NCP81521MNTXG

Overview

The NCP81521MNTXG is a multi-phase synchronous buck controller from onsemi, designed for high-performance CPU power delivery. It supports up to eight output phases and operates within an input voltage range of 4.75 V to 5.25 V. The device features a programmable switching frequency between 180 kHz and 1.17 MHz. It complies with the Intel IMVP9.1 specification and includes integrated gate drivers for synchronous MOSFETs. The component is housed in a QFN-52 package and functions as a complete solution for generating core voltages.

Feature Summary

• Complies with Intel IMVP9.1 specifications for CPU core voltage regulation
• Supports up to eight output phases for high current delivery
• Integrates gate drivers for synchronous buck topology
• Features programmable switching frequency for optimization

Applications

• Intel Core processor core voltage generation
• High-density server motherboard power systems
• Workstation mainboard VRM designs
• Industrial computing platform power management

Procurement Notes

Verify that the specific part number matches the required IMVP9.1 revision and phase count. Confirm the package type corresponds to the design footprint. Ensure compatibility with the target processor's VID interface requirements before finalizing procurement orders.

Selection Notes

Select this controller when designing for processors requiring IMVP9.1 compliance. Consider the maximum phase count relative to peak load currents. Evaluate thermal performance based on the QFN-52 package characteristics. Verify input voltage stability within the specified 4.75 V to 5.25 V range.

Part Context

This component belongs to the NCP815xx series of multi-phase controllers by onsemi. It is engineered specifically for next-generation Intel processors. The series provides scalable solutions for various power levels. It integrates control logic and driver stages into a single compact package.

Replacement Considerations

NCP81565MNTXG is documented as the industrial version of this part.