Datasheet Texas Instruments UCC2897A — Ficha de datos
| Fabricante | Texas Instruments |
| Serie | UCC2897A |
Controlador PWM de pinza activa de modo actual avanzado
Hojas de datos
UCC2897A Advanced Current-Mode Active-Clamp PWM Controller datasheet
PDF, 1.7 Mb, Revisión: E, Archivo publicado: jun 3, 2011
Extracto del documento
Precios
Estado
| UCC2897APW | UCC2897APWR | UCC2897ARGPR | UCC2897ARGPT | |
|---|---|---|---|---|
| Estado del ciclo de vida | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) | Activo (Recomendado para nuevos diseños) |
| Disponibilidad de muestra del fabricante | No | Sí | No | Sí |
Embalaje
| UCC2897APW | UCC2897APWR | UCC2897ARGPR | UCC2897ARGPT | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Pin | 20 | 20 | 20 | 20 |
| Package Type | PW | PW | RGP | RGP |
| Industry STD Term | TSSOP | TSSOP | VQFN | VQFN |
| JEDEC Code | R-PDSO-G | R-PDSO-G | S-PQFP-N | S-PQFP-N |
| Package QTY | 70 | 2000 | 3000 | 250 |
| Carrier | TUBE | LARGE T&R | LARGE T&R | SMALL T&R |
| Device Marking | UCC2897A | UCC2897A | 2897A | 2897A |
| Width (mm) | 4.4 | 4.4 | 4 | 4 |
| Length (mm) | 6.5 | 6.5 | 4 | 4 |
| Thickness (mm) | 1 | 1 | .93 | .93 |
| Pitch (mm) | .65 | .65 | .5 | .5 |
| Max Height (mm) | 1.2 | 1.2 | 1 | 1 |
| Mechanical Data | Descargar | Descargar | Descargar | Descargar |
Paramétricos
| Parameters / Models | UCC2897APW | UCC2897APWR | UCC2897ARGPR | UCC2897ARGPT |
|---|---|---|---|---|
| Control Method | Current | Current | Current | Current |
| Duty Cycle(Max), % | 74 | 74 | 74 | 74 |
| Frequency(Max), kHz | 1000 | 1000 | 1000 | 1000 |
| Gate Drive(Typ), A | 2 | 2 | 2 | 2 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package Group | TSSOP | TSSOP | QFN | QFN |
| Rating | Catalog | Catalog | Catalog | Catalog |
| Special Features | HV Start-up,Input Line Monitor,Programmable Slope Compensation,Soft Start,Soft Switching | HV Start-up,Input Line Monitor,Programmable Slope Compensation,Soft Start,Soft Switching | HV Start-up,Input Line Monitor,Programmable Slope Compensation,Soft Start,Soft Switching | HV Start-up,Input Line Monitor,Programmable Slope Compensation,Soft Start,Soft Switching |
| Topology | Active-Clamp Forward,Forward | Active-Clamp Forward,Forward | Active-Clamp Forward,Forward | Active-Clamp Forward,Forward |
| UVLO Thresholds On/Off, V | 12.7/~8 | 12.7/~8 | 12.7/~8 | 12.7/~8 |
| Vin(Max), V | 110 | 110 | 110 | 110 |
| Vin(Min), V | 18 | 18 | 18 | 18 |
Plan ecológico
| UCC2897APW | UCC2897APWR | UCC2897ARGPR | UCC2897ARGPT | |
|---|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente | Obediente |
Notas de aplicación
- UCC2897A Peak Current Mode Active Clamp Forward Converter Small Signal ModelingPDF, 748 Kb, Archivo publicado: enero 17, 2014
- External Slope Compensation for UCC2897A in Some Special ApplicationsPDF, 192 Kb, Archivo publicado: enero 5, 2010
- Understanding and Designing an Active Clamp Current Mode Controlled ConverterPDF, 845 Kb, Archivo publicado: mayo 6, 2010
The UCC2897A Current Mode Active Clamp PWM Controller offers a highly integrated feature set resulting in precision control required for an active clamp forward or flyback converter. The UCC2897A data sheet contains all the design details necessary for accurately programming the device. However, there are significant design considerations and trade-offs unique to the active clamp power stage that - Method of Providing Hiccup Operation for UCC2897AEVMPDF, 361 Kb, Archivo publicado: agosto 27, 2009
This application note is to provide users of the UCC2897AEVM with a method of generating acyclic restart or restart attempt of the EVM should the converter encounter an overcurrent condition including an output short.
Linea modelo
Serie: UCC2897A (4)
Clasificación del fabricante
- Semiconductors> Power Management> Offline and Isolated DC/DC Controllers and Converters> PWM and Resonant Controller