Datasheet Texas Instruments UC2854BJ — Ficha de datos

Fabricante	Texas Instruments
Serie	UC2854BM
Numero de parte	UC2854BJ

Preregulador de factor de alta potencia mejorado 16-CDIP -40 a 85

Hojas de datos

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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	J
Industry STD Term	CDIP
JEDEC Code	R-GDIP-T
Package QTY	1
Carrier	TUBE
Device Marking	UC2854BJ
Width (mm)	6.92
Length (mm)	19.56
Thickness (mm)	4.57
Pitch (mm)	2.54
Max Height (mm)	5.08
Mechanical Data	Descargar

Paramétricos

Control Method	CCM
Duty Cycle(Max)	95 %
Operating Temperature Range	-40 to 85 C
Package Group	CDIP
Package Size: mm2:W x L	See datasheet (CDIP) PKG
Rating	Military
Special Features	> 750W Applications,Average Current Mode,Enable
UVLO Thresholds On/Off	16/10 V

Plan ecológico

RoHS	See ti.com

Notas de aplicación

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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
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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
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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.
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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: UC2854BM (1)

UC2854BJ

Clasificación del fabricante

Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter