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SoC energy management IC supports 60W PoE apps

05 Apr 2013  | Steve Taranovich

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Akros Silicon has recently debuted the latest member of its GreenEdge family of SoC energy management IC. The AS1860 is equipped with the company's proprietary GreenEdge digital isolation technology. It is suited to support deployments of 60W and above Power over Ethernet (PoE) Powered Device (PD) applications such as thin clients, monitors, industrial Ethernet, IPTV, building management, Industrial Networking and many other high power designs.

This single-package solution offers high efficiency and reliability as well as low system costs and board real estate.

comparison

Figure 1: Significant board footprint reductions are achieved by the Akros SoC.

The solution SoC offers the following features:

  • -Dynamic power-level adjustment (to 60W and above) without using opto-couplers 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

Other existing approaches to higher power (60W and above) PoE deployments require multiple components, such as two or three power management ICs, several opto-couplers 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. 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.

60W and above PoE deployments are coming soon and are expected to transform next-generation enterprise workspaces.

Why 60W PoE?

PoE

Figure 2: 60W PoE advantages are obvious.

60W PoE applications
The thin client

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Figure 3: A thin client approach is now easily achievable.

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

Visit Akros website at www.akrossilicon.com

- Steve Taranovich
  EDN




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