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Renesas ISL6563IRZ-T
- Part No.:
- ISL6563IRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
ISL6563IRZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,885
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Product details
Overview
ISL6563IRZ-T from Renesas (formerly Intersil) is a two-phase multiphase buck PWM controller with integrated high- and low-side 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 across –40°C to +85°C. Its rDS(ON)-based current sensing enables automatic channel current balancing in high-current CPU core power supplies.
For engineers reviewing the ISL6563IRZ-T datasheet, ISL6563IRZ-T pinout, ISL6563IRZ-T application, or ISL6563IRZ-T equivalent, this page provides verified technical context, validated pin functions, confirmed VID compatibility modes, real droop programming behavior, and authoritative alternative part comparisons - all grounded in the FN9126 Rev 8.00 datasheet and official package documentation.
Technical Context
The ISL6563IRZ-T implements interleaved two-phase buck control using dual independent PWM comparators driven by out-of-phase sawtooth waveforms, achieving an effective ripple frequency of 444 kHz at 222 kHz per phase. Its internal error amplifier features 96 dB DC gain and 20 MHz gain-bandwidth product, enabling fast transient response with stable loop compensation via FB/COMP network.
Current sensing is performed via time-multiplexed sampling of lower MOSFET rDS(ON) voltage across PHASE1/PHASE2 pins, scaled through an external ISEN resistor to generate both channel-balance correction and load-line droop. Overcurrent protection triggers at 95 µA sensed current, with hiccup-mode recovery after 4096-cycle shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Two-phase interleaved synchronous buck PWM controller with integrated gate drivers |
| Operating Temp Range | –40°C to +85°C - qualified for industrial-grade CPU core power applications |
| System Accuracy | ±1% over temperature - ensures tight output voltage regulation under thermal stress |
| Switching Frequency | 189–255 kHz per phase - programmable via oscillator ramp; enables optimized efficiency vs. size trade-off |
| VID Compatibility | Intel VRM9, VRM10, and AMD Hammer - selectable via DACSEL/VID5 and VRM10 pins |
| Overcurrent Threshold | 95 µA reference - sets precise per-channel current limit without external sense resistors |
| Droop Programming | Resistor-programmable via ISEN - implements load-line regulation to reduce voltage overshoot/undershoot |
Pinout & Package
ISL6563IRZ-T is housed in a 24-lead QFN package (4 mm × 4 mm, 0.5 mm pitch), JEDEC MO-220 compliant, with exposed thermal pad for enhanced thermal performance. The package supports Pb-free (RoHS-compliant) reflow profiles up to 260°C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (8) | Bias supply input | 5 V ±5% supply for small-signal circuitry; requires local 0.1 µF ceramic decoupling |
| PVCC (16) | Power gate drive supply | 5 V supply for high-current MOSFET drivers; requires local 1 µF ceramic decoupling |
| VID0–VID4 (1,2,22–24) | Microprocessor voltage ID inputs | TTL-compatible inputs decoded into DAC reference; internally pulled up to ~1.2 V |
| DACSEL/VID5 (3) | DAC standard selection | GND = AMD Hammer; open/high = Intel VRM9; VRM10 pin determines VRM10 mode |
| ENLL (21) | Enable input | Logic-low threshold ≈0.61 V; pulling below disables controller operation |
| FB (6) / COMP (5) | Error amplifier inverting input / output | FB receives current feedback for droop; COMP drives external compensation network |
| ISEN (7) | Current sense scaling input | Sets overcurrent trip level and droop slope via resistor to VCC; enables rDS(ON) sensing |
| UGATE1/2 (12,19) | Upper MOSFET gate drivers | High-side drivers with 0.5 Ω typical source/sink resistance; include shoot-through prevention |
| LGATE1/2 (15,17) | Lower MOSFET gate drivers | Low-side drivers with 0.5 Ω typical source/sink resistance; referenced to PGND |
| PHASE1/2 (13,18) | Half-bridge phase node inputs | Return path for upper gate drives; used for rDS(ON) current sampling during conduction |
| BOOT1/2 (11,20) | Bootstrap bias inputs | Drive floating high-side gates; require external bootstrap capacitors tied to PVCC |
| OFS (9) | Output voltage offset control | Open = no offset; connect to GND or VCC via resistor to program ±mV offset |
| SSEND (10) | Soft-start end indicator | Open-drain output active low during soft-start; goes high-impedance when complete |
| GND (25) / PGND (14) | Signal / power ground | GND references analog circuitry; PGND references LGATE drivers and current sensing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated two-phase control | Eliminates need for external phase synchronization logic; reduces BOM count and layout complexity |
| rDS(ON) current sensing | Enables lossless, per-channel current monitoring without discrete sense resistors - lowers cost and board space |
| Programmable droop | Single-resistor configuration establishes precise load-line slope to maintain stability during dynamic load steps |
| Multi-tier overvoltage protection | Clamps output by turning on lower MOSFETs when FB exceeds VID + 200 mV; includes disabled-state threshold |
| Start-up into pre-charged output | Supports hot-plug and rail sequencing requirements without latch-up or fault triggering |
Applications
| Desktop CPU Core Power | Laptop CPU Voltage Regulator |
|---|---|
|
Use Scenario: Regulating core voltage for dual-core Intel Pentium 4 or AMD Athlon 64 processors requiring dynamic VID changes and tight ±1% tolerance. IC Role / Device Role / Timing Role: Two-phase buck controller managing parallel power stages, executing VID code interpretation, droop-based load-line regulation, and interleaved PWM timing. Use Value: Enables 30 A+ output with reduced output capacitance and lower thermal density versus single-phase solutions. |
Use Scenario: Providing adaptive core voltage to mobile AMD Turion or Intel Core Duo CPUs with thermal throttling and battery-life optimization. IC Role / Device Role / Timing Role: Multiphase controller implementing VRM10 dynamic VID transitions, fast transient recovery, and phase shedding during low-power states. Use Value: Achieves sub-200 µs VID step response and <1% voltage deviation during 10 A/µs load transients. |
| Server Processor VRM | Embedded x86 Computing Platform |
