BOOST circuit and control method thereof
A booster circuit and control chip technology, which is applied to emergency protection circuit devices, electrical components, and conversion equipment without intermediate conversion to AC, can solve problems such as poor working stability, and achieve the effect of improving output stability
Pending Publication Date: 2022-01-11
智新科技股份有限公司
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Problems solved by technology
[0004] The embodiment of the present application provides a BOOST booster circuit and its control method to solve the technical problem of poor working stability of the traditional booster circuit in the related art under a wide range of input voltages
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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0037] The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations / steps, nor must they be performed in the order described. For example, some operations / steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actu...
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The invention discloses a BOOST circuit and a control method thereof, which relate to the technical field of switching direct current booster circuits. The BOOST circuit comprises an energy storage inductor L, a diode D1, an energy storage capacitor branch, a resistor R1, a resistor R2, a control chip U and a field effect transistor Q; one end of the energy storage inductor L is connected with the anode of the diode D1, the other end of the energy storage inductor L is used for receiving an input voltage Vin, the cathode of the diode D1 is used for outputting a boosted output voltage Vout and is connected with one end of the energy storage capacitor branch, and the other end of the energy storage capacitor branch is grounded; the first end of the resistor R1 is connected with the cathode of the diode D1, and the second end is connected in series with the resistor R2 and then grounded; the voltage feedback end of the control chip U is connected with the second end of the resistor R1, and the driving end of the control chip U is connected with the anode of the diode D1 through the field effect transistor Q; and the control chip U is configured to adjust the duty ratio according to the feedback voltage obtained from the voltage feedback end, so that the fluctuation of the output voltage Vout is adjusted through the switching of the field effect transistor Q. The output stability of the boost circuit can be improved.
Description
technical field [0001] The present application relates to the technical field of a switching DC boost circuit, in particular to a BOOST boost circuit and a control method thereof. Background technique [0002] With the gradual development of the green economy, the development of electric vehicles is also gradually rapid. As an important part of electric vehicles, the motor controller is an indispensable part of driving the car. In order to improve the stability of the motor controller, it is required that the motor controller can work stably under a wide low-voltage power input. [0003] However, the traditional step-up circuit has the disadvantage of poor working stability under a wide range of input voltages, which is also to be solved. Contents of the invention [0004] Embodiments of the present application provide a BOOST boost circuit and a control method thereof to solve the technical problem of poor working stability of the traditional boost circuit in the related...
Claims
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IPC IPC(8): H02M3/07H02M1/00H02H7/12
CPCH02M3/07H02M1/00H02H7/1213
Inventor 周琛徐刚王闻宇全胜单胜军闫小龙肖浩
Owner 智新科技股份有限公司