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Renesas ISL6566CRZ-TR5184
- Part No.:
- ISL6566CRZ-TR5184
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6566CRZ-TR5184.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,558
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Product details
Overview
ISL6566CRZ-TR5184 from Renesas Electronics (formerly Intersil) is a three-phase buck PWM controller with integrated high- and low-side MOSFET drivers, designed for precision core voltage regulation in Intel VRM9/VRM10 and AMD Hammer microprocessor power delivery systems. 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.
For engineers reviewing the ISL6566CRZ-TR5184 datasheet, ISL6566CRZ-TR5184 pinout, ISL6566CRZ-TR5184 application, or ISL6566CRZ-TR5184 equivalent, this device is selected for high-efficiency, space-constrained CPU/GPU VRM designs requiring remote differential sensing, programmable VID decoding, digital soft-start, and multi-tier overvoltage/overcurrent protection.
Technical Context
The ISL6566CRZ-TR5184 implements interleaved three-phase PWM control with adaptive non-overlap timing, using a sawtooth oscillator and error amplifier with 96 dB DC gain and 20 MHz GBW. Its architecture integrates channel-current balancing via rDS(ON) sampling and load-line positioning via lossless DCR sensing - both sampled during forced-off time windows synchronized to PWM falling edges.
It decodes 5- or 6-bit VID inputs for Intel VRM9, VRM10, or AMD Hammer DAC standards based on VRM10 and VID12.5 pin states, and provides differential remote sensing (VDIFF output), adjustable reference offset (OFS pin), and programmable switching frequency (FS pin with external resistor).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Three-phase synchronous buck PWM controller with integrated gate drivers |
| VID Compatibility | Intel VRM9, VRM10, and AMD Hammer microprocessor voltage identification standards |
| System Accuracy | ±0.5% over temperature for VID = 1.0V–1.85V; enables tight CPU core voltage tolerance |
| Current Sensing | Dual-method: lossless DCR for load-line droop & OCP; rDS(ON) for per-channel current balance |
| Switching Frequency | Up to 1.5 MHz per phase; set via FS pin resistor; supports high-density, low-inductance designs |
| Gate Drive Bias | 5V–12V programmable PVCC supply per channel; enables optimization of MOSFET switching loss vs. drive strength |
| Protection Features | Multi-tier OVP (clamps with lower FETs), UVP, open-sense-line detection, thermal shutdown at 160°C |
Pinout & Package
ISL6566CRZ-TR5184 is housed in a Pb-free 40-lead 6×6 mm QFN package (PKG DWG # L40.6x6) with exposed thermal pad, rated for 0°C to +70°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID4, VID12.5 | Digital voltage ID inputs | Decode 5-/6-bit microprocessor VID codes; internal 40 µA pull-ups; logic thresholds compatible with TTL |
| VRM10 | DAC standard selection | High = VRM10.0; low + VID12.5 high = VRM9.0; low + VID12.5 low = AMD Hammer |
| VSEN / RGND | Differential remote sense inputs | Connect to load sense points; enable accurate regulation despite PCB IR drop |
| VDIFF | Differential amplifier output | Sum of remote-sensed voltage and DCR-based droop voltage; fed to error amplifier |
| UGATE1–3 / LGATE1–3 | Upper/lower gate drive outputs | Drive external N-channel MOSFETs; include shoot-through protection and adaptive non-overlap |
| BOOT1–3 | Bootstrap bias terminals | Supply floating gate drive for upper FETs; connect to external bootstrap capacitors |
| PHASE1–3 | High-side source return | Return path for upper gate drivers; connect to sources of high-side MOSFETs |
| ISEN1–3 | rDS(ON) current sense inputs | Sample lower-FET conduction current for per-channel balancing; require external RISEN |
| ISUM / IREF / ICOMP | DCR current sense interface | Implement lossless inductor DCR sensing for load line and overcurrent protection |
| OFS | Reference offset programming | Sink/source 50 µA to generate positive/negative DC offset across FB–VDIFF resistor network |
