Abstract: A DC-DC converter includes: a transformer; first and second switching circuits, each coupled to one of two sides of the transformer, respectively, and each including at least two switches; a first current detection module, coupled to one side of the transformer and detecting a current at the side; a first conversion module, coupled to an output of the first current detection module, and converting a signal of the current received from the output to a voltage signal; a first comparison module comparing the voltage signal received from the output with a reference voltage signal, and generating a first modulation signal based on the comparison result; and a first controller generating a first control signal which is used for at least one switch in the second switching circuit and based on the first modulation signal and a drive signal of at least one switch in the first switching circuit.

Abstract: A circuit for a bi-directional DC-DC converter, a bi-directional DC-DC converter and a method for operating a bi-directional DC-DC converter are disclosed. The circuit comprises: a first input terminal and a second input terminal configured to receive a DC input; a DC output terminal; a first switch and a second switch; a first control interface configured to control the first switch to be switched on and off; a second control interface configured to control the second switch to be switched on and off; a first primary winding coupled in series with the first switch between the first input terminal and a common terminal; a second primary winding coupled in series with the second switch between the second input terminal and the common terminal; and a common secondary winding with one end coupled to the DC output terminal.

Abstract: A CAN circuit structure and a vehicle diagnostic device are provided. The CAN circuit structure includes: a pair of data buses on which differential signals are transmitted; a CAN transceiver operating in a first voltage domain; a clamp circuit disposed between the CAN transceiver and the data buses for clamping a high level or a low level of the differential signals; a CAN controller operating in a second voltage domain; and a signal isolation circuit disposed between the CAN transceiver and the CAN controller for isolating the first voltage domain from the second voltage domain. The circuit allows for the use of a standard CAN transceiver chip that meets a general standard in a special CAN circuit structure, thus effectively reducing manufacturing costs of related devices.

Abstract: A driver device, a method for monitoring a driver device, and a power supply device are disclosed. The driver device includes a controller and a driver module. The driver module includes a voltage divider loop and a plurality of drivers. The voltage divider loop includes a pull-down resistor and one or more corresponding resistors connected to each of the plurality of drivers, where the pull-down resistor and the one or more corresponding resistors are coupled to a power supply via a first node, and the first node is coupled to the controller.

Abstract: A DC-DC converter includes: a transformer; first and second switching circuits, each coupled to one of two sides of the transformer, respectively, and each including at least two switches; a first current detection module, coupled to one side of the transformer and detecting a current at the side; a first conversion module, coupled to an output of the first current detection module, and converting a signal of the current received from the output to a voltage signal; a first comparison module comparing the voltage signal received from the output with a reference voltage signal, and generating a first modulation signal based on the comparison result; and a first controller generating a first control signal which is used for at least one switch in the second switching circuit and based on the first modulation signal and a drive signal of at least one switch in the first switching circuit.

Abstract: The present invention relates to a CAN circuit structure and a vehicle diagnostic device including the same. The CAN circuit structure includes: a pair of data buses on which differential signals are transmitted; a CAN transceiver operating in a first voltage domain, where the CAN transceiver is connected to the data buses for receiving and transmitting the differential signals; a clamp circuit disposed between the CAN transceiver and the data buses for clamping a high level or a low level of the differential signals, so that a difference between voltages of the differential signals is adapted to the CAN transceiver; a CAN controller operating in a second voltage domain, where the CAN controller is connected to the CAN transceiver for communicating with the CAN transceiver; and a signal isolation circuit disposed between the CAN transceiver and the CAN controller for isolating the first voltage domain from the second voltage domain.

Abstract: Embodiments of the present invention relate to a wheel aligner. The wheel aligner includes at least one camera assembly including a shielding assembly and a camera device accommodated in the shielding assembly. The shielding assembly is configured to expose a lens of the camera device when the camera device is in operation and to shield the lens of the camera device when the camera device is not in operation. The wheel aligner according to the embodiments of the present invention can effectively prevent the lens of the camera device from being polluted by surroundings, while ensuring proper operation of the camera device.