I met the talented Silanna team at APEC 2019 (Image courtesy of Loretta Taranovich)
The company’s claim to fame is a fully integrated Active Clamp FLyback Controller. Their SZ1101 as a UHV startup LDO and a Digital control design with an adaptive active clamp driver.
SZ1101 back side of PC board—an all-Silicon design, including a standard Silicon MOSFET, with a power density of more than 15W/in3 at 30W. The IC has an input that can handle 90-265 VAC (Image courtesy of Loretta Taranovich)
Front side of PC board—you don’t see any heatsinks here due to the efficiency of the design architecture. This board will not heat up a power adapter case with its 93% efficiency @ 9V/3A. (Image courtesy of Silanna)
The SZ1101 Flyback PWM Controller integrates these four key parts of the circuit architecture for AC/DC Power Adapters for a high-power density architecture. Lower cost transformers, SR FET, clamp cap, and input filter make for a small/low cost design needed in power adapters. (Image courtesy of Silanna)
I see more to come from this ten-year-old company that started out in RF. The future focus is on power management with improved performance, higher power, higher frequency, and a whole range of DC/DC products coming soon in the next few quarters with the ZqFET.
Their ZqFET technology is a switching technology power device and process developed by Silanna Semiconductor. These devices are 5v to 40V range and have very low gate charge and low parasitic capacitances that enable high efficiency, hard-switching DC/DC conversion products. The power devices are planar and enable integration of multiple power devices with logic devices for gate driver and controller blocks. This architecture is easily integrated into new designs. Silanna will be expanding families of Power Blocks like monolithic Power Stages and complete Point-of-Load (PoL) converters, DC/DCs, Buck and Boost converters soon over the next few quarters.