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Renesas ISL6336IRZ
- Part No.:
- ISL6336IRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6336IRZ.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,147
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Product details
Overview
ISL6336IRZ from Renesas (formerly Intersil) is a 6-phase PWM controller for microprocessor core voltage regulation, supporting -40°C to +85°C operation in a 48-lead QFN package. It delivers ±0.6% system accuracy over temperature, implements Intel VR11.1 compliance, and features Active Pulse Positioning (APP), Adaptive Phase Alignment (APA), and PSI#-triggered phase dropping with diode emulation for light-load efficiency in server and high-end desktop CPU power delivery.
For engineers reviewing the ISL6336IRZ datasheet, ISL6336IRZ pinout, ISL6336IRZ application, or ISL6336IRZ equivalent, this page provides verified technical context on multiphase buck control, DCR/resistor current sensing, IMON-based monitoring, dynamic VID™ support, and thermal-compensated overcurrent protection - all critical for VR11.1-compliant CPU VRM design.
Technical Context
The ISL6336IRZ integrates six independent PWM generators with interleaved timing, proprietary APP/APA modulation for sub-100ns transient response, and real-time channel-current balancing using differential ISEN+/- inputs per phase. It supports 1–6-phase operation via PWMx pin strapping and couples with VR11.1 drivers (e.g., ISL6622) for diode emulation during PSI#-asserted light-load modes.
It implements precision droop regulation via programmable load-line scaling, uses a unity-gain remote-sense amplifier (VDIFF/VSEN/RGND) for ±0.5% regulation accuracy, and embeds integrated temperature compensation (TCOMP) to correct DCR drift across -40°C to +85°C. The IMON pin outputs a clamped current proportional to total output current, with OCP trip at 1.11V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | -40°C to +85°C - qualified for industrial/server CPU VRM environments requiring extended thermal stability. |
| System Accuracy | ±0.6% VID (1V–1.6V range) - ensures tight core voltage regulation across full life, load, line, and temperature. |
| Switching Frequency | Adjustable up to 1 MHz per phase - enables optimization of size vs. efficiency in high-density VRMs. |
| Current Sensing | DCR or discrete resistor sensing with integrated TCOMP - eliminates external thermistors and reduces BOM count. |
| Phase Control | 1–6-phase operation via PWMx pin strapping; PSI#-driven phase dropping to 1/2-phase with diode emulation - cuts switching/core losses at light load. |
| VID Interface | 8-bit VR11 code input with Dynamic VID™ - allows seamless on-the-fly voltage changes without power interruption. |
| Protection Features | Average OCP, per-phase peak current limit, IMON-clamp OCP (1.11V), OVP (170 mV above VID), UVLO, thermal monitoring - comprehensive fault coverage for mission-critical CPU rails. |
Pinout & Package
ISL6336IRZ is housed in a 48-lead, 7 mm × 7 mm, 0.5 mm pitch QFN package (JEDEC MO-220, pkg drawing L48.7x7) with exposed thermal pad tied to GND. Pinout conforms to the 48 LD QFN top-view layout documented in FN6504 Rev 2.00, Page 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core supply input | +5V ±5% main bias rail; POR triggers at 4.4V rising edge; requires local R/C decoupling. |
| EN_PWR / EN_VTT | Threshold-sensitive enable inputs | 0.85V rising threshold; synchronizes startup with driver ICs and VTT rail; clears faults when pulled below 0.75V. |
| PSI# | Power State Indicator input | Active-low signal initiating 1-/2-phase operation with diode emulation; internal 40 µA pull-up to ~1V. |
| IMON | Average current monitor output | Current-source output scaled to total load current; clamped at 1.11V for OCP shutdown; requires R+C to GND (τ ≥ 300 µs). |
| ISEN[1–6]+ / ISEN[1–6]- | Differential current sense inputs | Per-phase inputs for DCR or resistor sensing; inactive channels must leave pins open; supports channel balancing and per-phase OCP. |
| PWM[1–6] | Phase gate-drive outputs | Open-drain PWM signals driving external drivers; phase count set by strapping PWM3–PWM6 to VCC/GND. |
| VID[0–7] | VR11 voltage identification inputs | 8-bit digital interface for core voltage setting; supports Dynamic VID™; internal 30–50 µA pull-up after tD3. |
