NCP81610AMNTXG

Overview

The NCP81610AMNTXG is an 8-phase synchronous buck controller optimized for next-generation computing and graphics processors. It supports up to 8 phases with a supply voltage range of 2.8 V to 20 V and a switching frequency from 250 kHz to 1.2 MHz. The device features dual-edge PWM architecture, differential current sensing, and adaptive voltage positioning. It includes a Power Saving Interface (PSI) for dynamic phase shedding and complies with NVIDIA OVR4i+ specifications. Packaged in a compact 40-pin QFN (5x5 mm).

Feature Summary

• Dual-edge PWM multiphase architecture ensures fast transient response and dynamic current balance.
• Integrated Power Saving Interface (PSI) enables automatic phase shedding for high efficiency at light loads.
• True differential current balancing sense amplifiers provide accurate per-phase current monitoring.
• Compliant with NVIDIA OVR4i+ specifications for GPU power applications.

Applications

• GPU and CPU power delivery systems
• Graphics cards
• Desktop and notebook computer applications

Procurement Notes

Verify the specific suffix AMNTXG against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprints for the 40-QFN package. Confirm that the component meets required environmental standards such as RoHS compliance before integration into final designs.

Selection Notes

Select this controller for applications requiring high phase counts and precise current balancing. The dual-edge modulation is suitable for demanding transient loads. Consider the I2C and PWM_VID interface requirements for system control. Verify that the 2.8 V to 20 V input range matches the system power rails.

Part Context

Part of the NCP81610 series, designed specifically for high-performance computing and graphics processing units. It addresses the need for efficient power management in multi-phase configurations. The series integrates advanced features like PSI and differential sensing to meet modern processor power delivery standards.

Replacement Considerations

Check for direct pin-to-pin replacements within the same family or updated revisions. Verify electrical parameter equivalence, especially switching frequency and output current capabilities. Ensure interface compatibility with existing control logic before substitution.

FAQ

What is the maximum number of phases supported by the NCP81610AMNTXG?

The device supports up to 8 phases.

Does the NCP81610 support dynamic phase shedding?

Yes, it includes a Power Saving Interface (PSI) that allows for automatic phase shedding to improve efficiency at light loads.