On March 18, 2025, Da Da Da Lian Holdings, an internationally leading semiconductor component distributor dedicated to the Asia Pacific market, announced that its subsidiary Youshang has launched a 140W PD3.1 GaN charger solution based on Dior AP3306, APR3401, and AP43771H controllers.

Nowadays, high-power fast charging technology for smart devices has become a common focus of consumer attention. In this context, gallium nitride, as an emerging semiconductor material, is gradually becoming a new favorite in the field of fast charging due to its excellent energy conversion efficiency, fast response capability, and low thermal loss characteristics. At the same time, the release of the USB PD3.1 protocol has elevated charging efficiency to a new level. This protocol not only significantly improves charging power, but also introduces multiple voltage levels, making fast charging technology more flexible and versatile, thus meeting the charging needs of various smart devices. In view of this trend, Da Da Da Da You Shang has launched a 140W PD3.1 GaN charger solution based on the Dior AP3306, APR3401, and AP43771H controllers, using a patented ACF topology to meet DOE VI and COC Tier 2 efficiency requirements. And the solution supports PD3.1 function and AVS 28V, with a step size of 100mV, which can reduce the overall BOM cost.

This scheme consists of three main controllers: AP3306, APR3401, and AP43771H. Among them, AP3306 is a highly integrated active clamp flyback (ACF) controller, mainly designed for offline power optimization, which can meet the needs of ultra-low standby power consumption, high power density, and comprehensive protection. APR3401 is a secondary side synchronous rectification (SR) controller that can be used as a rectifier in synchronous secondary side MOSFET driver DCM operation, effectively reducing the power consumption of the secondary side rectifier and providing high performance for the scheme.

AP43771H is a protocol decoder responsible for connecting USB Type-C devices? The charging device (DUC) matches the relevant charger capacity and requests, and adjusts the feedback network of the charger to meet the voltage and current requirements of the DUC. In addition, the scheme also uses gallium nitride (GaN) FET to further improve charging efficiency and thermal performance.

Dior is an advanced semiconductor manufacturer and supplier in the industry, providing high-quality semiconductor products for the consumer electronics, computing, communications, industrial, and automotive markets. This time, the Dalian University of Technology has developed a 140W PD3.1 GaN charger solution based on Dior products, which has high cost-effectiveness and high power density, and can help manufacturers quickly complete the design of high-power fast charging products.

Core technological advantages:

Main features of AP3306:

Active clamp flyback topology with the function of recovering leakage energy and zero voltage switching;

High voltage startup, embedded VCC LDO for VCCL pin, can ensure a wide range of output voltage;

Maintain a constant low output current in the event of an output short circuit;

Silent noise quasi resonant control;

Soft start during the startup process, frequency reversal to achieve high average efficiency;

Secondary winding short-circuit protection with FOCP, used to reduce frequency jitter of EMI and X-CAP discharge function;

Useful pin fault protection: SENSE pin floating protection/FB/optocoupler open/short circuit protection;

Comprehensive system protection function: VOVP/OLP/BNO/SOVP/SSCP。

Main features of APR3401:

Synchronous rectification is suitable for DCM/QR/ACF operating modes;

Eliminate resonance ringing interference;

Use minimal external components.

Main features of AP43771H:

Support USB PD Rev 3.1 for OTP of MTP main firmware used for system configuration;

Operating voltage range: 3.3V to 28V for built-in voltage regulators used for CV and CC control;

Programmable OVP/UVP/OCP/OTP, supporting power-saving mode;

External N-MOSFET control for VBUS power supply;

Support e-Marker cable testing for W-DFN3030-14 packaging.

Scheme specifications:

Main power specifications:

Input voltage: 90Vac~264Vac;

Input standby power:< 80Mw；

Main outputs: 5V/3A, 9V/3A, 15V/3A, 20V/3A, 28V/5A;

Efficiency: DOE VI and COC Tier 2;

Maximum output supported: 140W PD3.1;

Protection: OCP、VP、UVP、OLP、OTP、SCP；

Size:

PCB：84mm×55mm×23mm；

Case：88mm×59mm×27mm；

Power density index: 1W/CC.

Regarding Dahua University Holdings:

Da Da Da Da Da Holdings is an internationally leading semiconductor component distributor dedicated to the Asia Pacific market. It was founded in 2005 and celebrates its 20th anniversary this year. Headquartered in Taipei, it has subsidiaries such as Shiping, Pinjia, Quanding, and Youshang, with approximately 5000 employees and over 250 authorized product suppliers. It has 69 service centers worldwide and achieved a revenue of NT $8805.5 billion in 2024. Dahua University has established an industrial holding platform, focusing on international operational scale and localized flexibility, and has long been deeply rooted in the Asia Pacific market. With the vision of "industry first choice - channel benchmark", it fully implements the core values of "team, integrity, professionalism, and efficiency", and has won the "Global Distributor Excellence Performance Award" for 24 consecutive years. At the same time, it continues to strengthen ESG sustainable development and has won international recognition for 3 consecutive years, with an MSCI ESG rating of A-level. Faced with the trend of new manufacturing, Dalian University is committed to transforming into a data-driven enterprise, establishing an online digital platform - "DaDaWang", and advocating the intelligent logistics service (LaaS, Logistics as a Service) model to assist customers in facing the challenges of intelligent manufacturing together. Starting from benevolence, building trust through technology, and adhering to the corporate purpose of "co creating partner value and achieving the future", Da Da Da Da Da hopes to build a highly competitive ecosystem with the industry "La Bang Jie Pai".