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Renesas ISL6568IRZ
- Part No.:
- ISL6568IRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL6568IRZ.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
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Product details
Overview
ISL6568IRZ from Renesas (formerly Intersil) is a two-phase buck PWM controller with integrated MOSFET drivers, designed for precision core voltage regulation in Intel VRM9/VRM10 and AMD Hammer microprocessor power delivery systems. It supports -40°C to +85°C operation, delivers ±0.5% system accuracy over temperature, enables DCR- and rDS(ON)-based current sensing, and provides programmable 225–275 kHz switching frequency per phase.
For engineers reviewing the ISL6568IRZ datasheet, ISL6568IRZ pinout, ISL6568IRZ application, or ISL6568IRZ equivalent, key selection considerations include its dual-phase interleaved control architecture, differential remote voltage sensing, lossless load-line droop programming, channel-current balancing via rDS(ON) sampling, and multi-tiered overvoltage/undervoltage/overcurrent protection for high-reliability CPU power rails.
Technical Context
The ISL6568IRZ implements a synchronous two-phase buck topology with adaptive non-overlap timing and shoot-through protection. Its dual-channel gate drivers support 5V–12V PVCC bias, deliver <3.0Ω upper drive source resistance and <1.35Ω lower drive sink resistance, and operate with 66.6% maximum duty cycle per phase.
It integrates a 6-bit VID DAC with selectable Intel VRM9/VRM10 or AMD Hammer encoding, a unity-gain differential remote-sense amplifier (VDIFF output), and dual-path current sensing: continuous inductor DCR sampling for load-line droop and overcurrent protection, plus per-phase rDS(ON) sampling on ISEN1/ISEN2 for precise channel-current balance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | -40°C to +85°C - qualified for industrial and extended-temperature CPU power applications |
| System Accuracy | ±0.5% over temp (VID = 1.0V–1.85V) - ensures tight core voltage tolerance under thermal stress |
| Switching Frequency | 225–275 kHz per phase (RT = 100kΩ) - balances efficiency, size, and EMI for VRM-compliant designs |
| Current Sensing | DCR + rDS(ON) dual-mode - DCR enables lossless droop and OCP; rDS(ON) enables per-phase current matching |
| VID Compatibility | Intel VRM9, VRM10, AMD Hammer - selectable via VID12.5 pin configuration |
| Gate Drive Bias | 5V to 12V PVCC - supports wide-range MOSFET VGS optimization for Rds(on) and switching loss trade-offs |
| OVP Threshold | VID + 125–175 mV - clamps output by turning on lower FETs to protect CPU during transient overvoltage |
Pinout & Package
ISL6568IRZ is housed in a 32-lead 5 mm × 5 mm QFN package (Pb-free, exposed thermal pad), optimized for high-density CPU VRM layouts with low thermal resistance (θJC = 5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Bias supply input | +5V ±5% supply for internal logic and error amplifier; requires local 1.0µF ceramic decoupling |
| PVCC | Power MOSFET driver supply | +5V to +12V adjustable gate drive voltage; sets UGATE/LGATE drive strength and slew rates |
| UGATE1/UGATE2 | Upper MOSFET gate drivers | Phase-synchronized high-side gate outputs with adaptive non-overlap (≤10 ns) to prevent shoot-through |
| LGATE1/LGATE2 | Lower MOSFET gate drivers | Synchronous rectifier control outputs; fast fall time (≤12 ns) minimizes conduction loss in low-side FETs |
| VSEN/RGND | Differential remote sense inputs | Connect directly to CPU VDD/VSS sense points to compensate PCB IR drop and ensure accurate load-point regulation |
| ISEN1/ISEN2 | rDS(ON) current sense inputs | Sample lower-FET conduction voltage to generate per-phase current signals for active channel balancing |
| OCSET | Overcurrent threshold set | 100 µA sink current sets OCP trip point; external resistor defines voltage reference vs. ISUM for fault detection |
