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US 2001/0054948 A1Published application
Fuse circuit configuration
AssigneeInfineon Technologies AG
InventorHeinz Honigschmid
Life of this patent
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Abstract
A fuse circuit configuration is described wherein a compensation capacitor counteracts a parasitic capacitor. The parasitic capacitor occurs between a connection point of a switching transistor and a fuse and ground. The compensation capacitor is connected to an evaluation circuit. In this manner, the negative effects caused by the parasitic capacitor are compensated for.
Claims4
A fuse circuit configuration, comprising:
- a first switching transistor;
- a second switching transistor disposed in series with said first switching transistor and defining a series circuit with a junction point disposed between said first switching transistor and said second switching transistor;
- a fuse connected to said second switching transistor;
- an evaluation circuit connected to said junction point and having an output at which a status of said fuse can be tapped;
- and
- a compensation capacitor connected to said junction point and counteracts a parasitic capacitor occurring between a connection point between said second switching transistor and said fuse on a first side and ground on a second side.
3 more elements
A fuse circuit configuration, comprising:
- a first switching transistor;
- a second switching transistor disposed in series with said first switching transistor and defining a series circuit with a junction point disposed between said first switching transistor and said second switching transistor;
- a fuse connected to said second switching transistor;
- an evaluation circuit connected to said junction point and having an output at which a status of said fuse can be tapped;
- a ground terminal;
- and
- a compensation capacitor connected between said junction point and said ground terminal, said compensation capacitor delivering a charging current for a parasitic capacitor occurring between a connection between said second switching transistor and said fuse on a first side and said ground terminal on a second side.
4 more elements
Dependencies are inferred from the claim text.