, 50, 52),wherein the control unit (30) is arranged to adapt the second control signal in dependence on the first control signal.

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