13W 802.3af PoEPowered Device Interface with Flyback DC/DC Converter
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The MP8004 is an integrated IEEE 802.3af PoE compliantPowered Device (PD) power supply solution. It includes a PD interface and an isolated/non-isolated flyback converter.
The PD interface includes detection and classification modes as well as a 100V output pass device. An inrush current limit is included to charge the input capacitor slowly without interruption due to die heating.
The DC/DC converter includes a 150V power switch and is capable of delivering 13W PoE power with high efficiency. It has an internal soft start and auto-retry. Also, it incorporates over-current, short-circuit, and over-voltage protection. It can also skip cycles to maintain zero load regulation.
The MP8004 supports a front-end solution for PoE-PD application with minimal external components and is available in a thermally enhanced 4mm x 6mm QFN-20 package.
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- Meets IEEE 802.3af Specifications
- 100V, 1Ω Integrated Pass Switch
- 420mA DC Input Current Limit
- 150V, 0.45Ω Integrated Switch forPowerConverter
- Cycle-by-Cycle Switching Current Limit
- Integrated 100V Start-Up Circuit
- Programmable Switching Frequency
- Duty Cycle Limiting with Line Feed Forward
- Internal Slope Compensation
- OCP, SCP, and OTP
- 4mm x 6mm QFN-20 Package
EV8004-QW-00A Evaluation Kit 13W 802.3af PoE-Powered Device Interface with Flyback DC/DC Converter Evaluation Board
The EV8004-QW-00A is an evaluation board for the MP8004, which is an integrated IEEE 802.3af PoE-compliant powered device (PD) power supply solution. It includes a PD interface and an isolated/non-isolated flyback converter.
The PD interface includes detection and classification modes, as well as a 100V output pass device. Inrush current limit is included to slowly charge the input capacitor. The DC/DC converter includes a 150V power switch, and is capable of delivering 13W output power with high efficiency. It has internal soft-start, auto-retry, over current, short circuit, and over-voltage protection. It can also skip cycles during light-load conditions.
The MP8004 is available in a thermally-enhanced QFN-20 (4mmx6mm) package.