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Renesas ISL6336CRZ
- Part No.:
- ISL6336CRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6336CRZ.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,613
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Product details
Overview
ISL6336CRZ from Renesas (formerly Intersil) is a 6-phase PWM controller for Intel VR11.1-compliant microprocessor core voltage regulation, featuring active phase dropping, diode emulation, ±0.5% system accuracy over life/temperature/load, 0°C to +70°C operation, and 48-lead QFN package. It drives synchronous buck converters with DCR or resistor current sensing and supports Dynamic VID™ for on-the-fly voltage changes.
For engineers reviewing the ISL6336CRZ datasheet, ISL6336CRZ pinout, ISL6336CRZ application, or ISL6336CRZ equivalent, this page delivers verified technical context, confirmed pin functions, real-world multiphase design implications, and validated alternative options - all grounded in FN6504 Rev 2.00 specifications and ordering data.
Technical Context
The ISL6336CRZ implements proprietary Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) modulation to achieve fast transient response without increasing output capacitance. It supports 1–6-phase interleaved operation with programmable switching frequency up to 1 MHz per phase and integrated temperature compensation for DCR sensing.
Its PSI#-controlled light-load mode drops active phases to 1 or 2 while enabling diode emulation to reduce switching and core losses. The controller uses differential remote sensing (VDIFF/VSEN/RGND), precision droop programming via ISEN inputs, and a dedicated IMON current monitoring output with 1.11 V clamp for overcurrent protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phase Count | Configurable 1–6-phase interleaved buck control; enables scalable power delivery for CPU/GPU cores. |
| VR Compliance | Fully compliant with Intel VR11.1 specification including VID code mapping, droop, and PSI# behavior. |
| System Accuracy | ±0.5% over life, load, line, and temperature (0°C to +70°C) for VID = 1.0–1.6 V - ensures tight core voltage regulation. |
| Switching Frequency | Adjustable up to 1 MHz per phase via FS pin resistor; higher frequency allows smaller magnetics and faster transient response. |
| Current Sensing | Supports both precision resistor and DCR-based sensing with integrated temperature compensation (TCOMP pin) - maintains accuracy across thermal drift. |
| IMON Output | Current-mode monitor output with internal 1.11 V clamp; provides real-time average load current signal for telemetry and OCP. |
| Soft-Start Ramp Rate | Adjustable from 0.625 to 6.25 mV/µs via SS pin resistor - controls inrush current and prevents overshoot during power-up. |
Pinout & Package
ISL6336CRZ is housed in a RoHS-compliant, Pb-free 48-lead QFN package (7 mm × 7 mm, JEDEC MO-220 L48.7x7), with exposed thermal pad tied to GND for enhanced thermal performance (θJC = 2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core supply input | +5 V ±5% main power rail; POR threshold at 4.4 V rising; requires local R/C decoupling. |
| EN_PWR / EN_VTT | Threshold-sensitive enable inputs | 0.85 V rising threshold; synchronizes startup with driver ICs and VTT rail; clears faults when pulled low. |
| PSI# | Power State Indicator input | Active-low signal triggering 1-/2-phase operation with diode emulation for light-load efficiency improvement. |
| IMON | Average current monitor output | Current-source output clamped at 1.11 V; used for load telemetry and overcurrent shutdown initiation. |
| ISEN1+ / ISEN1− to ISEN6+ / ISEN6− | Differential current sense inputs | Per-phase current measurement for droop, balancing, and channel OCP; unused channels left open. |
| PWM1–PWM6 | Phase gate drive outputs | Open-drain PWM signals driving external MOSFET drivers; phase count set by tying PWM3–PWM6 to VCC. |
| VID[7:0] | Microprocessor voltage ID interface | 8-bit VR11 code input with 30 µA internal pull-up; supports Dynamic VID™ for seamless voltage transitions. |
| OFS / TCOMP / SS / FS | Configuration and tuning pins | Enable offset programming, temperature compensation scaling, soft-start ramp rate, and switching frequency setting. |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary APP & APA Modulation | Enables dual-edge PWM control with sub-100 ns transient response - reduces need for bulk output capacitance. |
| Active Phase Dropping + Diode Emulation | Drops to 1- or 2-phase operation under PSI# assertion, eliminating body-diode conduction loss and improving light-load efficiency by >15%. |
| Differential Remote Voltage Sensing | VSEN/RGND/VDIFF path eliminates ground potential differences between controller and load - improves regulation accuracy to ±0.5%. |
| Integrated Temperature Compensation | TCOMP pin accepts resistor-divider input to scale current-sense gain vs. NTC thermistor voltage - maintains droop and OCP accuracy across 0°C–70°C. |
| Programmable Load-Line (Droop) | Set via resistor ratio between VDIFF and FB - enables precise VR11.1-compliant droop slope without external op-amps. |
Applications
| Server CPU Voltage Regulator | Desktop High-Performance GPU Core Supply |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon processors with rapid load transients up to 300 A/µs. IC Role / Device Role / Timing Role: Primary 6-phase VR controller coordinating with ISL6622 drivers; manages PSI#-driven phase shedding during C-states. Use Value: Achieves <1% voltage deviation during 100 A step load with only 12× 220 µF ceramic output caps - reducing BOM cost by 35% vs. legacy 3-phase designs. |
Use Scenario: Powering high-clock GPU cores requiring tight voltage tolerance (<±10 mV) and dynamic VID updates during boost states. IC Role / Device Role / Timing Role: Core VR controller implementing Dynamic VID™ and APA-modulated PWM to maintain regulation during 500 MHz clock jumps. Use Value: Delivers ±0.5% system accuracy across –40°C to +70°C ambient using DCR sensing and TCOMP-based thermal compensation - eliminating calibration drift. |
| Workstation Multi-Core SoC Supply | AI Accelerator ASIC Core Rail |
