ISL6558IR

DC DC Switching Controllers Overview

The ISL6558IR is a synchronous buck DC-DC switching controller manufactured by Renesas Electronics Corporation. It features four independent output channels designed for high-current applications, supporting output currents up to 120 A. The device operates with an adjustable switching frequency ranging from 80 kHz to 1.5 MHz and accepts a supply voltage between 4.75 V and 5.25 V. It utilizes a QFN-EP-20 package and supports output voltages from 800 mV to 5 V within an operating temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Provides four independent PWM control outputs for multi-phase power delivery
• Supports wide-range switching frequency adjustment from 80 kHz to 1.5 MHz
• Integrates comprehensive protection and monitoring features including power good signals

DC DC Switching Controllers Applications

• High-performance server and workstation power supplies
• Graphics processing unit (GPU) core voltage regulation
• Central processing unit (CPU) VRM designs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IR' against the official datasheet to confirm the package type and temperature rating. Confirm RoHS compliance status as legacy Intersil parts may vary. Check current availability as this component series may be discontinued or subject to long lead times. Ensure the ordering part number matches the required reel quantity if purchasing in tape and reel format.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring four synchronized phases with high current capability. Compare the 800 mV to 5 V output range against target load requirements. Evaluate the thermal performance of the QFN-EP-20 package for the intended enclosure. Verify compatibility with external MOSFETs for the specified 120 A load capacity.

DC DC Switching Controllers Part Context

The ISL6558 belongs to the Endura family of power management ICs from Renesas (formerly Intersil). This family targets demanding computing platforms requiring efficient, compact, and reliable power solutions. The IR variant specifically denotes the industrial temperature grade and QFN packaging option within the broader ISL6558 product line.

DC DC Switching Controllers Replacement Considerations

Consult the official Renesas cross-reference guide for verified substitutes. Potential alternatives include newer generations of the Endura series or compatible controllers from other manufacturers, provided pinouts and electrical specifications match exactly.