|
Use Scenario: Delivering stable 1.1–1.8 V core power to multi-socket Xeon or Opteron systems with strict PSRR and ripple requirements. IC Role / Device Role / Timing Role: Precision two-phase controller performing rDS(ON)-based current balancing, overcurrent hiccup protection, and OVP clamping during fault conditions. Use Value: Guarantees channel current mismatch <±3% across full load range, improving thermal margin and reliability. |
Use Scenario: Powering fanless industrial PCs or COM Express modules where compact size, low EMI, and wide temperature operation are critical. IC Role / Device Role / Timing Role: Industrial-grade buck controller operating from –40°C to +85°C, supporting VRM9/VRM10/AMD VID standards and robust start-up sequencing. Use Value: Delivers 92% peak efficiency at 20 A with minimal input/output capacitor count due to 444 kHz effective ripple frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6564CRZ-T | Same architecture but commercial-temp (0°C to +70°C); identical pinout and VID support | Not rated for industrial ambient; unsuitable for extended temperature deployments | Select ISL6564CRZ-T only for cost-sensitive desktop or lab environments with controlled thermal conditions. |
| RT8802AGQW | Three-phase controller with integrated MOSFET drivers; different VID mapping and droop implementation | Requires PCB redesign for third phase; supports newer VRM11/IMVP7 but lacks Hammer compatibility | Choose RT8802AGQW when scaling beyond 40 A or migrating to IMVP7-compliant platforms. |
Compared with ISL6563IRZ-T, ISL6564CRZ-T offers identical functionality at lower temperature grade, while RT8802AGQW extends phase count and protocol support at the cost of pinout and firmware compatibility - making ISL6563IRZ-T optimal for proven industrial two-phase CPU VRMs.
Availability
ISL6563IRZ-T is available at Aetrix Electronics and suitable for desktop CPU core power, server VRM designs, embedded x86 computing platforms, and laptop processor voltage regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL6563IRZ-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
Renesas Electronics acquired Intersil in 2017 and maintains full support for legacy Intersil power management ICs. Renesas is a global semiconductor leader focused on embedded solutions, analog, and power products.
The ISL6563IRZ-T belongs to Intersil's high-performance multiphase buck controller product line, engineered specifically for precision microprocessor core voltage regulation in desktop, server, and mobile computing platforms.
FAQ
What is the operating temperature range of the ISL6563IRZ-T?
The ISL6563IRZ-T is rated for –40°C to +85°C ambient operation, qualifying it for industrial-grade applications including server motherboards and ruggedized embedded systems. This extended range distinguishes it from the commercial-grade ISL6563CRZ-T (0°C to +70°C) and ensures reliable startup and regulation across harsh thermal environments. All electrical specifications in the FN9126 datasheet are validated within this range.
How does the ISL6563IRZ-T implement current balancing between phases?
The ISL6563IRZ-T performs automatic channel current balancing using rDS(ON) sensing on the lower MOSFETs of each phase. It samples the voltage across PHASE1 and PHASE2 during conduction, time-multiplexes the signals through the ISEN pin, and compares each channel's current to the average. The resulting error adjusts individual PWM duty cycles in real time - achieving <±3% current mismatch across full load without external components.
Can the ISL6563IRZ-T support dynamic VID changes during operation?
Yes, the ISL6563IRZ-T supports dynamic VID changes: in VRM9/AMD Hammer modes, it detects new codes after 12 stable switching cycles and ramps the output in 4-cycle steps; in VRM10 mode, it responds immediately upon validated code change. For example, a 1.5 V → 1.7 V transition takes ~196 µs at 222 kHz, as confirmed in Figure 5 of FN9126. This capability is essential for CPU frequency scaling and power-state transitions.
What package type and footprint does the ISL6563IRZ-T use?
The ISL6563IRZ-T uses a 24-lead QFN package measuring 4 mm × 4 mm with 0.5 mm lead pitch (JEDEC MO-220 compliant). It features an exposed thermal pad on the underside for efficient heat dissipation and supports Pb-free reflow profiles. The L24.4x4B package drawing is documented in the ordering information table of FN9126, and the pinout matches ISL6563CRZ-T and ISL6563IRZ variants exactly.
Does the ISL6563IRZ-T require external current sense resistors?
No, the ISL6563IRZ-T eliminates external current sense resistors by using rDS(ON) sensing on the lower MOSFETs. It samples the voltage drop across PHASE1 and PHASE2, scales it via the ISEN pin resistor, and feeds the resulting current into the FB node for droop generation and channel balancing. This approach reduces power loss, board area, and BOM cost while maintaining ±1% system accuracy - a key design advantage confirmed in the "Current Sensing" section of FN9126.
ISL6563IRZ-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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
ISL6563IRZ-T FAQ
1.How can I place an order for ISL6563IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6563IRZ-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 ISL6563IRZ-T reliable?
The price and inventory of ISL6563IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6563IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6563IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6563IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6563IRZ-T?
ISL6563IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6563IRZ-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 ISL6563IRZ-T?
For technical support, including ISL6563IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6563IRZ-T requirements.
6.How does Aetrix verify that ISL6563IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6563IRZ-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 ISL6563IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6563IRZ-T?
All ISL6563IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6563IRZ-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 ISL6563IRZ-T part is unused and in its original packaging.
Return procedure for ISL6563IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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