Datasheet Texas Instruments UC2855BNG4 — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | UC2855B |
| Numero de parte | UC2855BNG4 |
Preregulador de factor de potencia de alto rendimiento 20-PDIP -40 a 85
Hojas de datos
High Performance Power Factor Preregulator datasheet
PDF, 1.3 Mb, Revisión: B, Archivo publicado: oct 27, 2005
Extracto del documento
Precios
Estado
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | Sí |
Embalaje
| Pin | 20 |
| Package Type | N |
| Industry STD Term | PDIP |
| JEDEC Code | R-PDIP-T |
| Package QTY | 20 |
| Carrier | TUBE |
| Device Marking | UC2855BN |
| Width (mm) | 6.35 |
| Length (mm) | 24.33 |
| Thickness (mm) | 4.57 |
| Pitch (mm) | 2.54 |
| Max Height (mm) | 5.08 |
| Mechanical Data | Descargar |
Paramétricos
| Control Method | CCM |
| Device Type | Single-phase PFC |
| Operating Supply Current | 17 mA |
| Operating Supply(Max) | 20 V |
| Operating Temperature Range | -40 to 85 C |
| Package Group | PDIP |
| Package Size: mm2:W x L | See datasheet (PDIP) PKG |
| Peak Output Sink Current Gate Drive | 1.5 A |
| Peak Output Source Current Gate Drive | -1.5 A |
| Practical Operating Frequency(Max) | 0.5 MHz |
| Rating | Catalog |
| Special Features | > 750W Applications,Average Current Mode,Enable,OVP |
| Startup Current | 0.15 mA |
| UVLO Thresholds On/Off | 10.5/10 V |
Plan ecológico
| RoHS | Obediente |
Notas de aplicación
- U-153 UC3855A/B High Performance Power Factor Preregulator (Rev. A)PDF, 875 Kb, Revisión: A, Archivo publicado: sept 23, 2003
- 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. - DN-66 UC3854A/B and UC3855A/B Provide Power Limiting with Sinusoidal Input (Rev. A)PDF, 80 Kb, Revisión: A, Archivo publicado: nov 6, 2001
- 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: UC2855B (7)
Clasificación del fabricante
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction