UCC2977PWR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

UCC2977PWR is an advanced and highly efficient PWM controller from Texas Instruments, which is widely used in industrial, consumer and green energy applications. It is an integrated controller for low input and low output power, supports automatic current sharing and is configured to provide digital feedback. It is designed to provide a high level of system performance and efficiency, while lowering total system cost.

Overview

The UCC2977PWR is a step-down, buck-boost and H-bridge controller designed to provide high performance power conversion solutions. It can be used in applications such as PFC, Power Supplies, Motor Control and Lighting. The controller has an inherent universal output voltage range and supports a wide range of input voltages and the flexible power topology switching. It allows the designer to select between different control modes: Voltage Mode or Current Mode, depending on the application. Additionally, the controller has built-in protection features such as Over-Current, Over-Voltage, and Under-Voltage.

System Applications

UCC2977PWR is used for a vast range of applications, including:

• Power Factor Correction (PFC)
• Power Supplies
• Motor control
• Lighting
• Telecommunications
• Home/Industrial Automation
• Consumer Electronics

Working Principle

UCC2977PWR uses proprietary compensation circuitry to improve stability and reduce noise, –40°C to +125°C operating temperature range, automatic current sharing and several protection features. This step-down, buck-boost and H-bridge controller regulates output current, output voltage and switching frequency, depending on the specific application.

To ensure system stability, UCC2977PWR features high-density compensation circuitry and phase-lock-loop (PLL). The controller also features exclusive low-side MOSFET gate drivers for enhanced robustness. Furthermore, it supports both voltage-mode and current-mode control, allowing for a flexible design.

Advanced features

UCC2977PWR offers a wide range of features including automatic current balance, dynamic voltage positioning, over-voltage and over-current protection, soft-start, and power sequencing. Additionally, it includes an intelligent current share port for connecting digital and analog transducers to the controller, allowing for a more efficient system configuration and digital feedback.

The UCC2977PWR also offers an advanced, low-side MOSFET on-time adjust feature, which allows the designer to adjust the gate drive timing to optimize the controller’s performance. In addition, the controller supports peak-current-mode control, and can be configured to provide either a single-ended or differential output voltage.

Conclusion

UCC2977PWR is an outstanding PWM controller that is widely used for industrial, consumer, telecommunication and green energy applications. It includes several features that make it easier for designers to create an efficient and cost-effective system. Its features, including an automatic current share port, dynamic voltage positioning and low-side MOSFET gate driver enable it to provide a high performance and reliable system.

The specific data is subject to PDF, and the above content is for reference