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Renesas ISL6266HRZ-T
- Part No.:
- ISL6266HRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6266HRZ-T.pdf
- Description:
- IC REG CONV INTEL 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,531
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Product details
Overview
ISL6266HRZ-T from Intersil is a two-phase buck core voltage regulator implementing Intel IMVP-6+ protocol with integrated 2A gate drivers, supporting 0.300V–1.500V output via 7-bit VID, ±0.5% system accuracy over temperature, and dynamic phase shedding for Intel Pentium/Core mobile processors in notebook platforms.
For engineers reviewing the ISL6266HRZ-T datasheet, ISL6266HRZ-T pinout, ISL6266HRZ-T application, or ISL6266HRZ-T equivalent, this page delivers verified technical context, confirmed pin functions, real-world load-line behavior, thermal monitoring capability, and validated alternatives for IMVP-6+ compliant CPU power delivery designs.
Technical Context
The ISL6266HRZ-T implements a fixed-frequency PWM modulator (410–470 kHz nominal) with dual-channel interleaved operation, differential remote sensing (VDIFF/VSEN/RTN), and lossless DCR or resistive current sensing. It supports IMVP-6+ load-line regulation via droop amplifier feedback and uses a unity-gain differential amplifier for die-referenced voltage control.
It features dynamic phase management: two-phase CCM at heavy load, single-phase CCM when PSI# is asserted, and diode-emulation mode during deeper sleep (DPRSLPVR/DPRSTP# active). Overvoltage protection triggers at +235 mV above setpoint, and thermal shutdown activates at V(NTC) < 1.18 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.300V to 1.500V in 12.5mV steps; digitally set by 7-bit VID input per IMVP-6+ specification. |
| System Accuracy | ±0.5% over -10°C to +100°C ambient; ensures stable core voltage regulation across full VID range and thermal envelope. |
| Switching Frequency | 410–470 kHz nominal (two-phase); enables optimized EMI filtering and ceramic-capacitor-based output design. |
| Gate Drive Capability | 2A source/sink per UGATE/LGATE; drives high-side and low-side MOSFETs directly without external buffers. |
| Current Sensing | Supports both lossless inductor DCR sensing and precision resistive sensing; VSUM summation node enables accurate total current measurement. |
| Protection Features | Overvoltage (+235 mV trip), undervoltage (-360 mV trip), overcurrent (via OCSET/DROOP), thermal shutdown (NTC-based), and PGOOD monitoring. |
| Power Monitor Output | PMON analog output proportional to VSEN × (DROOP − VO); enables real-time CPU power estimation via external ADC. |
Pinout & Package
ISL6266HRZ-T is housed in a 48-lead 7×7 mm QFN package with exposed thermal pad (PKG DWG L48.7x7). Pin functions are validated per FN6398 Rev 4.00 datasheet, Page 7–8.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID6 | Digital voltage identification input | 7-bit LSB-to-MSB interface setting core output voltage per IMVP-6+ VID table; supports on-the-fly changes. |
| VSEN / RTN | Remote CPU die voltage sense pair | Enables precision differential measurement at processor die; critical for meeting IMVP-6+ ±0.5% accuracy requirement. |
| UGATE1 / LGATE1 / PHASE1 / BOOT1 / PGND1 | Phase 1 gate drive interface | Drives high-side and low-side MOSFETs of first buck channel; BOOT1 supplies floating gate voltage for UGATE1. |
| UGATE2 / LGATE2 / PHASE2 / BOOT2 / PGND2 | Phase 2 gate drive interface | Drives second buck channel; interleaving reduces output ripple frequency by 2× and eases filter design. |
| PSI# / DPRSTP# / DPRSLPVR | Processor state signaling inputs | Enable dynamic phase dropping (PSI#), deeper-sleep entry (DPRSLPVR), and slow wake-up coordination (DPRSTP#). |
| PMON / VR_TT# / PGOOD | Analog/digital system monitoring outputs | PMON reports instantaneous CPU power; VR_TT# signals thermal overload; PGOOD confirms regulated output stability. |
Key Features
| Feature | Design Value |
|---|---|
| Two-phase IMVP-6+ core controller | Meets Intel mobile voltage positioning spec for Pentium/Core processors; includes VID decoding, load-line droop, and PSI# coordination. |
| Differential remote sensing (VDIFF/VSEN/RTN) | Compensates PCB IR drop to regulate voltage precisely at CPU die-required for ±0.5% system accuracy compliance. |
| Dynamic phase add/drop with CCM/DCM modes | Reduces switching losses at light load: two-phase CCM → one-phase CCM → diode emulation during deeper sleep. |
| Integrated 2A gate drivers | Eliminates need for external driver ICs; supports fast UGATE/LGATE rise/fall times (<8 ns) and robust MOSFET turn-on. |
| CPU power monitor (PMON) | Analog output scales with VSEN × (DROOP − VO); enables firmware-based power budgeting and thermal throttling decisions. |
| Thermal monitoring with NTC bias | RBIAS sets internal 60 µA NTC current source; VR_TT# open-drain output asserts below 1.18 V at NTC pin for overtemperature shutdown. |
Applications
| Mobile CPU Core Power Delivery | Intel Montevina Platform Regulation |
|---|---|
|
Use Scenario: Notebook motherboard supplying core voltage to Intel Pentium/Core 2 Duo processors under dynamic load conditions. IC Role / Device Role / Timing Role: Two-phase buck controller executing IMVP-6+ protocol, managing VID updates, PSI#-driven phase shedding, and load-line droop. Use Value: Enables >90% efficiency at 35A load (VIN = 12.6V), ±0.5% output accuracy, and <35 ns load transient response per Figure 14–15. |
Use Scenario: Reference design for Intel Montevina chipset-compliant laptops requiring IMVP-6+ compliance and coupled-inductor support. IC Role / Device Role / Timing Role: Primary core regulator with integrated gate drivers, DCR current sensing, and CLK_EN# synchronization to system clock enable. Use Value: Reduces BOM count by eliminating discrete drivers; supports all-ceramic output with coupled inductors per Figure 31. |
| Thermally Adaptive Mobile Power System | Multi-mode CPU Power Management |
|
