Akros Silicon SoC with Integrated Digital Isolation Supports 60W and 90W PoE Applications

This unique single-package solution offers benefits not provided by existing solutions, including higher efficiency and reliability as well as dramatic reductions in system costs and board real estate.

The AS1860 SoC offers the following one-of-a-kind features:
• Dynamic power-level adjustment (to 60W and above) without using optocouplers and their associated complex compensation networks
• Higher power conversion efficiency due to communication across the isolation barrier
• More accurate output-voltage sensing using a resistor-divider sensor on the secondary side

All other existing approaches to higher power (60W and above) PoE deployments require multiple components, such as two or three power management ICs, several optocouplers and custom transformers. In addition to adding component cost, consuming board space and increasing design complexity, these approaches are vulnerable to shoot-through issues and losses due to rectifier diode and reverse recovery. In contrast, Akros’ approach can accommodate 60W and above PoE applications using just two components: one AS1860 SoC and one external FET. Moreover, by integrating GreenEdge digital isolation, the AS1860 enables the implementation of many advanced diagnostic and high-voltage telemetry features that allow operators to remotely manage power, which in turn enhances reliability and energy efficiency.

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“The rapidly approaching 60W and above PoE deployments are expected to transform next-generation enterprise workspaces,” said Parviz Ghaffaripour, CEO of Akros Silicon. “Thanks to Akros’ patented GreenEdge technology that enables seamless communication between the primary and secondary power domains, our new AS1860 offers systems designers the most robust, energy-efficient and cost-effective solution for higher power PoE applications.”

The AS1860 SoC is offered in a RoHS-compliant, 64-pin 9x9 QFN package. It is in full production and priced starting at $4.69 per unit in 3K quantities.