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Renesas ISL6336AIRZ
- Part No.:
- ISL6336AIRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6336AIRZ.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
ISL6336AIRZ from Renesas (formerly Intersil) is a 6-phase PWM controller for microprocessor core voltage regulation, supporting 1–6-phase interleaved synchronous-buck operation with Intel VR11.1 compliance, -40°C to +85°C operating range, and integrated current monitoring via IMON pin. It enables high-efficiency power delivery in server CPU VRMs and high-performance computing motherboards.
For engineers reviewing the ISL6336AIRZ datasheet, ISL6336AIRZ pinout, ISL6336AIRZ application, or ISL6336AIRZ equivalent, key selection considerations include its PSI#-enabled light-load phase dropping, DCR/resistor current sensing architecture, ±0.6% system accuracy over temperature, 0.08–1 MHz adjustable switching frequency, and 48-pin QFN package with differential remote sensing.
Technical Context
The ISL6336AIRZ implements proprietary Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) modulation to achieve fast transient response without external compensation. Its dual-edge PWM control dynamically adjusts pulse edges per phase to minimize output voltage deviation during load steps.
It supports both resistor-based and DCR-based current sensing with programmable temperature compensation via TCOMP, enabling precise droop programming, channel-current balancing, and average overcurrent protection. The PSI# input triggers phase reduction to 1- or 2-phase mode with diode emulation for light-load efficiency optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phase Count | Configurable 1–6-phase interleaved buck control; enables scalable VRM design from low-power to high-current CPUs. |
| Input Voltage Range | VCC = +5V ±5%; requires stable 5V bias supply with local RC decoupling at VCC pin. |
| Switching Frequency | Adjustable 0.08–1 MHz per phase via FS pin resistor; higher frequencies allow smaller magnetics but increase switching loss. |
| System Accuracy | ±0.6% VID over -40°C to +85°C (VID = 1–1.6V); ensures tight core voltage regulation across thermal and load conditions. |
| Current Sensing | Dual-mode: precision DCR or discrete resistor sensing with integrated temperature compensation; supports accurate load-line droop and OCP. |
| Light-Load Efficiency | PSI#-activated phase dropping to 1/2-phase + optional diode emulation; reduces core and switching losses without sacrificing transient capability. |
| Protection Features | Per-phase current limit, average overcurrent protection (OCP), overvoltage (OVP), undervoltage (UVLO), thermal monitoring (VR_HOT/VR_FAN), and open-sense line detection. |
Pinout & Package
ISL6336AIRZ is housed in a 48-lead QFN package (7 mm × 7 mm, 0.5 mm pitch) compliant with JEDEC MO-220, featuring an exposed thermal pad connected to GND for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Bias supply input | +5V ±5% main power rail; must be decoupled locally with R/C filter to suppress noise coupling into control loop. |
| EN_PWR / EN_VTT | Threshold-sensitive enable inputs | Enable sequencing with VR drivers and VTT regulator; rising threshold = 0.85 V, falling = 0.752 V; clears faults on low assertion. |
| PSI# | Power State Indicator input | Active-low signal triggering 1-/2-phase operation with diode emulation; internal 40 µA pull-up to ~1 V. |
| IMON | Average current monitor output | Current-source output proportional to total load current; clamped at 1.11 V for OCP initiation; requires R-C load (≥300 µs time constant). |
| ISEN[1–6]+/– | Differential current sense inputs | Per-phase current measurement for droop, balancing, and OCP; unused channels left floating (e.g., ISEN6± for 5-phase config). |
| PWM[1–6] | Phase gate drive outputs | Open-drain PWM signals driving external MOSFET drivers; phase count set by tying PWM3–PWM6 to VCC (e.g., PWM6 = VCC → 5-phase). |
| VDIFF / VSEN / RGND | Differential remote sense interface | VSEN/RGND measure remote output voltage; VDIFF is amplified single-ended output fed to FB for precision regulation and protection. |
Key Features
| Feature | Design Value |
|---|---|
| Intel VR11.1 Compliance | Fully meets VR11.1 specification for desktop/server CPU core voltage regulation including VID coding, droop, and timing requirements. |
| Active Pulse Positioning (APP) | Dual-edge PWM modulation dynamically repositions leading/trailing edges per phase to reduce output voltage deviation during fast load transients. |
| Adaptive Phase Alignment (APA) | Real-time alignment of phase currents via APA pin resistor; improves current sharing and reduces ripple-induced stress on output capacitors. |
| Programmable Temperature Compensation | TCOMP pin accepts resistor divider from TM to adjust current-sense gain vs. temperature; compensates DCR drift and maintains OCP accuracy. |
| Differential Remote Voltage Sensing | VSEN/RGND inputs reject ground noise between controller and load; enables ±0.5% system accuracy even with PCB trace impedance. |
Applications
| Server CPU Voltage Regulator Modules | High-End Desktop Motherboard VRMs |
|---|---|
|
Use Scenario: Regulating core voltage for multi-core Xeon or EPYC processors under dynamic workloads with rapid load steps up to 100 A/µs. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller managing phase interleaving, droop, current balancing, and PSI#-driven light-load efficiency. Use Value: Enables fewer output capacitors and lower ESR requirements due to 6× ripple frequency multiplication, reducing BOM cost and board area. |
Use Scenario: Delivering tightly regulated 1.0–1.4 V core power to high-clock-speed gaming CPUs with aggressive thermal constraints. IC Role / Device Role / Timing Role: Core voltage controller implementing Dynamic VID™ for real-time voltage scaling and APA for optimal phase current distribution. Use Value: Achieves ±0.6% system accuracy across -40°C to +85°C, ensuring stable operation during sustained turbo boost and thermal throttling cycles. |
| Data Center AI Accelerator Power | Workstation GPU Core Supply |
|
