TPS23758

www.ti.com TPS23758 SLVSDW3A – APRIL 2019 – REVISED NOVTEMPBSE2R32705280 SLVSDW3A – APRIL 2019 – REVISED NOVEMBER 2020 TPS23758 IEEE 802.3at PoE PD with No-Opto Sync Flyback DC-DC Controller 1 Features Complete IEEE 802.3at PD solution for type 1 PoE – Ethernet Alliance (EA) logo certified designs available – Robust 100-V, 0.36-Ω (typ) hotswap MOSFET Integrated PWM controller with 0.77-Ω (typ) 150-V power MOSFET – Flyback controller with PSR Supports CCM operation with secondary side synchronous FET— multi-outputs ±1% (typ, 5-V Output) Load regulation (0-100% load range) — with Sync FET – Supports low-side switch buck topology – Adjustable switching frequency with synchronization – Soft-start control with advanced startup – Programmable slew rate and frequency dithering for enhanced EMI reduction Primary adapter priority input –40°C to 125°C Junction temperature range Small 6-mm x 4-mm VSON package 2 Applications IEEE 802.3at compliant powered devices VoIP phones Security cameras IP phones Access points Simplified Application 3 Description The TPS23758 device combines a Power over Ethernet (PoE) powered device (PD) interface, a 150V switching power FET, and a current-mode DC-DC controller optimized for flyback topology. The high level of integration along with primary side regulation (PSR), spread spectrum frequency dithering (SSFD), and advanced startup makes the TPS23758 an ideal solution for size-constrained applications. The PoE implementation...