A bidirectional switch circuit, mobile power supply circuit and control method thereof
A bidirectional switch circuit and circuit technology, applied in electric vehicles, circuit devices, load supply circuits, etc., can solve problems such as high cost and complex circuit structure, achieve perfect functions, simple circuit modules, and realize the effect of output short circuit protection function
Active Publication Date: 2015-09-30
CHENGDU MONOLITHIC POWER SYST
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Problems solved by technology
[0003] like figure 1 As shown, the existing mobile power supply circuit 10 includes a series of circuits such as a battery 102, a charging circuit 101, a switch circuit 103, a selection circuit 104, and a USB interface circuit 105. The circuit structure is complicated and the cost is relatively high.
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[0019] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.
[0020] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in on...
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The present invention proposes a bidirectional switch circuit, and a mobile power supply circuit and a control method using the bidirectional switch circuit. The circuit structure of the mobile power supply circuit is simple, which not only realizes the protection of the Output short circuit protection function. And when the voltage required by the load is lower than the battery voltage, it can still complete the normal power supply function for the load. The mobile power supply circuit includes: an input terminal; an output terminal; a battery; a switch circuit having a first terminal and a second terminal, wherein the first terminal is coupled to the battery, and the second terminal is coupled to the mobile power supply circuit an output terminal; and a selection circuit having a first terminal and a second terminal, wherein the first terminal is coupled to the input terminal of the mobile power supply circuit, and the second terminal is coupled to the output terminal of the mobile power supply circuit.
Description
technical field [0001] The present invention relates to electronic circuits, and more specifically, the present invention relates to a bidirectional switch circuit, a mobile power supply circuit using the bidirectional switch circuit and a control method thereof. Background technique [0002] A mobile power bank is a portable charging device that integrates power supply and charging functions. It can charge mobile phones and other digital devices anytime, anywhere or standby power. Mobile power circuits usually include batteries and a series of control circuits. figure 1 A circuit structure block diagram of an existing mobile power supply circuit 10 is shown. Such as figure 1 As shown, the mobile power supply circuit 10 includes a charging circuit 101 , a battery 102 , a switch circuit 103 , a selection circuit 104 and a USB interface circuit 105 . In practical applications, when the mobile power supply circuit 10 is connected to the adapter, that is, when the input termi...
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IPC IPC(8): H02J7/00
CPCH02J7/0063H02J9/061H02J7/0068H02J7/00714
Inventor 徐敏张杰林孔小丽李小青任远程
Owner CHENGDU MONOLITHIC POWER SYST