11 results about "PD protocol" patented technology

The application relates to the technical field of data processing, and discloses a method for realizing a PD protocol PHY layer through software and an MCU, wherein the method is characterized in that the method realizes the PHY layer of the PD protocol through software by sequentially detecting whether there is preamble data, searching for SOP characters in received data, searching for EOP data, and updating check data of the received data before the SOP is searched and the EOP data is searched, so that the PHY layer of the PD protocol is realized through software, the hardware for realizing the PHY layer in a PD protocol chip is reduced through the operation, and thus the area and cost of the PD protocol chip can be reduced; in addition, the software is realized, the overall flexibility is high, the restriction of the PHY layer on the PD protocol chip can be reduced, and thus the message extraction can be customized according to actual requirements.

This invention provides a method and system for black-starting V2G charging piles, relating to the field of V2G charging pile black-start technology. The method includes a protocol control module detecting the Type-C interface electrical signal; when a portable power module is connected, performing a USB-PD protocol communication handshake with the portable power module via the CC channel; reading the PDO message of the power data object and obtaining capability parameters; the protocol control module controlling the portable power module to output high-voltage DC power to supply power to the control circuit of the V2G charging pile and wake up the control unit; the control unit establishing a discharge protocol communication link with the vehicle's BMS; generating a contactor closing command after discharge interaction and insulation detection; controlling the vehicle to close the high-voltage contactor; establishing a high-voltage DC output link; and the control unit converting the high-voltage DC power into industrial frequency AC power for output to household loads, thereby reducing the cost of black-starting V2G charging piles and improving operational safety and low-temperature starting performance.

This utility model discloses a dual Type-C interface circuit and a tablet computer. The dual Type-C interface circuit includes: a Type-C1 interface, a Type-C2 interface, a PMU chip, a CPU chip, a charging chip, a battery, a PD protocol chip, and a control circuit. The PMU chip is connected to the DP1 / DM1 and CC1 pins of the Type-C1 interface and the CPU chip. The CPU chip is connected to the CPU_INT1 pin of the Type-C1 interface, the CPU_INT2 pin of the Type-C2 interface, the charging chip, and the PD protocol chip. The charging chip is connected to the battery and the DP2 / DM2 pin of the Type-C2 interface. The CC2 pin of the Type-C2 interface is connected to the PD protocol chip. The control circuit is connected to the VBUS1 pin of the Type-C1 interface, the VBUS2 pin of the Type-C2 interface, the CPU chip, the battery, and the charging chip. This utility model designs a USB fast charging circuit and a logic judgment circuit to realize the dual Type-C interface function and meet usage requirements.

The utility model relates to LEV vehicle technical field, concretely is a kind of PD fast charging circuit suitable for LEV vehicle.Voltage input end is connected with power control module and LDO voltage reducing module respectively, the output end of power control module is connected with DC-DC power module through DC-IN pin, DC-DC power module and PD protocol chip module connect, PD protocol chip module and Type-C female seat connect, Type-C female seat is connected to plug-in identification module, plug-in identification module transmission detection signal to MCU control module, Type-C female seat transmission detection signal to operational amplifier-output current detection module, operational amplifier-output current detection module transmission detection signal to MCU control module, the output end of LDO voltage reducing module is connected with operational amplifier power control module, and MCU control module and power control module connect.Compared with prior art, solve fast charging protocol chip low voltage resistance, power consumption is big, circuit complex and other defects, with high voltage resistance, power consumption is extremely low, automatically identify insertion and close and other characteristics, the circuit versatility is strong, can be modularized fast development.

