ISL95813HRZ-T

Special Purpose Regulators Overview

The ISL95813HRZ-T is a single-phase core controller designed for VR12.6 compliant Intel microprocessor power supplies. It operates with switching frequencies of 425 kHz, 550 kHz, or 700 kHz and supports Enhanced Cool Operation (ECO) and Power Reduction Option (PRO). The device provides a tightly regulated output voltage programmable via a high-speed serial bus interface. It utilizes Robust Ripple Regulator R3 technology for fast transient response and features Discontinuous Conduction Mode for light-load efficiency.

Special Purpose Regulators Feature Summary

• Implements Robust Ripple Regulator R3 technology for enhanced transient response and settling time compared to traditional modulation schemes.
• Supports variable frequency topology enabling natural period stretching and Discontinuous Conduction Mode for improved light-load efficiency.
• Provides differential remote voltage feedback and DCR current sensing with single NTC thermal compensation.
• Allows user-programmable parameters including boot voltage, IMAX, TMAX, voltage transition slew rate, and switching frequency.

Special Purpose Regulators Applications

• Notebook Computers
• Tablets
• Ultrabooks
• All-In-One Systems

Special Purpose Regulators Procurement Notes

Verify the specific suffix HRZ-T against official Renesas documentation to confirm tape-and-reel packaging and moisture sensitivity handling requirements. Confirm that the component remains available or identify approved alternatives if the part status indicates discontinuation. Ensure compatibility with VR12.6 specifications for target Intel processors before finalizing procurement decisions.

Special Purpose Regulators Selection Notes

Select this controller for single-phase core power applications requiring VR12.6 compliance. Consider its variable frequency operation and ECO/PRO options when optimizing for light-load efficiency in portable devices. Evaluate the 20-lead QFN package constraints against board space limitations. Verify support for required current sensing methods and thermal compensation strategies during the design phase.

Special Purpose Regulators Part Context

This component belongs to the Intersil/Renesas portfolio of switching controllers specifically engineered for Intel processor voltage regulation. It represents the evolution toward smaller form factors while maintaining robust performance through advanced ripple regulation techniques. The series targets mobile computing platforms where power efficiency and transient response are critical design parameters.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult official Renesas cross-reference tools or engineering change notices for verified alternatives if this component is discontinued or unavailable for production.

Special Purpose Regulators FAQ

What modulation technology does the ISL95813 utilize?

It uses Intersil's Robust Ripple Regulator R3 Technology, which provides faster transient response and settling time compared to traditional modulation schemes.

How does the ISL95813 improve efficiency at light loads?

Its variable frequency topology allows for natural period stretching into Discontinuous Conduction Mode (DCM), increasing efficiency and saving power in light load situations.