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Renesas ISL6366IRZ
- Part No.:
- ISL6366IRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 60-VFQFN Exposed Pad
- Datasheet:
-
ISL6366IRZ.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 60QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,226
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Product details
Overview
ISL6366IRZ from Intersil is a dual-output VR12/IMVP7-compliant PWM controller for microprocessor voltage regulation, featuring 6-phase + 1-phase topology, ±0.5% closed-loop system accuracy over load/line/temperature, EAPP modulation for fast transient response, and SVID bus interface for PSI#-driven phase dropping. It regulates core/memory (VR0) and graphics/system agent/I/O (VR1) rails in high-performance computing platforms.
For engineers reviewing the ISL6366IRZ datasheet, ISL6366IRZ pinout, ISL6366IRZ application, or ISL6366IRZ equivalent, key selection criteria include VR12/IMVP7 compliance, programmable phase count (1–6 for VR0, fixed 1 for VR1), droop control via DCR/resistor sensing, thermal-compensated current monitoring, and SVID-based dynamic VID compensation with PSI# support.
Technical Context
The ISL6366IRZ implements two independent PWM control loops: VR0 supports 1–6 phases with coupled-inductor compatibility and active phase adding/dropping via PSI# signals; VR1 operates in single-phase mode with no-droop DVS and diode emulation. Each phase supports up to 1MHz switching frequency with independent oscillators.
Current sensing uses either precision external resistors or DCR of output inductors, with integrated thermal compensation via NTC thermistors on TM/TMS pins. Load-line (droop) programming is achieved by sinking current from FB pin proportional to sensed load, enabling tight voltage positioning across load range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Compliance | Intel VR12/IMVP7 specification compliant - ensures interoperability with Intel CPUs requiring SVID communication and PSI#-based power state transitions. |
| Output Configuration | Dual output: VR0 = 1–6-phase for core/memory; VR1 = single-phase for graphics/system agent/I/O - enables discrete rail optimization without shared control logic. |
| System Accuracy | ±0.5% closed-loop voltage accuracy over full load, line, and temperature - guarantees stable CPU VDD under dynamic workloads and thermal drift. |
| Modulation Scheme | Enhanced Active Pulse Positioning (EAPP) - reduces beat-frequency oscillation during transients and improves phase current balance via variable-frequency linear control. |
| Current Sensing | Differential DCR or resistor-based sensing with integrated thermal compensation - enables accurate droop programming and channel-current balancing across temperature. |
| Phase Control | Programmable 1- or 2-phase operation in PSI1; single-phase with diode emulation in PSI2/3 - reduces magnetic and switching losses at light load while maintaining fast wake-up response. |
| SVID Interface | Full SerialVID support including IMAX, TMAX, BOOT, ADDRESS OFFSET registers - allows dynamic VID updates and coordinated power-state negotiation with CPU. |
Pinout & Package
ISL6366IRZ is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per Intersil FN6964 Rev 1.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary supply input | Accepts 5V or 12V bias rail to power internal circuitry and gate drivers - must be decoupled locally for noise immunity. |
| FB | Feedback reference node | Sinks current proportional to load for droop programming; connects to voltage divider at regulated output - enables precise load-line implementation. |
| IMON | Current monitor output | Analog current-sense signal reporting total VR0 load to CPU via IMON pin - used by processor for thermal/power management decisions. |
| SVID_DATA / SVID_CLK | SVID bus interface | Two-wire serial interface for dynamic VID updates, PSI# handshake, and register access - required for VR12/IMVP7 compliance. |
| PSI# | Power state indicator input | Active-low signal from CPU indicating entry into PSI1/PSI2/PSI3 states - triggers automatic phase reduction and diode emulation. |
