ISL95866HRZ

Special Purpose Regulators Overview

The ISL95866HRZ is a 4+3 multi-phase PWM controller compliant with Intel IMVP8 standards, designed for desktop microprocessors. It operates from a 9V to 20V supply and delivers outputs up to 1.52V. The device integrates two voltage regulators: VR A supports 4, 3, 2, or 1 phases, while VR B supports 3, 2, or 1 phases. It utilizes Robust Ripple Regulator (R3) technology for fast transient response and includes three +12V gate drivers. Communication occurs via SMBus.

Special Purpose Regulators Feature Summary

• Implements R3 modulation for variable switching frequency and improved light-load efficiency
• Integrates three +12V gate drivers for high-side MOSFET control
• Supports DCR current sensing with temperature compensation or resistive sensing
• Features programmable SVID addresses for flexible SKU support

Special Purpose Regulators Applications

• Desktop microprocessor core power supplies
• Integrated graphics processor power stages
• Unpartitioned graphics power solutions

Special Purpose Regulators Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the target motherboard's SMBus implementation and thermal design requirements before finalizing procurement decisions.

Special Purpose Regulators Selection Notes

Select this component for designs requiring a single-chip solution for combined CPU and GPU power delivery. It is suitable for applications needing configurable phase counts to optimize cost and board space compared to dual-chip architectures.

Special Purpose Regulators Part Context

This part belongs to the ISL95866 series of multi-phase controllers. It serves as an alternative to discrete controller solutions, consolidating control logic and gate driving capabilities into a single QFN-52 package to reduce system complexity.

Special Purpose Regulators Replacement Considerations

Consult official substitution guides for pin-compatible alternatives within the Renesas portfolio. Verify that any replacement maintains IMVP8 compliance and supports the required phase configurations.