| TCOMP | Temperature compensation scaling input | Accepts resistor-divider voltage from NTC network; adjusts droop slope and OCP threshold vs. temperature to compensate DCR drift. |
Key Features
| Feature | Design Value |
|---|---|
| Intel VR11.1 Compliance | Fully satisfies VR11.1 specification requirements for CPU core VRMs, including VID coding, droop, and PSI# behavior. |
| Active Pulse Positioning (APP) | Dual-edge PWM modulation enabling <100 ns load-step response without increasing output capacitance. |
| Adaptive Phase Alignment (APA) | Dynamic phase skew adjustment per channel to minimize ripple and improve current sharing under transient conditions. |
| Programmable Load-Line Droop | Configurable via resistor ratio between VDIFF and FB; enables precise V–I curve matching for CPU thermal management. |
| Differential Remote Sensing (VDIFF/VSEN/RGND) | Eliminates ground offset errors between controller and CPU socket; improves regulation accuracy and OVP/UVLO thresholds. |
| Integrated Temperature Compensation | TCOMP-driven correction of current sense gain and OCP threshold across -40°C to +85°C - removes need for external calibration. |
Applications
| Server CPU VRM | High-End Desktop Platform |
|---|---|
|
Use Scenario: Regulating core voltage for dual-socket Xeon Scalable processors with rapid 50 A/µs load transients. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller coordinating phase interleaving, droop programming, and PSI#-based light-load mode transitions. Use Value: Achieves ±0.6% regulation accuracy and sub-100 ns transient response while reducing output capacitor count by 40% versus single-phase designs. |
Use Scenario: Powering enthusiast-grade Core i9 CPUs in gaming motherboards with dynamic frequency scaling and AVX-heavy workloads. IC Role / Device Role / Timing Role: Multiphase controller managing 5-phase operation (via PWM6 strap), DCR sensing, and thermal-aware OCP using TM/TCOMP. Use Value: Enables aggressive droop tuning and phase dropping to maintain >90% efficiency at 5–15 A loads while meeting VR11.1 compatibility. |
| Data Center GPU Power | Workstation CPU Module |
|
Use Scenario: Delivering stable 0.8–1.2 V @ 60+ A to AI accelerator GPUs with coupled-inductor topology and strict thermal limits. IC Role / Device Role / Timing Role: Controller implementing coupled-inductor compatible phase alignment (APA), IMON-based current telemetry, and VR_HOT-triggered thermal throttling. Use Value: Reduces RMS input ripple current by 50% vs. single-phase, lowering input capacitor stress and improving system-level power integrity. |
Use Scenario: Supporting Xeon W-series CPUs in compact workstation modules where board space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Compact 48-pin QFN controller enabling 4-phase operation (PWM5 strapped), remote sensing, and programmable soft-start ramp rate. Use Value: Minimizes footprint while delivering ±0.6% accuracy and integrated TCOMP - eliminating external compensation components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336AIRZ | Same pinout and function, but includes enhanced PSI# logic: generates only high/low PWM states (no 3-level pattern) during PSI# mode, enabling use with broader driver families (e.g., ISL6612, ISL6614). | Preferred for new designs requiring flexibility in driver selection and simplified PSI# timing analysis; not drop-in for legacy ISL6336IRZ systems relying on 3-level PWM during PSI#. | Select ISL6336AIRZ if driver compatibility beyond ISL6622/ISL6620 is required; verify PSI# waveform expectations in existing firmware. |
| RT8803AZSP | 6-phase VR12.5 controller with integrated MOSFET drivers; lacks dedicated IMON pin and TCOMP; uses different VID encoding and no APA/APP modulation. | Suitable for cost-sensitive VR12.5 platforms where integration outweighs precision droop control; not compatible with VR11.1 BIOS or legacy DCR compensation schemes. | Choose RT8803AZSP only for greenfield VR12.5 designs; not a functional substitute for ISL6336IRZ in VR11.1-compliant systems. |
Compared with ISL6336IRZ, ISL6336AIRZ offers broader driver interoperability in PSI# mode but shares identical accuracy, thermal range, and pinout; RT8803AZSP provides higher integration at the expense of VR11.1 compliance, droop precision, and temperature-compensated current sensing.