| TM / TMS | Thermal monitor inputs | Accept NTC thermistor voltage for digitized temperature reading - enables thermal compensation of current sense and overtemperature protection. |
Key Features
| Feature | Design Value |
|---|---|
| VR12/IMVP7 SerialVID Compliance | Enables direct integration with Intel 2nd–4th Gen Core processors and compatible chipsets without protocol translation or firmware adaptation. |
| EAPP Modulation with Variable Frequency | Eliminates beat-frequency oscillation during load steps and maintains uniform phase current distribution even under large transients. |
| Dual Independent Oscillators | Allows VR0 and VR1 to operate at different frequencies (up to 1MHz per phase) - optimizes efficiency vs. EMI trade-offs per rail. |
| DCR or Resistor Current Sensing | Supports cost-effective inductor-integrated sensing or high-precision shunt-based measurement - both with on-chip thermal compensation for <±2% current error over –40°C to +125°C. |
| Programmable Droop & Diode Emulation | Configurable load-line slope and discontinuous conduction mode in light-load states - sustains >85% efficiency at 5% load without external circuitry. |
Applications
| Server CPU Voltage Regulation | Desktop Graphics Rail Control |
|---|---|
Use Scenario: Regulating core voltage for multi-core Xeon or Core i7 processors in 1U/2U rack servers with strict VR12 timing and SVID requirements. IC Role / Device Role / Timing Role: Primary VR0 controller managing 6-phase buck conversion with active phase dropping during C-states. Use Value: Maintains ±0.5% voltage accuracy across 0–150A load range while reducing light-load losses via PSI#-synchronized diode emulation. | Use Scenario: Providing tightly regulated 1.05V–1.2V supply to discrete GPU or integrated graphics engine in high-end desktop motherboards. IC Role / Device Role / Timing Role: VR1 controller delivering single-phase output with DVS compensation and no-droop regulation. Use Value: Achieves fast dynamic VID response (<5µs) and eliminates voltage deviation during GPU clock boosting without additional compensation components. |
| Laptop System Agent Power | Workstation Memory Subsystem |
Use Scenario: Supplying power to system agent (SA) and PCIe root complex in mobile workstation platforms with thermal constraints. IC Role / Device Role / Timing Role: VR1 controller operating in single-phase mode with thermal-compensated current sensing via TM/TMS pins. Use Value: Enables accurate load-line tracking and overcurrent protection within 5mm² PCB area while supporting PSI2/3 entry for platform-wide power gating. | Use Scenario: Delivering DDR3/DDR4 memory VDDQ rail in dual-CPU workstations requiring matched phase count and droop characteristics across sockets. IC Role / Device Role / Timing Role: VR0 controller configured for 3-phase operation per socket with coupled-inductor support and synchronized phase adding/dropping. Use Value: Ensures <1% inter-rail voltage mismatch during memory bandwidth bursts and supports pre-charged startup for hot-plug DIMM compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output VR12/IMVP7 controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR3567BMTRPBF | Single-die dual-output controller with identical VR12/IMVP7 compliance, but uses digital current sensing and lacks EAPP modulation. | Requires external ADC for IMON reporting; supports only resistor-based current sensing - no DCR option. | Preferred when digital telemetry and PMBus interface are needed over analog IMON and EAPP transient performance. |
| TPS53679RSLR | TI dual-output controller supporting VR12.5/IMVP8, higher max phase count (8+1), and integrated MOSFET drivers - no exposed thermal pad in 40-pin QFN. | Targets newer CPU generations; lacks VR12 backward compatibility and SVID PSI# mapping for legacy platforms. | Select when upgrading to IMVP8-compliant CPUs or requiring higher peak current capability (>200A). |
Compared with IR3567BMTRPBF and TPS53679RSLR, the ISL6366IRZ uniquely combines EAPP modulation for superior transient response, DCR current sensing flexibility, and full VR12/IMVP7 SVID register compatibility - making it optimal for cost-sensitive, thermally constrained server and desktop designs requiring proven stability with Intel 2nd–4th Gen processors.
