UCC2897PWRG4

DC DC Switching Controllers Overview

The UCC2897PWRG4 is an advanced current-mode active-clamp PWM controller manufactured by Texas Instruments. It supports multiple topologies including flyback, forward, and synchronous rectifier applications. The device operates with a maximum switching frequency of 1 MHz and features a 20-pin TSSOP package. It includes a 110-V input startup function and offers soft-stop shutdown capabilities for main and auxiliary outputs. The component is rated for operating temperatures between -40°C and +105°C.

DC DC Switching Controllers Feature Summary

• Supports active-clamp, reset-forward, and flyback converter topologies
• Integrates 110-V input startup functionality for high-voltage applications
• Provides synchronized clock capability for multi-unit systems

DC DC Switching Controllers Applications

• Active-clamp flyback power supplies
• Reset-forward converters
• Synchronous rectifier circuits

DC DC Switching Controllers Procurement Notes

Verify the part status carefully as sources indicate this specific revision may be marked 'Not For New Designs.' Confirm the exact suffix matches your bill of materials. Ensure compatibility with existing PCB footprints for the 20-TSSOP package before procurement.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring active-clamp zero-voltage switching to improve efficiency. It is suitable for isolated power stages needing robust startup characteristics. Consider alternative newer generations if long-term availability is critical for new product development.

DC DC Switching Controllers Part Context

This component belongs to the UCC2897 family of DC-DC switching controllers. It is designed for high-performance power conversion where efficiency and thermal management are priorities. The device integrates control logic for complex magnetics driving in advanced converter architectures.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility with legacy designs manually.