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UC3879 Status: ACTIVE

Phase Shift Resonant Controller


      
         
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See Also

  • UCC3895 - This device has SIMILAR FUNCTIONALITY, newer device with better features

Datasheet

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Other qualified versions of UC3879

Version Part Number Definition
Military UC1879 QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

  • UCC3895: BiCMOS Advanced Phase Shift PWM Controller
  • UC3875: Phase Shift Resonant Controller
  • UCC2895: BiCMOS Advanced Phase Shift Resonant Controller
  • TPS54231: 2A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-Mode ™
  • TPS76301: Single Output LDO, 150mA, Adj.(1.5 to 6.0V), Low Quiescent Current, Thermal Protection
  • TPS71202: Dual 250 mA Output, UltraLow Noise, High PSRR Low Dropout Linear Regulator

Product Information

Features

  • Programmable Output Turn On Delay; Zero Delay Available
  • Compatible with Voltage Mode orCurrent Mode Topologies
  • Practical Operation at Switching Frequencies to 300 kHz
  • 10-MHz Error Amplifier
  • Pin Programmable Undervoltage Lockout
  • Low Startup Current — 150 µA
  • Soft Start Control
  • Outputs Active Low During UVLO

Description

The UC3879 controls a bridge power stage by phase shifting the switching of one half-bridge with respect to the other. This allows constant frequency pulse width modulation in combination with resonant, zero-voltage switching for high efficiency performance. The UC3879 can be configured to provide control in either voltage mode or current mode operation, with overcurrent shutdown for fast fault protection.

Independently programmable time delays provide dead-time at the turn-on of each output stage, allowing time for each resonant switching interval.

With the oscillator capable of operating in excess of 600 kHz, overall output switching frequencies to 300 kHz are practical. In addition to the standard free running mode, with the CLKSYNC pin, the user may configure the UC3879 to accept an external clock synchronization signal.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Replaced ByPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UC3879DWACTIVE0 to 70 4.05 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3879DWG4ACTIVE0 to 70 4.05 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3879DWTRACTIVE0 to 70 3.80 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3879DWTRG4ACTIVE0 to 70 3.80 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3879JOBSOLETE0 to 70UCC1895J CDIP (J) | 20     Download CAD Format for this FootprintReplaced by UCC1895J
UC3879NACTIVE0 to 70 4.05 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3879NG4ACTIVE0 to 70 4.05 | 1kuPDIP (N) | 20 View 20 | 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 9:52 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUC3879DW
AmericasRochester Electronics >1k
EuropeAvnet-SILICA 10
Spoerle 150
WorldwideMouser Electronics 75
TI Lead Time*: 20 WeeksUC3879DWG4
AmericasAvnet 189
AsiaFarnell Asia 13
EuropeFarnell 13
WorldwideMouser Electronics >1k
TI Lead Time*: 20 WeeksUC3879DWTR
AmericasRochester Electronics >1k
TI Lead Time*: 20 WeeksUC3879DWTRG4
None Reported
View Distributors
Call**UC3879J
AmericasRochester Electronics 46
TI Lead Time*: 20 WeeksUC3879N
AmericasAvnet 37
Rochester Electronics 941
EuropeArrow Southern Europe 340
Avnet-SILICA 133
WorldwideMouser Electronics 92
TI Lead Time*: 20 WeeksUC3879NG4
None Reported
View Distributors
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
UC3879DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3879DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3879DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3879DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3879N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3879NG4 RoHS Compliant Green (RoHS & no Sb/Br) 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 UC3879 Help

Datasheet

Application Notes

View Application Notes for PWM Power Supply Controllers

Tools & Software

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

Part # Name Product Family Comments
UCC3895   BiCMOS Advanced Phase Shift PWM Controller   AC/DC AND DC/DC POWER SUPPLIES - PWM POWER SUPPLY CONTROLLERS   This device has SIMILAR FUNCTIONALITY, newer device with better features  
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UCC2895 BiCMOS Advanced 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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