TPS2378 IEEE 802.3at PoE High-Power PD Interface with AUX Control | TI.com

TPS2378 (ACTIVE)

IEEE 802.3at PoE High-Power PD Interface with AUX Control

 

Description

This 8-pin integrated circuit contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD). The low 0.5-Ω internal switch resistance, combined with the enhanced thermal dissipation of the PowerPAD™ package, enables this controller to continuously handle up to 0.85 A. The TPS2378 features an auxiliary power detect (APD) input, providing priority for an external power adapter. It also features a 100-V pass transistor, 140-mA inrush current limiting, type-2 indication, auto-retry fault protection, and an open-drain power-good output.

Features

  • IEEE 802.3at Type-2 Hardware Classification with Status Flag
  • Adapter Priority Input
  • DC/DC Converter Enable
  • Robust 100 V, 0.5-Ω Hotswap MOSFET
  • Operating Current up to 850 mA
  • 1-A (Typical) Operating Current Limit
  • 15 kV and 8 kV System-level ESD Capability
  • PowerPAD HSOP Package

All trademarks are the property of their respective owners.

Parametrics

Compare all products in Powered devices Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) PoE current limit (Min) (mA) PoE inrush limit (Typ) (mA) rDS(on) per FET (Typ) (mOhms) PoE standards supported PD power level DC/DC control Fault response Features Package Group Package size: mm2:W x L (PKG)
TPS2378 Order now 0     57     850     140     420     802.3at Type 1 (802.3af)
802.3at Type 2    
13W
25W    
PD Only     Auto Retry     PG
Primary Side Adapter Priority
Thermal Shutdown    
SO PowerPAD | 8     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS2379 Order now 0     57     850     140     420     802.3at Type 1 (802.3af)
802.3at Type 2
Non Standard    
13W
25W
>25W    
PD Only     Auto Retry     Thermal Shutdown     SO PowerPAD | 8     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)