Datasheet Texas Instruments UC3854DW — Ficha de datos

FabricanteTexas Instruments
SerieUC3854
Numero de parteUC3854DW
Datasheet Texas Instruments UC3854DW

Preregulador de factor de alta potencia 16-SOIC 0 a 70

Hojas de datos

UCx854 High-Power Factor Preregulator datasheet
PDF, 949 Kb, Revisión: A, Archivo publicado: dic 16, 2016
Extracto del documento

Precios

Estado

Estado del ciclo de vidaActivo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante

Embalaje

Pin16
Package TypeDW
Industry STD TermSOIC
JEDEC CodeR-PDSO-G
Package QTY40
CarrierTUBE
Device MarkingUC3854DW
Width (mm)7.5
Length (mm)10.3
Thickness (mm)2.35
Pitch (mm)1.27
Max Height (mm)2.65
Mechanical DataDescargar

Paramétricos

Control MethodCCM
Device TypeSingle-phase PFC
Operating Supply Current10 mA
Operating Supply(Max)30 V
Operating Temperature Range0 to 70 C
Package GroupSOIC
Package Size: mm2:W x L16SOIC: 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

Plan ecológico

RoHSObediente

Notas de aplicación

  • U-134 UC3854 Controlled Power Factor Correction Circuit Design
    PDF, 346 Kb, Archivo publicado: sept 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, Archivo publicado: sept 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, Archivo publicado: sept 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, Archivo publicado: marzo 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, Archivo publicado: enero 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.

Linea modelo

Clasificación del fabricante

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