Overview
A Power-over-Ethernet hub designed for distributed sensor network infrastructure in building automation, industrial monitoring, and smart campus deployments.
- Multi-port IEEE 802.3af/at compliant PoE output with per-port power monitoring and budget control.
- Embedded processor for network management functions including SNMP, VLAN, and web configuration.
- High-efficiency synchronous buck-boost power regulators optimized for standard PoE ranges.
- 19-inch rack-mount chassis design optimized for continuous full-load server room operations.
- Watchdog-supervised power cycling for remote hardware reset of attached sensor nodes.
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Challenge
Integrating high-efficiency IEEE 802.3bt Power over Ethernet delivery with a high-density IoT network coordinator on a compact board.
Solution
Designed an isolated flyback DC-DC converter stage with active clamp rectification, combined with EMI shielding for the RF module.
Outcome
Provided up to 60 W power delivery with 92% conversion efficiency, running cool inside a fanless enclosure.