Switching circuit and electron device

The present case discloses a switching circuit and electron device, and the switching circuit includes that a USB charges the specification and detects chip, usb signal control and switching circuit, selector and charging current control circuit. The specification of charging a USB detects the type...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: QIU SHIRONG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present case discloses a switching circuit and electron device, and the switching circuit includes that a USB charges the specification and detects chip, usb signal control and switching circuit, selector and charging current control circuit. The specification of charging a USB detects the type of the first USB port of chip assay to produce first testing result signal. Usb signal controls and a switching circuit electric connection USB charges, and the specification detects the chip, is controlled by first testing result signal to the decision lets a central processing unit and first USB port carry out data transmission. The signal battery that the selector provided first USB port gives battery charger with one of them of power input port's the 2nd signal battery. Charging current control circuit adjusts the electric current that battery charger charges to the battery according to a signal battery, the 2nd signal battery with first testing result signal generate current control signal. This switching circuit has very fast switching efficiency and can reduce software development time -histories and cost.