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Renesas ISL6566CRZA-TR5184
- Part No.:
- ISL6566CRZA-TR5184
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6566CRZA-TR5184.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,328
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Product details
Overview
ISL6566CRZA-TR5184 from Renesas (formerly Intersil) is a three-phase buck PWM controller with integrated high- and low-side MOSFET drivers, designed for precision core voltage regulation of Intel VRM9/VRM10 and AMD Hammer microprocessors. It supports 1–3-phase operation, delivers ±0.5% system accuracy over temperature, uses dual DCR/rDS(ON) current sensing for load-line droop and channel-current balance, and operates up to 1.5 MHz per phase in server and desktop CPU power delivery.
For engineers reviewing the ISL6566CRZA-TR5184 datasheet, ISL6566CRZA-TR5184 pinout, ISL6566CRZA-TR5184 application, or ISL6566CRZA-TR5184 equivalent, this device is selected for high-efficiency, space-constrained multi-phase VRM designs requiring differential remote sensing, programmable VID decoding, digital soft-start, and multi-tiered overvoltage/overcurrent protection.
Technical Context
The ISL6566CRZA-TR5184 implements interleaved three-phase PWM control using a sawtooth oscillator with selectable frequency (225–275 kHz base, up to 1.5 MHz via external resistor), adaptive non-overlap timing (10 ns UGATE/LGATE turn-on delay), and independent channel PWM logic driven by error amplifier output minus current-correction signal. Its internal DAC decodes 5–6-bit VID inputs per VRM9, VRM10, or AMD Hammer standards.
Current sensing combines lossless inductor DCR sampling (for load line positioning and OCP) with rDS(ON) sampling (for per-channel current balancing), both referenced to IREF/ISUM/ICOMP nodes. Protection includes clamping-based overvoltage response, 80–84% VID undervoltage threshold, open-sense-line detection (VDIFF + 0.9–1.1 V), and thermal shutdown at 160°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Three-phase synchronous buck PWM controller with integrated gate drivers |
| VID Compatibility | Programmable for Intel VRM9.0, VRM10.0, and AMD Hammer microprocessor voltage identification codes |
| System Accuracy | ±0.5% over temperature for VID = 1.0–1.85 V; enables tight CPU core voltage tolerance |
| Current Sensing | Dual-method: DCR-based for droop/OCP; rDS(ON)-based for channel-current balance |
| Switching Frequency | Selectable up to 1.5 MHz per phase; base frequency 225–275 kHz with RT resistor |
| Protection Features | Multi-tier OVP (clamping mode), UVP (80–84% VID), OCP (100 µA OCSET trip), open-sense-line detection, thermal shutdown (160°C) |
| Package | 40-pin 6×6 mm QFN, Pb-free (RoHS compliant), θJA = 32°C/W |
Pinout & Package
ISL6566CRZA-TR5184 is housed in a 40-lead 6×6 mm QFN package with exposed thermal pad. Pin functions are defined per the official FN9178 Rev 4.00 datasheet top-view layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID4, VID12.5 | Voltage ID input | Decode 5–6-bit digital code to set target output voltage per VRM9/VRM10/AMD standard |
| UGATE1–3, LGATE1–3 | Gate drive outputs | Drive upper/lower MOSFET gates per phase; include shoot-through prevention logic |
| ISEN1–3 | rDS(ON) current sense input | Sample lower-FET conduction current for per-channel balancing |
| ISUM, IREF, ICOMP | DCR current sense interface | Implement lossless inductor current sensing for droop and overcurrent protection |
| VSEN, RGND, VDIFF | Differential remote sense | Compensate for PCB IR drop between regulator and CPU VDD/VSS pins |
| OCSET | Overcurrent threshold set | 100 µA sink sets OCP trip point via external resistor to ICOMP |
| ENLL | Enable input | 0.66 V threshold enable with 100 mV hysteresis; disables all channels when low |
| PGOOD | Power-good indicator | Open-drain output asserted high only when output is within ±5% UV/OV limits post-soft-start |
Key Features
| Feature | Design Value |
|---|---|
