Electric voltage constant and current constant transfer controller
A conversion controller and constant current technology, which is applied in the direction of control/regulation systems, instruments, and adjustment of electrical variables, etc., can solve the problems that the error amplifier is difficult to control the gain accurately, and it is difficult to accurately design the control loop.
Inactive Publication Date: 2009-03-25
NIKO SEMICON
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage of this circuit 20 is that when implementing loop control, it is difficult for the error amplifier 203 to control the gain accurately, so it is difficult to accurately design the control loop
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
[0040] The present invention uses a three-terminal error amplifier to compare the output voltage feedback signal, the output current feedback signal and the reference voltage, so as to realize the switching of constant current control and constant voltage control functions. At the same time, the voltage / current detection conversion circuit can be used to scale , Adjust the level of the output voltage feedback signal and output current feedback signal, so as to adjust the constant voltage control and constant current control point adjustment. The following describes the active voltage control gate driving circuit of the present invention in detail with reference to the icons.
[0041] image 3 It is a circuit diagram of the constant voltage constant current conversion control circuit of the present invention. Such as image 3 As shown, the constant voltage constant current conversion control circuit includes a voltage sensing circuit 33, a current sensing circuit 34, and a constan...
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 constant voltage and constant current switching controller, which comprises a voltage detecting and switching circuit, a current detecting and switching circuit and an error amplifying circuit, wherein the voltage detecting and switching circuit receives at least one output voltage detection signal and a first reference voltage signal and outputs at least one voltage detecting and switching reference signal; the current detecting and switching circuit receives at least one output current detection signal and one second reference voltage signal and outputs at least one current detecting and switching reference signal; and the error amplifying current receives the voltage detecting and switching reference signal, the current detecting and switching reference signal and a third reference voltage signal and outputs at least one error amplifying signal, wherein the error amplifying circuit outputs the at least one error amplifying signal according to the voltage detecting and switching reference signal and the third reference voltage signal when the quasi-phase of the voltage detecting and switching reference signal is larger than that of the current detecting and switching reference signal, and outputs the at least one error amplifying signal according to the current detecting and switching reference signal and the third reference voltage signal when the quasi-phase of the voltage detecting and switching reference signal is smaller than that of the current detecting and switching reference signal. Therefore, the constant voltage and constant current switching controller can realize constant voltage and constant current switching control.
Description
Technical field [0001] The invention relates to a power conversion control circuit, in particular to a constant voltage and constant current conversion control circuit. Background technique [0002] Constant voltage and constant current conversion control can be applied to lithium battery charging modules, as well as current-limiting and stabilizing modules. [0003] The lithium battery charging module first uses constant current control, so that the lithium battery is quickly charged during the constant current control period; when the lithium battery voltage level reaches a preset protection value, the lithium battery charging module switches to constant voltage control to ensure Control the voltage level of the lithium battery to realize lithium battery protection and lithium battery charging mechanism. [0004] The current-limiting voltage stabilizer module uses constant voltage control to control the output load voltage; when the output load current reaches a preset protecti...
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 Applications(China)
IPC IPC(8): G05F1/10G05F1/46
Inventor 丁明强
Owner NIKO SEMICON