| ENLL | Enable with hysteresis | 0.66 V rising threshold with 100 mV hysteresis; internal 1 µA pull-up enables simple power-sequencing control |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase interleaved control | Reduces input/output ripple amplitude by factor of √2 vs. single-phase; enables smaller bulk capacitors and lower RMS input current |
| Differential remote voltage sensing | Compensates for PCB trace resistance between VRM and CPU; eliminates load-induced regulation error at point-of-load |
| DCR + rDS(ON) hybrid current sensing | DCR path provides continuous, lossless load-line droop and OCP; rDS(ON) path enables real-time per-phase current matching without added resistors |
| Dynamic VID-on-the-fly | Supports runtime voltage scaling via VID code updates; REF pin capacitor smooths transitions to prevent glitch-induced CPU reset |
| Multi-tiered overvoltage protection | Clamps output using lower FETs during fast transients; includes open-sense-line detection (VDIFF ±1.0 V threshold) to prevent false regulation |
Applications
| Desktop CPU Power Delivery | Laptop CPU Core Regulation |
|---|---|
Use Scenario: Dual-phase VRM supplying core voltage to Intel Pentium 4 or AMD Athlon 64 processors on ATX motherboards. IC Role / Device Role / Timing Role: Primary PWM controller managing phase interleaving, VID decoding, remote sensing, and per-phase current balancing. Use Value: Enables ±0.5% voltage accuracy across -40°C to +85°C while reducing output capacitance by >30% versus single-phase solutions. | Use Scenario: Compact two-phase regulator powering mobile AMD Hammer CPUs in space-constrained notebook platforms. IC Role / Device Role / Timing Role: Integrated controller with embedded gate drivers replaces discrete PWM + dual driver ICs, saving PCB area and BOM count. Use Value: Achieves thermal derating margin via distributed power loss across two phases, eliminating need for large heatsinks in thin form factors. |
| Server Processor VRM | Embedded x86 Computing |
Use Scenario: High-current VRM delivering up to 60 A to dual-core Xeon processors in 1U rack servers. IC Role / Device Role / Timing Role: Two-phase controller implementing DCR-based load-line droop to meet Intel VRM9/VRM10 transient response specs. Use Value: Uses lossless DCR sensing to maintain tight voltage positioning without shunt resistor power loss or thermal drift. | Use Scenario: Industrial PC motherboard powering VIA C7 or AMD Geode processors in fanless embedded systems. IC Role / Device Role / Timing Role: Robust controller supporting extended temperature range (-40°C to +85°C) and multiple VID standards for legacy compatibility. Use Value: Single IC supports both Intel and AMD VID protocols via VID12.5 pin strapping-reducing firmware complexity and qualification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6566CRZ | Same architecture but 0°C to +70°C rating; lacks extended-temp qualification and tighter thermal shutdown thresholds | Restricted to commercial-temperature desktop boards; not suitable for industrial or server environments requiring -40°C startup | Select ISL6566CRZ only when ambient operating range is strictly 0–70°C and cost sensitivity outweighs thermal robustness needs |
| RT8802AGQW | Three-phase capable; uses different VID mapping (no AMD Hammer support); higher max frequency (1.2 MHz) | Designed for newer Intel VR12/VR12.5 platforms; incompatible with AMD Hammer VID codes and VRM9/VRM10 DAC tables | Choose RT8802AGQW only for next-gen Intel CPU designs requiring >2 phases or >1 MHz switching; not a functional substitute for ISL6568IRZ in legacy AMD/VRM9 systems |
Compared with ISL6566CRZ, the ISL6568IRZ adds industrial temperature range and enhanced thermal protection; compared with RT8802AGQW, it retains full AMD Hammer and VRM9/VRM10 compatibility but limits to two phases and lower max frequency-making it the sole validated option for legacy high-reliability x86 CPU VRMs.