| OCSET | Overcurrent threshold setting | 100 µA current sink sets OCP trip point by resistor to ICOMP; enables precise, adjustable protection |
| ENLL | Enable input | 0.66 V threshold with 100 mV hysteresis; internal 1 µA pull-up to 5 V |
| PGOOD | Power-good indicator | Open-drain output pulled low during UV/OV faults, OCP, or before soft-start completion |
| FS | Frequency select | Resistor-to-ground sets oscillator frequency (e.g., 100 kΩ → 250 kHz typical) |
| PVCC1–3 | Per-channel gate drive supplies | Accept 5–12 V; determine number of active phases (unconnected = disable phase) |
| VCC | Bias supply | +5 V ±5%; powers internal logic, DAC, and error amplifier; requires local 1 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFET drivers | Eliminates need for external driver ICs; reduces BOM count and layout area in multi-phase VRMs |
| Dual current sensing | Simultaneous rDS(ON) (channel balance) and DCR (droop + OCP) sensing improves regulation accuracy and reliability |
| Differential remote sensing | Compensates for PCB trace resistance between VRM and CPU; maintains ±0.5% regulation at load |
| Dynamic VID technology | Supports real-time VID changes during operation; enables processor power-state transitions without reset |
| Selectable phase count | 1-, 2-, or 3-phase operation configured via PVCC2/PVCC3 connection state; simplifies design reuse |
| Digital soft-start | Programmable ramp prevents inrush current; ensures controlled VOUT rise without external components |
Applications
| CPU Core Voltage Regulation | GPU Power Delivery |
|---|---|
Use Scenario: Regulating core voltage for Intel Pentium 4, Xeon, or AMD Athlon 64 processors in desktop/server motherboards. IC Role / Device Role / Timing Role: Primary three-phase PWM controller managing VID decoding, current sharing, droop, and protection. Use Value: Enables compliance with VRM9/VRM10/AMD Hammer specifications while achieving <1% total output error under dynamic load transients. | Use Scenario: Delivering stable, high-current power to discrete graphics processing units in gaming PCs and workstations. IC Role / Device Role / Timing Role: Multi-phase VRM controller coordinating three independent buck stages with synchronized interleaving. Use Value: Reduces output ripple amplitude by ~67% versus single-phase, allowing smaller output capacitors and lower ESR requirements. |
| Server Memory Regulator | High-Performance FPGA Core Supply |
Use Scenario: Providing tightly regulated 1.2–1.8 V supply to DDR2/DDR3 memory subsystems in enterprise servers. IC Role / Device Role / Timing Role: Precision voltage controller with remote sensing and load-line programming for memory VDDQ/VDD rails. Use Value: Maintains voltage within ±15 mV of target across 0–100 A load range using DCR-based droop compensation. | Use Scenario: Powering high-gate-count FPGAs (e.g., Xilinx Virtex-4/5, Altera Stratix II/III) requiring fast transient response and low noise. IC Role / Device Role / Timing Role: Adaptive three-phase controller supporting dynamic VID updates and thermal-aware current balancing. Use Value: Delivers <500 ns load-step response with <2% undershoot/overshoot using integrated error amplifier and fast gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6566IRZ-T | Same die, extended temperature range (−40°C to +85°C); identical pinout and electrical specs | Required for industrial or server environments with wider ambient operating range | Select ISL6566IRZ-T when board-level operating temperature exceeds 70°C ambient |
| RT8802A | Three-phase controller with integrated drivers; supports VRM10/11 but lacks AMD Hammer VID decoding and DCR+rDS(ON) dual sensing | Used in newer Intel platforms; not suitable for legacy AMD Hammer or mixed-VID designs | Choose RT8802A only for VRM10/11-compliant Intel-only systems requiring RoHS-6 and lower quiescent current |
Compared with ISL6566CRZ-TR5184, ISL6566IRZ-T offers identical functionality with extended thermal rating, while RT8802A provides updated VRM support but omits AMD compatibility and dual-sensing capability-making ISL6566CRZ-TR5184 irreplaceable for legacy multi-architecture VRM designs.
