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US 12,706,516 B2Granted
Compensation circuit for transient response improvement
AssigneeTexas Instruments Incorporated
InventorsMohamed Ahmed, Matthew Schurmann, Rengang Chen
Life of this patent
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Abstract
A circuit includes a compensation inductor, a compensation resistor, and a current emulation circuit. The current emulation circuit has a time constant smaller than a time constant of the compensation inductor and the compensation resistor. The current emulation circuit includes a sense resistor having a first terminal coupled with a first terminal of the compensation inductor, and a sense capacitor having a first terminal coupled with a second terminal of the sense resistor and a second terminal coupled with ground.
Claims26
A circuit comprising:
- a resistor having a first terminal coupled to an inductor terminal, and a second terminal coupled to a capacitor terminal;
- a current summing circuit having a first input coupled to a first current sense terminal, a second input coupled to a second current sense terminal, and an output;
- and
- a controller including:
- a compensator circuit having a first input, a second input, and an output, the first input coupled to the second terminal of the resistor, and the second input coupled to the output of the current summing circuit;
- and
- a modulator circuit having an input coupled to the output of the compensator circuit.
4 more elements
A circuit comprising:
- transformer circuitry including:
- a first transformer including a first primary winding and a first secondary winding, the first secondary winding having first and second terminals;
- and
- a second transformer including a second primary winding and a second secondary winding, the second secondary winding having a first terminal coupled to the second terminal of the first secondary winding and a second terminal coupled to a ground terminal;
- an inductor having a first terminal coupled to the ground terminal and a second terminal coupled to the first terminal of the first secondary winding;
- a first resistor having a first terminal coupled to the second terminal of the inductor, and a second terminal;
- a capacitor having a first terminal coupled to the second terminal of the first resistor and a second terminal coupled to the ground terminal;
- a second resistor having a terminal;
- and
- a third resistor having a first terminal coupled to the second terminal of the first resistor and to the first terminal of the capacitor, and a second terminal coupled to the terminal of the second resistor.
7 more elements
A system comprising:
- a converter circuit including:
- a first power stage having a first control input and a first output;
- and
- a second power stage having a second control input and a second output;
- an inductor having a first terminal coupled to a ground terminal, and a second terminal;
- a resistor having a first terminal coupled to the second terminal of the inductor, and a second terminal;
- a capacitor having a first terminal coupled to the second terminal of the resistor and a second terminal coupled to the ground terminal;
- a controller having a feedback input coupled to the second terminal of the resistor and to the first terminal of the capacitor, a first current sense terminal coupled to the first output of the first power stage, and a second current sense terminal coupled to the second output of the second power stage, the controller including:
- a current summing circuit having a first input coupled to the first current sense terminal and a second input coupled to the second current sense terminal;
- a compensator having inputs coupled to an output of the current summing circuit and the feedback input;
- and
- a modulator having an input coupled to an output of the compensator, and outputs coupled to the first and second control inputs of the first and second power stages.
9 more elements
Dependencies are inferred from the claim text.