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Renesas ISL6364IRZ
- Part No.:
- ISL6364IRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6364IRZ.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,853
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Product details
Overview
ISL6364IRZ from Renesas (formerly Intersil) is a dual-output VR12/IMVP7-compliant PWM controller for CPU voltage regulation, featuring 4-phase + 1-phase topology, ±0.5% closed-loop system accuracy over load/line/temperature, and EAPP modulation for fast transient response. It supports coupled-inductor operation, diode emulation in PSI2/3 modes, and precision DCR/resistor current sensing for droop control in high-performance computing platforms.
For engineers reviewing the ISL6364IRZ datasheet, ISL6364IRZ pinout, ISL6364IRZ application, or ISL6364IRZ equivalent, key selection considerations include VR12/IMVP7 SVID compliance, programmable phase-dropping behavior (PSI1/2/3), differential remote sensing capability, EAPP modulation benefits for light-load efficiency, and thermal-compensated current monitoring via TM/TMS pins.
Technical Context
The ISL6364IRZ implements two independent PWM outputs: VR0 (1–4-phase, core/memory rail) and VR1 (single-phase, graphics/system agent/I/O rail), each with dedicated current sensing, thermal monitoring, and SVID interface. Its EAPP modulation enables variable-frequency transient response while maintaining linear pulse distribution and voltage feed-forward control.
It supports Intel's VR12/IMVP7 specification including SerialVID programming of IMAX/TMAX/BOOT registers, PSI#-driven phase dropping (1- or 2-phase in PSI1; single-phase with diode emulation in PSI2/3), and integrated thermal compensation for both current sense elements and NTC-based temperature digitization via TM/TMS pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual output: VR0 (4-phase) + VR1 (1-phase); supports coupled inductors and phase doubler compatibility |
| VR12/IMVP7 Compliance | Fully compliant; implements SVID bus, PSI# handshake, IMON current reporting, and dynamic VID compensation |
| Closed-loop Accuracy | ±0.5% over full load, line, and temperature range - ensures tight VOUT positioning for CPU core regulation |
| Current Sensing | Differential DCR or discrete resistor sensing with integrated thermal compensation - enables accurate droop programming and channel balancing |
| Phase Control | Programmable 1- or 2-phase operation in PSI1; single-phase with diode emulation in PSI2/3 - reduces magnetic & switching losses at light load |
| Modulation Scheme | Enhanced Active Pulse Positioning (EAPP) - delivers fast transient response with fewer bulk capacitors and reduced beat-frequency oscillation |
| Thermal Monitoring | Dual NTC inputs (TM/TMS) with internal digitization - provides per-regulator thermal compensation and protection |
Pinout & Package
ISL6364IRZ is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per the official ISL6364 datasheet (FN6861 Rev 2.00).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power supply input | Bias supply for internal circuitry; requires local decoupling near pin |
| FB | Feedback input | Connects to voltage divider network; senses regulated output for closed-loop control and droop generation |
| IMON | Current monitor output | Reports sensed load current to CPU via SVID bus; used for IMON-based OCP and telemetry |
| SVID_DATA / SVID_CLK | SVID bus interface | Two-wire serial interface for VID setting, register access, and PSI# coordination with processor |
| PSI# | Power state indicator input | Active-low signal from CPU indicating entry into low-power mode (PSI1/2/3); triggers phase dropping |
| TM / TMS | Thermal monitor inputs | Accept NTC thermistor voltage; enable per-regulator thermal digitization and current-sense compensation |
Key Features
| Feature | Design Value |
|---|---|
| EAPP Modulation | Enables sub-100ns load-step response with minimized output capacitor count and no beat-frequency artifacts |
| Dual Independent Regulators | VR0 (4-phase core/memory) and VR1 (1-phase graphics/I/O) operate with separate current sensing, thermal monitoring, and phase control |
| PSI-Driven Phase Management | Automatically drops phases in PSI1/2/3 modes and re-adds them on load step - improves light-load efficiency without sacrificing transient performance |
| Differential Remote Sensing | Eliminates ground potential differences between controller and load - ensures ±0.5% regulation accuracy under high-current PCB routing conditions |
| Integrated Thermal Compensation | Digitizes NTC voltage at TM/TMS and applies real-time correction to current sense gain - maintains droop accuracy across -40°C to +125°C |
Applications
| Server CPU Voltage Regulation | Laptop CPU Core Power Delivery |
|---|---|
Use Scenario: High-current, multi-phase VR for dual-socket Xeon or EPYC processors requiring strict VR12/IMVP7 compliance and dynamic phase scaling. IC Role / Device Role / Timing Role: Primary PWM controller managing 4-phase VR0 (core) and 1-phase VR1 (system agent), coordinating with CPU via SVID and PSI#. Use Value: Enables precise droop control, thermal-aware current balancing, and seamless transition between 4-/2-/1-phase operation - sustaining >90% efficiency from 5% to 100% load. | Use Scenario: Compact, thermally constrained mobile platform requiring efficient core and I/O rail regulation with minimal external components. IC Role / Device Role / Timing Role: Dual-output controller delivering tightly regulated core voltage (VR0) and graphics/system agent voltage (VR1) using shared thermal monitoring and current sensing. Use Value: Diode emulation in PSI2/3 reduces quiescent current by >40% vs fixed-phase operation; EAPP modulation cuts required bulk capacitance by 30%. |
| Workstation Memory Regulator | High-Performance GPU Power Controller |