Availability
ISL6568IRZ is available at Aetrix Electronics and suitable for desktop CPU power delivery, laptop core regulation, server processor VRMs, and embedded x86 computing requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ISL6568IRZ 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 maintains full technical and supply chain support for legacy Intersil power management ICs including the ISL6568 family.
The ISL6568 belongs to Renesas' high-precision CPU voltage regulator controller product line, engineered specifically for multi-phase VRM compliance with Intel VRM9/VRM10 and AMD Hammer specifications in demanding compute platforms.
FAQ
What is the operating temperature range of the ISL6568IRZ?
The ISL6568IRZ is rated for -40°C to +85°C ambient operation, making it suitable for industrial, server, and extended-temperature embedded applications where commercial-grade controllers (e.g., ISL6566CRZ, 0°C to +70°C) would fail. This range is confirmed in the Ordering Information table on page 2 of FN9187 Rev 5.00 and enforced by thermal shutdown setpoints at +160°C (trip) and +100°C (recovery).
How does the ISL6568IRZ implement current sensing for load-line droop and channel balancing?
The ISL6568IRZ uses two independent current sensing methods: inductor DCR sensing (via ISUM/IREF/ICOMP pins) for continuous, lossless load-line droop and overcurrent protection; and MOSFET rDS(ON) sensing (via ISEN1/ISEN2 pins) for per-phase current sampling used exclusively in the patented channel-current balance algorithm. Both paths are implemented simultaneously and do not share components or signal paths.
Which VID standards does the ISL6568IRZ support, and how is selection configured?
The ISL6568IRZ supports Intel VRM9, Intel VRM10, and AMD Hammer VID standards. Selection is controlled solely by the VID12.5 pin: <3V selects VRM10; 50 kΩ to +5V selects VRM9; 5 kΩ to +5V selects AMD Hammer. This configuration is defined in Table 1 of FN9187 Rev 5.00 and applies identically to ISL6568IRZ per its ordering row and package marking.
What package type and thermal characteristics does the ISL6568IRZ use?
The ISL6568IRZ uses a 32-lead 5 mm × 5 mm QFN package (Pb-free, exposed thermal pad) with drawing number L32.5x5. Its thermal resistance is θJA = 35°C/W (free air) and θJC = 5°C/W (junction-to-case), enabling efficient heat transfer to the PCB ground plane. This package is shared across all ISL6568 variants including ISL6568IRZ, as confirmed in the Ordering Information table on page 2.
Does the ISL6568IRZ integrate MOSFET gate drivers, and what are their key drive capabilities?
Yes, the ISL6568IRZ integrates two fully matched high- and low-side gate drivers per phase. Each driver supports 5V–12V PVCC bias, delivers ≤3.0Ω upper drive source resistance and ≤1.35Ω lower drive sink resistance (at 12V), achieves <26 ns UGATE rise time and <12 ns LGATE fall time into 3 nF loads, and enforces ≤10 ns adaptive non-overlap to prevent shoot-through-fully specified in the Electrical Specifications on pages 6–7 of FN9187 Rev 5.00.
ISL6568IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VRM9, VRM10, AMD Hammer Applications
- Voltage - Input:
- 3V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.84V ~ 1.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
ISL6568IRZ FAQ
1.How can I place an order for ISL6568IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6568IRZ 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 ISL6568IRZ reliable?
The price and inventory of ISL6568IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6568IRZ is usually 5 days.
3.What payment methods are accepted for ISL6568IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6568IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6568IRZ?
ISL6568IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6568IRZ 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 ISL6568IRZ?
For technical support, including ISL6568IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6568IRZ requirements.
6.How does Aetrix verify that ISL6568IRZ is sourced from the original manufacturer or authorized distributors?
All ISL6568IRZ 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 ISL6568IRZ meets industry standards.
7.What is the process for return or replacement of ISL6568IRZ?
All ISL6568IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6568IRZ, 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 ISL6568IRZ part is unused and in its original packaging.
Return procedure for ISL6568IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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