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Renesas ISL6364AIRZ-T
- Part No.:
- ISL6364AIRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6364AIRZ-T.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,353
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Product details
Overview
ISL6364AIRZ-T from Renesas (formerly Intersil) is a dual-output, VR12/IMVP7-compliant PWM controller for microprocessor voltage regulation. It delivers 4+1 phase control (4-phase for core/memory VR0, 1-phase for graphics/I/O VR1), supports AUTO phase shedding, EAPP modulation, and ±0.5% closed-loop system accuracy over load, line, and temperature.
For engineers reviewing the ISL6364AIRZ-T datasheet, ISL6364AIRZ-T pinout, ISL6364AIRZ-T application, or ISL6364AIRZ-T equivalent, key selection considerations include VR12/IMVP7 SVID compliance, droop control via DCR/resistor sensing, PSI#-driven phase reduction (PSI1/PSI2), thermal compensation via TMS/TM pins, and differential remote sensing for high-accuracy regulation in server and desktop CPU power delivery.
Technical Context
The ISL6364AIRZ-T implements two independent PWM outputs: VR0 (1–4-phase, supports coupled inductors and phase doublers like ISL6617/11A) and VR1 (single-phase with DVC and no-droop mode). It uses Enhanced Active Pulse Positioning (EAPP) for linear transient response and beat-frequency suppression during load steps.
It integrates precision current sensing (via IMON/IMONS pins), programmable slew rate for dynamic VID on VR0, and dual thermal monitoring with NTC-based digitized temperature feedback for real-time current-sense compensation - all compliant with Intel VR12/IMVP7 serial VID bus timing and register definitions (IMAX, TMAX, BOOT, ADDRESS OFFSET).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual output: VR0 (1–4-phase core/memory), VR1 (1-phase graphics/I/O) |
| VR12/IMVP7 Compliance | Fully compliant with Intel VR12/IMVP7 SVID protocol, including PSI#, IMON reporting, and register programming |
| Closed-loop Accuracy | ±0.5% over full load, line, and temperature range - enables tight CPU VDD tolerance without external calibration |
| Current Sensing | Supports both precision resistor and DCR sensing with integrated programmable gain - enables accurate droop programming and channel balancing |
| Phase Shedding | Auto-shedding to 1–2 phases in PSI1, single-phase + diode emulation in PSI2/3 - reduces core & switching losses at light load |
| Thermal Monitoring | Dual NTC inputs (TM/TMS) with internal digitization - provides per-regulator thermal compensation of current sense elements |
| Max Oscillator Frequency | Up to 2MHz per phase - allows smaller magnetics and optimized efficiency vs. cost trade-off |
Pinout & Package
ISL6364AIRZ-T is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per the official ISL6364A datasheet (FN7922), including dedicated SVID bus interface (SCLK, SDATA), IMON/IMONS current monitor outputs, TM/TMS thermistor inputs, and separate FB/REF for VR0 and VR1 feedback paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary supply input | Accepts 5V or 12V bias rail to power internal circuitry and gate drivers |
| FB0 / FB1 | Feedback inputs | Differential remote sense inputs for VR0 and VR1 outputs - eliminate ground offset errors |
| IMON / IMONS | Current monitor outputs | Provide analog current signals to CPU for IOUT register reporting and PSI# triggering |
| TM / TMS | Thermal monitor inputs | Connect to NTC thermistors for digitized temperature measurement and current-sense compensation |
| SCLK / SDATA | SVID bus interface | Serial interface for VR12/IMVP7 communication - enables dynamic VID, PSI#, and register access |
| EN0 / EN1 | Enable inputs | Threshold-sensitive enables for coordinated startup sequencing with other rails |
Key Features
| Feature | Design Value |
|---|---|
| EAPP Modulation | Variable-frequency, linear-pulse positioning during transients - eliminates beat-frequency oscillation and improves phase current balance |
