a switching power supply
A technology of switching power supply and switching circuit, which is applied in the direction of electrical components, adjusting electric variables, high-efficiency power electronic conversion, etc., and can solve the problems that high conversion efficiency cannot be achieved
Active Publication Date: 2022-07-29
HUAWEI TECH CO LTD
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Problems solved by technology
Therefore, no matter which inductance value is used in the switching power supply, the switching power supply can only achieve high conversion efficiency within a certain load range, but cannot achieve high conversion efficiency within a large load range.
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[0058] The embodiments of the present application provide a switching power supply for realizing high conversion efficiency in a large load range.
[0059] The embodiments of the present application will be described below with reference to the accompanying drawings. The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific module or device part. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is only a distinguishing manner adopted when describing objects with the same attributes in the embodiments of the present application. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, so that a system, product or device comprising a series of elements is not necessarily limited to those e...
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A switching power supply includes: a first switch circuit, at least one second switch circuit, a switch control circuit, a first inductor switching circuit, a coupled inductor, a voltage input end and a voltage output end. The coupled inductor in the switching power supply can be connected to the first switch circuit, so that signal transmission is realized between the coupled inductor and the first switch circuit, and the coupled inductor can realize signal transmission with the second switch circuit under the control of the first inductor switching circuit, Or the coupled inductance is disconnected from the signal transmission of the second switch circuit under the control of the first inductance switching circuit. Therefore, according to the different control methods of the first inductance switching circuit, the coupled inductance can form different inductance parameters according to different connected switching circuits, and the current injected by the coupled inductance to the voltage output terminal is also different, so different inductances can be implemented according to different load requirements. performance configuration, so that different load requirements can be achieved, for example, high conversion efficiency can be achieved within a large load range.
Description
technical field [0001] The embodiments of the present application relate to the technical field of circuits, and in particular, to a switching power supply. Background technique [0002] Switching power supplies are widely used in various electronic products, especially mobile devices such as mobile phones and notebook computers. These mobile devices have a very strong demand for the miniaturization of switching power supplies and the improvement of power conversion efficiency over a large load range. Taking the switching power supply used in mobile phones as an example, the switching power supply needs to supply power to various electronic modules or components in the mobile phone in a small space, and the conversion efficiency of the switching power supply will affect the heat dissipation performance, maintaining good heat dissipation performance and switching power supply. device miniaturization has become very urgent. [0003] The current switching power supply can inc...
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Patent Timeline
Login to View More IPC IPC(8): H02M3/155
CPCH02M3/158H02M3/1582H02M1/088H02M1/322H02M1/0058H02M1/0064H02M3/1584H02M1/08
Inventor 胡章荣刘鑫衡草飞吴琨
Owner HUAWEI TECH CO LTD