FDMF5062

Overview

The FDMF5062 is a Smart Power Stage (SPS) module integrating optimized PowerTrench MOSFETs with an advanced driver IC, current sensor, and temperature monitor. Designed for high-current, high-frequency synchronous buck DC-DC converters, it features a 39-PowerVFQFN package. Key electrical parameters include a maximum instantaneous peak current of 70 A, breakdown voltages of 30 V and 25 V, and operation at switching frequencies up to 1 MHz. It supports PWM levels of 3.3 V and 5 V with a typical VIN of 12 V.

Feature Summary

• Integrates current monitoring (IMON) output signal for real-time module current reporting, replacing inductor DCR or resistor sense methods.
• Includes integrated temperature monitoring (TMON) providing accurate thermal data with a defined voltage slope.
• Features catastrophic fault detection including a Thermal Flag (OTP) for over-temperature conditions.
• Utilizes PowerTrench MOSFETs to ensure clean voltage waveforms and reduced ringing.

Applications

• CPU and Memory Voltage Regulators
• High-Current Multiphase Voltage Regulators
• Artificial Intelligence Add-On Cards
• Server CPUs, Storage, Telecom
• DC/DC Power Module

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and tape/reel specifications. Confirm RoHS compliance status and material declarations prior to integration. Ensure the selected variant matches the required voltage and current ratings for the target application design.

Selection Notes

Select this component for designs requiring high efficiency at low duty cycles (10% to 15%). The integrated IMON and TMON signals simplify protection circuitry by eliminating external sensing components. Verify compatibility with the target system's PWM control logic levels and ensure the 39-PowerVFQFN footprint fits the PCB layout constraints.

Part Context

This device belongs to onsemi’s next-generation Smart Power Stage (SPS) family. It combines power MOSFETs with a driver IC to optimize dynamic performance and reduce system parasitics. The module is engineered for compactness and reliability in demanding power conversion environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

How does the FDMF5062 handle current sensing?

It provides an integrated current monitoring (IMON) output signal that reports real-time module current, allowing it to replace traditional inductor DCR or resistor sense methods.

What thermal monitoring capabilities are included?

The module includes accurate thermal monitoring (TMON) that outputs 0.8 V at 25°C with an 8 mV/°C slope, along with a Thermal Flag (OTP) for over-temperature conditions.

What is the maximum switching frequency supported?

The FDMF5062 is optimized for switching frequencies up to 1 MHz.