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TPS2388

ACTIVE

2-pair, type-2, 8-channel PoE PSE

Product details

Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 FET External MPS method DC Disconnect Pair control 2-Pair Alt A Operating temperature range (°C) -40 to 125 Features Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable ICUT Number of PSE ports 8 Rating Catalog
Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2 FET External MPS method DC Disconnect Pair control 2-Pair Alt A Operating temperature range (°C) -40 to 125 Features Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable ICUT Number of PSE ports 8 Rating Catalog
VQFN (RTQ) 56 64 mm² 8 x 8
  • Fully IEEE 802.3at Compliant
  • Port Re-Mapping
  • 1- and 3-Bit Fast Port Shutdown Input
  • “Never Fooled” 4-Point Detection
  • Type 1 and Type 2 PD Classification
  • Programmable Current Limit With Foldback
  • DC Disconnect Detection
  • Flexible Processor Controlled Operating Modes
    • Semiauto
    • Manual
  • 14-Bit Port Current and Voltage Monitoring
    • 100-ms Rolling Port Current Averaging
    • 2% Current Sensing Accuracy
    • 0.255-Ω Sense Resistor With Kelvin Sense
  • I2C Communication
    • I2C Watchdog for Failsafe Operation
    • 8- and 16-Bit Access Mode Selectable
  • –40°C to 125°C Temperature Operation
  • 56-Lead VQFN Package
  • Fully IEEE 802.3at Compliant
  • Port Re-Mapping
  • 1- and 3-Bit Fast Port Shutdown Input
  • “Never Fooled” 4-Point Detection
  • Type 1 and Type 2 PD Classification
  • Programmable Current Limit With Foldback
  • DC Disconnect Detection
  • Flexible Processor Controlled Operating Modes
    • Semiauto
    • Manual
  • 14-Bit Port Current and Voltage Monitoring
    • 100-ms Rolling Port Current Averaging
    • 2% Current Sensing Accuracy
    • 0.255-Ω Sense Resistor With Kelvin Sense
  • I2C Communication
    • I2C Watchdog for Failsafe Operation
    • 8- and 16-Bit Access Mode Selectable
  • –40°C to 125°C Temperature Operation
  • 56-Lead VQFN Package

The TPS2388 is an 8-channel power source equipment (PSE) controller engineered to insert power onto Ethernet cable according to IEEE 802.3at-2012 standard (or 802.3at). The PSE controller can detect powered devices (PDs) that have a valid signature, determine the power requirements according to the classification, and apply power through either one (Type -1) or two-event (Type-2) physical classification. The TPS2388 also has the flexibility to support UPoE and other non-standard loads.

The Port remapping and the device pinout allow designers to enable 2-layer PCB designs and simplify software migration from previous generation PSE devices. The external FET architecture allows designers to further balance size, efficiency, thermal, and solution cost requirements. The current foldback reduces thermal stress on the external MOSFETs during startup and overload conditions allowing the use of cheaper FETs.

The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications that require the immediate disabling of multiple ports.

The TPS2388 is an 8-channel power source equipment (PSE) controller engineered to insert power onto Ethernet cable according to IEEE 802.3at-2012 standard (or 802.3at). The PSE controller can detect powered devices (PDs) that have a valid signature, determine the power requirements according to the classification, and apply power through either one (Type -1) or two-event (Type-2) physical classification. The TPS2388 also has the flexibility to support UPoE and other non-standard loads.

The Port remapping and the device pinout allow designers to enable 2-layer PCB designs and simplify software migration from previous generation PSE devices. The external FET architecture allows designers to further balance size, efficiency, thermal, and solution cost requirements. The current foldback reduces thermal stress on the external MOSFETs during startup and overload conditions allowing the use of cheaper FETs.

The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority for applications that require the immediate disabling of multiple ports.

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Technical documentation

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Type Title Date
* Data sheet TPS2388 IEEE 802.3at 8-Channel Power-over-Ethernet PSE Controller datasheet (Rev. A) PDF | HTML 16 Aug 2017
Design guide 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applic (Rev. A) 15 Oct 2019
EVM User's guide TPS2388EVM-612: PoE, PSE, TPS2388 Evaluation Module (Rev. C) 08 May 2019
Design guide SIFOs 802.3at Conformance Report, v 4.1.05, TPS2388 23 Aug 2017
Test report University of New Hampshire Interoperability Lab Conformance Test 23 Aug 2017
Test report University of New Hampshire Interoperability Lab Interoperability Test 23 Aug 2017
Application note TPS23861 Power-On Considerations 21 Jul 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS2388EVM-612 — TPS2388 Evaluation Module for IEEE802.3at PoE PSE applications

The TPS2388EVM-612 features the octal channel, TPS2388, IEEE 802.3at PoE PSE controller. The EVM consists of a motherboard (TPS2388EVM-612) and daughter board (TPS2388EVM-016) containing one TPS2388 device. The TPS2388EVM-612 provides a multi-port base platform interface for TPS2388EVM-016, (...)
User guide: PDF
Not available on TI.com
Code example or demo

SLUC636 TPS2388 PoE MSP430 Reference Code for Basic Applications

Supported products & hardware

Supported products & hardware

Products
Power sourcing equipment
TPS2388 2-pair, type-2, 8-channel PoE PSE
Hardware development
Evaluation board
TPS2388EVM-612 TPS2388 Evaluation Module for IEEE802.3at PoE PSE applications
Code example or demo

SLUC640 TPS2388 PoE MSP430 Reference Code for Multi-Port Power Management Applications

Supported products & hardware

Supported products & hardware

Products
Power sourcing equipment
TPS2388 2-pair, type-2, 8-channel PoE PSE
Hardware development
Evaluation board
TPS2388EVM-612 TPS2388 Evaluation Module for IEEE802.3at PoE PSE applications
GUI for evaluation module (EVM)

SLUC642 TPS2388EVM GUI

Supported products & hardware

Supported products & hardware

Products
Power sourcing equipment
TPS2388 2-pair, type-2, 8-channel PoE PSE
Hardware development
Evaluation board
TPS2388EVM-612 TPS2388 Evaluation Module for IEEE802.3at PoE PSE applications
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins CAD symbols, footprints & 3D models
VQFN (RTQ) 56 Ultra Librarian

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