NCP5208DR2

Overview

The NCP5208DR2 is a dual high-side gate driver designed for driving external N-channel MOSFETs in synchronous buck converter applications. It integrates two independent drivers with adjustable dead-time control to prevent shoot-through currents. The device operates from a supply voltage range of 4.75V to 18V and supports input logic levels compatible with standard CMOS and LVTTL interfaces. It features under-voltage lockout (UVLO) protection for both the supply and bootstrap voltages, ensuring reliable operation during startup and fault conditions.

Feature Summary

• Dual independent high-side gate drivers with integrated dead-time control
• Adjustable dead-time to optimize switching performance and efficiency
• Integrated under-voltage lockout for supply and bootstrap protection
• Compatible with standard digital logic input signals

Applications

• Synchronous buck converters in server and data center power supplies
• Point-of-load (POL) regulators for high-current applications
• Industrial motor control systems requiring efficient power conversion
• Telecommunications equipment power management modules

Procurement Notes

Verify the specific suffix DR2 indicates the tape and reel packaging configuration when ordering. Confirm that the operating temperature range and thermal requirements align with your system design constraints. Ensure compatibility with the intended PCB layout for optimal thermal dissipation and signal integrity. Cross-reference the datasheet revision date to ensure access to the latest electrical characteristics and application notes.

Selection Notes

Select this component for applications requiring precise dead-time control between high-side and low-side switches. Consider the package thermal performance if operating near maximum current limits. Evaluate the input logic voltage levels to ensure seamless integration with the controller IC. Verify that the bootstrap circuit design meets the required voltage thresholds for reliable high-side driving.

Part Context

This part belongs to onsemi's NCP52xx series of gate drivers, which are optimized for high-efficiency power conversion topologies. The series offers various configurations including single and dual drivers with different feature sets. The NCP5208 specifically targets synchronous rectification applications where minimizing conduction losses through accurate timing control is critical for overall system efficiency.

Replacement Considerations

Direct replacements may include other dual high-side drivers from onsemi or competitors with similar pinouts and electrical specifications. Verify that any substitute maintains compatible dead-time adjustability and UVLO thresholds. Check for equivalent package dimensions and thermal characteristics to ensure mechanical fit. Review the new component's datasheet for differences in drive strength or propagation delay that might affect loop stability.