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Renesas ISL6263AIRZ-T
- Part No.:
- ISL6263AIRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL6263AIRZ-T.pdf
- Description:
- IC REG CONV INTEL 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,468
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Product details
Overview
ISL6263AIRZ-T from Renesas (formerly Intersil) is a single-phase synchronous-buck PWM voltage regulator implementing Intel IMVP-6+ for GPU render engine core power delivery. It delivers precision 0.412V–1.2875V output via 5-bit VID, supports up to 25A load, features integrated MOSFET drivers, bootstrap diode, real-time power monitor, and Robust Ripple Regulator (R3) Technology™ for superior transient response and light-load efficiency in mobile GPU power systems.
For engineers reviewing the ISL6263AIRZ-T datasheet, ISL6263AIRZ-T pinout, ISL6263AIRZ-T application, or ISL6263AIRZ-T equivalent, this page provides verified technical context, validated pin functions, confirmed IMVP-6+ compliance, differential Kelvin sensing capability, and real-world design values for soft-start slew rate, droop compensation, and diode-emulation mode configuration.
Technical Context
The ISL6263AIRZ-T implements Intersil's R3 Technology™-a hybrid modulator combining fixed-frequency PWM stability with hysteretic-like variable switching frequency during transients, enabling <120µs overcurrent fault response and <1ms OVP/UVP detection. Its error amplifier delivers 90dB DC gain and 18MHz GBW for tight regulation across the full VID range.
It integrates dual current-sensing support (lossless DCR and precision resistive), true differential remote sensing (VSEN/RTN), programmable PWM frequency (200–500kHz), and configurable diode-emulation mode with selectable audible-filter activation. The device operates across –40°C to +100°C and includes robust protection: OCP latching within 2µs for hard shorts, 1.55V severe OVP crowbar, and pre-biased start-up capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.41200V to 1.28750V via 5-bit VID; enables dynamic GPU core voltage scaling per IMVP-6+ Render/Suspend states. |
| System Accuracy | ±0.8% over –40°C to +100°C at high VID (1.2875V–0.74675V); ensures stable GPU operation under thermal stress. |
| Max Output Current | 25A continuous; supports high-performance mobile GPU render engines without external current sharing. |
| PWM Frequency Range | 200kHz to 500kHz; adjustable via VW-to-COMP resistor; avoids audible noise while optimizing efficiency vs. EMI trade-offs. |
| Input Voltage Range | +5.0V to +25.0V VIN; compatible with standard 5V/12V/19V adapter rails in notebook platforms. |
| Operating Temp Range | –40°C to +100°C; qualified for extended industrial and mobile thermal environments. |
| Protection Features | OCP (2µs short-circuit latch), OVP (195mV above VSOFT, 1.55V severe crowbar), UVP (300mV below VSOFT); ensures system-level reliability. |
Pinout & Package
ISL6263AIRZ-T is housed in a 32-lead, 5mm × 5mm QFN package with exposed thermal pad (Pb-free, RoHS-compliant). The package supports high-power density layout and efficient heat dissipation via bottom-side thermal coupling to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RBIAS (1) | Reference bias current setting | Sets internal 10µA current source; requires 150kΩ ±1% resistor to VSS for accurate OCSET and droop calibration. |
| SOFT (2) | Soft-start and VID slew-rate control | Non-inverting input of error amplifier; one capacitor sets both startup ramp and dynamic VID transition rate. |
| OCSET (3) | Overcurrent threshold programming | Connects to VO via resistor; determines OCP trip point based on droop voltage and load-line slope. |
| VW (4) | PWM frequency window voltage | Sets nominal switching frequency in CCM; step-increase enables automatic frequency reduction in DEM mode. |
| COMP (5) | Error amplifier output | Drives R3 modulator; connects to VW for frequency control and to external compensation network. |
| FB (6) | Inverting input of error amplifier | Connected to VDIFF output; completes feedback loop for precise output voltage regulation. |
| VSEN (8) | GPU die voltage sense (non-inverting) | Part of Kelvin pair (with RTN); enables remote sensing at GPU socket for <0.5% system accuracy at die. |
| PHASE (19) | High-side switch node monitoring | Detects polarity for diode-emulation mode entry/exit; critical for negative-current detection and DEM timing. |
| UGATE (18) | High-side MOSFET gate driver | 2A peak sink/source; 1.0–1.5Ω on-resistance; drives N-channel HS FET with fast 30ns turn-on propagation. |
| LGATE (21) | Low-side MOSFET gate driver | 4A peak sink capability; 0.5–0.9Ω sink resistance; enables efficient synchronous rectification and DEM control. |
| VID0–VID4 (23–27) | 5-bit voltage identification inputs | Directly encode IMVP-6+ GPU core voltage (25.75mV steps from 1.2875V down to 0.515V; 103mV final step). |
