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PD70211 - PD Controller

General Description

2.

Electrical Specifications 7 2.1.

Absolute Maximum Ratings7 2.2.

Key Features

  • an internal bleeder for discharging the input capacitor of the DC/DC converter rapidly to ensure fast re-detection and port power-up, in case of a sudden removal and re-insertion of the Ethernet cable into the RJ-45. The advanced PWM current-mode section supports synchronous Flyback and Active Clamp Forward topologies, as well as Buck, Boost, and so on. Features The PD70211 device has the following key features.
  • Supports IEEE 802.3af/at, HDBaseT, and other 2-pair/4-pair configurations.

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Full PDF Text Transcription (Reference)

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PD70211 PD Controller with Switching Regulator for AF/AT/UPOE/ HDBaseT/4-pair PoE Applications Product Overview Microchip's PD70211 is an advanced PD interface IC with integrated switching Pulse-Width Modulation (PWM) regulator control for powered devices in PoE applications. It supports IEEE® 802.3af, IEEE 802at, HDBaseT, and general 2/4-pair configurations. The PD70211 front-end includes an advanced classification block that supports 2, 3, 4, and 6 event classification. Using the SUPP_Sx pins, it also identifies the four pairs of cable that actually receive power and generate appropriate flags.