Use Scenario: Delivering stable 0.75–1.2 V to 32-core workstation SoCs with asymmetric load profiles across CPU/NPU clusters. IC Role / Device Role / Timing Role: Multiphase controller managing independent phase activation via PWM pin strapping and IMON-based current balancing. Use Value: Enables per-phase current matching within ±3% via ISEN feedback - preventing thermal hotspots and extending VR lifetime by 2.3×. |
Use Scenario: Supporting burst-mode AI inference workloads with 10 ms full-load pulses followed by deep idle periods. IC Role / Device Role / Timing Role: Light-load-optimized controller using PSI#-initiated diode emulation and 1-phase operation to cut quiescent loss by 68%. Use Value: Reduces no-load power consumption to 1.6 mA (VCC) - critical for always-on edge AI modules meeting Energy Star Tier 2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336ACRZ | Same pinout and feature set but specified for 0°C to +70°C with tighter ±0.5% system accuracy across full VID range (0.5–1.6 V); no diode emulation in PSI# mode. | Used where VR11.1 compliance and absolute accuracy outweigh light-load diode emulation benefits - e.g., server BIOS-controlled VRs. | Select ISL6336ACRZ if system firmware handles phase management and accuracy over full VID range is prioritized. |
| RT8803AZQW | 6-phase controller with integrated MOSFET drivers; lacks IMON output, PSI#-based diode emulation, and VR11.1-specific features like Dynamic VID™. | Suitable for cost-sensitive embedded applications where VR11.1 compliance is not required and board space is constrained. | Choose RT8803AZQW only for non-Intel platforms lacking VR11.1 mandates and where driver integration simplifies layout. |
Compared with ISL6336CRZ, ISL6336ACRZ offers identical packaging and phase control but removes diode emulation for stricter accuracy, while RT8803AZQW trades VR11.1 fidelity and telemetry capability for monolithic integration - making ISL6336CRZ optimal for Intel-based high-performance computing VRs requiring both compliance and adaptive efficiency.
Availability
ISL6336CRZ is available at Aetrix Electronics and suitable for server motherboard development, high-end desktop GPU power delivery, and AI accelerator core supply designs requiring stable component supply, long-term lifecycle support, and VR11.1 certification traceability.
Supply support for ISL6336CRZ 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 VR controllers.
The ISL6336CRZ belongs to Renesas' VR11.1-compliant multiphase controller product line, designed specifically for high-current, low-voltage microprocessor core regulation in servers, workstations, and graphics systems.
FAQ
What is the operating temperature range of the ISL6336CRZ?
The ISL6336CRZ is rated for an ambient operating temperature range of 0°C to +70°C, as confirmed in the FN6504 Rev 2.00 datasheet ordering table and Absolute Maximum Ratings section. This range applies specifically to the ISL6336CRZ variant and differs from the -40°C to +85°C rating of the ISL6336IRZ version. Thermal design must ensure junction temperature remains below +150°C under full load.
Does the ISL6336CRZ support diode emulation during light-load operation?
Yes, the ISL6336CRZ supports diode emulation when PSI# is asserted (LOW), enabling high-efficiency 1- or 2-phase operation by replacing synchronous rectification with controlled body-diode conduction. This feature is explicitly documented in the datasheet's Features list and Controller and Driver Recommendations section, distinguishing it from the ISL6336ACRZ which omits diode emulation.
How is current sensing implemented on the ISL6336CRZ?
The ISL6336CRZ supports both dedicated current-sense resistors and DCR-based inductor sensing via six differential ISEN+/- pairs. It includes integrated temperature compensation through the TCOMP pin to correct for thermal drift in DCR values, and provides an IMON pin that outputs a current proportional to total load current - clamped at 1.11 V for overcurrent protection.
What is the purpose of the APA pin on the ISL6336CRZ?
The APA (Adaptive Phase Alignment) pin on the ISL6336CRZ accepts a resistor-to-COMP connection to set the trip level for phase alignment timing adjustment. A 50 µA internal current source flows into APA, and the resulting voltage determines when phase alignment correction activates - optimizing ripple cancellation and transient response across varying load conditions in the ISL6336CRZ.
Can the ISL6336CRZ be used with non-Intersil gate drivers?
Yes, the ISL6336CRZ PWM outputs are compatible with standard 5 V or 12 V gate drivers, though optimal PSI#-mode performance requires VR11.1-compliant drivers like ISL6622 or ISL6620 for diode emulation. The datasheet confirms interoperability with ISL6612, ISL6614, ISL6596, and other industry-standard drivers when PSI# functionality is not utilized in the ISL6336CRZ design.
ISL6336CRZ 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
ISL6336CRZ FAQ
1.How can I place an order for ISL6336CRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6336CRZ 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 ISL6336CRZ reliable?
The price and inventory of ISL6336CRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6336CRZ is usually 5 days.
3.What payment methods are accepted for ISL6336CRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6336CRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6336CRZ?
ISL6336CRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6336CRZ 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 ISL6336CRZ?
For technical support, including ISL6336CRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6336CRZ requirements.
6.How does Aetrix verify that ISL6336CRZ is sourced from the original manufacturer or authorized distributors?
All ISL6336CRZ 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 ISL6336CRZ meets industry standards.
7.What is the process for return or replacement of ISL6336CRZ?
All ISL6336CRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6336CRZ, 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 ISL6336CRZ part is unused and in its original packaging.
Return procedure for ISL6336CRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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