| Auto Phase Shedding | Dynamic reduction to 1–2 phases in PSI1 and single-phase + diode emulation in PSI2/3 - cuts light-load losses without sacrificing transient recovery |
| Droop & Diode Emulation | Programmable droop slope for VR0; selectable diode emulation for VR1 - maintains regulation accuracy while enabling discontinuous conduction mode |
| Dual Thermal Compensation | Independent TM/TMS inputs with internal ADC - corrects current-sense gain drift across temperature for stable OCP and load-line accuracy |
| Start-up into Pre-Charged Load | Soft-start logic prevents reverse current flow when output capacitors are pre-biased - avoids inrush stress on MOSFETs and inductors |
Applications
| Server CPU Power Delivery | Desktop High-Performance Platform |
|---|---|
Use Scenario: Regulating core voltage for multi-core Xeon or EPYC processors under dynamic workloads with rapid load steps. IC Role / Device Role / Timing Role: Dual-output VR12/IMVP7 PWM controller managing 4-phase VR0 (core) and 1-phase VR1 (system agent/I/O) with SVID coordination. Use Value: EAPP modulation and auto phase shedding maintain <1% voltage deviation during 50A/µs transients while achieving >90% efficiency at 10% load. | Use Scenario: Powering enthusiast-grade desktop CPUs (e.g., Intel Core i9/K-series) with aggressive turbo boost and AVX-heavy loads. IC Role / Device Role / Timing Role: Primary voltage regulator controller implementing droop control, dynamic VID, and PSI#-driven phase management per VR12 spec. Use Value: ±0.5% closed-loop accuracy and differential remote sensing ensure stable VDD under PCB trace IR drop, critical for overclocking stability. |
| Laptop CPU Voltage Regulation | Workstation GPU/System Agent Supply |
Use Scenario: Delivering tightly regulated core voltage to mobile CPUs with strict thermal envelope and battery-life constraints. IC Role / Device Role / Timing Role: VR12-compliant controller enabling PSI2/3 ultra-low-power modes with single-phase operation and diode emulation. Use Value: Light-load efficiency improved by >35% vs. fixed-phase design due to magnetic loss reduction and discontinuous conduction support. | Use Scenario: Providing dedicated low-noise, fast-transient power to GPU memory controllers or system agent logic in dual-socket workstations. IC Role / Device Role / Timing Role: VR1 output configured in no-droop DVC mode with independent oscillator - decouples GPU rail dynamics from CPU VR0. Use Value: Independent 2MHz oscillator and DVC compensation enable sub-100ns response to GPU memory burst currents without affecting CPU rail stability. |
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 |
|---|---|---|---|
| ISL6364CRZ-T | Same architecture and pinout; differs only in temperature grade (–40°C to +85°C vs. –40°C to +105°C for ISL6364AIRZ-T) | Targeted for commercial-temperature industrial or embedded systems, not extended-temp server environments | Select ISL6364CRZ-T only if ambient operating temperature remains ≤85°C and extended thermal margin is unnecessary |
| RT8803AZSP | Single-chip dual-output VR12 controller with integrated MOSFET drivers; lacks EAPP modulation and has fixed 1.5MHz max frequency | Better suited for cost-sensitive, space-constrained designs where driver integration offsets loss of transient optimization | Choose RT8803AZSP when board area and BOM count are prioritized over peak transient performance and light-load efficiency tuning |
Compared with ISL6364CRZ-T, the ISL6364AIRZ-T offers extended temperature operation essential for server CPU VRMs; versus RT8803AZSP, it delivers superior transient response via EAPP and finer-grained phase control - critical for high-end computing platforms demanding VR12 compliance and adaptive efficiency.
Availability
ISL6364AIRZ-T is available at Aetrix Electronics and suitable for server motherboard development, high-performance desktop platform design, and workstation CPU voltage regulation requiring stable component supply, long-term lifecycle support, and VR12/IMVP7 specification adherence.
