On September 17, 2025, Da Da Da Da Da Holdings, an internationally leading semiconductor component distributor dedicated to the Asia Pacific market, announced that its subsidiary Youshang has launched a synchronous buck converter solution based on the MPQ8633A chip of the Core Source System (MPS).

Figure 1- Display board of the synchronous buck converter scheme based on MPS products by Da Da Da You Shang

With the large-scale deployment of 5G networks, the surge in data center traffic, and the explosive growth of IoT terminals, the global communication infrastructure continues to upgrade and expand. In order to meet the stringent requirements for power performance of communication equipment in high-speed data transmission, massive data processing, and large-scale terminal connection scenarios, Da Da Da You Shang has launched a synchronous buck converter solution based on the MPS MPQ8633A chip, aiming to help customers cope with complex power supply challenges and significantly improve system energy efficiency and reliability.

Figure 2- Scene application diagram of synchronous buck converter scheme based on MPS products by Da Da Da You Shang

MPQ8633A is a fully integrated high-frequency synchronous buck converter. It provides a very compact solution that can achieve up to 12A output current over a wide input power supply range, and has excellent load and line regulation performance, enabling efficient operation over a wide output current load range. Meanwhile, MPQ8633A adopts an internally compensated constant on-time (COT) control mode, which can provide fast transient response and simplify loop stability. This device can be set to a constant switching frequency (fSW) of 600kHz, 800kHz, or 1000kHz through MODE, unaffected by input and output voltages.

Moreover, MPQ8633A controls the startup ramp of the output voltage (VOUT) through an internal 1ms timer. The value of this timer can be increased by adding a capacitor to TRK/REF. And MPQ8633A provides a normal signal for the open drain power supply to indicate whether the output is within its nominal voltage range. In terms of security, the product integrates multiple protection functions, including overcurrent protection (OCP), overvoltage protection (OVP), undervoltage protection (UVP), and over temperature protection (OTP). In addition, to further save circuit board area, MPQ8633A minimizes the need for external components and offers two packaging options, QFN-20 (3mm × 4mm) and QFN-21 (3mm × 4mm), making it convenient for users to choose.

Figure 3- Block diagram of the synchronous buck converter scheme based on MPS products by Da Da Da You Shang

The synchronous buck converter solution launched this time fully demonstrates the close collaboration and profound technological accumulation between Dalian University and MPS in empowering innovation in communication power supply. In the face of the continuously evolving demand for communication infrastructure, Dalian University will continue to work with original factory partners to provide more advanced and efficient power solutions, empowering communication infrastructure construction from the underlying technology.

Core technological advantages:

Wide input voltage range of 2.7V:

2.7V to 16V with external 3.3V VCC bias;

4V to 16V with internal bias or external 3.3V VCC bias.

Remote detection with differential output voltage;

Adjustable precise current limit;

12A output current;

Low Rds (on) integrated power MOS;

Proprietary switch loss reduction technology;

Adaptive COT to achieve ultra fast transient response;

Stable use of zero ESR output capacitors;

0.5% reference voltage within the junction temperature range of 0 ℃ to 70 ℃;

-1% reference voltage within the junction temperature range of 40 ℃ to 125 ℃;

You can choose Skip or Forced CCM working mode;

Having excellent load adjustment rate;

PGOOD active clamp low level during power failure;

Programmable soft start time, starting from 1 millisecond;

Optional switching frequencies of 600kHz, 800kHz, and 1000kHz;

Having Non Patch OCP, UVP, UVLO, Thermal Shutdown, and Latch Off for OVP;

The output can be adjusted within the range of 0.6V to 90% Vin, with a maximum of 5.5V;

Adopting QFN 3mm × 4mm packaging.

Scheme specifications:

A 16V, 12A synchronous buck converter with adjustable voltage, frequency, and current limits.

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 67 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 becoming the "industry's preferred 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 and MSCI ESG rating of A for 3 consecutive years. Faced with new manufacturing trends, Dalian University is committed to transforming into a data-driven enterprise and advocating for the 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".

About The Author

This is reported by Top Components, a leading supplier of electronic components in the semiconductor industry

They are committed to providing customers around the world with the most necessary, outdated, licensed, and hard-to-find parts.

Media Relations

Name: John Chen

Email: salesdept@topcomponents.ru

This is reported by Top Components, a leading supplier of electronic components in the semiconductor industry. They are committed to p with the most necessary, outdated, licensed, and hard-to-find parts.

Media Relations Name: John Chen

Email: salesdept@topcomponents.ru