IEEE 802.3at PoE High-Power PD Interface with AUX Control - TPS2378

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

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Parametrics Compare all products in Powered Device

 
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
Special Features
Package Group
Package Size (mm2=WxL)
Approx. Price (US$)
Pin/Package
TPS2378 TPS2379
0     0    
57     57    
850     850    
140     140    
420     420    
802.3at Type 1 (802.3af)
802.3at Type 2    
802.3at Type 1 (802.3af)
802.3at Type 2
Non Standard    
25W     25W
>25W    
PD Only     PD Only    
Auto Retry     Auto Retry    
PG
Thermal Shutdown    
Thermal Shutdown    
SO PowerPAD     SO PowerPAD    
8SO PowerPAD: 29 mm2: 6 x 4.9     8SO PowerPAD: 29 mm2: 6 x 4.9    
0.65 | 1ku     1.00 | 1ku    
8SO PowerPAD     8SO PowerPAD