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UCD8220 Status: ACTIVE

Digitally Assisted Push Pull PWM Controller


      
         
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 UCD8220
Control MethodCurrent Mode,voltage Mode  
Duty Cycle(Max)(%)96  
Frequency(Max)(kHz)2000  
PWM Outputs(#)2  
TopologyFull-Bridge,Half-Bridge,Push-Pull  
UVLO Thresholds On/Off(V)4.5/4.25  
Pin/Package16HTSSOP, 16QFN  
Operating Temp Range(Celsius)-40 to 105  
 Samples
 Inventory

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    • Product Information

    Features

    • For Digitally Managed Power Supplies Using µCs or the TMS320™: DSP Family
    • Voltage or Peak Current Mode Control with Cycle-by-Cycle Current Limiting
    • Clock input from Digital Controller to set Operating Frequency and Max Duty Cycle
    • Analog PWM Comparator
    • 2-MHz Switching Frequency
    • 110-V Input Startup Circuit and Thermal Shutdown (UCD8620)
    • Internal Programmable Slope Compensation
    • 3.3-V, 10-mA Linear Regulator
    • DSP/µC Compatible Inputs
    • Dual ±4-A TrueDrive High Current Drivers
    • 10-ns Typical Rise and Fall Times with 2.2-nF
    • 25-ns Input-to-Output Propagation Delay
    • 25-ns Current Sense-to-Output Propagation Delay
    • Programmable Current Limit Threshold
    • Digital Output Current Limit Flag
    • 4.5-V to 15.5-V Supply Voltage Range
    • Rated from -40°C to 105°C
    • APPLICATIONS
      • Digitally Managed Switch Mode Power Supplies
      • Push-Pull, Half-Bridge, or Full-Bridge
        Converters

    View All Features in Datasheet

    Description

    The UCD8220 analog pulse-width modulator device is used in digitally managed power supplies using a microcontroller or the TMS320™ DSP family.

    UCD8220 ia a double-ended PWM controller configured with push-pull drive logic.

    Systems using the UCD8220 device close the PWM feedback loop with traditional analog methods, but the UCD8220 controller includes circuitry to interpret a time-domain digital pulse train. The pulse train contains the operating frequency and maximum duty cycle limit which are used to control the power supply operation. This eases implementation of a converter with high level control features without the added complexity or possible PWM resolution limitations of closing the control loop in the discrete time domain.

    		    

    Pricing / Packaging / CAD Design Tools / Samples

    PricePackagingCAD Design ToolsSamples
    DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
    UCD8220PWPACTIVE-40 to 1051.80 | 1kuHTSSOP (PWP) | 16 View 90 | TUBE Download CAD Format for this Symbol
    UCD8220PWPG4ACTIVE-40 to 1051.80 | 1kuHTSSOP (PWP) | 16 View 90 | TUBE Download CAD Format for this Symbol
    UCD8220PWPRACTIVE-40 to 1051.60 | 1kuHTSSOP (PWP) | 16 View 2000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
    UCD8220PWPRG4ACTIVE-40 to 1051.60 | 1kuHTSSOP (PWP) | 16 View 2000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
    UCD8220RSAPREVIEW-40 to 105 QFN (RSA) | 16 View   Not Available
    UCD8220RSARPREVIEW-40 to 105 QFN (RSA) | 16 View   Not Available

    * 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 9:49 AM GMT, 24 Nov 2009
    RegionCompanyIn StockPurchase
    TI Lead Time*: 20 WeeksUCD8220PWP
    AmericasNewark 180
    Rochester Electronics >1k
    AsiaWPI 180
    EuropeCompel 154
    WorldwideDigiKey 139
    Mouser Electronics 150
    TI Lead Time*: 20 WeeksUCD8220PWPG4
    WorldwideDigiKey  Available
    TI Lead Time*: 20 WeeksUCD8220PWPR
    WorldwideDigiKey  Available
    TI Lead Time*: 20 WeeksUCD8220PWPRG4
    WorldwideDigiKey  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
    UCD8220PWP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    UCD8220PWPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    UCD8220PWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    UCD8220PWPRG4 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 UCD8220 Help

    Datasheet

    More Literature

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