Use Scenario: DDR4/DDR5 memory subsystem requiring stable, low-noise VDDQ with adaptive phase count based on memory bandwidth demand. IC Role / Device Role / Timing Role: Configured as 4-phase VR0 for memory rail; uses DCR sensing and remote sensing to maintain <±5mV regulation error across 0–60A load range. Use Value: Coupled-inductor support and channel-current balancing ensure uniform phase loading and thermal distribution - extending inductor lifetime under sustained burst loads. | Use Scenario: Discrete GPU board where VR1 supplies PCIe-switched I/O or GPU system agent, demanding fast transient response and SVID synchronization with host CPU. IC Role / Device Role / Timing Role: VR1 operates as standalone 1-phase regulator with dynamic VID compensation (DVS) and no droop - matching GPU I/O timing requirements. Use Value: DVS eliminates need for external compensation networks; SVID register access allows runtime adjustment of IMAX/TMAX thresholds during GPU boost states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output VR12/IMVP7 PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6367IRZ | Successor with enhanced SVID timing, improved PSI# latency, and extended temperature range (–40°C to +125°C vs. –40°C to +105°C) | Required for new designs targeting IMVP7.1+ or extended industrial thermal profiles | Select ISL6367IRZ when designing for latest-generation CPUs or environments exceeding 105°C junction temperature |
| RT8803AZSP | Single-chip dual-output VR12.5 controller with integrated MOSFET drivers; lacks EAPP modulation and TM/TMS thermal digitization | Used in cost-sensitive client platforms where integrated drivers reduce BOM count but phase control granularity is less critical | Choose RT8803AZSP only if driver integration outweighs need for EAPP transient performance and per-rail thermal compensation |
Compared with ISL6364IRZ, ISL6367IRZ offers tighter SVID timing and broader thermal operation but shares identical pinout and register map; RT8803AZSP trades off advanced modulation and thermal features for integration and lower component count - making it suitable only for non-server, non-thermal-critical applications.
Availability
ISL6364IRZ is available at Aetrix Electronics and suitable for server CPU voltage regulation, laptop core power delivery, and workstation memory regulator applications requiring stable component supply and long-term design continuity.
Supply support for ISL6364IRZ 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 maintains its high-performance analog and power management portfolio. Intersil was known for precision power ICs targeting computing, industrial, and communications infrastructure.
The ISL6364IRZ belongs to Intersil's VR12/IMVP7-compliant PWM controller product line, designed specifically for multi-phase CPU core, memory, and peripheral voltage regulation in high-end computing platforms with strict efficiency, accuracy, and transient-response requirements.
FAQ
What is the primary function of the ISL6364IRZ in a CPU power delivery system?
The ISL6364IRZ serves as a dual-output VR12/IMVP7-compliant PWM controller, managing 4-phase regulation for the CPU core or memory rail (VR0) and 1-phase regulation for graphics, system agent, or I/O rails (VR1). It implements SVID communication, PSI#-driven phase dropping, and EAPP modulation to meet Intel's stringent transient, efficiency, and accuracy requirements - all critical for modern high-performance processors.
Does the ISL6364IRZ support both DCR and discrete resistor current sensing?
Yes, the ISL6364IRZ supports both differential DCR sensing across the output inductor and precision discrete resistor sensing. It includes integrated programmable current sense resistors and thermal compensation circuitry tied to TM/TMS pins, enabling accurate droop programming, channel-current balancing, and average overcurrent protection - regardless of the chosen sensing method.
How does the ISL6364IRZ handle low-power states like PSI1, PSI2, and PSI3?
The ISL6364IRZ responds to the PSI# signal from the CPU by entering programmable low-power modes: 1- or 2-phase operation in PSI1, and single-phase operation with diode emulation in PSI2/3. This reduces magnetic core and switching losses significantly, improving light-load efficiency while retaining the ability to rapidly re-add dropped phases upon load step - ensuring robust transient response across all operating conditions.
Is the ISL6364IRZ pin-compatible with any newer Renesas controllers?
Yes, the ISL6364IRZ is pin-compatible with the ISL6367IRZ, its direct successor. Both share identical 48-pin QFN packaging, pin assignments, and register mapping. The ISL6367IRZ adds enhancements including improved SVID timing compliance, lower PSI# latency, and extended junction temperature rating (–40°C to +125°C), making it the recommended upgrade path for new designs.
What thermal monitoring capabilities does the ISL6364IRZ provide?
The ISL6364IRZ features dual independent thermal monitoring inputs (TM and TMS) that accept NTC thermistor voltages. These signals are internally digitized and used for real-time thermal compensation of current sense elements and for integrated thermal protection. Each input corresponds to one regulator output (VR0 and VR1), enabling per-rail thermal awareness and compensation - critical for maintaining droop accuracy and reliability in thermally asymmetric layouts.
ISL6364IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-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:
- 48-QFN (6x6)
ISL6364IRZ FAQ
1.How can I place an order for ISL6364IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6364IRZ 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 ISL6364IRZ reliable?
The price and inventory of ISL6364IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6364IRZ is usually 5 days.
3.What payment methods are accepted for ISL6364IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6364IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6364IRZ?
ISL6364IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6364IRZ 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 ISL6364IRZ?
For technical support, including ISL6364IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6364IRZ requirements.
6.How does Aetrix verify that ISL6364IRZ is sourced from the original manufacturer or authorized distributors?
All ISL6364IRZ 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 ISL6364IRZ meets industry standards.
7.What is the process for return or replacement of ISL6364IRZ?
All ISL6364IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6364IRZ, 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 ISL6364IRZ part is unused and in its original packaging.
Return procedure for ISL6364IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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