Methods and apparatus to improve switching conditions in a closed loop system
AssigneeTexas Instruments Incorporated
InventorsDavid Wayne Evans, Kavitha Rapolu
Life of this patent
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Abstract
Methods, apparatus, systems and articles of manufacture are disclosed to improve switching conditions in a closed loop system. An example device includes a first switch adapted to be coupled to a first node, a second switch adapted to be coupled to a second node, a capacitor including a first terminal and a second terminal, wherein the first terminal is coupled the first switch, and wherein the second terminal is coupled to the second switch, a first multiplier coupled to the first terminal and to the second terminal, wherein the first multiplier is adapted to be coupled to at least a third node and a fourth node, and a second multiplier coupled to the first terminal and to the second terminal.
Claims19
A device comprising:
- a first switch adapted to be coupled to a first node;
- a second switch adapted to be coupled to a second node;
- a capacitor including a first terminal and a second terminal, wherein the first terminal is coupled the first switch, and wherein the second terminal is coupled to the second switch;
- a first multiplier coupled to the first terminal and to the second terminal, wherein the first multiplier is adapted to be coupled to at least a third node and a fourth node;
- a second multiplier coupled to the first terminal and to the second terminal;
- and
- a buffer including an input terminal and an output terminal, the output terminal coupled to first switch, and the input terminal adapted to be coupled the first node.
A system to improve switching conditions, the system comprising:
- a first capacitor;
- a first stage coupled to the first capacitor;
- a second stage coupled to the first capacitor, wherein the second stage includes a converter to reduce settling time when converting an analog signal to a digital signal by:
- charging a first terminal of a second capacitor to a first voltage and charging a second terminal of the second capacitor to a second voltage;
- in response to a first voltage threshold satisfied, adjusting a multiplier to a first ratio;
- and
- in response to a second voltage threshold satisfied, adjusting the multiplier to a second ratio;
- and
- the converter to transmit the digital signal to the first stage via the first capacitor.
A method to improve switching conditions when converting an analog signal to a digital signal, the method comprising:
- charging a first terminal of a capacitor to a first voltage using a compensator;
- charging a second terminal of the capacitor to a second voltage using the compensator;
- in response to a first trigger indicating a feedback signal related to the second voltage meets a first voltage threshold, adjusting a multiplier ratio to a first ratio using a multiplier;
- in response to a second trigger indicating the feedback signal related to the second voltage meets a second voltage threshold, adjusting the multiplier ratio to a second ratio using the multiplier;
- and
- transmitting the digital signal to a low-voltage stage using the compensator, the digital signal proportional to the feedback signal.
Dependencies are inferred from the claim text.