TI Home > Semiconductors > Power Management > AC/DC and DC/DC Power Supplies > Power Factor Correction ICs >

UCC28051 Status: ACTIVE

PFC Controller for low to medium power applications requiring compliance with IEC 1000-3-2


      
         
Alert me about changes<br/>to this product


Datasheet

Download - PDF Icon

 UCC28051
UVLO Thresholds On/Off(V)16/10  
Operating Supply(Max)(V)18  
Startup Current(mA)0.075  
Operating Supply Current(mA)4  
Practical Operating Frequency(Max)(MHz)0.2  
Pin/Package8PDIP, 8SOIC  
RatingCatalog  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • UCC28060: Natural Interleaved Dual-Phase Transition-Mode PFC Controller
  • UCC28061: Natural Interleaving(TM) Transition-Mode PFC Controller with Improved Audible Noise Immunity
  • UCC28019A: 8-Pin Continuous Conduction Mode (CCM) PFC Controller
  • UCC28600: 8-Pin Quasi Resonant Flyback Green Mode Controller
  • UCC25600: 8-Pin High-Performance Resonant Mode Controller
  • UCC28810: LED Lighting Power Controller

Product Information

Features

  • Transition Mode PFC Controller for Low
    Implementation Cost
  • Industry Pin Compatibility With Improved
    Feature Set
  • Improved Transient Response With
    Slew-Rate Comparator
  • Zero Power Detect to Prevent OVP During
    Light Load Conditions
  • Accurate Internal VREF for Tight Output
    Regulation
  • Two UVLO Options
  • Overvoltage Protection (OVP),
    Open-Feedback Protection and Enable
    Circuits
  • ± 750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages
  • APPLICATIONS
    • Switch-Mode Power Supplies for Desktops,
      Monitors, TVs and Set Top Boxes (STBs)
    • AC Adapter Front-End Power Supplies
    • Electronic Ballasts

Description

The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. It is designed for controlling a boost preregulator operating in transition mode (also referred to as boundary conduction mode or critical conduction mode operation). It features a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic and a totem-pole driver for driving an external FET.

In the transition mode operation, the PWM circuit is self-oscillating with the turn-on being governed by an inductor zero-current detector (ZCD pin) and the turn-off being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.

The UCC38050 and UCC38051, while being pin compatible with other industry controllers providing similar functionality, offer many feature enhancements and tighter specifications, leading to an overall reduction in system implementation cost. The system performance is enhanced by incorporation of zero power detect function which allows the controller output to shut down at light load conditions without running into overvoltage. The device also features innovative slew rate enhancement circuits which improve the large signal transient performance of the voltage error amplifier. The low start-up and operating currents of the device results in low power consumption and ease of start-up. Highly accurate internal bandgap reference leads to tight regulation of output voltage in normal and OVP conditions, resulting in higher system reliability. The enable comparator ensures that the controller is off if the feedback sense path is broken or if the input voltage is very low.

There are two key parameteric differences between UCC38050 and UCC38051. The UVLO turn-on threshold of UCC38050 is 15.8 V while for UCC38051 it is 12.5 V. Secondly, the gM amplifier’s source current for UCC38050 is typically 1.3 mA while for UCC38051 it is 300 µA. The higher UVLO turn-on threshold of the UCC38050 allows quicker and easier start-up with a smaller VCC capacitance while the lower UVLO turn-on threshold of UCC38051 allows the operation of the PFC chip to be easily controlled by the downsteam PWM controller in two-stage power converters. The UCC38050 gM amplifier also provides a full 1.3-mA typical source current for faster start-up and improved transient response when output is low either at start-up or during transient conditions. The UCC38051 scales this source current back down to 300-µA typical source current to gradually increase the error voltage preventing a step increase in line currents at start-up but still provides good transient response. The UCC38051 is suitable for multiple applications including AC adapters where a two-stage power conversion is needed. The UCC38050 is suitable for applications such as electronic ballasts where there is no down-stream PWM conversion and the advantages of smaller VCC capacitor and improved transient response can be realized.

Devices are available in either the industrial temperature range of –40°C to 105°C (UCC2805x) or commercial temperature range of 0°C to 70°C (UCC3805x). Package offerings are 8-pin SOIC (D) or 8-pin PDIP (P) packages.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC28051DACTIVE-40 to 1050.75 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28051DG4ACTIVE-40 to 1050.75 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28051DRACTIVE-40 to 1050.65 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC28051DRG4ACTIVE-40 to 1050.65 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC28051PACTIVE-40 to 1050.90 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28051PE4ACTIVE-40 to 1050.90 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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 9:42 AM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksUCC28051D
AmericasArrow 320
Avnet 342
Newark 223
Rochester Electronics >1k
AsiaWPI 172
EuropeSpoerle 150
WorldwideDigiKey 556
Mouser Electronics 378
TI Lead Time*: 4 WeeksUCC28051DG4
WorldwideDigiKey  Available
Mouser Electronics 390
TI Lead Time*: 20 WeeksUCC28051DR
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28051DRG4
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksUCC28051P
AmericasRochester Electronics >1k
AsiaWPI >1k
WorldwideDigiKey 203
TI Lead Time*: 4 WeeksUCC28051PE4
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
UCC28051D RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28051DG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28051DR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28051DRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28051P RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
UCC28051PE4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU 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 UCC28051 Help

Datasheet

User Guides

View User Guides for Power Factor Correction ICs

Tools & Software

NamePart # Company Tool / Software Type
MathCAD Calculation Tool for UCC38050 Transition Mode PFC ControllerUCC38050-CALCTexas InstrumentsCalculation Utilities
UCC28051 Evaluation ModuleUCC28051EVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC28060 Natural Interleaved Dual-Phase Transition-Mode PFC Controller AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UCC28061 Natural Interleaving(TM) Transition-Mode PFC Controller with Improved Audible Noise Immunity AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UCC28019A 8-Pin Continuous Conduction Mode (CCM) PFC Controller AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UCC28600 8-Pin Quasi Resonant Flyback Green Mode Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC25600 8-Pin High-Performance Resonant Mode Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC28810 LED Lighting Power Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TPS40211 Wide Input Range Current Mode Boost Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TL431A Adjustable Precision Shunt Regulator VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE TI customers also evaluated this product.
TPS54231 2A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-Mode ™ DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS40210 Wide Input Range Current Mode Boost Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS54331 3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™ DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS54160 3.5V to 60V, 1.5A Step Down SWIFT™ Converter with Eco-Mode™ DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS40200 Wide Input Non-Synchronous Buck DC/DC Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.

All End-Equipment

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here