ISL95866CHRZ-T 4+3-Phase IMVP8 PWM Controller | Renesas
MPN: ISL95866CHRZ-T ✓ Active| Qty | Unit Price | Extended |
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ISL95866CHRZ-T Overview
A multiphase PWM controller is a specialized voltage-regulator control IC that coordinates multiple power stages to deliver high-current processor rails efficiently. It belongs to the PWM-controller, voltage-regulator, and power-management-IC hierarchy. By distributing current across phases, it supports compact desktop-computing power systems while providing the monitoring, control, and protection functions required by high-performance microprocessors.
The verified product information identifies the ISL95866C as an Intel IMVP8-compliant, two-output controller with configurable phase counts. Its first regulator can be assigned to IA, GT, or GTUS operation according to the power-architecture configuration. The 52-QFN exposed-pad construction supports surface-mount integration and provides a designated underside thermal connection, although electrical, thermal, timing, and pin-function limits must be taken from the manufacturer datasheet before design release.
The controller is intended for desktop CPU and workstation power systems requiring dual high-current rails. Relevant deployments include IA core supplies, integrated graphics supplies, and unsliced graphics rails used by Intel IMVP8 platforms. Renesas positions the device as a complete controller solution; external power stages, inductors, capacitors, MOSFET drivers or power devices, and the processor's specified power-delivery network remain part of the complete regulator design.
A primary design consideration is IMVP8 power sequencing, telemetry, protection, and phase assignment. Engineers should follow the manufacturer reference implementation and datasheet layout guidance for the exposed pad, high-current paths, sensing connections, compensation, and debug interfaces. Pin definitions and exact electrical limits cannot be reconstructed from distributor summaries, so the complete 52-pin map and timing or current thresholds must be verified from the official Renesas documentation.
This page synthesizes verified manufacturer and distributor information, strict drop-in-replacement screening, application context, and practical design guidance. It does not infer missing electrical values or present packaging-only variants as substitutes.
Drop-in alternatives for ISL95866CHRZ-T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISL95866CHRZ-T (same form factor and footprint) — differing in Package, Product Type.
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Request AlternativesISL95866CHRZ-T Maximum Ratings & Electrical Characteristics
| Product Type | 4+3 multiphase R3 PWM voltage-regulator controller |
| Processor Compliance | Intel IMVP8 compliant |
| Supported Processor Rails | IA, GT, GTUS, or GTX |
| Number of Voltage-Regulator Outputs | 2 outputs |
| First VR Phase Configuration | 4, 3, 2, or 1 phases |
| Second VR Phase Configuration | 3, 2, or 1 phases |
| Maximum Configured Phase Count | 7 phases total |
| Control Architecture | Robust Ripple Regulator PWM control |
| Package | 52-QFN, 6x6 mm, exposed pad |
| Mounting Type | Surface mount |
| Target Market | Desktop microprocessor power systems |
ISL95866CHRZ-T 52-qfn, 6x6 mm, exposed pad Pin Configuration Guide
Pin configuration for ISL95866CHRZ-T (52-qfn, 6x6 mm, exposed pad package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for ISL95866CHRZ-T.
Refer to the datasheet for full pin configuration.
Typical Applications
ISL95866CHRZ-T is suitable for 6 applications: Intel IMVP8 Desktop Core IA Rail, Integrated Graphics GT Rail, Unsliced Graphics GTUS or GTX Rail, Dual-Rail Workstation Processor Supply, Desktop Power-Sequencing System, Server-Class IMVP8 Platform.
Intel IMVP8 Desktop Core IA Rail
The ISL95866CHRZ-T fits a desktop IA core domain because its first voltage regulator can be configured for 4, 3, 2, or 1 phases, while the second regulator independently supports 3, 2, or 1 phases. According to Renesas, the controller is compliant with Intel IMVP8 and supports IA processor rails. It can coordinate the external multiphase power network, control, and protection required by a high-current CPU supply. Designers should still validate rail sequencing, current limits, telemetry, compensation, and power-stage sizing against the processor reference design and manufacturer datasheet.
Recommended
Integrated Graphics GT Rail
Renesas identifies the GT rail as a supported domain for the ISL95866CHRZ-T, making the controller relevant to desktop systems that regulate processor graphics separately from the CPU core. Its two-output architecture permits the first VR to use up to four phases and the second up to three, enabling a platform to allocate conversion capability according to loading and design priorities. Integration benefits from coordinated control of both rails, but engineers must verify the target processor's GT requirements, load transitions, current telemetry, and reference power topology before release.
