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TPS23770 Status: ACTIVE

IEEE 802.3af PD Controller with Integrated DC/DC


      
         
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 TPS23750 TPS23753 TPS23753A TPS23770
PoE Standards Supported802.3at type1  802.3at type1  802.3at type1  802.3at type1  
PD Power Level13W  13W  13W  13W  
PoE Inrush Limit(Typ)(mA)140  140  140  140  
PoE Current Limit(Min)(mA)405  405  405  405  
UVLO802.3af  Unified  Unified  Unified  
rDS(on) per FET(Typ)(mOhms)600  700  700  600  
Fault ResponseAuto Retry  Auto Retry  Auto Retry  Auto Retry  
Error AmplifierYes  No  No  Yes  
Auxiliary/Local Power SupportExternal Circuit  Programmable  Programmable  External Circuit  
Auxiliary Power Rails Supported24V-57V  12V-57V  12V-57V  24V-57V  
Driven/Active Clamp (Second Gate Drive)No  No  No  No  
Duty Cycle(%)50  78  78  50  
Switching FrequencyProgrammable  Synchronizable and Programmableup to 1MHz  Synchronizable and Programmable  Programmable  
Operating Temp Range(Celsius)-40 to 85  -40 to 125  -40 to 125  -40 to 85  
Pin/Package20HTSSOP  14TSSOP  14TSSOP  20HTSSOP  
Approx. Price (US$) 1.50 | 1ku   1.45 | 1ku   1.45 | 1ku   1.50 | 1ku  
RatingCatalog  Catalog  Catalog  Catalog  
 SamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS23750: IEEE 802.3af PD Controller with Integrated DC/DC
  • TPS23753A: IEEE 802.3-2005 PoE Interface and Isolated Converter Controller with Enhanced ESD Ride-Through
  • TPS23753: IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller

Product Information

Features

  • Complete 802.3af PoE Interface
    • Features derived from the TPS2375
    • 100 V, 0.6 Internal Pass MOSFET
    • Standard and Legacy UVLO Choices
    • Fixed 140 mA Inrush Limit
  • Primary Side DC/DC Converter Control
    • Minimum External Component Count
    • Current Mode Control
    • Isolated and Non-Isolated Topologies
    • Programmable Operating Frequency
    • Current Sense Leading-edge Blanking
    • 50% Duty Cycle Limiting
    • Voltage Output Error Amplifier
  • Internal PoE and Converter Sequencing
  • Industry-Standard 20 Lead Package
  • Industrial Temperature Range, -40°C to 85°C
  • APPLICATIONS
    • All PoE PD Devices Including:
      • Wireless Access Points
      • VoIP Phones
      • Security Cameras

PowerPAD is a trademark of Texas Instruments.

Description

The TPS23750 integrates the functionality of the TPS2375 with a primary side dc/dc PWM controller. The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.

The PoE front end has all the necessary IEEE 802.3af functions including detection, classification, undervoltage lockout and inrush control. The PoE input switch is integrated within the TPS23750.

The dc/dc controller section is designed to support flyback, forward, and nonsynchronous low-side switch buck topologies.

The external switching MOSFET and current sense resistor provide flexibility in topology, power level, and current limit. The full-featured dc/dc controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency, and a true voltage-output error amplifier. Additional protection features provide for robust designs.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS23770PWPACTIVE-40 to 851.65 | 1kuHTSSOP (PWP) | 20 View 70 | TUBE Download CAD Format for this SymbolPurchase Samples
TPS23770PWPG4ACTIVE-40 to 851.65 | 1kuHTSSOP (PWP) | 20 View 70 | TUBE Download CAD Format for this SymbolPurchase Samples
TPS23770PWPRACTIVE-40 to 851.50 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol
TPS23770PWPRG4ACTIVE-40 to 851.50 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol

* 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

Reported Distributor Inventory as of 10:08 AM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksTPS23770PWP
None Reported
View Distributors
TI Lead Time*: 4 WeeksTPS23770PWPG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksTPS23770PWPR
None Reported
View Distributors
TI Lead Time*: 20 WeeksTPS23770PWPRG4
None Reported
View Distributors
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** 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
TPS23770PWP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS23770PWPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS23770PWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS23770PWPRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* 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 TPS23770 Help

Datasheet

Application Notes

View Application Notes for Powered Devices

Tools & Software

NamePart # Company Tool / Software Type
TPS23750 Evaluation Module BuckTPS23750EVM-107Texas InstrumentsDevelopment Boards/EVMs
TPS23750 Evaluation Module FlybackTPS23750EVM-108Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS23750 IEEE 802.3af PD Controller with Integrated DC/DC POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.
TPS23753A IEEE 802.3-2005 PoE Interface and Isolated Converter Controller with Enhanced ESD Ride-Through POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.
TPS23753 IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.

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