Availability
ISL6366IRZ is available at Aetrix Electronics and suitable for server motherboard design, high-end desktop VRM development, and workstation power architecture requiring stable component supply, long-term lifecycle support, and VR12/IMVP7 certification readiness.
Supply support for ISL6366IRZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and power management ICs for computing, industrial, and communications markets.
The ISL6366IRZ belongs to Intersil's VR12/IMVP7 PWM controller product line, engineered specifically for Intel-compatible microprocessor voltage regulation with emphasis on transient response, light-load efficiency, and SVID protocol fidelity.
FAQ
What is the primary function of the ISL6366IRZ in a CPU power delivery system?
The ISL6366IRZ serves as a dual-output VR12/IMVP7-compliant PWM controller that regulates both the microprocessor core/memory rail (VR0, 1–6 phases) and peripheral rail (VR1, single-phase). It executes droop control, phase management via PSI#, and SVID-based dynamic VID updates - all critical for Intel CPU power sequencing and efficiency across load states. The ISL6366IRZ integrates these functions in a single 48-pin QFN package.
Does the ISL6366IRZ support DCR-based current sensing, and how is thermal compensation handled?
Yes, the ISL6366IRZ supports both precision resistor and DCR-based differential current sensing for VR0. Thermal compensation is implemented via dedicated TM and TMS pins that interface with NTC thermistors; the internal circuitry digitizes temperature data and adjusts current sense gain to maintain <±2% error from –40°C to +125°C. This ensures accurate droop programming and overcurrent protection across operating conditions - a core capability of the ISL6366IRZ.
How does the ISL6366IRZ achieve fast transient response without increasing output capacitance?
The ISL6366IRZ achieves fast transient response through its proprietary Enhanced Active Pulse Positioning (EAPP) modulation scheme, which dynamically adjusts PWM pulse position and frequency during load steps to suppress beat-frequency oscillation and improve phase current balance. This allows stable regulation with fewer bulk capacitors - a key advantage confirmed in VR12 reference designs using the ISL6366IRZ.
Can the ISL6366IRZ operate in single-phase mode for both outputs, and what triggers this behavior?
No - the ISL6366IRZ has fixed topology: VR0 supports 1–6 phases, while VR1 is strictly single-phase. Single-phase operation for VR0 is triggered only by PSI# assertion from the CPU during low-power states (PSI1/PSI2/PSI3). The ISL6366IRZ does not support single-phase operation on VR1, as it is architected exclusively for graphics/system agent/I/O rails requiring constant single-phase regulation and DVS compensation.
Is the ISL6366IRZ RoHS compliant, and what is its package type and thermal performance?
Yes, the ISL6366IRZ is Pb-free and RoHS compliant per Intersil documentation. It uses a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with an exposed thermal pad for enhanced heat dissipation. Thermal performance is optimized via dual TM/TMS inputs for real-time compensation and internal thermal shutdown - enabling reliable operation up to +125°C junction temperature, as validated in ISL6366IRZ reference designs.
ISL6366IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 60-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, Intel IMVP-7, VR12™
- Voltage - Input:
- 4.75V ~ 5.25V
- Number of Outputs:
- 2
- Voltage - Output:
- 0.25V ~ 1.52V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 60-QFN (7x7)
ISL6366IRZ FAQ
1.How can I place an order for ISL6366IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6366IRZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL6366IRZ reliable?
The price and inventory of ISL6366IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6366IRZ is usually 5 days.
3.What payment methods are accepted for ISL6366IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6366IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6366IRZ?
ISL6366IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6366IRZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL6366IRZ?
For technical support, including ISL6366IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6366IRZ requirements.
6.How does Aetrix verify that ISL6366IRZ is sourced from the original manufacturer or authorized distributors?
All ISL6366IRZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL6366IRZ meets industry standards.
7.What is the process for return or replacement of ISL6366IRZ?
All ISL6366IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6366IRZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL6366IRZ part is unused and in its original packaging.
Return procedure for ISL6366IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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