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Renesas ISL6563CR-T
- Part No.:
- ISL6563CR-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
ISL6563CR-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 24QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL6563CR-T from Intersil is a two-phase multiphase buck PWM controller with integrated MOSFET drivers, designed for precision voltage regulation of advanced microprocessors. It supports Intel VRM9/VRM10 and AMD Hammer VID protocols, delivers ±1% system accuracy over temperature, and operates at 189–255 kHz per phase. Its rDS(ON)-based current sensing enables automatic channel current balancing in high-current CPU power delivery applications.
For engineers reviewing the ISL6563CR-T datasheet, ISL6563CR-T pinout, ISL6563CR-T application, or ISL6563CR-T equivalent, this page provides verified technical context, validated pin functions, confirmed VID protocol compatibility, real-world droop programming method, and two rigorously cross-checked alternative controllers for microprocessor VRM designs.
Technical Context
The ISL6563CR-T implements interleaved two-phase PWM control using an internal oscillator (189–255 kHz) and dual independent gate drivers with non-overlap timing (8 ns UGATE/LGATE turn-on delay). It integrates a 6-bit VID DAC with selectable Intel VRM9, VRM10, or AMD Hammer encoding, and uses time-multiplexed rDS(ON) sampling across PHASE1/PHASE2 to feed ISEN for current balancing and droop generation.
Its protection architecture includes multi-tiered overvoltage detection (VID + 200 mV trip, 100 mV hysteresis), programmable overcurrent threshold (95 µA reference), and hiccup-mode recovery (4096-cycle wait + soft-start retry). The controller supports start-up into pre-charged outputs and features dedicated ENLL enable (0.61 V threshold) and SSEND soft-start end indicator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Two-phase interleaved synchronous buck PWM controller with integrated high- and low-side MOSFET drivers |
| VID Compatibility | Programmable support for Intel VRM9 (5-bit), VRM10 (6-bit), and AMD Hammer (5-bit) DAC codes via DACSEL/VID5 and VRM10 pins |
| System Accuracy | ±1% over temperature (0°C to +70°C), enabling tight regulation for modern microprocessor core voltages |
| Switching Frequency | 189–255 kHz per phase (TJ = +25°C to +85°C); enables optimized trade-off between efficiency, ripple, and component size |
| Current Sensing | rDS(ON)-based lossless sensing with time-multiplexed ISEN input; eliminates external sense resistors and supports automatic channel balancing |
| Overcurrent Threshold | 95 µA internal reference; triggers hiccup-mode shutdown if both channels exceed threshold simultaneously or one channel exceeds it for 7 consecutive cycles |
| Droop Programming | Resistor-programmable output voltage droop (load-line regulation) via ISEN resistor; improves transient response and enables accurate current sharing |
Pinout & Package
ISL6563CR-T is housed in a 24-lead QFN package (4 mm × 4 mm, JEDEC MO-220 compliant) with exposed thermal pad. The package supports high-density PCB layouts and improved thermal performance versus SOIC alternatives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID4 (Pins 2,1,24–22) | Microprocessor voltage identification inputs | Accept TTL-level logic to set output voltage per VRM9/VRM10/Hammer tables; internally pulled up to ~1.2 V |
| DACSEL/VID5 (Pin 3) | VID standard selection or 6th-bit input | Ground for AMD Hammer mode; open/high for VRM9; used as VID5 when VRM10 pin grounded |
| VRM10 (Pin 4) | VRM10 compliance enable | Grounded to activate VRM10 6-bit decoding; open for VRM9/Hammer selection via DACSEL |
| ENLL (Pin 21) | Enable/disable control | Logic-low (<0.61 V) disables all PWM outputs and drivers; precise threshold enables clean sequencing |
| ISEN (Pin 7) | Current-sense feedback node | Connects to resistor that converts rDS(ON) voltage into current for droop, balancing, and OCP |
| FB (Pin 6) / COMP (Pin 5) | Error amplifier inverting input / output | FB receives current-summed feedback (voltage + droop current); COMP drives external compensation network |
| UGATE1/2 (Pins 19,12) | Upper MOSFET gate drive outputs | High-current source/sink drivers (0.5 Ω typ. RDS(ON)) with 8 ns non-overlap timing to prevent shoot-through |
| LGATE1/2 (Pins 17,15) | Lower MOSFET gate drive outputs | Source/sink drivers referenced to PGND; 4 ns fall time enables fast freewheeling control |
| PHASE1/2 (Pins 18,13) | Half-bridge switch node inputs | Sample lower MOSFET rDS(ON) during conduction; enable cycle-by-cycle current sensing without added components |
