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TPS23841 Status: ACTIVE

High Power Wide Voltage Range Quad Port Ethernet Power Sourcing Equipment Manager

      
         
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 TPS2384 TPS23841
No. of Outputs4  4  
Adjustable Current Limit(Min)(A) 0.571  
Vin(Min)(V) 34  
Vin(Max)(V) 57  
rDS(on) per FET(Typ)(mOhms) 1300  
Approx. Price (US$) 5.10 | 1ku   8.05 | 1ku  
RatingCatalog  Catalog  
Pin/Package64HTQFP  64HTQFP  
Operating Temp Range(Celsius)-40 to 125  -40 to 125  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS2384: Quad Ethernet Power Sourcing Equipment Power Manager
  • TPS2376-H: IEEE 802.3af PoE HIGH POWER PD CONTROLLER
  • TPS51116: DDR1, DDR2, DDR3 Switcher and LDO
  • TPS2051B: Single, Current-Limited, Power-Distribution Switch

Product Information

Features

  • Quad-Port Power Management With Integrated Switches and Sense Resistors
  • High Power PoE up to 25 W at PD Input Operating from a 53-V Minimum Input Power Rail
  • Wide Range Single Supply: 21.5 V up to 57 V
  • ICUT = 615 mA, ILIM = 650 mA Nominal
  • IEEE 802.3af Compatible
  • Individual Port 15-bit A/D Converters
  • Auto, Semi-Auto and Power Management Modes
  • Controlled Current Ramp Power-Up/Down for EMI Reduction
  • Over-Temperature Protection
  • DC Disconnect Detection, Supports AC Disconnect
  • High-Speed 400-kHz I2C Interface
  • Supports Legacy PD Detection
  • PowerPAD™ Package
  • Comprehensive Power Management Software Available for MPS430 Microcontroller
  • APPLICATIONS
    • Medical/Industrial Applications at 24 V
    • High Power Ethernet Enterprise Switches
    • SOHO Hubs, Ethernet Hubs
    • Ethernet High Power Mid-Spans
    • High Power PSE Injectors

PowerPAD is a trademark of Texas Instruments.

Description

The TPS23841 is a high-power, wide voltage range, quad-port sourcing equipment manager. The TPS23841 can provide up to 570 mA per port over a wide temperature range (-40°C to +125°C). Each port may operate from 21.5 V up to 57 V. The integrated output eliminates two external components per port (MOSFET and sense resistor) and survives 100-V transients. Four individual 15-bit A/D converters are used to measure signature resistance, voltage, current and die temperature, resulting in a simple and robust PSE solution. The TPS23841 comes with a comprehensive software solution to meet the most demanding applications which can serve as a core for all PoE system designs.

The TPS23841 has three internal supply buses (10 V, 6.3 V and 3.3 V) generated from the 48-V input supply. These supplies are used to bias all internal digital and analog circuitry. Each supply has been brought out separately for proper bypassing to insure high performance. The digital supply (3.3 V) is available for powering external loads up to 2 mA. For more demanding loads it is highly recommended to use external buffers to prevent system degradation. When the TPS23841 is initially powered up an internal Power-on-Reset (POR) circuit resets all registers and sets all ports to the off state to ensure that the device is powered up in a known safe operating state.

The TPS23841 has three modes of operation; auto mode (AM), semi-auto mode (SAM) and power management mode (PMM).

  • In auto mode the TPS23841 performs discovery, classification and delivery of power autonomously to a compliant PD without the need of a micro-controller.
  • In semi-auto mode the TPS23841 operates in auto mode but users can access the contents of all read status registers and A/D registers through the I2C serial interface. All write control registers are active except for D0 through D3 of port control register 1 (Address 0010) for limited port control. The semi-auto mode allows the TPS23841 to detect valid PD's without micro-controller intervention but adds a flexibility to perform power management activities.
  • Power management mode (with a micro-controller) allows users additional capabilities of discovering non-compliant (legacy) PDs, performing AC Disconnect and advanced power management system control that are based on real time port voltages and currents. All functions in this mode are programmed and controlled through read/write registers over the I2C interface. This allows users complete freedom in detecting and powering devices. A comprehensive software package is available that mates the power of the TPS23841 with the MSP430 micro-controller.

TPS23841 integrated output stage provides port power and low-side control. The internal low-side circuitry is designed with internal current sensing so there are no external resistors required. The output design ensures the power switches operate in the fully enhanced mode for low power dissipation.

The I2C interface allows easy application of opto-coupler circuitry to maintain Ethernet port isolation when a ground based micro-controller is required. The TPS23841 five address pins (A1-A5) allow the device to be addressed at one of 31 possible I2C addresses. Per-port write registers separately control each port state (discovery, classification, legacy, power up, etc) while the read registers contain status information of the entire process along with parametric values of discovery, classification, and real-time port operating current, voltage and die temperature.

The proprietary 15-bit integrating A/D converter is designed to meet the harsh environment where the PSEPM resides. The converter is set for maximum rejection of power line noise allowing it to make accurate measurements of line currents during discovery, classification and power delivery for reliable power management decisions.

The TPS23841 is available in either 64-pin PowerPAD™ down (PAP) or 64-pin PowerPAD up (PJD) packages.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS23841PAPACTIVE-40 to 1258.85 | 1kuHTQFP (PAP) | 64 View 160 | JEDEC TRAY (5+1) Purchase Samples
TPS23841PAPG4ACTIVE-40 to 1258.85 | 1kuHTQFP (PAP) | 64 View 160 | JEDEC TRAY (5+1) Download CAD Format for this SymbolPurchase Samples
TPS23841PAPRACTIVE-40 to 1258.05 | 1kuHTQFP (PAP) | 64 View 1000 | LARGE T&R 
TPS23841PAPRG4ACTIVE-40 to 1258.05 | 1kuHTQFP (PAP) | 64 View 1000 | LARGE T&R Download CAD Format for this Symbol
TPS23841PJDACTIVE-40 to 1258.85 | 1kuHTQFP (PJD) | 64  160 | JEDEC TRAY (5+1) 
TPS23841PJDG4ACTIVE-40 to 1258.85 | 1kuHTQFP (PJD) | 64  160 | JEDEC TRAY (5+1) Download CAD Format for this Symbol
TPS23841PJDRACTIVE-40 to 1258.05 | 1kuHTQFP (PJD) | 64  1000 | LARGE T&R Purchase Samples
TPS23841PJDRG4ACTIVE-40 to 1258.05 | 1kuHTQFP (PJD) | 64  1000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

  TI Inventory Status Reported Distributor Inventory
TPS23841PAPAs of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasDigiKey  Available
 EuropeAbacus Polar 160
 Avnet-SILICA 80
TPS23841PAPG4As of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasAvnet 850
 DigiKey  Available
TPS23841PAPRAs of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasDigiKey >1k
 AsiaWPI 662
TPS23841PAPRG4As of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasAvnet >1k
 DigiKey  Available
TPS23841PJDAs of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasAvnet 134
 DigiKey 131
 Mouser Electronics 133
 AsiaWPI 51
 EuropeAvnet-SILICA 115
TPS23841PJDG4As of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
TPS23841PJDRAs of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasDigiKey  Available
TPS23841PJDRG4As of 8:47 AM GMT, 03 Jul 2009As of 8:47 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TPS23841PAP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PAPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PAPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PAPRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PJD RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PJDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PJDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
TPS23841PJDRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for TPS23841 Help

Datasheet

Application Notes

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Errata

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