| Dual current sensing architecture | Simultaneous DCR (load line/OCP) and rDS(ON) (channel balance) sensing eliminates need for separate current-sense resistors |
| Dynamic VID support | Real-time voltage scaling during CPU state transitions via VID code updates without reconfiguration |
| Adjustable reference offset | OFS pin sinks or sources 50 µA to generate precise positive/negative DC offset across FB–VDIFF resistor network |
| Variable gate drive bias | PVCC1–3 accept 5–12 V supply, enabling optimization of MOSFET switching speed and gate charge delivery |
| Digital soft-start | Internally controlled ramp-up of reference voltage prevents inrush current and ensures monotonic VOUT rise |
Applications
| Server CPU Power Delivery | Desktop Processor VRM |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon or EPYC processors under dynamic 10–200 A load transients. IC Role / Device Role / Timing Role: Three-phase PWM controller managing interleaved high-frequency switching, remote sensing, and real-time current balancing across six power stages. Use Value: Enables <1.5% output deviation during 50 A/µs load steps while maintaining thermal uniformity across phases via rDS(ON)-based current matching. |
Use Scenario: Compact 3-phase VRM on ATX motherboard supplying 1.2–1.4 V to Intel Core i7/i9 or AMD Ryzen CPUs. IC Role / Device Role / Timing Role: Integrated controller/driver delivering synchronized PWM signals, VID decoding, and differential sensing to minimize board area and BOM count. Use Value: Reduces external component count by integrating drivers and supporting single-resistor OCP/offset programming, accelerating layout and validation. |
| Laptop High-Performance Mode | Workstation GPU Core Supply |
Use Scenario: Adaptive voltage scaling for mobile CPUs during turbo boost, requiring fast VID updates and tight regulation. IC Role / Device Role / Timing Role: Dynamic VID-enabled controller adjusting output in <100 µs per VID step while maintaining ±0.5% accuracy across 0–70°C ambient. Use Value: Achieves energy-efficient performance scaling without sacrificing voltage stability or triggering CPU throttling due to droop. |
Use Scenario: Multi-phase core rail for professional GPUs (e.g., NVIDIA RTX A-series) demanding >300 W at sub-1 V with minimal ripple. IC Role / Device Role / Timing Role: High-bandwidth three-phase controller using 1.5 MHz switching and DCR sensing to suppress output ripple below 10 mVpp. Use Value: Delivers clean, low-noise power enabling stable GPU clock frequencies and preventing artifacting in compute-intensive rendering workloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6566CR-TR5184 | Same silicon, Pb-containing (non-RoHS) QFN package; identical electrical specs and pinout | Not suitable for RoHS-compliant production; requires SnPb solder process | Select ISL6566CRZA-TR5184 for lead-free assembly; use ISL6566CR-TR5184 only if legacy SnPb reflow is mandated. |
| RT8803AZQW | Three-phase controller with integrated drivers; supports VRM10/11 but lacks AMD Hammer VID decoding and DCR+rDS(ON) dual sensing | Targeted at newer Intel platforms; no native AMD compatibility or same level of current-sense flexibility | Choose RT8803AZQW for Intel-only designs needing higher integration density; retain ISL6566CRZA-TR5184 for AMD support or dual-sensing requirement. |
Compared with ISL6566CR-TR5184 and RT8803AZQW, the ISL6566CRZA-TR5184 uniquely combines RoHS compliance, full AMD/Intel VID coverage, and dual-method current sensing-making it the only option among the three for mixed-platform or thermally balanced multi-phase designs requiring both droop control and per-phase current matching.
Availability
ISL6566CRZA-TR5184 is available at Aetrix Electronics and suitable for server CPU power delivery, desktop VRM design, and workstation GPU core supply requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for ISL6566CRZA-TR5184 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 the ISL6566 product family. Renesas is a global semiconductor leader specializing in analog, power, and embedded processing solutions.
