Methods and apparatus to generate and compensate an output voltage of regulator circuitry
AssigneeTexas Instruments Incorporated
InventorsVikram Banerjee, Biraja Dash
Life of this patent
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Abstract
An example apparatus includes: pass gate circuitry having a first terminal and a second terminal; process tracker circuitry having a first terminal and a second terminal, the first terminal of the process tracker circuitry coupled to the first terminal of the pass gate circuitry; and temperature compensation circuitry having a first terminal and a second terminal, the first terminal of the temperature compensation circuitry coupled to the second terminal of the process tracker circuitry, and the second terminal of the temperature compensation circuitry coupled to the second terminal of the pass gate circuitry.
Claims20
An apparatus comprising:
- pass gate circuitry having a first terminal and a second terminal;
- process tracker circuitry having a first terminal and a second terminal, the first terminal of the process tracker circuitry coupled to the first terminal of the pass gate circuitry;
- and
- temperature compensation circuitry having a first terminal and a second terminal, the first terminal of the temperature compensation circuitry coupled to the second terminal of the process tracker circuitry, and the second terminal of the temperature compensation circuitry coupled to the second terminal of the pass gate circuitry, wherein the temperature compensation circuitry further has a third terminal, the apparatus further comprising current mirror circuitry having a first terminal and a second terminal, the first terminal of the current mirror circuitry coupled to the second terminal of the pass gate circuitry and the second terminal of the temperature compensation circuitry, the second terminal of the current mirror circuitry coupled to the third terminal of the temperature compensation circuitry.
An apparatus comprising:
- process tracker circuitry having a terminal;
- and
- temperature compensation circuitry including:
- a first transistor having a first terminal and a control terminal;
- a second transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the second transistor coupled to the first terminal of the first transistor;
- a third transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the third transistor is coupled to the control terminal of the first transistor and the second terminal of the second transistor;
- a fourth transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the fourth transistor coupled to the control terminal of the third transistor and the control terminal of the third transistor;
- and
- a fifth transistor having a first terminal and a control terminal, the first terminal of the fifth transistor coupled to the terminal of the process tracker circuitry, the control terminal of the fifth transistor coupled to the control terminal of the second transistor, the second terminal of the third transistor, and the second terminal of the fourth transistor.
An apparatus comprising:
- pass gate circuitry configured to source a first current from a supply;
- process tracker circuitry coupled to the pass gate circuitry, the process tracker circuitry configured to:
- generate an output voltage responsive to the first current, the output voltage having a negative temperature dependency;
- and
- generate a feedback current responsive to generating the output voltage;
- and
- temperature compensation circuitry coupled to the process tracker circuitry and the pass gate circuitry, the temperature compensation circuitry configured to:
- generate an offset voltage having a positive temperature dependency;
- and
- compensate the output voltage with the offset voltage.
Dependencies are inferred from the claim text.