Silanna adds 1C1A option to multi-port fast charger reference designs

The latest addition to Silanna Semiconductor’s AnyPort family of integrated reference designs provides everything needed to prototype and test fully functional multi-port fast charger applications rapidly, said the company. The RD-35 combines Silanna’s SZ1131 integrated AC/DC active clamp flyback (ACF) controller and its SZPL3102A high-voltage, high-efficiency integrated 65W buck converter. It also includes 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. 

It is a production-ready reference design for multi-port 65W USB-PD applications delivering currents up to 3.25A. Operating efficiency greater than 92 per cent minimises power consumption during charging, while no-load consumption of less than 300mW reduces standby power. Efficiency is relatively flat across the universal (90 to 265V AC) input voltage range and low-to full-load conditions.

The 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.

Silanna said that time-to-market is further reduced because the RD-35 exceeds conducted and radiated EMI requirements, eliminating the need for pre-production validation and certification of multi-port fast chargers. 

The RD-35 is the latest production-ready reference designs to develop high-density chargers with low operational and no-load/ stand-by power consumption and minimum component count, bill of material (BoM) cost and size. The family includes all-silicon 33W and 45W models and silicon- and GaN-based single- and multiple-output 65W and 100W USB-PD reference designs. 

PCB Gerber and production files are available to further reduce the time from prototyping to full production, said Silanna.  

Silanna Semiconductor’s AC/DC and DC/DC power converter ICs are used in travel adapters, laptop adapters, appliance power, smart metering, computing, lighting, industrial power and display power using digital and analogue control and device technologies. Customers are supported by a worldwide engineering sales force and by regional design centers and online tools.

The company’s Power Density Hero is an online design tool where customers input their power needs and instantly receive a complete design, schematic, and BoM. 

Silanna Semiconductor is headquartered in San Diego, California, USA. The privately-held semiconductor company has global facilities supporting customers with design centres and offices in North America, Europe, Asia, and Australia.

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