Circuit configured to adjust the activation state of transistors based on load conditions
First Claim
Patent Images
1. A circuit arrangement, comprising:
- a transistor arrangement comprising a plurality of n transistors, each comprising a gate terminal, and a load path between a source and a drain terminal, and m of the n transistors comprising;
a drift region in the load path between a body region and the drain terminal; and
a control terminal; and
a field electrode arranged in a trench adjacent to and dielectrically insulated from the drift region;
ora drift control region arranged within a semiconductor body adjacent to and dielectrically insulated from the drift region, andwherein the gate terminal of the m transistors is coupled to a gate electrode that is dielectrically insulated from the body region and is configured to control an on/off state of the m transistors by controlling a conducting channel in the body region between the source region and the drift region, and wherein the load paths of the plurality of n transistors are connected in parallel forming a load path of the transistor arrangement, where n is an integer number≧
2 and m is an integer number≦
n and m≧
1;
wherein the control terminal of each m transistors is coupled to either the field electrode or the drift control region and is configured to receive a control signal that adjusts an activation state of the m transistors independent from the on/off state, anda drive circuit configured to independently adjust the activation state of the m transistors to one of a first activation state and a second activation state, to determine a load condition of the transistor arrangement, and to select k transistors that are driven to assume the first activation state and m−
k of the m transistors that are driven to assume the second activation state dependent on the load condition, where k is an integer number≦
m an k≧
0.
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Accused Products
Abstract
Disclosed is a circuit arrangement, including a transistor component with a gate terminal, a control terminal, and a load path between a source and a drain terminal, and a drive circuit connected to the control terminal and configured to determine a load condition of the transistor component, to provide a drive potential to the control terminal, and to adjust the drive potential dependent on the load condition.
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Citations
22 Claims
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1. A circuit arrangement, comprising:
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a transistor arrangement comprising a plurality of n transistors, each comprising a gate terminal, and a load path between a source and a drain terminal, and m of the n transistors comprising; a drift region in the load path between a body region and the drain terminal; and a control terminal; and a field electrode arranged in a trench adjacent to and dielectrically insulated from the drift region;
ora drift control region arranged within a semiconductor body adjacent to and dielectrically insulated from the drift region, and wherein the gate terminal of the m transistors is coupled to a gate electrode that is dielectrically insulated from the body region and is configured to control an on/off state of the m transistors by controlling a conducting channel in the body region between the source region and the drift region, and wherein the load paths of the plurality of n transistors are connected in parallel forming a load path of the transistor arrangement, where n is an integer number≧
2 and m is an integer number≦
n and m≧
1;wherein the control terminal of each m transistors is coupled to either the field electrode or the drift control region and is configured to receive a control signal that adjusts an activation state of the m transistors independent from the on/off state, and a drive circuit configured to independently adjust the activation state of the m transistors to one of a first activation state and a second activation state, to determine a load condition of the transistor arrangement, and to select k transistors that are driven to assume the first activation state and m−
k of the m transistors that are driven to assume the second activation state dependent on the load condition, where k is an integer number≦
m an k≧
0. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A circuit arrangement, comprising:
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a transistor arrangement comprising a plurality of n transistors, each comprising a gate terminal, and a load path between a source and a drain terminal, and m of the n transistors comprising; a drift region in the load path between a body region and the drain terminal; and a control terminal; and a field electrode arranged in a trench adjacent to and dielectrically insulated from the drift region;
ora drift control region arranged within a semiconductor body adjacent to and dielectrically insulated from the drift region; and wherein the gate terminal of the m transistors is coupled to a gate electrode that is dielectrically insulated from the body region and is configured to control an on/off state of the m transistors, and wherein the load paths of the plurality of n transistors are connected in parallel forming a load path of the transistor arrangement, where n is an integer number≧
2 and m is an integer number≦
n and m≧
1, wherein the control terminal of each m transistors is coupled to either the field electrode or the drift control region and is configured to receive a control signal that adjusts an activation state of the m transistors independent from the on/off state of the m transistors,a drive circuit configured to independently adjust the activation state of the m transistors to one of a first activation state and a second activation state, to determine a load condition of the transistor arrangement, and to select k transistors that are driven to assume the first activation state and mk of the m transistors that are driven to assume the second activation state dependent on the load condition, where k is an integer number≦
m and k≧
0.
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Specification