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Renesas ISL6568IR
- Part No.:
- ISL6568IR
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL6568IR.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,227
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Product details
Overview
ISL6568IR from Renesas Electronics (formerly Intersil) is a two-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 -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 ISL6568IR datasheet, ISL6568IR pinout, ISL6568IR application, or ISL6568IR equivalent, this page delivers verified technical context, validated pin functions, confirmed dual-phase VRM/AMD-compatible VID decoding, real-world current-sharing implementation details, and manufacturer-confirmed thermal and protection behavior - all specific to the ISL6568IR variant.
Technical Context
The ISL6568IR implements a two-phase interleaved synchronous buck architecture with integrated gate drivers, supporting both 1- and 2-phase configurations via BOOT2/PHASE2 pin strapping. Its control loop combines a unity-gain differential remote-sense amplifier (VDIFF output), a programmable droop generator using DCR current sensing (ISUM/IREF/ICOMP), and rDS(ON)-based per-channel current sampling (ISEN1/ISEN2) for precise load balancing.
It features dynamic VID-on-the-fly capability, selectable DAC encoding (VRM9/VRM10/AMD Hammer) via VID12.5 pin configuration, multi-tiered OVP/UVP/OCP with clamping and shutdown responses, and adaptive non-overlap timing (10 ns typical) to prevent shoot-through in both upper and lower gate drive paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | -40°C to +85°C - qualified for industrial and extended-temperature server/motherboard applications. |
| Switching Frequency | 225–275 kHz per phase - set by external FS-to-GND resistor; enables optimized efficiency vs. size trade-off. |
| System Accuracy | ±0.5% over temp (VID = 1.0–1.85 V) - ensures tight microprocessor core voltage compliance under thermal stress. |
| Current Sensing | DCR-based droop + rDS(ON)-based channel balance - eliminates sense resistors while maintaining <±3% inter-channel current mismatch. |
| Gate Drive Voltage | 5–12 V (PVCC) - configurable drive strength for optimal Rds(on) utilization and switching loss control. |
| OCP Threshold | 100 µA at OCSET pin - sets overcurrent trip point with ±7% accuracy; enables scalable protection across load ranges. |
| Voltage Identification | 6-bit VID interface (VID0–VID4 + VID12.5) - supports Intel VRM9/VRM10 and AMD Hammer DAC tables with dynamic reprogramming. |
Pinout & Package
ISL6568IR is housed in a 32-lead, 5 mm × 5 mm, 0.5 mm pitch QFN package (Pb-free, RoHS compliant) with exposed thermal pad. The package supports high-power dissipation (θJC = 5°C/W) and requires controlled reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UGATE1 / UGATE2 | Upper MOSFET gate drive outputs | Drive high-side N-channel FETs; include adaptive non-overlap logic to prevent shoot-through. |
| LGATE1 / LGATE2 | Lower MOSFET gate drive outputs | Drive synchronous rectifier FETs; sink/source capability supports fast turn-on/turn-off with minimal dead-time loss. |
| ISEN1 / ISEN2 | rDS(ON) current sense inputs | Sample lower-FET conduction voltage to generate per-channel current feedback for active balancing. |
| ISUM / IREF / ICOMP | DCR current sense amplifier terminals | Implement lossless droop programming: ISUM (−), IREF (+), ICOMP (output); enable load-line positioning. |
| VSEN / RGND | Differential remote voltage sense inputs | Compensate for PCB IR drop between regulator and CPU VDD/VSS pins; reject ground noise up to ±100 mV. |
| VID0–VID4, VID12.5 | Digital voltage identification inputs | Decode 5-bit VID code plus mode-select bit to set output voltage per VRM9/VRM10/AMD Hammer tables. |
| ENLL | Enable input with 0.66 V threshold | Logic-level enable with 100 mV hysteresis; internal 1 µA pull-up allows simple open-drain control. |
| PGOOD | Power-good status output | Open-drain signal pulled low during UV/OV faults, OCP events, or before soft-start completion. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-phase PWM + drivers | Reduces BOM count by eliminating two discrete driver ICs; enables compact 2-phase VRM layout with single IC. |
| Dual-method current sensing | Combines DCR (for droop/voltage positioning) and rDS(ON) (for per-phase current matching) - no external sense resistors required. |
| Dynamic VID-on-the-fly | Allows real-time core voltage adjustment during processor P-state transitions without interrupting regulation. |
| Multi-tier overvoltage protection | Clamps output via lower-FET turn-on when VSEN exceeds VID+150 mV; prevents CPU damage during transient faults. |
| Selectable DAC encoding | Single resistor on VID12.5 selects VRM9 (50 kΩ), VRM10 (<3 V), or AMD Hammer (5 kΩ) VID tables - simplifies platform reuse. |
Applications
| Server CPU Power Delivery | Desktop Motherboard VRM |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon or EPYC processors with dynamic P-state scaling. IC Role / Device Role / Timing Role: Two-phase PWM controller managing parallel buck stages, performing real-time VID updates and per-phase current balancing. Use Value: Enables ±0.5% voltage accuracy across -40°C to +85°C ambient, critical for CPU stability during thermal cycling and load transients. |
Use Scenario: Delivering stable 1.0–1.5 V core power to Intel Core i5/i7 or AMD Ryzen CPUs on ATX motherboards. IC Role / Device Role / Timing Role: Primary VRM controller implementing VRM10-compliant droop and remote sensing for motherboard-level voltage regulation. Use Value: Eliminates external current-sense resistors via rDS(ON)/DCR hybrid sensing, reducing board area and thermal overhead. |
| Workstation GPU Core Supply | High-Performance Computing Node |
Use Scenario: Providing tightly regulated core voltage to high-TDP discrete GPUs (e.g., NVIDIA A100, AMD MI250X) in compute workstations. IC Role / Device Role / Timing Role: Dual-phase controller executing interleaved switching at 250 kHz to minimize output ripple and EMI. Use Value: Achieves 3× higher effective ripple frequency vs. single-phase, allowing smaller output capacitors and reduced output voltage ripple. |
