802.3AF/AT POE PD INTERFACE W/I FLYBACK

The MP8008 is an integrated, IEEE, 802.3af/at, PoE-compliant, powered device (PD), power supply converter. The MP8008 includes PD interface and a peak-current-mode flyback controller.The PD interface has all the functions of IEEE 802.3af/at, including detection, 1-event and 2- event classification, 120mA inrush current limit, 840mA operation current limit, and a 100V hotswap MOSFET.The flyback PWM controller can drive an external MOSFET capable of handling more than 10A of current for high-powered flyback PoE applications. Pulse-skipping mode function improves efficiency in light-load condition. The MP8008 flyback features protections including overload protection (OLP), short output, and over-voltage protection (OVP).The MP8008 can support a front-end solution for PoE PD applications with minimum external components and is available in a QFN-28 (4mmx5mm) package.

• Compatible with 802.3af/at Specifications
• 100V, 0.48O, PD Integrated Pass Switch
• 120mA PD Inrush Current
• 840mA PD Operation Current Limit
• Auxiliary Adapter O-Ring Power Supply
• PD Power Good and Type-2 PSE Indicator
• 12V, 1A, Flyback MOSFET Gate Driver
• Pulse-Skipping Operation in Light Load
• Programmable Switching Frequency: 30kHz - 400kHz
• Frequency Synchronizing from 80kHz - 400kHz
• Cycle-by-Cycle Current Limit
• Overload, Short Circuit, Over-Voltage, and Thermal Protection
• Available in a QFN-28 (4mmx5mm) Package