| OFS (Pin 9) | Output voltage offset programming | Open for no offset; connect ROFS to GND for positive offset or R′OFS to VCC for negative offset |
| SSEND (Pin 10) | Soft-start end indicator | Open-drain output pulled low during soft-start; goes high-impedance at completion - usable for sequencing or status monitoring |
| VCC (Pin 8) / PVCC (Pin 16) | Bias / power MOSFET driver supplies | VCC powers analog/digital circuitry (5 V ±5%); PVCC powers gate drivers (5 V ±5%), decoupled separately |
| GND (Pin 25) / PGND (Pin 14) | Analog ground / power ground | GND references small-signal circuitry; PGND references LGATE drivers - separation reduces noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Integrated two-phase PWM control | Eliminates need for external phase synchronization circuitry; reduces BOM count and layout complexity in CPU VRMs |
| rDS(ON) current sensing | Removes discrete current-sense resistors, lowering cost, board area, and power loss while maintaining ±1% channel balance accuracy |
| Programmable droop voltage | Single-resistor configuration of load-line regulation ensures stable transient response and prevents overshoot/undershoot during load steps |
| Multi-tiered overvoltage protection | Clamps output by turning on lower MOSFETs when FB rises >VID+200 mV; includes disabled-state OVP (1.65/1.95 V) for safety during startup |
| Dynamic VID support | Enables on-the-fly voltage changes: VRM9/Hammer modes use 12-cycle validation + 4-cycle step ramp; VRM10 allows immediate transition per processor command |
Applications
| Server CPU Power Delivery | Laptop Processor VRM |
|---|---|
Use Scenario: Dual-phase 12 V or 5 V input conversion for x86 server CPUs requiring >60 A output with tight voltage tolerance. IC Role / Device Role / Timing Role: Primary PWM controller managing interleaved switching, VID decoding, droop-based load-line regulation, and per-phase current balancing. Use Value: Enables high-efficiency, low-ripple power delivery with reduced output capacitance and thermal spreading across two phases. |
Use Scenario: Compact, low-profile VRM for mobile Intel Core or AMD Ryzen processors in space-constrained laptop motherboards. IC Role / Device Role / Timing Role: Two-phase buck controller with integrated drivers, supporting dynamic VID transitions and pre-charged output startup. Use Value: Reduces solution footprint vs. single-phase controllers while meeting strict transient response and ±1% accuracy requirements. |
| Workstation GPU Core Supply | Embedded High-Performance SoC |
Use Scenario: Core voltage regulation for discrete GPUs in professional workstations where thermal density and transient load steps exceed single-phase capability. IC Role / Device Role / Timing Role: Multiphase controller implementing rDS(ON) sensing, overcurrent hiccup protection, and programmable OVP thresholds. Use Value: Delivers robust protection and precise current sharing across parallel power stages under heavy, rapidly varying loads. |
Use Scenario: Power management for FPGA-based or ASIC-based embedded systems requiring configurable VID and long-term supply stability. IC Role / Device Role / Timing Role: Programmable VRM controller supporting multiple VID standards, soft-start sequencing, and SSEND status signaling. Use Value: Simplifies firmware integration and enables reuse across platforms with different microprocessor families (Intel/AMD). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6566CRZ-T | Three-phase version with identical VID support, same 24-pin QFN package, but adds third phase control and extended frequency range (200–300 kHz) | Required for >90 A CPU/GPU loads where three-phase interleaving improves ripple and thermal distribution | Select ISL6566CRZ-T only when scaling beyond two-phase current capacity; pinout differs for PHASE3/UGATE3/LGATE3 signals |
| RT8802CGQW | Two-phase controller with VRM10/VRM11 support, integrated MOSFET drivers, but uses external current-sense resistors (not rDS(ON)) and lacks SSEND indicator | Suitable for cost-sensitive designs where discrete sensing is acceptable and soft-start status monitoring is not required | Choose RT8802CGQW for simplified design validation where rDS(ON) sensing complexity is undesirable; verify OCP threshold alignment with system needs |
Compared with ISL6563CR-T, the ISL6566CRZ-T extends phase count and frequency range for higher-current systems, while the RT8802CGQW trades rDS(ON) sensing for simpler current measurement - both require layout changes and do not offer drop-in replacement capability.
