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UCC1895 Status: ACTIVE

BiCMOS Advanced Phase Shift Resonant Controller

      
         
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Datasheet

Download - PDF Icon
  • BiCMOS Advanced Phase Shift PWM Controller (Rev. M) (ucc1895.pdf, 668 KB)
    06 Nov 2008 Download

 UCC1895UCC2895 UCC3895 
TopologyFull-Bridge  Full-Bridge  Boost, Buck, Full-Bridge  
Control MethodCurrent Mode, Voltage  Current Mode, Voltage  Current Mode, Voltage  
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

  • UCC2895: BiCMOS Advanced Phase Shift Resonant Controller
  • UCC3895: BiCMOS Advanced Phase Shift PWM Controller

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. The UCC3895 can operate with a maximum clock frequency of 1 MHz.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC1895JACTIVE-55 to 12514.31 | 1kuCDIP (J) | 20 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
UCC1895LACTIVE-55 to 12516.50 | 1kuLCCC (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

  TI Inventory Status Reported Distributor Inventory
UCC1895JAs of 8:47 AM GMT, 20 Nov 2008As of 8:47 AM GMT, 20 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 1409*  8 Weeks AmericasRochester Electronics 15
UCC1895LAs of 8:47 AM GMT, 20 Nov 2008As of 8:47 AM GMT, 20 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 2721*  8 Weeks EuropeSpoerle 1
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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 SNPB 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

Datasheets

  • BiCMOS Advanced Phase Shift PWM Controller (Rev. M) (ucc1895.pdf, 668 KB)
    06 Nov 2008 Download

Application Notes

  • Current Doubler Rectifier Offers Ripple Current Cancellation (slua323.htm, 8 KB)
    21 Sep 2004 Abstract
  • Synchronous Rectifiers of a Current Doubler (slua287.htm, 8 KB)
    27 Feb 2003 Abstract
  • UCC3895 CD Output Asymmetric Duty Cycle Operation (slua275.htm, 8 KB)
    21 Aug 2002 Abstract
  • A Power Management Solution for Efficient, Multiple Output Applications (slua255.htm, 8 KB)
    04 Oct 2001 Abstract
  • A Comparison Between the BiCMOS UCC3895 Phase Shift Controller and the UC3875 (slua246.htm, 8 KB)
    22 Feb 2001 Abstract
  • DN-63 The Current-Doubler Rectifier: An Alternative Rectification Technique (slua121.htm, 9 KB)
    12 Jan 2001 Abstract

View Application Notes for PWM Power Supply Controllers

User Guides

  • UCC3895EVM-001 Configuring The UCC3895 For Direct Control Driven Synchronous Re (Rev. A) (sluu109a.htm, 9 KB)
    10 Jan 2002 Abstract

View User Guides for PWM Power Supply Controllers

Tools & Software

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

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UCC3895BiCMOS Advanced Phase Shift PWM ControllerTI customers also evaluated this product.

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