Bidirectional charging detection circuit and data cable
AssigneesShenzhen Yuanai Electronic Technology Co., Ltd., Dongguan XCOSO Electronic Tech Co., Ltd, Shenzhen Chenqian Top Technology Co., LTD
InventorChangbo Du
Life of this patent
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Abstract
Disclosed is a bidirectional charging detection circuit and a data cable. The circuit includes a first charging interface, a second charging interface electrically connected to the first charging interface, a sampling resistor connected in series between the first charging interface and the second charging interface, and a processing module electrically connected to the sampling resistor and used for identifying a direction of a charging current; wherein the processing module is provided with a first current sampling terminal and a second current sampling terminal. A technical solution of the present disclosure can identify the direction and magnitude of the charging current between the first charging interface and the second charging interface, and can improve reliability and safety of charging.
Claims8
A bidirectional charging detection circuit, comprising a first charging interface, a second charging interface electrically connected to the first charging interface, a sampling resistor connected in series between the first charging interface and the second charging interface, and a processing module electrically connected to the sampling resistor and used for identifying a direction of a charging current;
- wherein the processing module is provided with a first current sampling terminal and a second current sampling terminal, the first current sampling terminal being connected to a common contact between the first charging interface and the sampling resistor, and being used for collecting a first charging current flowing from the first charging interface to the second charging interface and passing through the sampling resistor, the second current sampling terminal being connected to a common contact between the second charging interface and the sampling resistor, and being used for collecting a second charging current flowing from the second charging interface to the first charging interface and passing through the sampling resistor, and the first charging current and the second charging current having opposite directions;
- wherein the processing module comprises an integrated operational amplifier unit connected to the first current sampling terminal and the second current sampling terminal respectively, a processing unit electrically connected to the integrated operational amplifier unit, and a charging control unit electrically connected to the processing unit and used for controlling charging;
- and
- wherein the processing module is further provided with a voltage sampling terminal connected to the integrated operational amplifier unit, the voltage sampling terminal being connected to a voltage sampling unit for sampling a charging voltage.
Dependencies are inferred from the claim text.