UCC256403DDBT

Power Supply Controllers, Monitors Overview

The UCC256403 is a resonant controller designed for LLC and phase-shifted full-bridge topologies. It integrates a high-voltage startup regulator, soft-start circuitry, and frequency compensation. The device supports variable frequency control with programmable dead-time and includes protection features such as over-current, over-voltage, and thermal shutdown. Operating from a wide supply voltage range, it ensures stable performance in high-efficiency power conversion applications.

Power Supply Controllers, Monitors Feature Summary

• Integrated high-voltage startup regulator eliminates external bias components
• Supports both LLC resonant and phase-shifted full-bridge converter topologies
• Includes comprehensive protection mechanisms for over-current and thermal safety

Power Supply Controllers, Monitors Applications

• Server and data center power supplies
• Telecommunications power systems
• Industrial motor drives

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix (DDBT) indicates the tape-and-reel packaging variant. Confirm the operating temperature grade matches your design requirements. Ensure compatibility with your chosen transformer and resonant tank components based on the official datasheet specifications before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing high-efficiency resonant converters requiring integrated startup and protection. Consider the package thermal performance and pinout compatibility with your PCB layout. Evaluate the control loop stability requirements against the internal compensation capabilities provided by the device architecture.

Power Supply Controllers, Monitors Part Context

This part belongs to Texas Instruments' UCC256xx family of resonant controllers. It is engineered for advanced power management solutions where efficiency and reliability are critical. The series offers various packages and options to suit different power levels and form factors in modern electronic equipment.

Power Supply Controllers, Monitors Replacement Considerations

Check for direct cross-reference availability within the UCC256xx family. Verify pin-to-pin compatibility if substituting with other TI resonant controllers. Ensure functional equivalence in terms of control topology support and protection thresholds.