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Renesas ISL6336BCRZ-T
- Part No.:
- ISL6336BCRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6336BCRZ-T.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,602
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Product details
Overview
ISL6336BCRZ-T from 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 life/temperature/load, and active phase dropping via PSI# input. It delivers precision droop regulation using DCR or discrete resistor current sensing and integrates remote differential voltage sensing (VDIFF/VSEN/RGND) for high-accuracy feedback in server and desktop CPU power delivery.
For engineers reviewing the ISL6336BCRZ-T datasheet, ISL6336BCRZ-T pinout, ISL6336BCRZ-T application, or ISL6336BCRZ-T equivalent, key selection considerations include VR11.1 compliance, programmable switching frequency up to 1 MHz per phase, integrated temperature-compensated current monitoring (IMON), adaptive phase alignment (APA), and support for coupled inductors in 4-phase configurations.
Technical Context
The ISL6336BCRZ-T implements Intersil's proprietary Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) modulation to achieve fast transient response without increasing output capacitance. It supports dynamic VID™ changes and bi-directional reference-voltage offset programming independent of VID code.
It performs continuous current sensing via dedicated ISEN+/- inputs for each phase, enabling channel-current balancing, precision load-line (droop) programming, and average overcurrent protection with individual phase current limiting. Integrated thermal compensation (TCOMP/TM) adjusts droop and OCP thresholds based on NTC-sensed VR temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phases | Configurable 1–6-phase interleaved buck control; enables scalable power delivery from light-load efficiency to high-current transient handling. |
| VR Compliance | Fully compliant with Intel VR11.1 specification, including dynamic VID coding, PSI#-driven phase dropping, and VR_HOT/VR_RDY signaling. |
| System Accuracy | ±0.5% over life, load, line, and temperature (0°C to +70°C) for VID = 1.0–1.6V - ensures tight core voltage regulation under real-world thermal and aging conditions. |
| Switching Frequency | Adjustable up to 1 MHz per phase via FS pin resistor; higher frequency allows smaller magnetics and reduced output ripple amplitude. |
| Current Sensing | Supports both DCR-based and discrete resistor-based sensing per phase; enables accurate droop, channel balancing, and IMON current monitor output. |
| Thermal Compensation | Programmable via TCOMP pin and TM/NTC network; dynamically scales current-sense gain and OCP threshold to compensate for DCR drift with temperature. |
| Package | 48-lead QFN (7×7 mm, JEDEC MO-220 L48.7x7); exposed thermal pad tied to GND for enhanced thermal dissipation in high-power CPU VRMs. |
Pinout & Package
ISL6336BCRZ-T is housed in a 48-lead, 7×7 mm QFN package (JEDEC MO-220 L48.7x7) with an exposed thermal pad connected to GND. The package supports high-density PCB layouts and efficient heat transfer in multi-phase VRM designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core supply input | +5 V ±5% main bias rail; POR activation at 4.3–4.5 V rising edge; requires local R/C decoupling for noise immunity. |
| EN_PWR / EN_VTT | Threshold-sensitive enable inputs | Both activate controller when driven above 0.850 V; falling below 0.752 V clears faults and primes soft-start - enables coordinated sequencing with driver ICs and VTT rail. |
| VID[7:0] | Digital voltage identification interface | 8-bit VR11-compliant input; supports Dynamic VID™ for on-the-fly core voltage changes; internal 30–50 µA pull-up after tD3. |
| PSI# | Power state indicator input | Asserted low initiates proprietary phase dropping (to 1–2 phases) with diode emulation; improves light-load efficiency by reducing switching/core losses. |
| IMON | Average current monitor output | Current-source output proportional to total regulator current; clamped at 1.12 V - provides real-time load monitoring and OCP trigger point. |
| ISEN[6:1]+/- | Per-phase current sense inputs | Differential inputs for DCR or resistor-based sensing; used for droop, channel balancing, and per-phase current limit (115–146 µA trip). |
| VDIFF / VSEN / RGND | Remote voltage sensing interface | High-bandwidth (20 MHz) differential amplifier; eliminates ground potential error between controller and CPU socket - critical for sub-1% regulation accuracy. |
| APA | Adaptive Phase Alignment control | 50 µA sink current input; external R-C sets trip level for simultaneous multi-phase turn-on during large load transients. |
Key Features
| Feature | Design Value |
|---|---|
| Active Pulse Positioning (APP) | Dual-edge PWM modulation with fixed frequency - independently adjusts leading/trailing edges to minimize voltage deviation during fast load steps. |
| Adaptive Phase Alignment (APA) | Enables synchronized firing of all active phases during large current transients - reduces peak output voltage deviation by >30% vs. standard interleaving. |
| Proprietary phase dropping with diode emulation | Reduces active phases to 1 or 2 under PSI# assertion while emulating synchronous rectifier loss characteristics - achieves >90% efficiency at <5 A load. |
| Integrated temperature-compensated current sensing | TCOMP/TM network dynamically scales current-sense gain and OCP threshold - maintains ±3% current measurement accuracy across -40°C to +85°C ambient. |
| Differential remote sensing (VDIFF/VSEN/RGND) | Eliminates IR drop error between VRM and CPU socket - enables ±0.5% system regulation accuracy even with 50 mΩ PCB trace resistance. |
Applications
| Server CPU Voltage Regulator | Desktop Platform Power Delivery |
|---|---|
Use Scenario: High-current, multi-core Xeon or EPYC processors requiring rapid load-step response and strict VR11.1 compliance. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller managing core voltage (VDD) with dynamic VID updates and PSI#-triggered phase scaling. Use Value: Enables <100 ns transient response with only 4× 1000 µF output capacitors, reducing BOM cost by 22% versus 3-phase alternatives. |
Use Scenario: Mainstream desktop motherboards supporting Intel 100-series chipsets and Core i5/i7 CPUs. IC Role / Device Role / Timing Role: Core VRM controller interfacing with H_CPURST_N and VR_HOT signals for platform-level thermal and reset coordination. Use Value: Integrated VR_RDY and OVP outputs simplify motherboard power-good logic; eliminates need for external comparators or sequencers. |
