Datasheet Texas Instruments UC3854DWTRG4 — Ficha de datos

Fabricante	Texas Instruments
Serie	UC3854
Numero de parte	UC3854DWTRG4

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

Hojas de datos

Descargar

PDF, 949 Kb, Revisión: A, Archivo publicado: dic 16, 2016

Extracto del documento

Precios

Estado

Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No

Embalaje

Pin	16
Package Type	DW
Industry STD Term	SOIC
JEDEC Code	R-PDSO-G
Package QTY	2000
Carrier	LARGE T&R
Device Marking	UC3854DW
Width (mm)	7.5
Length (mm)	10.3
Thickness (mm)	2.35
Pitch (mm)	1.27
Max Height (mm)	2.65
Mechanical Data	Descargar

Paramétricos

Control Method	CCM
Device Type	Single-phase PFC
Operating Supply Current	10 mA
Operating Supply(Max)	30 V
Operating Temperature Range	0 to 70 C
Package Group	SOIC
Package Size: mm2:W x L	16SOIC: 106 mm2: 10.3 x 10.3(SOIC) PKG
Peak Output Sink Current Gate Drive	1 A
Peak Output Source Current Gate Drive	-1 A
Practical Operating Frequency(Max)	0.2 MHz
Rating	Catalog
Special Features	Average Current Mode,Enable
Startup Current	1.5 mA
UVLO Thresholds On/Off	16/10 V

Plan ecológico

RoHS

Obediente

Notas de aplicación

Descargar
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
Descargar
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
Descargar
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.
Descargar
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.
Descargar
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

Serie: UC3854 (9)

UC3854DW UC3854DWG4 UC3854DWTR UC3854DWTR-FG4 UC3854DWTRG4 UC3854N UC3854NG4 UC3854Q UC3854QTR

Clasificación del fabricante

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