Circuit arrangement comprising an electronic component and an ESD protection arrangement
First Claim
1. A circuit arrangement comprising:
- an electronic component having first and second terminals; and
an ESD protection arrangement against disturbance pulses, which is coupled via connection terminals in parallel with the electronic component between the first and second terminals, the ESD protection arrangement comprising;
a first ESD protection unit; and
a second ESD protection unit, coupled in parallel with the first ESD protection unit, wherein the second ESD protection unit reacts more rapidly than the first ESD protection unit to a voltage rise at the connection terminals with a formation of a conductive current path between the connection terminals, whereinthe second ESD protection unit comprises a MOS transistor having load path terminals coupled between the first and second terminals and having a control terminal, the control terminal of the MOS transistor being short-circuited with one of the load path terminals or being coupled to one of the load path terminals via a resistor, andthe MOS transistor of the second ESD protection unit comprises a cellularly constructed MOS transistor having a first number of transistor cells.
1 Assignment
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Accused Products
Abstract
A description is given of a circuit arrangement including at least one electronic component having first and second terminals, and comprising an ESD protection arrangement against disturbance pulses, is the ESD protection arrangement connected via connection terminals in parallel with the electronic component between the first and second terminals. The ESD protection arrangement includes a first ESD protection unit and a second ESD protection unit, that is connected in parallel with the first ESD protection unit and that reacts more rapidly than the first protection unit to a voltage rise at the connection terminals with the formation of a conductive current path between the connection terminals.
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Citations
20 Claims
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1. A circuit arrangement comprising:
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an electronic component having first and second terminals; and an ESD protection arrangement against disturbance pulses, which is coupled via connection terminals in parallel with the electronic component between the first and second terminals, the ESD protection arrangement comprising; a first ESD protection unit; and a second ESD protection unit, coupled in parallel with the first ESD protection unit, wherein the second ESD protection unit reacts more rapidly than the first ESD protection unit to a voltage rise at the connection terminals with a formation of a conductive current path between the connection terminals, wherein the second ESD protection unit comprises a MOS transistor having load path terminals coupled between the first and second terminals and having a control terminal, the control terminal of the MOS transistor being short-circuited with one of the load path terminals or being coupled to one of the load path terminals via a resistor, and the MOS transistor of the second ESD protection unit comprises a cellularly constructed MOS transistor having a first number of transistor cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of operating a circuit arrangement comprising an electronic component having first and second terminals, the method comprising:
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receiving a disturbance voltage between the first and second terminals; switching on a first ESD protection unit coupled via first and second terminals in parallel with the electronic component between the first and second terminals, switching on the first ESD unit comprising forming a conductive current path between the first and second terminals, wherein the first ESD protection unit comprises a MOS transistor having load path terminals coupled between the first and second terminals and having a control terminal, the control terminal of the MOS transistor being short-circuited with one of the load path terminals or being coupled to one of the load path terminals via a resistor, and the MOS transistor of the first ESD protection unit comprises a cellularly constructed MOS transistor having a second number of transistor cells; and after switching on the first ESD protection unit, switching on a second ESD protection unit coupled between the first and second terminals. - View Dependent Claims (16, 17, 18, 19)
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20. A circuit arrangement comprising:
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an electronic component having first and second terminals, the electronic component comprising a cellularly constructed MOS transistor having a first number of transistor cells; and an ESD protection arrangement against disturbance pulses, which is coupled via connection terminals in parallel with the electronic component between the first and second terminals, the ESD protection arrangement comprising; a first ESD protection unit; and a second ESD protection unit, coupled in parallel with the first ESD protection unit, wherein the second ESD protection unit reacts more rapidly than the first ESD protection unit to a voltage rise at the connection terminals with a formation of a conductive current path between the connection terminals, wherein the second ESD protection unit comprises a MOS transistor having load path terminals coupled between the first and second terminals and having a control terminal, the control terminal of the MOS transistor being short-circuited with one of the load path terminals or being coupled to one of the load path terminals via a resistor, and the MOS transistor of the second ESD protection unit comprises a cellularly constructed MOS transistor having a second number of transistor cells.
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Specification