Availability
ISL6336IRZ is available at Aetrix Electronics and suitable for server CPU VRMs, high-end desktop platforms, data center GPU power supplies, and workstation CPU modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL6336IRZ 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 full support for its high-performance analog and power management portfolio, including VRM controllers.
The ISL6336IRZ belongs to Intersil's VR11.1-compliant multiphase controller product line, designed specifically for precision, high-efficiency CPU core voltage regulation in enterprise and enthusiast computing platforms.
FAQ
What is the operating temperature range of the ISL6336IRZ?
The ISL6336IRZ is rated for -40°C to +85°C ambient operation, validated per the Absolute Maximum Ratings table in FN6504 Rev 2.00. This industrial temperature grade makes it suitable for server VRMs and high-performance desktop platforms where thermal margins are constrained. The device maintains ±0.6% system accuracy across this full range when used with integrated temperature compensation (TCOMP).
Does the ISL6336IRZ support DCR current sensing?
Yes, the ISL6336IRZ fully supports DCR current sensing via its six differential ISEN+/- inputs. Each pair connects to opposite ends of the output inductor's DCR network, with optional RC filtering as specified in the "Current Sensing" section of FN6504. Integrated TCOMP compensates for DCR temperature drift, eliminating need for external thermistors or calibration.
How does the PSI# pin affect phase operation in the ISL6336IRZ?
When PSI# is asserted low, the ISL6336IRZ drops active phases to 1 or 2 and enables diode emulation on remaining channels to reduce switching and core losses. This behavior is distinct from the ISL6336AIRZ, which outputs only high/low PWM states in PSI# mode. The ISL6336IRZ requires VR11.1-compliant drivers like ISL6622 for proper diode emulation timing.
What is the purpose of the IMON pin on the ISL6336IRZ?
The IMON pin on the ISL6336IRZ provides a current-source output proportional to the sum of all phase currents. When routed through a resistor to GND, it generates a voltage used for system-level current monitoring. Its internal 1.11V clamp triggers an overcurrent shutdown, providing fast, accurate protection independent of individual phase sensing.
Can the ISL6336IRZ be used in a 4-phase configuration?
Yes, the ISL6336IRZ supports 4-phase operation by strapping PWM5 to VCC while leaving PWM6 floating or grounded. The controller automatically configures four active PWM outputs (PWM1–PWM4) and disables current sensing and modulation on the unused phases. All protection, droop, and sensing functions remain fully operational in 4-phase mode.
ISL6336IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR11.1
- Voltage - Input:
- 3V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 1.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
ISL6336IRZ FAQ
1.How can I place an order for ISL6336IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6336IRZ 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 ISL6336IRZ reliable?
The price and inventory of ISL6336IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6336IRZ is usually 5 days.
3.What payment methods are accepted for ISL6336IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6336IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6336IRZ?
ISL6336IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6336IRZ 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 ISL6336IRZ?
For technical support, including ISL6336IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6336IRZ requirements.
6.How does Aetrix verify that ISL6336IRZ is sourced from the original manufacturer or authorized distributors?
All ISL6336IRZ 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 ISL6336IRZ meets industry standards.
7.What is the process for return or replacement of ISL6336IRZ?
All ISL6336IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6336IRZ, 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 ISL6336IRZ part is unused and in its original packaging.
Return procedure for ISL6336IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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