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US 11,079,414 B2Granted
Current sense circuit and method thereof
AssigneeNXP B.V.
InventorJaume Tornila Oliver
Life of this patent
Estimating the term…
Abstract
A current sense circuit is provided. The current sense circuit includes an input terminal coupled to sense an input current. A first terminal of a diode is coupled as the input terminal. A current limiter has a first terminal coupled to a second terminal of the diode. A current source is coupled to a second terminal of the current limiter and configured to generate a first current. A current mirror includes a first leg coupled to the current limiter and the current source and a second leg coupled for providing an output current.
Claims20
A current sense circuit comprising:
- an input terminal coupled to sense an input current;
- a diode having a first terminal and a second terminal, the first terminal coupled at the input terminal;
- a current limiter having a first terminal and a second terminal, the first terminal coupled to the second terminal of the diode at a first node;
- a first current source having a first terminal and a second terminal and configured to generate a first current, the first terminal coupled to the second terminal of the current limiter at a second node;
- and
- a first current mirror coupled to a first voltage supply terminal and having a first leg and a second leg, the first leg coupled at the second node and the second leg coupled for generating a first output current.
3 more elements
A current sense circuit comprising:
- a diode having an anode terminal coupled to an input terminal and a cathode terminal, the input terminal coupled for sensing an input current;
- a current limiter having a first terminal and a second terminal, the first terminal coupled to the cathode terminal of the diode at a first node;
- a first current mirror coupled to a first voltage supply terminal and having a first leg and a second leg, the first leg coupled to the second terminal of the current limiter at a second node;
- a first current source including a first terminal and a second terminal and configured to generate a first current, the first terminal coupled at the second node;
- a second current source including a first terminal and a second terminal and configured to generate a second current, the first terminal coupled to the second leg of the first current mirror at a third node;
- and
- a first current branch coupled at the third node, the first current branch coupled for generating a first output current.
4 more elements
A current sense circuit comprising:
- a current rectifier circuit having a first terminal coupled to an input terminal, the input terminal coupled for sensing an input current;
- a current limiter having a first terminal and a second terminal, the first terminal coupled to a second terminal of the current rectifier circuit at a first node;
- a first current mirror coupled to a first voltage supply terminal and having a first leg and a second leg, the first leg coupled to the second terminal of the current limiter at a second node;
- a first current source having a first terminal and a second terminal and configured to generate a first current, the first terminal coupled at the second node;
- a second current source having a first terminal and a second terminal and configured to generate a second current, the first terminal coupled to the second leg of the first current mirror at a third node;
- and
- a first current branch coupled at the third node, the first current branch coupled for generating a first output current.
4 more elements
Dependencies are inferred from the claim text.