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Renesas ISL6336ACRZ
- Part No.:
- ISL6336ACRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6336ACRZ.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,099
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Product details
Overview
ISL6336ACRZ 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, ±0.5% system accuracy over temperature, and active phase dropping via PSI# input for light-load efficiency. It delivers precision droop control using DCR or resistor current sensing and integrates remote differential voltage sensing for tight regulation in high-performance computing power supplies.
For engineers reviewing the ISL6336ACRZ datasheet, ISL6336ACRZ pinout, ISL6336ACRZ application, or ISL6336ACRZ equivalent, key selection considerations include its 0°C to +70°C operating range, 48-lead QFN package, VR11.1 VID interface with Dynamic VID™, IMON current monitoring output, and proprietary APP/APA modulation for fast transient response in CPU/GPU VRMs.
Technical Context
The ISL6336ACRZ implements a multiphase buck architecture with interleaved timing to multiply ripple frequency and reduce input/output ripple currents. Its Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) modulation schemes enable dual-edge PWM control for superior transient response without increasing output capacitance.
It supports dynamic phase dropping (1–2 active phases) under PSI# assertion with diode emulation capability, uses programmable temperature compensation (TCOMP) for DCR sense drift correction, and provides bi-directional offset adjustment via OFS pin to fine-tune load-line droop independently of VID setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | 0°C to +70°C - Specifies industrial-grade thermal envelope for stable operation in server/desktop VRM environments. |
| System Accuracy | ±0.5% %VID (1V–1.6V) - Ensures tight core voltage regulation across life, load, line, and temperature for modern CPUs. |
| Switching Frequency | 0.08–1.0 MHz - Adjustable per-phase frequency enables optimization of efficiency vs. size in multi-phase designs. |
| VID Interface | 8-bit VR11 code with Dynamic VID™ - Allows seamless on-the-fly voltage changes during processor P-state transitions. |
| Current Sensing | Resistor or DCR-based with integrated TCOMP - Enables accurate channel balancing, droop programming, and OCP without external amplifiers. |
| IMON Output | Analog current monitor pin with 1.11 V clamp - Provides real-time average load current feedback for telemetry and protection logic. |
| Package | 48-lead 7×7 mm QFN (JEDEC MO-220) - Exposed pad enhances thermal performance; RoHS-compliant matte tin finish. |
Pinout & Package
ISL6336ACRZ is housed in a 48-lead QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad connected to GND. Pinout conforms to the ISL6336/ISL6336A 48 LD QFN top-view layout documented in FN6504 Rev 2.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core supply input | +5V ±5% bias rail; POR threshold at 4.4 V rising ensures clean startup sequencing. |
| EN_PWR / EN_VTT | Threshold-sensitive enables | 0.85 V rising threshold synchronizes controller activation with driver and VTT rails for coordinated power-up. |
| PSI# | Light-load mode control | Active-low signal triggers 1–2 phase operation with diode emulation to minimize switching/core losses below ~20% load. |
| IMON | Average current monitor | Current-source output scaled to total load; clamped at 1.11 V for OCP initiation when regulator exceeds safe current limit. |
| ISEN1+/- to ISEN6+/- | Per-phase current sense inputs | Differential inputs for DCR/resistor sensing; unused channels left open (e.g., ISEN6+/- for 5-phase config). |
| PWM1–PWM6 | Phase gate drive outputs | CMOS-compatible PWM signals; phase count configured by tying PWM3–PWM6 to VCC (e.g., PWM6=VCC → 5-phase). |
Key Features
| Feature | Design Value |
|---|---|
| Intel VR11.1 Compliance | Meets full specification including VID coding, PSI#, VR_RDY, and OVP behavior - enables drop-in use in certified motherboard VRMs. |
| Active Pulse Positioning (APP) | Dual-edge PWM modulation reduces output voltage deviation during load transients by up to 40% vs. conventional schemes. |
| Programmable Temperature Compensation | TCOMP pin accepts resistor divider to scale thermal correction of current sense gain - maintains ±1% current accuracy over 0°C–70°C. |
| Differential Remote Sensing | VSEN/RGND/VDIFF path rejects ground noise and trace IR drops - improves regulation accuracy by >0.2% in high-current PCB layouts. |
| Bi-directional Offset Adjustment | OFS pin allows independent voltage offset (±400 mV) added to DAC reference - enables precise load-line tuning without altering VID table. |
Applications
| Server CPU Voltage Regulator | Desktop GPU Power Delivery |
|---|---|
Use Scenario: High-current, fast-transient core supply for dual-socket Xeon platforms requiring <1% voltage deviation during 50 A/µs load steps. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller managing phase alignment, droop, and current balancing across six parallel buck stages. Use Value: APP/APA modulation and 1.0 MHz max switching frequency reduce output capacitance by 35% versus legacy controllers while maintaining VR11.1 compliance. | Use Scenario: Compact, thermally constrained VRM on high-end gaming GPU PCBs where space limits capacitor count and thermal margin is critical. IC Role / Device Role / Timing Role: Core voltage controller implementing 4-phase operation with coupled inductors and PSI#-driven 2-phase light-load mode. Use Value: Diode emulation during PSI# assertion cuts light-load switching losses by 60%, extending battery-equivalent runtime in hybrid graphics modes. |
| Workstation CPU Power System | AI Accelerator Board Supply |
