Control circuit of adapter
A control circuit and current control circuit technology, applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve problems such as large burden on adapters, heat generation, and danger, and achieve the effect of avoiding excessive working power
Active Publication Date: 2015-12-23
QINGDAO GOERTEK
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Problems solved by technology
When the product is running in the high power consumption mode and charging at the same time, it will cause a great burden on the adapter and cause severe heat, which will cause danger in severe cases.
Method used
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[0047] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0048] The invention provides a control circuit of an adapter, such as figure 1 As shown, the control circuit includes: a power path selection circuit 11, a charging circuit 12 and a current control circuit 13;
[0049] The first input end of the power path selection circuit 11 is connected to the output end of the adapter, that is, the output signal ADAPTER_POWER of the adapter is connected; the second input end of the power path selection circuit 11 is connected to the first end of the battery, that is, That is, the output signal VCC_BAT of the battery is connected, and the output terminal of the power supply path selection circuit 11 is connected with the operating voltage signal SYS_POWER of the system load; the second terminal of ...
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The invention discloses a control circuit of an adapter. The control circuit of the adapter comprises a power supply routing selection circuit, a charging circuit and a current control circuit; the power supply routing selection circuit is used for controlling the adapter to supply power when detecting that the power supply output end of the adapter outputs working voltage, and controlling a battery to supply power when detecting that the power supply output end of the adapter does not output working voltage; the input end of the charging circuit is connected with the output end of the adapter; the charging circuit is used for controlling the adapter to charge the battery; the first input end of the current control circuit is connected with the power supply of the adapter; the second input end of the current control circuit is connected with working voltage signal of a system load; the output end of the current control circuit outputs control voltage to the charging circuit; and the control voltage is used for controlling the magnitude of the charging current of the charging circuit according to the magnitude of the system load.
Description
technical field [0001] The invention relates to adapter power supply technology, in particular to an adapter control circuit. Background technique [0002] Currently, the power consumption of more and more electronic products is increasing, and quite a lot of electronic products need to be configured with an Adapter to charge the battery. When a product operates in different modes, the power consumption is also different. When the adapter is plugged in, the adapter both powers the product and charges the battery. When the product is running in the high power consumption mode and charging at the same time, it will cause a great burden on the adapter and cause severe heat, which will be dangerous in severe cases. Contents of the invention [0003] The invention provides a control circuit of an adapter to adjust the size of the charging current for the adapter to charge the battery, so as to avoid the excessive load of the adapter. [0004] In order to achieve the above ob...
Claims
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IPC IPC(8): H02J7/00H02J9/06
Inventor 林大鹏
Owner QINGDAO GOERTEK