PD70211 Datasheet | Microchip Technology

PD Controller with Switching Regulator for AF/AT/UPOE/ HDBase T/4-pair Po E 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 Po E applications. It supports IEEE® 802.3af, IEEE 802at, HDBase T, 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. The IC 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, HDBase T, and other 2-pair/4-pair configurations - Wall adapter support (Rear Aux method) - PD detection and programmable classification - 2, 3, 4, and 6 event classification - Integrated 0.3 Ω isolating (series-pass) FET - Inrush current limiting - Less than 10 µA offset current during detection - Advanced PWM section - Lead-free QFN-36 (6 mm × 6 mm) package © 2021 Microchip Technology Inc. and its subsidiaries DS00003672B-page 1 The following table lists the Microchip PD products offerings. Table 1. Microchip Powered Device Products Offerings Part Type Package PD70100 Front end PD70101 Front end + PWM PD70200 Front end PD70201 Front end + PWM PD70210 Front end PD70210A Front end PD70210AL Front end PD70211 Front end + PWM PD70224 Ideal Diode Bridge 3 mm × 4 mm 12L DFN 5 mm × 5 mm 32L QFN 3 mm × 4 mm 12L DFN 5 mm × 5 mm 32L QFN 4 mm × 5 mm 16L DFN 4 mm × 5 mm 16L DFN 5 mm × 7 mm 38L QFN 6 mm × 6 mm 36L...