Adaptive gain and bandwidth ramp generator
AssigneeTexas Instruments Incorporated
InventorsZhangyi Xie, Neil Gibson, Stefan Herzer
Life of this patent
Estimating the term…
Abstract
In some examples, a circuit includes a resistor network, a filter, a current generator, and a capacitor. The resistor network has a resistor network output and is adapted to be coupled between a switch terminal of a power converter (104) and a ground terminal. The filter has a filter input and a filter output, the filter input coupled to the resistor network output. The current generator has a current generator output and first and second current generator inputs, the first current generator input configured to receive an input voltage and the second current generator input coupled to the filter output. The capacitor is coupled between the current generator output and the ground terminal.
Claims20
A circuit, comprising:
- a resistor network having a resistor network output, the resistor network adapted to be coupled between a switch terminal of a power converter and a ground terminal;
- a filter having a filter input and a filter output, the filter input coupled to the resistor network output;
- a current generator having a current generator output and first and second current generator inputs, the first current generator input configured to receive an input voltage and the second current generator input coupled to the filter output;
- and
- a capacitor coupled between the current generator output and the ground terminal.
A circuit, comprising:
- a filter configured to:
- receive a signal representative of an output of a power converter;
- and
- extract direct-current information from the signal representative of the output of the power converter to provide a filtered signal;
- a current generator configured to:
- receive an input voltage of the power converter;
- receive the filtered signal;
- and
- provide a ramp current based on the input voltage of the power converter and the filtered signal;
- and
- a capacitor configured to provide a ramp voltage based on charging and discharging according to the ramp current.
A circuit, comprising:
- a battery configured to provide a battery voltage;
- a filter configured to:
- receive a signal representative of an output of a power converter;
- and
- attenuate high-frequency components of the signal representative of the output of the power converter to provide a filtered signal;
- a current generator configured to provide a ramp current based on the battery voltage and the filtered signal;
- and
- a capacitor configured to provide a ramp voltage based on charging and discharging according to the ramp current.
Dependencies are inferred from the claim text.