Constant on time controller
AssigneeGreen Solution Technology Co., Ltd.
InventorsShian-Sung Shiu, Chao Shao, Li-Min Lee
Life of this patent
Estimating the term…
Abstract
The present invention provides a constant on time controller packaged in one single package for controlling a buck converting circuit to convert an input voltage into an output voltage. The constant on time controller includes an input voltage detecting circuit, an on-time determining circuit and a driving circuit. The input voltage detecting circuit receives a bootstrap voltage to generate an input voltage detecting signal indicative of the input voltage. The on-time determining circuit receives the input voltage detecting signal and generates an on-time signal in response to the input voltage detecting signal and the output voltage. The driving circuit controls the buck converting circuit according to the n-time signal.
Claims14
A constant on time controller packaged in one single package for controlling a buck converting circuit to convert an input voltage into an output voltage, the constant on time controller comprising:
- an input voltage detecting circuit for receiving a bootstrap voltage to generate an input voltage detecting signal indicative of the input voltage;
- an on-time determining circuit for receiving the input voltage detecting signal, and generating an on-time signal according to the output voltage and the input voltage detecting signal;
- and
- a driving circuit for controlling the buck converting circuit according to the on-time signal.
A constant on time controller packaged in one single package for controlling a buck converting circuit to convert an input voltage into an output voltage, the constant on time controller comprising:
- an input voltage detecting circuit for receiving a high-side control signal to generate an input voltage detecting signal indicative of the input voltage;
- an on-time determining circuit for receiving the input voltage detecting signal, and generating an on-time signal according to the output voltage and the input voltage detecting signal;
- and
- a driving circuit for generating the high-side control signal according to the on-time signal and a bootstrap voltage to control the buck converting circuit.
Dependencies are inferred from the claim text.