Use Scenario: Powering ASIC-based AI accelerators requiring high-current, low-noise core rails with strict transient response (<50 µs recovery). IC Role / Device Role / Timing Role: Multiphase controller using APP modulation to minimize voltage undershoot/overshoot during 50–100 A load steps. Use Value: Reduces required output capacitance by >40% versus single-phase designs while maintaining <±10 mV regulation window. |
Use Scenario: Supporting high-performance workstation GPUs with variable power states (e.g., PCIe Gen5 graphics cards with dynamic power limits). IC Role / Device Role / Timing Role: VRM controller leveraging PSI# input to drop to 2-phase operation during idle/low-utilization, cutting quiescent power by >35%. Use Value: Extends system energy efficiency without compromising transient readiness-dropped phases re-engage within 10 µs of PSI# deassertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336IRZ | Same architecture and pinout, but lacks APA functionality and uses older modulation scheme; no adaptive phase alignment tuning via APA pin. | Lower transient performance margin; suitable only where VR11.1 compliance is required but APA-level current balancing is not critical. | Select ISL6336IRZ only if legacy compatibility or cost sensitivity outweighs need for optimal phase current matching and ripple suppression. |
| RT8803AGQW | 6-phase controller with integrated MOSFET drivers; different pinout, no IMON current monitor output, and fixed 500 kHz switching frequency. | Targeted at space-constrained consumer boards; lacks DCR temperature compensation and VR11.1-specific features like PSI#-triggered diode emulation. | Choose RT8803AGQW for simplified layout and driver integration, but avoid when precise droop programming, thermal-compensated OCP, or Intel-spec compliance is mandatory. |
Compared with ISL6336IRZ and RT8803AGQW, the ISL6336AIRZ uniquely delivers APA-adjustable phase alignment, full VR11.1 compliance with PSI#-enabled diode emulation, and ±0.6% accuracy over industrial temperature range-making it the only option for thermally demanding, high-transient server and workstation VRMs.
Availability
ISL6336AIRZ is available at Aetrix Electronics and suitable for server CPU VRMs, high-end desktop motherboard power delivery, and AI accelerator power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6336AIRZ 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 technical and supply chain support for legacy Intersil power management ICs including the ISL6336AIRZ.
The ISL6336AIRZ belongs to Renesas' high-performance multiphase PWM controller product line, designed specifically for Intel VR11.x-compliant CPU core voltage regulation in servers, workstations, and high-end desktop platforms.
FAQ
What is the operating temperature range of the ISL6336AIRZ?
The ISL6336AIRZ is rated for operation from -40°C to +85°C ambient temperature, as confirmed in the FN6504 datasheet Absolute Maximum Ratings table. This industrial-grade range supports deployment in thermally demanding server chassis and high-performance computing environments where airflow and thermal management vary significantly across the board.
Does the ISL6336AIRZ support DCR current sensing with temperature compensation?
Yes, the ISL6336AIRZ supports both discrete resistor and DCR-based current sensing, with integrated programmable temperature compensation via the TCOMP pin. A resistor divider from TM to TCOMP scales the thermal compensation gain to match the DCR's temperature coefficient, maintaining accurate current measurement and OCP trip levels across the full -40°C to +85°C range.
How does the PSI# pin affect phase operation in the ISL6336AIRZ?
When PSI# is asserted low, the ISL6336AIRZ drops active phases to 1 or 2 depending on configuration and enables diode emulation on remaining phases to reduce switching and conduction losses. Upon PSI# deassertion, all dropped phases resume operation within microseconds to sustain heavy-load transients-enabling high efficiency at light load without sacrificing dynamic response.
What package type and footprint does the ISL6336AIRZ use?
The ISL6336AIRZ uses a 48-lead QFN package (7 mm × 7 mm, 0.5 mm pitch) compliant with JEDEC MO-220, featuring an exposed thermal pad tied to GND. Its pinout matches ISL6336IRZ and ISL6336A variants, enabling direct PCB layout reuse across temperature grades and minor functional revisions within the family.
Is the ISL6336AIRZ compatible with Intel VR11.1 specifications?
Yes, the ISL6336AIRZ is explicitly stated as Intel VR11.1 compliant in the FN6504 datasheet title and Features section. It supports VR11 code VID inputs, precise droop programming, PSI#-driven phase dropping, and all required timing, accuracy, and protection functions defined in the VR11.1 specification for microprocessor core voltage regulation.
ISL6336AIRZ 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)
ISL6336AIRZ FAQ
1.How can I place an order for ISL6336AIRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6336AIRZ 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 ISL6336AIRZ reliable?
The price and inventory of ISL6336AIRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6336AIRZ is usually 5 days.
3.What payment methods are accepted for ISL6336AIRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6336AIRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6336AIRZ?
ISL6336AIRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6336AIRZ 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 ISL6336AIRZ?
For technical support, including ISL6336AIRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6336AIRZ requirements.
6.How does Aetrix verify that ISL6336AIRZ is sourced from the original manufacturer or authorized distributors?
All ISL6336AIRZ 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 ISL6336AIRZ meets industry standards.
7.What is the process for return or replacement of ISL6336AIRZ?
All ISL6336AIRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6336AIRZ, 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 ISL6336AIRZ part is unused and in its original packaging.
Return procedure for ISL6336AIRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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