Herramienta de cálculo
UCC28950
Controlador de puente completo con cambio de fase ecológica y control de rectificación síncrona
Hoja de datos
UCC28950
- Enhanced Wide Range Resonant Zero Voltage Switching (ZVS) Capability
- Direct Synchronous Rectifier (SR) Control
- Light-Load Efficiency Management Including
- Burst Mode Operation
- Discontinuous Conduction Mode (DCM), Dynamic SR On and Off Control with Programmable Threshold
- Programmable Adaptive Delay
- Average or Peak Current Mode Control With Programmable Slope Compensation and Voltage Mode Control
- Naturally Handles Pre-Biased Start Up With DCM Mode
- Closed Loop Soft Start and Enable Function
- Programmable Switching Frequency up to 1 MHz with Bi-Directional Synchronization
- (±3%) Cycle-by-Cycle Current Limit Protection With Hiccup Mode Support
- 150-µA Start-Up Current
- VDD Undervoltage Lockout
- Wide Temperature Range –40°C to +125°C
The UCC28950 enhanced phase-shifted controller builds upon Texas Instrument’s industry standard UCx895 phase-shifted controller family with enhancements that offer best in class efficiency in today’s high performance power systems. The UCC28950 implements advanced control of the full-bridge along with active control of the synchronous rectifier output stage.
The primary-side signals allow programmable delays to ensure ZVS operation over wide-load current and input voltage range, while the load current naturally tunes the secondary-side synchronous rectifiers switching delays, maximizing overall system efficiency.
The UCC28950 also offers multiple light-load management features including burst mode and dynamic SR on/off control when transitioning in and out of Discontinuous Current Mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads.
In addition, the UCC28950 includes support for current or voltage mode control. Programmable switching frequency up to 1 MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO and thermal shutdown. A 90-degree phase-shifted interleaved synchronized operation can be easily arranged between two converters.
The UCC28950 is available in TSSOP-24 package.
For all available packages, see the orderable addendum at the end of the datasheet.Productos similares que pueden interesarle
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Documentación técnica
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Ver todo 19 Diseño y desarrollo
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Placa de evaluación
UCC27714EVM-551 — Módulo de evaluación UCC27714 de convertidor de puente completo de 600 W con cambio de fase
This 600W EVM was designed to demonstrate how the UCC28950 control IC, UCC27524A and UCC27714 gate drivers could be used in a phase shifted full bridge converter that achieves ZVS from 50 to 100% load.
Guía del usuario: PDF
Modelo de simulación
UCC28950 and UCC28951 PSpice Transient Model (Rev. B)
SLUM169B.ZIP (153 KB) - PSpice Model
Modelo de simulación
UCC28950 and UCC28951 TINA-TI Startup Reference Design (Rev. A)
SLUM276A.TSC (738 KB) - TINA-TI Reference Design
Modelo de simulación
UCC28950 and UCC28951 TINA-TI Steady State Reference Design (Rev. A)
SLUM277A.TSC (739 KB) - TINA-TI Reference Design
Herramienta de cálculo
SLUC222 — UCC28950 Excel Design Tool
Productos y hardware compatibles
Productos
AC/DC & DC/DC controllers (external FET)
Desarrollo de hardware
Placa de evaluación
Diseños de referencia
PMP7246 — Diseño de referencia de convertidor de potencia de 350 W con entrada de 36 V a 60 V, modulación de d
This is a 350W High Speed Full Bridge Phase Shift ZVT Synchronous Rectification DC/DC reference design. It is built for telecom applications to supply a RF Power Amplifier stage. The design is utilizing UCC28950 voltage mode forward and average current limitation backward converter (two quadrant (...)
Diseños de referencia
PMP8606 — Diseño de referencia de fuente de alimentación CC/CC de 300 W y puente completo con desplazamiento d
This design is a 100kHz FBPS converter working in voltage mode. It supports 400Vdc..750Vdc input voltage range and provides 24V/12A regulated. TI's UCC28950 part enables high efficiency at high input voltage.
Diseños de referencia
PMP6712 — Diseño de referencia de convertidor de puente completo de canal doble (54 V a 30 A) para abastecimie
This is a phase-shifted full-bridge converter reference design capable of delivering 1600 W of isolated output power and achieving efficiency of greater than 96%. This design uses the UCC28950 controller in a dual-phase primary/secondary configuration. An LM5017 constant on-time synchronous buck (...)
| Paquete | Pasadores | Descargar |
|---|---|---|
| TSSOP (PW) | 24 | Ver opciones |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.