Datasheet Texas Instruments UCC28251PWR

ManufacturerTexas Instruments
SeriesUCC28251
Part NumberUCC28251PWR
Datasheet Texas Instruments UCC28251PWR

Advanced PWM Controller with Pre-Bias Operation 20-TSSOP -40 to 125

Datasheets

UCC28251 Advanced PWM Controller With Prebias Operation datasheet
PDF, 1.8 Mb, Revision: E, File published: Dec 29, 2014
Extract from the document

Prices

Status

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

Packaging

Pin20
Package TypePW
Industry STD TermTSSOP
JEDEC CodeR-PDSO-G
Package QTY2000
CarrierLARGE T&R
Device MarkingUCC28251
Width (mm)4.4
Length (mm)6.5
Thickness (mm)1
Pitch (mm).65
Max Height (mm)1.2
Mechanical DataDownload

Parametrics

Control MethodCurrent,Feedforward,Voltage
Duty Cycle(Max)100 %
Frequency(Max)1000 kHz
Frequency(Min)40 kHz
Gate Drive(Typ)0.2 A
Operating Temperature Range-40 to 125 C
Package GroupTSSOP
RatingCatalog
Special FeaturesLeading Edge Blanking,Multi-topology,Programmable Slope Compensation,Soft Start,Synchronization Pin
TopologyForward,Full-Bridge,Half-Bridge,Push-Pull
UVLO Thresholds On/Off4.3/4.1 V
Vin(Max)20 V
Vin(Min)4.3 V

Eco Plan

RoHSCompliant

Design Kits & Evaluation Modules

  • Evaluation Modules & Boards: UCC28250EVM-564
    Evaluation Module for UCC28250 Adv.PWM Controller w/ Pre-biased Load Op. on Secondary Side Control
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: UCC28250EVM-501
    Evaluation Module for UCC28250 Advanced PWM Controller on Primary Side Control
    Lifecycle Status: Active (Recommended for new designs)

Application Notes

  • Differences Between the UCC28251 and UCC28250 and Evaluation of the UCC28251 in (Rev. A)
    PDF, 36 Kb, Revision: A, File published: Feb 15, 2013
    The UCC28251 is a functional variant of the UCC28250 PWM Controller. While the same basic functionality of the UCC28250 is largely maintained, the UCC28251 is designed to operate at a lower frequency (minimum of 27 kHz when programmed by RT pin) allowing operation in 400-V input DC-to-DC converters in off-line AC-to-DC power supplies, where frequency-dependent high-voltage switching lossesare an
  • Fast input-voltage transient response with digitally-controlled isolated DC/DC
    PDF, 293 Kb, File published: Jul 24, 2015
  • Analog Applications Journal 3Q 2015
    PDF, 7.1 Mb, File published: Jul 24, 2015

Model Line

Series: UCC28251 (4)

Manufacturer's Classification

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