Use Scenario: Thermal-aware notebook platform using NTC network to compensate DCR drift and prevent thermal runaway. IC Role / Device Role / Timing Role: Thermal monitor with 60 µA NTC bias current and VR_TT# open-drain output tied to system PMIC or EC. Use Value: Maintains safe junction temperature (<125°C) via automatic shutdown when V(NTC) falls below 1.18 V-validated in Figure 6–7. |
Use Scenario: Power-optimized ultraportable design leveraging DPRSLPVR, DPRSTP#, and PSI# to minimize quiescent current. IC Role / Device Role / Timing Role: State-aware regulator transitioning between 2-CCM, 1-CCM, and diode-emulation modes based on CPU sleep states. Use Value: Extends battery life via deeper-sleep entry (C4) with 41 µA SOFT capacitor charging rate-confirmed in Figure 20 and 22. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase IMVP-6+ core regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6266AIRZ-T | Uses R3 Technology™ modulator with faster transient response; 280–320 kHz nominal switching frequency vs. 410–470 kHz; -40°C to +100°C temp range. | Optimized for newer Intel platforms requiring tighter transient performance; supports same VID table and pinout but different frequency tuning (VW resistor value). | Select ISL6266AIRZ-T for designs needing improved load-step response or extended industrial temperature operation. |
| RT8802CGQW | Realtek two-phase IMVP-6+ controller; 300–600 kHz adjustable frequency; supports 0.3–1.5V output; ±0.5% accuracy; no integrated gate drivers (requires external drivers). | Requires external 2A gate drivers and additional compensation components; lacks PMON and VR_TT# outputs; uses different VID timing and state signaling. | Choose RT8802CGQW only if gate driver integration is unnecessary and cost-driven BOM reduction outweighs layout complexity. |
Compared with ISL6266HRZ-T, the ISL6266AIRZ-T offers superior transient response via R3 modulator but lower nominal frequency, while RT8802CGQW sacrifices integration for flexibility-neither is pin-compatible, and both require PCB layout changes and firmware validation.
Availability
ISL6266HRZ-T is available at Aetrix Electronics and suitable for mobile computing, Intel Montevina platform designs, and thermally adaptive CPU power systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL6266HRZ-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 Corporation (now part of Renesas Electronics) is a fabless semiconductor company specializing in precision analog and power management ICs for computing, industrial, and communications markets.
The ISL6266 product line was designed specifically for Intel IMVP-6+ compliant mobile CPU core power delivery, emphasizing high accuracy, thermal resilience, and seamless integration with Pentium/Core processor sleep-state protocols.
FAQ
What is the operating temperature range for the ISL6266HRZ-T?
The ISL6266HRZ-T is rated for -10°C to +100°C ambient operation, as specified in the Ordering Information table on page 3 of FN6398 Rev 4.00. Its junction temperature must remain within -40°C to +125°C under recommended operating conditions. This range aligns with standard notebook CPU VR requirements and supports reliable operation in compact thermal envelopes.
Does the ISL6266HRZ-T support both DCR and resistive current sensing?
Yes, the ISL6266HRZ-T supports both lossless inductor DCR current sensing and precision resistive current sensing, as confirmed in the Features section (page 2) and Figures 31–33 of FN6398 Rev 4.00. The VSUM pin sums channel currents for droop generation and overcurrent protection, and a single NTC network compensates DCR temperature drift.
How does the ISL6266HRZ-T implement IMVP-6+ load-line regulation?
The ISL6266HRZ-T implements IMVP-6+ load-line regulation using its internal droop amplifier: the DROOP pin voltage equals VO plus a current-proportional offset derived from VSUM. This creates a programmable negative load line (VOUT decreases with increasing IOUT), matching Intel's required slope-verified in Figure 3 and Figure 5 of the datasheet.
What is the function of the PMON pin on the ISL6266HRZ-T?
The PMON pin on the ISL6266HRZ-T provides an analog output proportional to the product of VSEN and the droop voltage (DROOP − VO), enabling real-time CPU power estimation. As shown in Electrical Specifications (page 5), PMON ranges from 0.308V to 1.722V depending on VSEN and load, and can source/sink up to 2 mA for direct ADC interfacing.
Is the ISL6266HRZ-T pin-compatible with the ISL6266AIRZ-T?
No, the ISL6266HRZ-T and ISL6266AIRZ-T share identical pinout and package (48-lead 7×7 QFN), but they are not functionally interchangeable without design review. The ISL6266AIRZ-T uses R3 Technology™ with different frequency behavior, transient response, and thermal thresholds-requiring validation of VW resistor, OCSET network, and firmware timing.
ISL6266HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 48-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:
- 0.3V ~ 1.5V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
ISL6266HRZ-T FAQ
1.How can I place an order for ISL6266HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6266HRZ-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 ISL6266HRZ-T reliable?
The price and inventory of ISL6266HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6266HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6266HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6266HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6266HRZ-T?
ISL6266HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6266HRZ-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 ISL6266HRZ-T?
For technical support, including ISL6266HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6266HRZ-T requirements.
6.How does Aetrix verify that ISL6266HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6266HRZ-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 ISL6266HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6266HRZ-T?
All ISL6266HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6266HRZ-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 ISL6266HRZ-T part is unused and in its original packaging.
Return procedure for ISL6266HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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