Use Scenario: Precision-regulated 1.0–1.3 V supply for multi-core AMD Threadripper or Intel Core i9 processors with aggressive P-state transitions. IC Role / Device Role / Timing Role: Multiphase controller providing Dynamic VID™ updates, remote sensing, and IMON telemetry for firmware-based power management. Use Value: ±0.5% system accuracy and integrated TCOMP ensure stable voltage under varying junction temperatures, reducing thermal throttling events. | Use Scenario: High-density 5–6 phase VRM powering PCIe-based AI inference accelerators with bursty 100+ A load profiles and strict thermal limits. IC Role / Device Role / Timing Role: Master controller coordinating phase shedding, current limiting, and thermal monitoring (VR_HOT/VR_FAN) across distributed power stages. Use Value: Integrated VR_HOT/VR_FAN outputs directly drive cooling fans and throttle logic, eliminating need for external thermal ICs and saving BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336CRZ | Same architecture and pinout; identical electrical specs but lacks ISL6336A's simplified PSI# waveform (3-level → 2-level PWM in PSI# mode). | Requires VR11.1-compliant drivers (e.g., ISL6622) for PSI# operation; not compatible with generic 5V/12V drivers like ISL6612. | Select ISL6336CRZ only if legacy VR11.1 driver compatibility is mandatory and design uses ISL6622/ISL6620. |
| RT8803AZQW | 6-phase controller with Intel VR12.0/VR12.5 support; higher integration (integrated MOSFET drivers), no IMON pin, different PSI# implementation. | Targets newer CPU generations; lacks DCR temperature compensation and programmable offset; requires different layout and driver selection. | Choose RT8803AZQW for VR12.x platforms needing integrated drivers; avoid for VR11.1 retrofits or designs requiring IMON telemetry. |
Compared with ISL6336CRZ, the ISL6336ACRZ offers broader driver compatibility in PSI# mode and simpler PWM waveform generation, while RT8803AZQW targets next-gen VR standards at the expense of backward compatibility and analog monitoring flexibility.
Availability
ISL6336ACRZ is available at Aetrix Electronics and suitable for server CPU voltage regulators, desktop GPU power delivery, workstation CPU power systems, and AI accelerator board supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6336ACRZ 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.
The ISL6336ACRZ belongs to Renesas' VR11.1-compliant multiphase controller product line, designed specifically for precision core voltage regulation in x86 server, desktop, and workstation platforms with demanding transient and efficiency requirements.
FAQ
What is the operating temperature range specified for the ISL6336ACRZ?
The ISL6336ACRZ is rated for an ambient operating temperature range of 0°C to +70°C, as confirmed in the FN6504 datasheet ordering information table and absolute maximum ratings section. This industrial-grade range supports deployment in standard server and desktop motherboard environments without extended thermal derating.
Does the ISL6336ACRZ support both resistor-based and DCR-based current sensing?
Yes, the ISL6336ACRZ supports both methods: dedicated current-sense resistors (via ISEN+/- differential inputs) and inductor DCR sensing. The datasheet explicitly states "Precision Resistor or DCR Current Sensing" as a feature and details RC network requirements for DCR applications on page 14.
How does the PSI# pin function on the ISL6336ACRZ, and what is its key advantage over the ISL6336CRZ?
On the ISL6336ACRZ, PSI# is an active-low input that triggers 1–2 phase operation with simplified 2-level PWM (excluding fault modes), enabling compatibility with generic Intersil drivers like ISL6612/ISL6614. In contrast, ISL6336CRZ generates a 3-level PWM in PSI# mode and requires VR11.1-specific drivers such as ISL6622.
What is the purpose of the IMON pin on the ISL6336ACRZ, and how is it used in system design?
The IMON pin on the ISL6336ACRZ provides an analog current-source output proportional to the average total load current. A resistor-to-ground converts it to a voltage (clamped at 1.11 V); this signal enables real-time telemetry, closed-loop fan control, and overcurrent shutdown - all without external amplification or ADC resources.
Can the ISL6336ACRZ be used in 4-phase or 5-phase configurations, and how is phase count selected?
Yes, the ISL6336ACRZ supports 1–6 phase operation. Phase count is set by hardwiring PWM3–PWM6 pins: tie PWM3 to VCC for 2-phase, PWM4 for 3-phase, PWM5 for 4-phase, and PWM6 for 5-phase. The datasheet confirms this configuration method in the "Functional Pin Description" section on page 10.
ISL6336ACRZ 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)
ISL6336ACRZ FAQ
1.How can I place an order for ISL6336ACRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6336ACRZ 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 ISL6336ACRZ reliable?
The price and inventory of ISL6336ACRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6336ACRZ is usually 5 days.
3.What payment methods are accepted for ISL6336ACRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6336ACRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6336ACRZ?
ISL6336ACRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6336ACRZ 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 ISL6336ACRZ?
For technical support, including ISL6336ACRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6336ACRZ requirements.
6.How does Aetrix verify that ISL6336ACRZ is sourced from the original manufacturer or authorized distributors?
All ISL6336ACRZ 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 ISL6336ACRZ meets industry standards.
7.What is the process for return or replacement of ISL6336ACRZ?
All ISL6336ACRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6336ACRZ, 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 ISL6336ACRZ part is unused and in its original packaging.
Return procedure for ISL6336ACRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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