Supply support for ISL6364AIRZ-T 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
Renesas Electronics acquired Intersil in 2017 and continues its high-performance analog and power management IC portfolio. Intersil was known for precision power, thermal, and interface solutions targeting computing and industrial markets.
The ISL6364AIRZ-T belongs to Intersil's VR12/IMVP7-compliant PWM controller family, designed specifically for next-generation CPU/GPU voltage regulation in servers, desktops, and workstations - emphasizing transient fidelity, adaptive efficiency, and SVID interoperability.
FAQ
What is the operating temperature range for the ISL6364AIRZ-T?
The ISL6364AIRZ-T is rated for operation from –40°C to +105°C ambient temperature. This extended range supports deployment in high-power-density server VRMs and high-end desktop motherboards where local hot spots near CPU sockets exceed 85°C. The device's dual thermal monitoring (TM/TMS) inputs provide real-time compensation to maintain current-sense accuracy across this full range. All specifications in the FN7922 datasheet apply within this temperature window.
Does the ISL6364AIRZ-T require external firmware or NVM programming?
No, the ISL6364AIRZ-T is firmware-free and requires no external NVM programming. Configuration is performed dynamically via the SVID bus using standard VR12/IMVP7 commands (e.g., writing to IMAX, TMAX, BOOT registers). Its "NVM and Firmware Free" architecture eliminates boot-time delays and simplifies qualification - all settings are established at power-on through host processor interaction. This applies identically across all ISL6364A variants, including the ISL6364AIRZ-T.
How does the ISL6364AIRZ-T implement droop control?
The ISL6364AIRZ-T implements droop control by sensing output current via either a discrete sense resistor or inductor DCR, then injecting a precision current into the FB0 pin to develop a voltage drop across the feedback resistor. This creates a controlled VOUT vs. IOUT slope (load line) that meets VR12 requirements. Droop is programmable via SVID registers and supported independently on VR0; VR1 supports no-droop DVC mode. The ISL6364AIRZ-T's ±0.5% closed-loop accuracy ensures droop slope remains stable across temperature and line variations.
Can the ISL6364AIRZ-T be used with coupled inductors?
Yes, the ISL6364AIRZ-T explicitly supports coupled-inductor operation on VR0 (core/memory output) and is compatible with phase doublers such as the ISL6617 and ISL6611A. Its EAPP modulation and channel-current balancing circuitry are optimized for coupled configurations, ensuring even current distribution and reduced ripple. Coupled-inductor mode is programmable via SVID register and must be enabled before startup. This capability is confirmed in the ISL6364A datasheet (FN7922) and applies directly to the ISL6364AIRZ-T variant.
What is the function of the IMON and IMONS pins on the ISL6364AIRZ-T?
The IMON and IMONS pins on the ISL6364AIRZ-T provide analog current monitor outputs for VR0 and VR1, respectively. They deliver scaled representations of sensed output current to the CPU's IMON input, enabling the processor to read the IOUT register via SVID and assert PSI# signals for phase shedding. These pins support accurate average overcurrent protection and are integral to VR12/IMVP7 compliance. Their behavior and scaling factor (e.g., 100µA/A) are defined in the ISL6364A datasheet and apply unchanged to the ISL6364AIRZ-T.
ISL6364AIRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 48-QFN (6x6)
ISL6364AIRZ-T FAQ
1.How can I place an order for ISL6364AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6364AIRZ-T 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 ISL6364AIRZ-T reliable?
The price and inventory of ISL6364AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6364AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6364AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6364AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6364AIRZ-T?
ISL6364AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6364AIRZ-T 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 ISL6364AIRZ-T?
For technical support, including ISL6364AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6364AIRZ-T requirements.
6.How does Aetrix verify that ISL6364AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6364AIRZ-T 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 ISL6364AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6364AIRZ-T?
All ISL6364AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6364AIRZ-T, 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 ISL6364AIRZ-T part is unused and in its original packaging.
Return procedure for ISL6364AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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