The ISL6566CRZA-TR5184 belongs to Renesas' high-performance power management IC portfolio, engineered specifically for multi-phase CPU/GPU core voltage regulation in computing infrastructure where precision, reliability, and thermal efficiency are critical.
FAQ
What is the operating temperature range for the ISL6566CRZA-TR5184?
The ISL6566CRZA-TR5184 is rated for 0°C to 70°C ambient operation, as confirmed in the FN9178 Rev 4.00 datasheet ordering information table. This commercial-grade rating applies to all ISL6566CR and ISL6566CRZ variants, distinguishing them from industrial-grade ISL6566IR/IRZ parts rated for –40°C to 85°C. Thermal derating must be applied above 70°C ambient.
Does the ISL6566CRZA-TR5184 support AMD Hammer microprocessors?
Yes, the ISL6566CRZA-TR5184 fully supports AMD Hammer VID codes via the VRM10 and VID12.5 pin configuration: when VRM10 is low and VID12.5 is low, the internal DAC decodes 5-bit VID inputs per Table 2 in FN9178 Rev 4.00, enabling precise voltage setting from 0.800 V to 1.550 V in 25-mV steps for compatible AMD processors.
How is overcurrent protection configured on the ISL6566CRZA-TR5184?
Overcurrent protection on the ISL6566CRZA-TR5184 is set using an external resistor from OCSET to ICOMP. The IC sources a precise 100 µA current from OCSET, generating a reference voltage proportional to the resistor value. When the DCR-sensed voltage at ISUM exceeds this reference, OCP triggers-turning off all upper MOSFETs and activating lower-side clamping to protect the CPU.
Can the ISL6566CRZA-TR5184 operate in single-phase mode?
Yes, the ISL6566CRZA-TR5184 supports 1-, 2-, or 3-phase operation. To configure single-phase mode, both PVCC2 and PVCC3 must be left unconnected or grounded, disabling channels 2 and 3. Only PHASE1, UGATE1, LGATE1, BOOT1, and associated ISEN1/ISEN AMP circuitry remain active, with PWM1 controlling the sole power stage.
What is the purpose of the OFS pin on the ISL6566CRZA-TR5184?
The OFS pin on the ISL6566CRZA-TR5184 provides programmable DC offset for the feedback loop: connecting a resistor from OFS to GND sources +50 µA to create a positive offset voltage across the FB–VDIFF resistor; connecting to VCC sinks –50 µA for negative offset. This enables fine-tuning of output voltage beyond VID-set values to compensate for board losses or margin testing.
ISL6566CRZA-TR5184 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VRM9, VRM10, AMD Hammer Applications
- Voltage - Input:
- 3V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.8V ~ 1.6V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL6566CRZA-TR5184 FAQ
1.How can I place an order for ISL6566CRZA-TR5184 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6566CRZA-TR5184 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 ISL6566CRZA-TR5184 reliable?
The price and inventory of ISL6566CRZA-TR5184 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6566CRZA-TR5184 is usually 5 days.
3.What payment methods are accepted for ISL6566CRZA-TR5184?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6566CRZA-TR5184 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6566CRZA-TR5184?
ISL6566CRZA-TR5184 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6566CRZA-TR5184 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 ISL6566CRZA-TR5184?
For technical support, including ISL6566CRZA-TR5184 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6566CRZA-TR5184 requirements.
6.How does Aetrix verify that ISL6566CRZA-TR5184 is sourced from the original manufacturer or authorized distributors?
All ISL6566CRZA-TR5184 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 ISL6566CRZA-TR5184 meets industry standards.
7.What is the process for return or replacement of ISL6566CRZA-TR5184?
All ISL6566CRZA-TR5184 units undergo pre-shipment inspection (PSI). If there is an issue with ISL6566CRZA-TR5184, 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 ISL6566CRZA-TR5184 part is unused and in its original packaging.
Return procedure for ISL6566CRZA-TR5184:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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