Texas Instruments

TPS2372 High-Power PoE Powered Device (PD) Interface

Texas Instruments' TPS2372 IEEE 802.3bt PoE high-power PD interface with automatic MPS and autoclass

Image of Texas Instruments' TPS2372 High-Power PoE Powered Device (PD) InterfaceTexas Instruments' TPS2372 contains all the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2372-4 to support high power applications up to 90 W and 60 W, respectively. Assuming 100 meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

The TPS2372 operates with enhanced features.

The automatic maintain power signature (MPS) function enables applications requiring very low power standby modes. The TPS2372 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.

The TPS2372 also implements a delay function to allow the remote PSE to complete its inrush phase before releasing the power good (PG) output. This ensures that the IEEE802.3bt (draft) startup requirements are met.

The Autoclass enable input also allows advanced system power optimization modes compliant with IEEE802.3bt (draft) standard.

Features
  • IEEE 802.3bt (draft) PD solution for Type 3 or Type 4 PoE
  • Supports power levels for Type-4 (TPS2372-4) 90 W operation
  • Robust 100 V hot swap MOSFET
    • TPS2372-4 (typ.): 0.1 Ω, 2.2 A current limit
  • PG output with inrush completion delay
    • Compliant to PSE inrush
  • Allocated power indicator outputs
  • Automatic maintain power signature (MPS)
    • Auto-adjust MPS for Type 1-2 or 3-4 PSE
    • Supports ultra-low power standby modes
  • Supports autoclass operation
  • Supports PoE++ PSE
  • -40°C to +125°C junction temperature range
  • 20-lead VQFN package
Applications
  • IEEE 802.3bt (draft) compliant devices
  • Lighting
  • Power modules
  • Dual signature PD/forced UPOE
  • 4PPOE
  • Pass-through system
  • Security cameras
  • Multiband access points
  • Pico-base stations

TPS2372 High-Power PoE Powered Device (PD) Interface

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC POE CNTRL 1 CHANNEL 20VQFNTPS2372-4RGWTIC POE CNTRL 1 CHANNEL 20VQFN8551 - Immediate$4.46View Details
IC POE CNTRL 1 CHANNEL 20VQFNTPS2372-4RGWRIC POE CNTRL 1 CHANNEL 20VQFN4352 - Immediate$3.14View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
EVAL BOARD FOR TPS2372TPS2372-4EVM-006EVAL BOARD FOR TPS237216 - Immediate$178.80View Details
Published: 2018-02-21

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