PD70211 Datasheet | Microsemi

PD Controller with Switching Regulator for AF/AT/UPOE/HDBase T/4-pair Po E Applications f Description PD70211 is an advanced PD Interface IC with integrated switching (PWM) regulator control for Powered Devices in Po E applications. It supports IEEE802.3af, IEEE802at, 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 which of the four pairs of the cable actually receives power and generates appropriate flags. The IC Features an internal bleeder for discharging the input capacitor of the DC/DC converter rapidly, so as to ensure fast re-detection and port power-up in case of sudden removal and re-insertion of the Ethernet cable into the RJ-45. The advanced PWM currentmode section supports synchronous Flyback and Active clamp Forward topologies, as well as Buck, Boost etc. Features  Supports IEEE802.3af/at, HDBase T and other 2pair/4-pair configurations  Wall-adapter support (Rear Aux method)  PD detection & programmable classification  2,3,4, and 6 event classification  Integrated 0.3Ω isolating (series-pass) FET  Inrush current limiting  Less than 10µA offset current during detection  Advanced PWM section  Lead-free MLPQ-36 (6 × 6 mm) package Applications  HDBase T up to 95 Watts  IEEE802.3af and 802.3at  Power Forwarding  Indoor and outdoor Po E . VPort P1 VPort N1 VPort P2 VPort N2 Copyright © 2016 Rev. 1.4, July 2017 BOOST CONVERTER (FOR 0.6A, Po E Applications) STAND-ALONE PD SOLUTION FOR POWER FORWARDING 120µH/1.5A 3A/80V 57V/0.6A SUPP_S1 SUPP_S2 0.1µF/100V SMAJ58A 10µF/ 25V 0.1µF/ 25V 0.1µF/10V VCC 0.1µF/10V 0.1µF/10V...