Silanna Semiconductor expands multi-port fast charger reference design portfolio

8th March 2023
Harry Fowle

Silanna Semiconductor has unveiled the latest addition to its family of AnyPort fully integrated reference designs that provide everything an engineer needs to prototype and test fully functional multi-port fast charger applications rapidly.

Built around Silanna’s CO2 Smart Power advanced AC/DC controller and high-frequency DC/DC converter technology and featuring a super-junction FET, the RD-35 simplifies and speeds the development of low-energy consumption multi-port 65W fast chargers offering USB Type-A and Type-C functionality.

Silanna’s RD-35 is a high-power-density, ultra-efficient, production-ready solution for multi-port 65W USB-PD applications delivering currents up to 3.25A. Operating efficiency greater than 92% minimizes power consumption during charging, while no-load consumption of less than 300mW reduces standby power. Efficiency is relatively flat across the universal (90–265Vac) input voltage range and low-to-full-load conditions.

The RD-35 combines Silanna’s SZ1131 fully-integrated AC/DC active clamp flyback (ACF) controller and the company’s SZPL3102A high-voltage, high-efficiency integrated 65W buck converter. AnyPort architecture provides the flexibility to complete a charger design for a given power level prior to specifying and configuring the specific number and type of output ports. This allows a single base charger design to be deployed across a variety of end products with different Type-C and Type-A output configurations. Time-to-market is further reduced as the RD-35 exceeds conducted and radiated EMI requirements, eliminating the need for pre-production validation and certification.

“Manufacturers are looking to create multi-port fast chargers that address stringent performance, power density and efficiency requirements within tight time-to-market deadlines,” says Ahsan Zaman, Silanna Semiconductor’s Director of Product Marketing. “In line with our other production-ready reference designs, the combination of Silanna’s CO2 Smart Power family of advanced AC/DC and DC/DC technologies and the innovative AnyPort architecture enables engineers to reduce the time needed to develop and test 65W 1C1A multi-port designs and ensure the fastest possible route from prototyping to full production.”

The RD-35 is the latest addition to Silanna’s comprehensive family of production-ready reference designs that provide everything needed to develop high-density chargers with low operational and no-load/standby power consumption and minimum component count, BOM cost and size. This family includes all-silicon 33W and 45W solutions and silicon- and GaN-based single- and multiple-output 65W and 100W USB-PD reference designs.

Full availability of PCB Gerber and production files further reduces the time from prototyping to full production.

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