An acot step-down converter
A step-down converter and converter technology, which is applied in the direction of output power conversion devices, instruments, DC power input conversion to DC power output, etc., can solve the problems of complex system stability, increased area, and poor output voltage accuracy. Achieve system stability, easy control, improve output voltage accuracy, and improve accuracy
Active Publication Date: 2022-04-15
WUXI ETEK MICROELECTRONICS
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the introduction of the error amplifier, the stability of the system becomes complicated, making the design more difficult
In order to stabilize the system, a reasonable frequency compensation network must be added to the output of the error amplifier, where the compensation capacitor is large, thereby increasing the area
[0003] Although the traditional ACOT buck converter without error amplifier has a simple structure and easy control of loop stability, the accuracy of the output voltage is poor.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a step-down converter, and discloses an ACOT (Adaptive Constant On Time) step-down converter. Including a buck converter and an ACOT controller connected to the buck converter; the ACOT controller includes: a voltage divider; a conduction time controller, used to provide the conduction time of the high-level power tube; a sawtooth wave generator, used to provide Sawtooth wave signal and sawtooth wave valley signal; slope generator, used to provide slope signal and slope peak signal; comparator, used to provide pulse signal according to the above four signals, feedback voltage and reference voltage; trigger, used to provide pulse signal according to The pulse number and time control signals are used to generate a high level control signal and a low level control signal to control the buck converter. Both the sawtooth wave generator and the ramp generator include a sample-and-hold circuit for sampling and holding the valley value of the sawtooth wave signal and the peak value of the ramp signal.
Description
technical field [0001] The invention relates to a step-down converter, in particular to an ACOT step-down converter. Background technique [0002] In an Adaptive Constant On Time (ACOT for short) step-down converter with a traditional structure, in order to improve the accuracy of the output voltage, an error amplifier is usually required. However, due to the introduction of the error amplifier, the stability of the system becomes complicated, making the design more difficult. In order to make the system stable, a reasonable frequency compensation network must be added to the output of the error amplifier, and the compensation capacitor is relatively large, thus increasing the area. [0003] However, although the traditional ACOT step-down converter without an error amplifier has a simple structure and is easy to control the loop stability, the accuracy of the output voltage is poor. figure 1 It is a schematic diagram of the structure of a traditional ACOT step-down conver...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M1/088
CPCH02M3/156H02M1/088
Inventor 袁敏民汪东谢凌寒刘钰孙元良孙思兵
Owner WUXI ETEK MICROELECTRONICS