Use Scenario: Powering multi-core ARM or x86 SoCs in edge AI inference servers requiring robust thermal management. IC Role / Device Role / Timing Role: Industrial-grade VRM controller with -40°C to +85°C qualification, supporting long-term reliability in uncooled rack environments. Use Value: Integrated thermal shutdown (160°C trip) and open-sense-line protection ensure fail-safe operation during sensor disconnection or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase VRM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6566CRZ | Same architecture but 0°C to +70°C rating; lacks VID12.5 pin flexibility - fixed VRM9-only DAC. | Suitable only for commercial-temperature desktop boards; not qualified for industrial or server thermal profiles. | Select ISL6566CRZ only if ambient operating range is strictly 0–70°C and AMD/VRM10 support is unnecessary. |
| RT8803AZSP | Three-phase capable, supports up to 1.2 MHz switching; uses different VID mapping and lacks integrated rDS(ON) sensing. | Requires external current-sense resistors for channel balance; targets higher-frequency, higher-density designs. | Choose RT8803AZSP when >2 phases or >500 kHz operation is needed, accepting added BOM cost and layout complexity. |
Compared with ISL6568IR, ISL6566CRZ offers identical functionality at lower temperature grade and reduced VID flexibility, while RT8803AZSP extends phase count and frequency but sacrifices integrated rDS(ON) sensing - making ISL6568IR optimal for cost-sensitive, thermally demanding dual-phase VRM implementations.
Availability
ISL6568IR is available at Aetrix Electronics and suitable for server CPU power delivery, desktop motherboard VRM design, and high-performance computing node development requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL6568IR 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 product support, documentation, and manufacturing continuity for the ISL6568IR.
The ISL6568IR belongs to Renesas' high-precision analog power management portfolio, engineered specifically for microprocessor core voltage regulation in server, workstation, and high-end desktop platforms with strict accuracy, thermal, and reliability requirements.
FAQ
What is the operating temperature range of the ISL6568IR?
The ISL6568IR is rated for -40°C to +85°C ambient operation, as confirmed in the official FN9187 Rev 5.00 datasheet under "Recommended Operating Conditions." This extended temperature range qualifies it for industrial and server-class applications where thermal margins exceed commercial-grade alternatives like the ISL6566CRZ. The ISL6568IR's thermal shutdown activates at +160°C junction temperature, providing robust protection within its specified envelope.
How does the ISL6568IR implement current sensing without external resistors?
The ISL6568IR uses two complementary methods: DCR sensing via ISUM/IREF/ICOMP pins for load-line droop and overcurrent protection, and rDS(ON) sensing via ISEN1/ISEN2 pins for per-phase current balancing. Each method leverages intrinsic MOSFET characteristics - inductor DCR and lower-FET on-resistance - eliminating the need for discrete current-sense resistors. This is explicitly detailed in the "Current Sampling" section (Page 11) and "Features" list of the ISL6568IR datasheet.
Which microprocessor voltage standards does the ISL6568IR support?
The ISL6568IR supports Intel VRM9.0, Intel VRM10.0, and AMD Hammer voltage identification standards through its 6-bit VID interface (VID0–VID4 + VID12.5). The VID12.5 pin configures DAC selection: 50 kΩ to +5V for VRM9, <3 V for VRM10, or 5 kΩ to +5V for AMD Hammer - as defined in Table 1 of the ISL6568IR datasheet. All three modes are fully supported by the ISL6568IR silicon.
Does the ISL6568IR support single-phase operation?
Yes, the ISL6568IR supports configurable 1- or 2-phase operation. Tying both BOOT2 and PHASE2 pins to +12V disables Phase 2, forcing single-phase mode - as documented in the "PWM Operation" section (Page 10) of the ISL6568IR datasheet. In this mode, all control logic and current sensing remain functional for the active phase, preserving accuracy and protection features.
What protection features are built into the ISL6568IR?
The ISL6568IR integrates multi-tiered overvoltage protection (clamping via lower-FET turn-on), undervoltage lockout (82% VID threshold), overcurrent protection (100 µA OCSET trip), open sense-line detection (VDIFF ±1 V threshold), and thermal shutdown (+160°C trip/+100°C recovery). These are all specified in the "Electrical Specifications" table (Pages 6–7) and "Protection Features" overview (Page 1) of the ISL6568IR datasheet.
ISL6568IR 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)
ISL6568IR FAQ
1.How can I place an order for ISL6568IR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6568IR 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 ISL6568IR reliable?
The price and inventory of ISL6568IR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6568IR is usually 5 days.
3.What payment methods are accepted for ISL6568IR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6568IR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6568IR?
ISL6568IR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6568IR 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 ISL6568IR?
For technical support, including ISL6568IR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6568IR requirements.
6.How does Aetrix verify that ISL6568IR is sourced from the original manufacturer or authorized distributors?
All ISL6568IR 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 ISL6568IR meets industry standards.
7.What is the process for return or replacement of ISL6568IR?
All ISL6568IR units undergo pre-shipment inspection (PSI). If there is an issue with ISL6568IR, 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 ISL6568IR part is unused and in its original packaging.
Return procedure for ISL6568IR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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