Availability
ISL6563CR-T is available at Aetrix Electronics and suitable for server CPU power delivery, laptop processor VRMs, and workstation GPU core supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6563CR-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 ISL6563CR-T belongs to Intersil's VRM controller product line, engineered specifically for precision, multi-phase voltage regulation of advanced microprocessors with dynamic VID, droop control, and integrated gate drivers.
FAQ
What is the operating temperature range for the ISL6563CR-T?
The ISL6563CR-T is specified for commercial operation from 0°C to +70°C ambient temperature. This range aligns with its ISL6563CRZ ordering variant and is validated per the Absolute Maximum Ratings and Recommended Operating Conditions in FN9126 Rev 8.00. Thermal resistance (θJA = 43°C/W) assumes mounting on a high-thermal-conductivity test board; actual board design impacts junction temperature margin.
How does the ISL6563CR-T implement droop voltage regulation?
The ISL6563CR-T implements droop regulation by injecting average channel current - derived from rDS(ON) sensing and scaled through the ISEN resistor - directly into the FB pin. This creates a voltage drop across the external feedback resistor R1 proportional to load current, resulting in a controlled output voltage decrease under load. Equation 4 in the datasheet (IFB = rDS(ON) × IPHASE / RISEN) defines the current injected for droop generation in the ISL6563CR-T.
Does the ISL6563CR-T support dynamic VID changes during operation?
Yes, the ISL6563CR-T supports dynamic VID changes. In VRM9 and AMD Hammer modes, it validates new VID codes over 12 switching cycles and ramps the output in 4-cycle steps to avoid transients. In VRM10 mode, it responds immediately upon 3-cycle validation - enabling processor-directed voltage transitions. The ISL6563CR-T datasheet confirms this behavior on pages 11–12, including timing examples for 1.5 V → 1.7 V transitions.
What is the purpose of the SSEND pin on the ISL6563CR-T?
The SSEND pin on the ISL6563CR-T is an open-drain soft-start end indicator. It remains actively pulled low during the soft-start interval and transitions to high-impedance (open) when soft-start completes. This signal can be used to enable downstream circuitry, trigger sequencing events, or monitor controller readiness - providing deterministic timing without requiring external timers or voltage monitors in the ISL6563CR-T design.
Can the ISL6563CR-T operate with a 12 V input supply?
Yes, the ISL6563CR-T supports both 5 V and 12 V input conversion as stated in the datasheet headline and "Features" section. Its gate drivers (UGATE/LGATE) and bootstrap circuitry (BOOT1/BOOT2) are designed to handle the higher voltage stress of 12 V input topologies. The recommended operating condition specifies VCC and PVCC at 5 V ±5%, but the power stage - driven by external MOSFETs - is rated for 12 V input operation per the typical application diagram on page 3 of FN9126.
ISL6563CR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VRM9, VRM10, AMD Hammer Applications
- Voltage - Input:
- 5V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.8V ~ 1.85V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
ISL6563CR-T FAQ
1.How can I place an order for ISL6563CR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6563CR-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 ISL6563CR-T reliable?
The price and inventory of ISL6563CR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6563CR-T is usually 5 days.
3.What payment methods are accepted for ISL6563CR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6563CR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6563CR-T?
ISL6563CR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6563CR-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 ISL6563CR-T?
For technical support, including ISL6563CR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6563CR-T requirements.
6.How does Aetrix verify that ISL6563CR-T is sourced from the original manufacturer or authorized distributors?
All ISL6563CR-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 ISL6563CR-T meets industry standards.
7.What is the process for return or replacement of ISL6563CR-T?
All ISL6563CR-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6563CR-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 ISL6563CR-T part is unused and in its original packaging.
Return procedure for ISL6563CR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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