Availability
ISL6566CRZ-TR5184 is available at Aetrix Electronics and suitable for CPU voltage regulation, GPU power delivery, server memory regulation, and high-performance FPGA core supply requiring stable component supply across long-lifecycle embedded and computing programs.
Supply support for ISL6566CRZ-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 Corporation acquired Intersil in 2017 and continues to manufacture and support its high-performance analog and power management portfolio.
The ISL6566 product line was developed specifically for advanced microprocessor voltage regulation modules (VRMs), targeting Intel and AMD CPU/GPU power delivery with integrated drivers, precision sensing, and multi-standard VID compatibility.
FAQ
What is the operating temperature range for the ISL6566CRZ-TR5184?
The ISL6566CRZ-TR5184 is rated for 0°C to +70°C ambient operating temperature. This commercial-grade specification is defined in the ordering information table of the FN9178 datasheet and applies specifically to the CRZ suffix variant. For extended temperature operation (−40°C to +85°C), the ISL6566IRZ-T is the qualified alternative part.
Does the ISL6566CRZ-TR5184 support AMD Hammer microprocessors?
Yes, the ISL6566CRZ-TR5184 supports AMD Hammer VID codes when VRM10 is grounded and VID12.5 is also grounded, as specified in Table 1 of the FN9178 datasheet. It decodes the full 5-bit AMD Hammer VID table (0.800 V to 1.550 V in 25 mV steps) and provides corresponding core voltage regulation with ±0.5% system accuracy.
How is switching frequency set on the ISL6566CRZ-TR5184?
Switching frequency is set by an external resistor connected from the FS pin to ground. The datasheet specifies that a 100 kΩ resistor yields a typical 250 kHz frequency per phase, with a range up to 1.5 MHz achievable. Equation 34 in the FN9178 datasheet provides the exact calculation, and frequency scales inversely with resistor value.
What current sensing methods does the ISL6566CRZ-TR5184 use?
The ISL6566CRZ-TR5184 uses two independent current sensing methods: lossless inductor DCR sensing (via ISUM/IREF/ICOMP pins) for load-line droop and overcurrent protection, and rDS(ON) sensing (via ISEN1–3 pins) for per-channel current balancing. Both are implemented simultaneously and validated in the block diagram and functional description on pages 3 and 9 of FN9178.
Is the ISL6566CRZ-TR5184 RoHS compliant?
Yes, the ISL6566CRZ-TR5184 is RoHS compliant. The "Z" in the part number denotes Pb-free packaging (matte tin termination), and the datasheet footnote confirms it meets IPC/JEDEC J-STD-020 reflow requirements for Pb-free processes. It is classified as "Pb-Free Plus Anneal" per Intersil's material definition.
ISL6566CRZ-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)
ISL6566CRZ-TR5184 FAQ
1.How can I place an order for ISL6566CRZ-TR5184 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6566CRZ-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 ISL6566CRZ-TR5184 reliable?
The price and inventory of ISL6566CRZ-TR5184 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6566CRZ-TR5184 is usually 5 days.
3.What payment methods are accepted for ISL6566CRZ-TR5184?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6566CRZ-TR5184 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6566CRZ-TR5184?
ISL6566CRZ-TR5184 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6566CRZ-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 ISL6566CRZ-TR5184?
For technical support, including ISL6566CRZ-TR5184 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6566CRZ-TR5184 requirements.
6.How does Aetrix verify that ISL6566CRZ-TR5184 is sourced from the original manufacturer or authorized distributors?
All ISL6566CRZ-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 ISL6566CRZ-TR5184 meets industry standards.
7.What is the process for return or replacement of ISL6566CRZ-TR5184?
All ISL6566CRZ-TR5184 units undergo pre-shipment inspection (PSI). If there is an issue with ISL6566CRZ-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 ISL6566CRZ-TR5184 part is unused and in its original packaging.
Return procedure for ISL6566CRZ-TR5184:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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