Datasheet Texas Instruments UC3854Q — Ficha de datos
Fabricante | Texas Instruments |
Serie | UC3854 |
Numero de parte | UC3854Q |
Preregulador de factor de alta potencia 20-PLCC 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 vida | NRND (No recomendado para nuevos diseños) |
Disponibilidad de muestra del fabricante | No |
Embalaje
Pin | 20 |
Package Type | FN |
Industry STD Term | PLCC |
JEDEC Code | S-PQCC-J |
Package QTY | 46 |
Carrier | TUBE |
Device Marking | UC3854Q |
Width (mm) | 8.96 |
Length (mm) | 8.96 |
Thickness (mm) | 4.06 |
Pitch (mm) | 1.27 |
Max Height (mm) | 4.57 |
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 | PDIP,SOIC |
Package Size: mm2:W x L | See datasheet (PDIP),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
- U-134 UC3854 Controlled Power Factor Correction Circuit DesignPDF, 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 ApplicationsPDF, 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 RangePDF, 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 CircuitsPDF, 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 ClampPDF, 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)
Clasificación del fabricante
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction