Texas Instruments TPS23751 IEEE 802.3at PoE Interface and Green-mode DC/DC Controller TPS23751PWPR

The TPS23751 is a 16-pin integrated circuit designed as a Power-over-Ethernet (PoE) powered device interface and a current-mode DC-DC controller, optimized for high efficiency across a wide load range. It complies with IEEE 802.3at standards, supporting up to 25.5 W for powered devices (PDs). The device features a robust 100 V, 0.5 Ω hotswap MOSFET to minimize heat dissipation and enhance power utilization. It includes an auxiliary power detect (APD) input and a disable function for added flexibility in design. The DC-DC controller incorporates internal soft-start, current-mode control with slope compensation, and current limiting. Efficiency is improved at light loads by disabling synchronous rectification and utilizing variable frequency operation. The operating temperature range is from -40°C to 125°C, making it suitable for various applications, including video and VoIP telephones, multiband access points, security cameras, and pico-base stations. The TPS23751 is packaged in a PowerPAD,Ñ¢ TSSOP format, facilitating thermal management in compact designs.