Synchronous rectification control chip can improve power supply efficiency

With the improvement of environmental awareness, under the active promotion of government regulations in many countries, electronic products have increasingly stringent requirements for power supply specifications. The continuous improvement of power density has put higher and higher requirements on secondary rectification of power supply. Rectification devices have evolved from the initial Schottky tube rectification to the use of synchronous rectification switch tubes to replace diodes to reduce power consumption.

Synchronous rectification is a new technology that uses a dedicated power MOSFET with extremely low on-resistance to replace the rectifier diode to reduce rectification loss. It can greatly improve the efficiency of the DC/DC converter and there is no dead zone voltage caused by the Schottky barrier voltage. Power Mosfet is a voltage-controlled device, and its volt-ampere characteristic is linear when it is turned on. When using power MOSFET as a rectifier, the gate voltage must be synchronized with the phase of the rectified voltage to complete the rectification function, so it is called synchronous rectification.

Pengyuan Electronics is a professional agent of electronic parts for new energy products, committed to providing customers with one-stop professional services. The company has a group of experienced engineers and has good cooperative relations with many research institutions. It can provide customers with value-added services such as component selection and complete solution provision. Since its establishment, the company's turnover and organization have continued to grow. It has established offices in Hong Kong, Shenzhen, Beijing and Shanghai to fully serve domestic power electronics companies.

In order to meet customers' high-end and high power density requirements, Pengyuan Electronics is committed to providing highly competitive synchronous rectification solutions. The synchronous rectification control chip using the patented technology of Qingli Technology, combined with IXYS's dedicated synchronous rectification Trench MOSFET, can improve power efficiency by 2% to 8%.

QINGLI Technology has a number of US patents for synchronous rectification power management ICs, and its synchronous rectification technology has taken the lead among world-class power management design companies. QINGLI uses the synchronous rectification patent on the secondary side of AC/DC as its core technology to achieve the ideal of high-performance power supply and maximize the efficiency of AC/DC. Its synchronous rectification IC is currently the only synchronous rectification control IC in the world that can use both CCM and DCM modes at the same time.

IXYS is a leading US semiconductor manufacturer listed on NASDAQ. The company is committed to the research and development and production of power semiconductor products that improve efficiency and reduce energy consumption. Its products are highly respected by the industry for their high reliability and high performance. The Trench Mosfet developed for synchronous rectification has an on-resistance Rds(on) as low as 1mΩ. Using the QINGLI synchronous rectification IC and IXYS's low on-resistance MOS can maximize the efficiency of the system power supply.

Forward Power Supply Solutions

Because QINGLI adopts its patented dead zone control technology, its control IC can easily cope with the complex control requirements of DCM and CCM of forward power supply, and increase the reliability of power supply and reduce the complexity of power supply design.

This solution can be applied to PC power supplies, server power supplies, lead-acid battery chargers and other power supplies. It can easily help customers improve power efficiency and power density while reducing design costs to meet the latest energy efficiency standards.

Flyback Power Supply Solutions

The pre-detection and dv/dt patented technologies owned by QR Power Technology enable the Flyback application to be used not only in the DCM working mode of QR, but also in the CCM working mode. Due to the programmable control of the dead time, it can safely work in the CCM working mode, thus solving the problem of false operation caused by energy backflow of the output electrolytic capacitor in this working mode.

This application solution can meet the needs of customers for high-efficiency adapters, such as notebook power supplies, LED power supplies and other low-voltage and high-current output adapters.

Qingli Technology has a complete range of products that can not only meet the application of forward, flyback and other power supplies, but also meet the application of LLC and full-bridge circuits.