ISL68144IRAZ

Special Purpose Regulators Overview

The ISL68144IRAZ is a digital dual output, 4-phase configurable PWM controller with PMBus support, designed for Cavium CN99xx server processors. It features a TQFN-40 package (5.0 x 5.0 mm). Input voltage ranges from 4.5 V to 25 V, with a bias voltage of 3.3 V. Operating temperature spans -40°C to +85°C. The device supports adjustable output voltages and currents up to 240 A per phase, utilizing a non-isolated architecture with 1 MHz switching frequency capability.

Special Purpose Regulators Feature Summary

• Digital control architecture supporting flexible multiphase configurations for X+Y phases totaling up to four.
• Integrated PMBus interface for comprehensive monitoring and configuration of power delivery parameters.
• Optimized specifically for high-performance server-class processor power delivery requirements.

Special Purpose Regulators Applications

• Cavium CN99xx server class processor power management
• High-density server motherboard VRM designs
• Multiphase buck converter systems requiring digital control

Special Purpose Regulators Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm package marking and date codes against current production batches. Ensure ESD handling protocols are followed during storage and assembly due to moisture sensitivity level 3 classification. Cross-reference datasheet revisions to ensure compatibility with target system specifications.

Special Purpose Regulators Selection Notes

Select this controller when designing for Cavium CN99xx processors requiring digital multiphase regulation. Compare against ISL68124 series for similar pinouts but different target architectures. Ensure PCB layout supports the 40-lead QFN thermal pad requirements. Verify that the application does not require isolated gate drive capabilities, as this device is non-isolated.

Special Purpose Regulators Part Context

Part of the Renesas Intersil digital power management portfolio targeting high-end computing applications. It succeeds earlier analog controllers by providing programmable digital control loops. The ISL68144 family addresses the dynamic load line requirements of modern multi-core processors.

Special Purpose Regulators Replacement Considerations

ISL68124IRAZ offers similar form factor but targets different processor families. Verify pin-to-pin compatibility and software register mapping before substitution. Check if the replacement supports the specific phase count and current limits required by the design.

Special Purpose Regulators FAQ

What is the maximum number of phases supported?

The controller supports a flexible configuration where the sum of X and Y phases is limited to four total phases.

Is the device isolated?

No, the ISL68144IRAZ utilizes a non-isolated architecture.