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Datasheet Texas Instruments UCC28950PWR

Datasheet Texas Instruments UCC28950PWR

ManufacturerTexas Instruments
Part NumberUCC28950PWR

Green Phase-Shifted Full-Bridge Controller with Synchronous Rectification 24-TSSOP -40 to 125


  • Download » Datasheet, PDF, 2.7 Mb, Revision: D, 11-04-2016, File uploaded 03-23-2018
    UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification datasheet
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    SLUSA16D – MARCH 2010 – REVISED NOVEMBER 2016 UCC28950 Green Phase-Shifted Full-Bridge Controller With Synchronous Rectification
    1 Features 3 Description The UCC28950 enhanced phase-shifted controller
    builds upon Texas Instrument’s industry standard
    UCx895 phase-shifted controller family with
    enhancements that offer best in class efficiency in
    today’s high performance power systems. The
    UCC28950 implements advanced control of the fullbridge along with active control of the synchronous
    rectifier output stage. 1 Enhanced Wide Range Resonant Zero Voltage
    Switching (ZVS) Capability
    Direct Synchronous Rectifier (SR) Control
    Light-Load Efficiency Management Including
    – Burst Mode Operation
    – Discontinuous Conduction Mode (DCM),
    Dynamic SR On and Off Control with
    Programmable Threshold
    – Programmable Adaptive Delay
    Average or Peak Current Mode Control With ...


Family: UCC28950


Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes


Package TypePW
Industry STD TermTSSOP
Package QTY2000
CarrierLARGE T&R
Device MarkingUCC28950
Width (mm)4.4
Length (mm)7.8
Thickness (mm)1
Pitch (mm).65
Max Height (mm)1.2
Mechanical DataDownload »


Control MethodCurrent,Voltage
Duty Cycle(Max)95 %
Frequency(Max)1000 kHz
Gate Drive(Typ)0.2 A
Operating Temperature Range-40 to 125 C
Package GroupTSSOP
Special FeaturesError Amplifier,Multi-topology,Soft Start,Soft Switching,Synchronization Pin
TopologyPhase-Shifted Full-Bridge
UVLO Thresholds On/Off7.3/6.75 V
Vin(Max)20 V
Vin(Min)8 V

Eco Plan


Design Kits & Evaluation Modules

  • Evaluation Modules & Boards: UCC27714EVM-551
    UCC27714 600W Phase Shifted Full Bridge Converter Evaluation Module
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: UCC28950EVM-442
    UCC28950 600-W, Phase-Shifted, Full-Bridge Converter Evaluation Module
    Lifecycle Status: Active (Recommended for new designs)

Application Notes

  • Download » Application Notes, PDF, 935 Kb, Revision: C, 06-09-2011
    UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. C)
    In high-power server applications to meet high-efficiency and green standards some power-supply designers have found it easier to use a phase-shifted, full-bridge converter. This is because the phase-shifted, full-bridge converter can obtain zero-voltage switching on the primary side of the converter reducing switching losses, and EMI and increasing overall efficiency. The purpose of this applicat
  • Download » Application Notes, PDF, 229 Kb, 10-10-2016
    Gate Driver Design Considerations
    The UCC28950/UCC28951-Q1 phase-shifted full-bridge controllers offer several features to improve power conversion efficiency at light loads. In particular, as the load current drops below the DCM threshold the duty cycle applied to the transformer reduces and eventually the device enters a burst mode. This application note describes how a user can design their gate driver circuits to operate corre
  • Download » Application Notes, PDF, 386 Kb, 05-09-2012
    Frequency Dithering With the UCC28950 and TLV3201
  • Download » Application Notes, PDF, 412 Kb, 08-11-2010
    Computing power going “Platinum”
  • Download » Application Notes, PDF, 650 Kb, 09-13-2011
    Synchronizing Three or More UCC28950 Phase-Shifted, Full-Bridge Controllers
    One of the key features of the UCC28950 phase-shifted, full-bridge controller is its ability to synchronize its main oscillator to an external clock source. In this way, multiple controllers can be synchronized to improve performance criteria of the end power supply. This application report expands the details of the synchronization capability of the UCC28950, provides examples of simple circuits
  • Download » Application Notes, PDF, 137 Kb, 08-01-2011
    Pre-biased Output Voltage Startup Operation of the UCC28950
  • Download » Application Notes, PDF, 1.5 Mb, 08-11-2010
    3Q 2010 Issue Analog Applications Journal

Moldel Line

Series: UCC28950 (2)

Manufacturer's Classification

  • Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller
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