| Coupled-Inductor VRM Design | Thermally Managed VRM |
Use Scenario: Space-constrained embedded or workstation boards using coupled inductors to reduce component count and footprint. IC Role / Device Role / Timing Role: Configured for 4-phase operation with ISL6620 drivers; leverages APA and APP to maintain stability despite shared magnetic coupling. Use Value: Supports 2-phase coupled inductor topology with full phase-dropping capability - cuts inductor count by 50% while maintaining <±5 mV regulation error. |
Use Scenario: High-performance computing systems where VR temperature directly impacts CPU throttling and reliability. IC Role / Device Role / Timing Role: Monitors VR temperature via TM/NTC network and adjusts droop slope and OCP threshold in real time through TCOMP. Use Value: Prevents false OCP trips due to DCR drift at elevated temperatures - extends safe operating time under sustained 100% CPU load by >18 minutes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336BIRZ | Same die, extended temperature range (-40°C to +85°C); higher system accuracy tolerance (±0.6% VID) at full temp range. | Required for industrial or embedded platforms operating outside 0–70°C ambient. | Select ISL6336BIRZ when board-level thermal management cannot guarantee junction temperature stays within 0–70°C. |
| ISL6322CRZ | 4-phase VR11.1 controller; lacks APA, TCOMP, and IMON; lower system accuracy (±0.8% VID); no coupled-inductor support. | Suitable only for mid-tier desktops with ≤120 W CPU TDP and no thermal compensation requirement. | Choose ISL6322CRZ only if phase count, thermal compensation, and IMON monitoring are not required - not a drop-in replacement. |
Compared with ISL6336BCRZ-T, ISL6336BIRZ offers wider thermal qualification but identical functionality, while ISL6322CRZ sacrifices phase count, transient performance, and thermal adaptability to reduce cost - making it viable only in thermally benign, lower-power applications.
Availability
ISL6336BCRZ-T is available at Aetrix Electronics and suitable for server motherboard design, high-end desktop VRMs, and thermally managed CPU power delivery systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL6336BCRZ-T 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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in high-performance analog and power management ICs for computing, industrial, and communications markets.
The ISL6336BCRZ-T belongs to Intersil's VR11.x-compliant multiphase PWM controller product line, designed specifically for high-efficiency, high-transient-response CPU voltage regulation in x86 platforms.
FAQ
What is the operating temperature range for the ISL6336BCRZ-T?
The ISL6336BCRZ-T is rated for 0°C to +70°C ambient operation. Its electrical specifications - including ±0.5% system accuracy and current-sense tolerance - are guaranteed across this range. Junction temperature must remain below +150°C, and thermal design should account for θJA = 29°C/W in typical layouts. For extended temperature applications, the ISL6336BIRZ variant is recommended.
How does the ISL6336BCRZ-T implement phase dropping for light-load efficiency?
The ISL6336BCRZ-T uses the PSI# input signal to initiate proprietary phase dropping: when PSI# is asserted low, it reduces active phases to 1 or 2 and enables diode emulation on inactive phases to minimize switching and conduction losses. This behavior is optimized via FS and SS pin configuration and requires compatible drivers like ISL6620/ISL6622 for proper diode emulation timing.
Can the ISL6336BCRZ-T support DCR current sensing with coupled inductors?
Yes, the ISL6336BCRZ-T supports DCR-based current sensing in coupled-inductor topologies. Its ISEN+/- inputs accept the voltage across RC networks placed at the coupled inductor nodes, and its APA/APP modulation maintains stability despite mutual coupling effects. Application notes on pages 5–6 of FN6696 confirm 4-phase coupled-inductor operation with ISL6620 drivers.
What is the function of the TCOMP pin on the ISL6336BCRZ-T?
The TCOMP pin on the ISL6336BCRZ-T accepts a scaled voltage from the TM/NTC network to dynamically adjust the gain of the current-sense amplifiers and the overcurrent protection threshold. This integrated temperature compensation compensates for the positive temperature coefficient of inductor DCR, ensuring consistent droop slope and OCP accuracy across the full operating temperature range.
Is the ISL6336BCRZ-T pin-compatible with other ISL6336 variants?
Yes, the ISL6336BCRZ-T shares identical pinout and footprint with ISL6336BIRZ and ISL6336CRZ. All variants use the same 48-lead QFN package (L48.7x7) and have functionally identical pin assignments. However, temperature rating, system accuracy specs, and guaranteed performance limits differ - so thermal validation is required when substituting ISL6336BCRZ-T into designs originally qualified with IRZ-grade parts.
ISL6336BCRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
ISL6336BCRZ-T FAQ
1.How can I place an order for ISL6336BCRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6336BCRZ-T 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 ISL6336BCRZ-T reliable?
The price and inventory of ISL6336BCRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6336BCRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6336BCRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6336BCRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6336BCRZ-T?
ISL6336BCRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6336BCRZ-T 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 ISL6336BCRZ-T?
For technical support, including ISL6336BCRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6336BCRZ-T requirements.
6.How does Aetrix verify that ISL6336BCRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6336BCRZ-T 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 ISL6336BCRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6336BCRZ-T?
All ISL6336BCRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6336BCRZ-T, 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 ISL6336BCRZ-T part is unused and in its original packaging.
Return procedure for ISL6336BCRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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