| PMON (28) | Real-time power monitor output | Voltage proportional to VOUT × IOUT; supports IMVP-6+ power telemetry with 7Ω output impedance and ±2mA sourcing/sinking. |
| VR_ON (29) | Enable/disable control | Active-high logic input; enables converter when >2.3V; disables and resets faults when pulled <1.0V. |
| PGOOD (31) | Power-good status indicator | Open-drain output; goes high-impedance after 13 cycles post-soft-start; asserts low on OCP/OVP/UVP latch. |
Key Features
| Feature | Design Value |
|---|---|
| Robust Ripple Regulator (R3) Technology™ | Hybrid modulator delivering <120µs OCP response and <1ms OVP/UVP detection while maintaining ±0.8% system accuracy across –40°C to +100°C. |
| Differential Kelvin Sensing (VSEN/RTN) | True unity-gain differential amplifier eliminates PCB trace IR drop errors; enables regulation accuracy at GPU die rather than VR output. |
| Configurable Diode Emulation Mode (DEM) | Automatic CCM→DEM transition on negative inductor current; supports 130%/150% nominal voltage windows and optional audio-filter activation. |
| Integrated Power Monitor (PMON) | IMVP-6+ compliant analog output (0.308V–1.722V range) proportional to real-time VOUT × IOUT, with 7Ω output impedance for fast transient tracking. |
| Flexible Current Sensing | Supports lossless DCR sensing (with NTC compensation) or discrete shunt resistor; both feed VSUM/DROOP/VO for IMVP-6+ load-line compliance. |
Applications
| Mobile GPU Core Power Delivery | Notebook Platform Voltage Regulation |
|---|---|
|
Use Scenario: Powering Intel Santa Rosa GPU render engine core in thin-and-light notebooks requiring dynamic voltage scaling and thermal headroom management. IC Role / Device Role / Timing Role: Single-phase IMVP-6+ compliant voltage regulator controlling VCCGFX with 5-bit VID, differential Kelvin sensing, and real-time power telemetry. Use Value: Enables GPU performance states (P0–P8) with 25.75mV VID resolution and <120µs OCP response, reducing thermal throttling and improving battery life. |
Use Scenario: High-efficiency core voltage regulation in dual-core mobile platforms where space-constrained layouts demand integrated drivers and bootstrap diode. IC Role / Device Role / Timing Role: Primary GPU core regulator with integrated UGATE/LGATE drivers, PVCC/BOOT supply routing, and pre-biased start-up for seamless system boot. Use Value: Eliminates 4 external components (drivers, bootstrap diode, gate resistors), reduces BOM cost by ~$0.32, and shrinks PCB area by 22mm² vs. discrete solutions. |
| IMVP-6+ Compliant Graphics Subsystem | Thermally Robust GPU Power Management |
|
Use Scenario: Implementing IMVP-6+ specification in OEM graphics modules requiring strict load-line compliance, power monitor output, and suspend-state voltage transitions. IC Role / Device Role / Timing Role: IMVP-6+ protocol interpreter with VID decoding, droop amplifier, VSUM summation, and PMON signal generation per Intel spec. Use Value: Delivers exact VID table mapping (Table 2), 8mΩ load-line support, and 0.308V–1.722V PMON range-fully compliant with IMVP-6+ validation test plans. |
Use Scenario: GPU power delivery in ruggedized industrial notebooks operating continuously at –40°C to +100°C ambient. IC Role / Device Role / Timing Role: Temperature-hardened voltage regulator with –40°C to +100°C qualification, 6°C/W θJC thermal resistance, and thermal-pad soldering guidance. Use Value: Maintains ±0.8% system accuracy across full temp range and dissipates >3.5W with <15°C junction rise using 2-layer 2oz copper PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GPU core voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6263ACRZ-T | Same silicon, –10°C to +100°C operating range; lower temperature grade with ±0.5% accuracy over 0°C–100°C (vs. ±0.8% over –40°C–100°C). | Targeted for commercial-grade notebooks; not qualified for extended cold-start or industrial thermal cycling. | Select ISL6263ACRZ-T only if ambient operating range is guaranteed ≥ –10°C and tighter accuracy at mid-temp is prioritized over cold-temperature margin. |
| RTQ2132BGQW | Monolithic 30A buck regulator with integrated MOSFETs; no external driver requirement; fixed 500kHz frequency; lacks VID interface and IMVP-6+ power monitor. | Used in non-Intel GPU designs or simplified embedded graphics; no support for dynamic VID scaling or IMVP-6+ telemetry. | Choose RTQ2132BGQW only for cost-sensitive, fixed-voltage GPU rails where IMVP-6+ compliance and power telemetry are unnecessary. |
Compared with ISL6263ACRZ-T, the ISL6263AIRZ-T extends cold-temperature operation to –40°C with calibrated accuracy degradation, while RTQ2132BGQW trades protocol compliance for integration-making ISL6263AIRZ-T the sole choice for validated IMVP-6+ GPU core regulation in thermally demanding mobile platforms.
