NCP81611AMNTXG

$3.01

Description：NVIDIA OVR4I+ CONTROLLER
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:d88bfa7ddb99 Category: DC DC Switching Controllers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：NVIDIA OVR4I+ CONTROLLER
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：PWM
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：4
Voltage - Supply (Vcc/Vdd)：2.8V ~ 20V
Frequency - Switching：250kHz ~ 1.2MHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：PSI
Control Features：Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start
Operating Temperature：-40°C ~ 100°C (TA)
Mounting Type：Surface Mount
Package / Case：40-VFQFN Exposed Pad
Supplier Device Package：40-QFN (5x5)
Grade：-
Qualification：-

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NCP81611AMNTXG

Overview

The NCP81611AMNTXG is a four-phase synchronous buck switching controller designed for NVIDIA OVR4I+ applications. It operates with a supply voltage range of 2.8V to 20V and supports switching frequencies from 250kHz to 1.2MHz. The device features integrated current limit, enable, frequency control, power good, slope compensation, and soft-start functions. It utilizes I²C and PSI serial interfaces for configuration and monitoring.

Feature Summary

Supports four-phase synchronous buck topology with integrated control logic
Configurable via I²C and PSI serial interfaces for system integration
Includes comprehensive protection and management features such as soft-start and power good signaling

Applications

NVIDIA OVR4I+ controller systems
Multi-phase DC-DC conversion for high-performance computing
Server and workstation power distribution networks

Procurement Notes

Verify the specific suffix AMNTXG against official onsemi documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the 40-QFN(5x5) package. Confirm that the I²C/PSI interface requirements match the host controller's capabilities before finalizing procurement.

Selection Notes

Select this component when a four-phase synchronous buck solution is required for NVIDIA OVR4I+ architectures. Consider the 250kHz to 1.2MHz adjustable frequency range for optimizing efficiency and component size. Verify that the 2.8V to 20V supply range aligns with the system's available rails and that the 40-VFQFN package fits the design constraints.

Part Context

This part belongs to the NCP81611A series of power management ICs from onsemi. It is categorized under Switching Controllers within the PMIC family. The device is specifically engineered for multi-phase voltage regulation in demanding digital load applications, offering integrated control to reduce external component count.