The present application relates to the technical field of mobile power supply, and particularly discloses a mobile power supply with standard PD docking station function and inversion function and an implementation method, wherein the mobile power supply with standard PD docking station function and inversion function is provided with an uplink Type-C interface, a downlink Type-C interface, and a first function circuit and a second function circuit electrically connected to the uplink Type-C interface and the downlink Type-C interface respectively, can supply power externally or charge a battery pack through the uplink Type-C interface, and can supply power externally through the downlink Type-C interface; the uplink Type-C interface and the downlink Type-C interface can also perform USB data transmission and DP video data transmission; by integrating power supply, docking station data transmission and AC inversion function, the number of devices required for outdoor operation and wiring is reduced, lightweight integrated design is realized, carrying and deployment costs are reduced, and use efficiency is improved; in addition, synchronous operation of standard PD protocol power supply and USB / DP data transmission of the two downlink Type-C interfaces can be realized, and actual needs of multi-peripheral standard PD power supply and data interaction are met.

This invention discloses a dual Type-C intelligent transformer charging and discharging control circuit, device, and method. The dual Type-C intelligent transformer charging and discharging control circuit includes: a first Type-C female connector, a second Type-C female connector, a PD protocol control module, a charging module, a transformer control module, a system power supply module, and a discharging module. The discharging module includes a first discharging control unit, a second discharging control unit, a third discharging control unit, and a fourth discharging control unit. The charging module includes a first charging control unit, a second charging control unit, a third charging control unit, and a fourth charging control unit. This invention separates the charging and discharging control in the dual Type-C system, maximizing the utilization of the Type-C power source's discharge capacity, meeting the needs of different scenarios, and providing a superior user experience.

The utility model relates to the technical field of charging, and relates to a charging circuit and a charging device. The charging circuit comprises a first power conversion module, a second power conversion module, a first PD protocol chip, a second PD protocol chip, a first output port and a second output port, the first power conversion module is connected with an external power supply, the first output port and the first PD protocol chip, the first PD protocol chip is connected with the first output port, and the second PD protocol chip is connected with the second output port. The first power conversion module is connected with an external power supply, a first output port and a first PD protocol chip, the second power conversion module is connected with an external power supply, a second output port and a second PD protocol chip, the second PD protocol chip is connected with the second output port, the first PD protocol chip and the second PD protocol chip have the same model, a selection pin of the first PD protocol chip is set to be at a high level so as to call a first PDO protocol, a selection pin of the second PD protocol chip is set to be at a low level so as to call a second PDO protocol. The second PDO protocol is different from the first PDO protocol. The design and verification workload can be reduced, and the material warehouse management difficulty and cost are reduced.

This utility model discloses a multi-level dimming desk lamp, including a microcontroller, a Type-C female input circuit, an LDO voltage regulator circuit, a PD protocol communication circuit, a rotary encoder circuit, and a matrix LED lamp circuit. The Type-C female input circuit is connected to the microcontroller through the PD protocol communication circuit and also through the LDO voltage regulator circuit. The rotary encoder circuit is connected to both the LDO voltage regulator circuit and the microcontroller. The matrix LED lamp circuit is connected to the Type-C female input circuit, the LDO voltage regulator circuit, and the microcontroller. The microcontroller acquires the level signal and waveform output by the rotary encoder circuit and determines the dimming signal for the matrix LED lamp circuit. The matrix LED lamp circuit dims according to the dimming signal. In embodiments of this utility model, it can not only connect to power adapters or charging devices supporting the PD protocol via the Type-C interface for power supply, but also perform multi-level flexible dimming.

The application discloses a mobile phone OTG self-adaptive boost control method and system based on load fingerprint identification and belongs to the technical field of power management. In view of the problem that when the mobile phone OTG reversely supplies power, the traditional boost control cannot adapt to the transient power consumption of heterogeneous peripherals and voltage drop is prone to occurring, the application proposes that after the mobile phone and the peripheral complete USB PD protocol negotiation and establish basic power supply, electrical fluctuation data in the standby state of the peripheral is collected, load electrical characteristic fingerprints are constructed in combination with E-Mark information and PD application parameters; the type of the peripheral is identified by using a lightweight neural network, and a typical power consumption atlas in the cloud is called; and the transient response parameters of the boost converter are dynamically configured according to this, including the current ramping rate and loop compensation, so that adaptive boost output is realized. The application can effectively inhibit the peripheral starting transient voltage drop and improve the OTG power supply stability and conversion efficiency.