Recently, committed to the Asia Pacific market leading semiconductor components distributors --- WPG holdings announced that its subsidiary Youshang launched international manufacturers device QC3.0+USB PD combo car charger based on Type-C solution.

                 1-QC3.0+USB PD Type-C car charger solution system architecture diagram

          The program maximum power up to 60W, the use of MCU and open software design, can automatically identify the load charging protocol for the QC3.0 or USB PD, and share a Type-C interface, with the advantages of low cost, large flexibility. MCU with the market's most widely used ARM Cortex M0 series to the Friends of the General Assembly of Friends of the Italian law is still STM32F030K6 STM32F030K6, with Fairchild FUSB302 Type-C controller, and ON Semiconductor (ON Semi) QC3.0 Identification IC NCP4371, power control chip is used in the United States and Buck boost (Buck-Boost) IC NCP81239.

                      2-QC3.0+USB PD in Type-C car solution line diagram of charger

            Type-C is a new generation of USB interface, positive and negative can be plugged, USB PD output voltage can provide 5V, 9V, 12V, 15V, 20V and other options, power up to 100W power, and Type-C interface is very small , So suitable for laptop, tablet to the phone, as well as a small peripheral products can be equipped. The QC3.0 is tailored for the phone, the output voltage per 200mV increments in the 3.6V to 20V voltage range, allowing the phone to select the most appropriate voltage and the ideal charge current, and thus minimize power loss , Improve charging efficiency and improve thermal performance. So friends still QC3.0 and USB PD, the introduction of a single Type-C interface output QC3.0 + USB PD two-in-one car charger, allowing users to easily on the phone, tablet and laptop charging.

                                 3-Car charger solutions-MCU-STM32F030K6 features

          The program input from the car battery cigarette holder to provide high-power power supply, through the ON and the United States of the Buck-Boost power conversion control chip NCP81239 drive power switch to regulate the output voltage and current. MCU is responsible for identifying, judging load demand and control the buck-boost power conversion chip to output the required power supply load specifications, using STM32F030K6 STM32F030K6. MCU can be directly connected to the Buck Boost IC built-in I²C bus to set the output voltage required for the load, the voltage setting per 100mV increments, beyond the required QC3.0 200mV increments. NCP81239 with four Power Mosfet switch, an inductor, and filter capacitor, according to the output voltage difference can be automatically adjusted to boost (BOOST) or buck (BUCK) architecture, output 5V ~ 20V, USB PD voltage requirements .

                   4-Car charger solutions-Type-C Controller-Fairchild FUSB302 Feature

          This program supports charging protocol support QC3.0 and USB PD, and share a Type-C interface. Type-C and USB PD protocol is through the detection of USB interface CC1 and CC2 signals, and through Fairchild's Type-C control IC FUSB302, through the I²C interface and MCU connection. QC3.0 fast charge protocol is the use of ON Semiconductor's QC3.0 control IC NCP4371 USB interface to connect the D + / D- signal. The MCU is responsible for identifying, determining, and controlling the load-up requirements of the buck-boost power conversion chip to output the required power specifications for the load.

                      5-Car charger solutions-QC3.0 HVDCP Controller-ON NCP4371 feature

                 6-Car charger solutions-Buck Boost Power Controller-ON Semi NCP81239 Feature

 

                             

 

                                 7-Car charger solution development board photo

 

* Automobile seat input interface，Input voltage：12V，

 

* Type-C Output interface，Output voltage @Max. load current：

 

． QC3.0：3.6V~12V @3A，

 

． USB PD：5V/9V/12V/15V/20V @3A

 

* Full load average efficiency：95%

 

* Automatically identify the load charging interface, QC3.0 by D + / D-recognition charging agreement, USB PD identified by the CC1 / CC2 Charging Protocol

        

 

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