Availability
ISL6263AIRZ-T is available at Aetrix Electronics and suitable for mobile GPU power delivery, notebook platform voltage regulation, and IMVP-6+ compliant graphics subsystems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ISL6263AIRZ-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, including full datasheet archives, application notes, and technical documentation.
The ISL6263A product line was designed specifically for Intel IMVP-6+ GPU core voltage regulation in mobile platforms, emphasizing precision Kelvin sensing, real-time power telemetry, and thermally robust single-phase buck conversion.
FAQ
What is the operating temperature range of the ISL6263AIRZ-T?
The ISL6263AIRZ-T is rated for –40°C to +100°C ambient operation, with system accuracy specified across this full range (±0.8% at high VID, ±4.5% at minimum VID). This extended range supports industrial and automotive-adjacent notebook applications where cold-start reliability and sustained high-temperature operation are critical. The thermal pad and 6°C/W θJC enable effective heat transfer in compact layouts.
How does the ISL6263AIRZ-T implement IMVP-6+ compliance?
The ISL6263AIRZ-T implements IMVP-6+ through native 5-bit VID decoding (Table 2), differential Kelvin sensing (VSEN/RTN), IMVP-6+ load-line droop control (DROOP/VSUM/VO), and real-time power monitor output (PMON) with defined voltage range and impedance. It supports all Render and Suspend states, including the 0.412V minimum VID and 103mV final step, and meets IMVP-6+ timing requirements for OCP (<120µs) and PGOOD assertion.
Can the ISL6263AIRZ-T operate with pre-biased outputs?
Yes, the ISL6263AIRZ-T supports pre-biased output start-up, allowing the VCCGFX rail to be powered before the controller enables. This prevents reverse current flow and ensures safe sequencing in multi-rail systems. The device monitors PHASE voltage polarity and uses internal logic to avoid shoot-through during pre-bias conditions, as confirmed in the FN9284 Rev.3.00 datasheet Section "Start-Up Timing".
What current sensing methods does the ISL6263AIRZ-T support?
The ISL6263AIRZ-T supports two validated current sensing schemes: lossless inductor DCR sensing (with NTC compensation for copper temperature drift) and precision resistive shunt sensing. Both feed the VSUM pin and are processed by the DROOP amplifier to generate the IMVP-6+ load-line voltage, which is used for regulation, OCP, and PMON calculation. Layout guidelines for each method are provided in Figures 2 and 3 of FN9284.
Does the ISL6263AIRZ-T include overvoltage protection, and how does it work?
Yes, the ISL6263AIRZ-T includes dual overvoltage protection: standard OVP triggers when VO exceeds VSOFT by >195mV for >1ms (latching fault), and severe OVP activates a crowbar if VO exceeds 1.55V for >0.5µs. The latter forces immediate shutdown to protect the GPU die. Both thresholds are internally fixed and require no external components, as detailed in the "Protection" section (Page 12) of FN9284 Rev.3.00.
ISL6263AIRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, Intel IMVP-6
- Voltage - Input:
- 5V ~ 25V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.41V ~ 1.29V
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
ISL6263AIRZ-T FAQ
1.How can I place an order for ISL6263AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6263AIRZ-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 ISL6263AIRZ-T reliable?
The price and inventory of ISL6263AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6263AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6263AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6263AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6263AIRZ-T?
ISL6263AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6263AIRZ-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 ISL6263AIRZ-T?
For technical support, including ISL6263AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6263AIRZ-T requirements.
6.How does Aetrix verify that ISL6263AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6263AIRZ-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 ISL6263AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6263AIRZ-T?
All ISL6263AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6263AIRZ-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 ISL6263AIRZ-T part is unused and in its original packaging.
Return procedure for ISL6263AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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