Datasheet Texas Instruments UC3854Q — 数据表

制造商Texas Instruments
系列UC3854
零件号UC3854Q
Datasheet Texas Instruments UC3854Q

高功率因数预调节器20-PLCC 0至70

数据表

UCx854 High-Power Factor Preregulator datasheet
PDF, 949 Kb, 修订版: A, 档案已发布: Dec 16, 2016
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价格

状态

Lifecycle StatusNRND (Not recommended for new designs)
Manufacture's Sample AvailabilityNo

打包

Pin20
Package TypeFN
Industry STD TermPLCC
JEDEC CodeS-PQCC-J
Package QTY46
CarrierTUBE
Device MarkingUC3854Q
Width (mm)8.96
Length (mm)8.96
Thickness (mm)4.06
Pitch (mm)1.27
Max Height (mm)4.57
Mechanical Data下载

参数化

Control MethodCCM
Device TypeSingle-phase PFC
Operating Supply Current10 mA
Operating Supply(Max)30 V
Operating Temperature Range0 to 70 C
Package GroupPDIP,SOIC
Package Size: mm2:W x LSee datasheet (PDIP),16SOIC: 106 mm2: 10.3 x 10.3(SOIC) PKG
Peak Output Sink Current Gate Drive1 A
Peak Output Source Current Gate Drive-1 A
Practical Operating Frequency(Max)0.2 MHz
RatingCatalog
Special FeaturesAverage Current Mode,Enable
Startup Current1.5 mA
UVLO Thresholds On/Off16/10 V

生态计划

RoHSCompliant

应用须知

  • U-134 UC3854 Controlled Power Factor Correction Circuit Design
    PDF, 346 Kb, 档案已发布: Sep 5, 1999
    The UC1854 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. This application note describes the concepts and design of a boost prere
  • DN-39E Optimizing Performance in UC3854 Power Factor Correction Applications
    PDF, 277 Kb, 档案已发布: Sep 5, 1999
    The performance of the UC3854 Power-Factor Correction IC in the 250W application example has been evaluated using a precision PFC/THD instrument. The result was a power factor of 0.999 and Total Harmonic Distortion (THD) of 3.81%, measured to the 50th line frequency harmonic at nominal line and full load. Users should get similar results at these conditions. as well as over most line and load rang
  • DN-41 Extend Current Transformer Range
    PDF, 37 Kb, 档案已发布: Sep 5, 1999
    The problems with self reset of current transformers for unipolar pulse applications can be overcome with simple forced-reset techniques derived from magnetic amplifiers. Duty factors above 90% are achievable with these techniques. This design note describes a circuit configured for forced reset and a configuration that generates a negative voltage from the current transformer.
  • AC Requirements for Power Factor Correction Circuits
    PDF, 29 Kb, 档案已发布: Mar 28, 2002
    This technical brief identifies the recommended range of IAC for each of the devices within the UCC3854 family of PFC controllers.
  • Accurate PWM Duty Cycle Clamp
    PDF, 58 Kb, 档案已发布: Jan 25, 2002
    Power supply applications using current sense transformers require a duty cycle clamp on the pulse width modulator (PWM) to ensure transformer reset. Not all PWMs come with a duty cycle clamp presenting a problem for the power supply designer. This application note shows how to implement a duty cycle clamp by using a simple delay circuit.

模型线

制造商分类

  • Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction