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UCC1895 Status: ACTIVE

BiCMOS Advanced Phase Shift Resonant Controller


      
         
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Datasheet

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Functional Block Diagram


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 UCC1895UCC2895 UCC3895 
TopologyFull-Bridge  Full-Bridge  Boost, Buck, Full-Bridge  
Control MethodCurrent Mode, Voltage Mode  Current Mode, Voltage Mode  Current Mode, Voltage Mode  
Duty Cycle(Max)(%)100  100  100  
PWM Outputs(#)4  4  4  
Frequency(Max)(kHz)1000  1000  1000  
UVLO Thresholds On/Off(V)11/9  11/9  11/9  
Pin/Package20CDIP, 20LCCC  20PDIP, 20PLCC, 20SOIC, 20TSSOP  20PDIP, 20PLCC, 20SOIC, 20TSSOP  
Regulated Outputs(#)4  4  4  
 SamplesSamplesSamples
 InventoryInventoryInventory

Other qualified versions of UCC1895

Version Part Number Definition
Catalog UCC3895 TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

  • UCC3895: BiCMOS Advanced Phase Shift PWM Controller
  • UCC2895: BiCMOS Advanced Phase Shift Resonant Controller
  • TL494: PWM Control Circuit

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Product Information

Features

  • Programmable Output Turn-on Delay
  • Adaptive Delay Set
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak Current-Mode, or Average Current-Mode Control
  • Programmable Softstart/Softstop and Chip Disable via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During UVLO
  • APPLICATIONS
    • Phase-Shifted Full-Bridge Converters
    • Off-Line, Telecom, Datacom and Servers
    • Distributed Power Architecture
    • High-Density Power Modules

Description

The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part can be used either as a voltage-mode or current-mode controller.

While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Since it is built using the BCDMOS process, it operates with dramatically less supply current than it's bipolar counterparts.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC1895JACTIVE-55 to 12515.74 | 100uCDIP (J) | 20 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
UCC1895LACTIVE-55 to 12518.15 | 100uLCCC (FK) | 20 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office

* 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 9:52 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 8 WeeksUCC1895J
AmericasAvnet 11
Rochester Electronics 5
EuropeEBV Elektronik 1
TI Lead Time*: 8 WeeksUCC1895L
AmericasAvnet 15
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
UCC1895J  TBD A42  N/A for Pkg TypeViewView
UCC1895L  TBD POST-PLATE N/A for Pkg TypeViewView

* 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 UCC1895 Help

Datasheet

Application Notes

View Application Notes for PWM Power Supply Controllers

User Guides

View User Guides for PWM Power Supply Controllers

Tools & Software

NamePart # Company Tool / Software Type
UCC3895 Evaluation ModuleUCC3895EVM-001Texas InstrumentsDevelopment Boards/EVMs

Simulation Models

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC3895 BiCMOS Advanced Phase Shift PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC2895 BiCMOS Advanced Phase Shift Resonant Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TL494 PWM Control Circuit AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC1875 Phase Shift Resonant Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.

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