Recommended
Unsliced Graphics GTUS or GTX Rail
The ISL95866CHRZ-T explicitly supports unsliced graphics domains identified as GTUS and GTX, which makes it applicable to desktop-microprocessor platforms that combine or allocate substantial graphics and system power. The controller's independent two-VR structure allows platform designers to configure phase counts rather than relying on one fixed topology. Because the verified material does not provide operating limits or power-stage recommendations, implementation must follow the Renesas ISL95866 documentation and the exact Intel reference design, including transient response, current reporting, protection, and startup sequencing.
Recommended
Dual-Rail Workstation Processor Supply
A workstation-class processor platform can use the ISL95866CHRZ-T when it requires coordinated control of two high-current domains and a configurable total phase architecture. The first regulator accepts four, three, two, or one phase, while the second accepts three, two, or one phase, allowing engineers to match phase allocation to actual rail loading. This architecture is especially relevant when core and graphics behavior must be managed independently. Final power capacity depends on external MOSFETs, magnetics, compensation, and thermal design, none of which can be quantified from the supplied verified excerpts.
Recommended
Desktop Power-Sequencing System
The dual-output IMVP8 focus makes the ISL95866CHRZ-T relevant to desktop power sequencing, where processor rails must start, operate, and shut down according to platform requirements. Renesas states that the controller provides control and protection for two voltage regulators, allowing one IC to supervise the coordinated operating state of two programmable domains. Sequence timing and protection thresholds must be programmed for the target platform rather than copied generically. Engineers should follow the manufacturer's reference implementation for enable sequencing, fault response, telemetry, and debug access.
Recommended
Server-Class IMVP8 Platform
Although Renesas specifies desktop-microprocessor use, the ISL95866CHRZ-T can be evaluated for an IMVP8-based platform that satisfies the same dual-rail control requirements. Its 4+3 maximum phase arrangement provides substantial control flexibility, while separate configurations for the two outputs support asymmetric core and graphics loading. A server or high-end desktop implementation should not assume that controller qualification alone guarantees platform support; thermal performance, transient limits, telemetry interpretation, firmware protocols, and the processor vendor's validation must all match the manufacturer documentation.
Recommended
Recommended Products Summary
Engineering reference data for ISL95866CHRZ-T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 52-QFN, 6x6 mm, exposed pad |
| Brand | Renesas Electronics |
| Product Type | 4+3 multiphase R3 PWM voltage-regulator controller |
| Processor Compliance | Intel IMVP8 compliant |
| Voltage-Regulator Outputs | 2 outputs |
| First VR Phase Options | 4, 3, 2, or 1 phases |
| Second VR Phase Options | 3, 2, or 1 phases |
| Supported Processor Domains | IA, GT, GTUS, and GTX |
| Target Application | Desktop microprocessor power systems |
Key Differentiators
- Maximum configured multiphase capacity (vs Unverified generic 52-QFN IMVP8 controllers)
- Independent dual-output architecture (vs Unverified single-output 52-QFN alternatives)
- Explicit desktop-domain coverage (vs Unverified controllers lacking published IA and GT domain support)
Design Notes
Treat the exposed pad as both an electrical connection and the principal thermal path. Follow the Renesas package drawing for pad geometry, via pattern, solder-mask clearance, and copper area; exact land-pattern dimensions are not available in the supplied excerpts. Validate junction temperature across maximum processor load, line transients, ambient temperature, and board airflow rather than relying on controller power alone, because the external MOSFETs and magnetics may dissipate most of the system heat.
Design each regulated rail as a complete multiphase power system rather than treating the ISL95866CHRZ-T as a standalone regulator. Select external power devices, inductors, capacitors, current-sense elements, and compensation for the configured phase count and target load. Use Renesas's ISL95866 reference implementation to coordinate PWM timing, slew behavior, fault response, and telemetry; the supplied excerpts do not provide enough electrical data to calculate component values safely.
Place high-current switching loops compactly and keep the controller's sensitive sensing, compensation, and telemetry routes away from power-stage switching nodes. Match current-sense traces according to the reference design, use the package's exposed-pad via arrangement, and verify differential-pair geometry where applicable. Do not invent pin names or route assignments from the distributor summaries; cross-check all 52 connections against the official datasheet before release.
Do not assume that a part in the same 52-QFN outline is interchangeable. A drop-in candidate must match every exposed-pad connection, supply pin, gate-drive output, sensor input, configuration input, telemetry interface, and protection function. Also avoid treating the non-T ISL95866CHRZ listing as identical until the order-code differences are confirmed. Platform substitution should therefore begin with a Renesas-approved or manufacturer-validated cross-reference.
Compliance Information
The supplied excerpts do not state RoHS, REACH, halogen-free, lead-free, or conflict-minerals status. AEC-Q100 is treated as not applicable because this is a desktop microprocessor controller, not an identified automotive-qualified device.
