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Renesas ISL6264CRZ
- Part No.:
- ISL6264CRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6264CRZ.pdf
- Description:
- IC REG CTRL TWO-PHASE 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,192
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Product details
Overview
ISL6264CRZ from Renesas (formerly Intersil) is a two-phase buck core controller with integrated 2A gate drivers, designed specifically for AMD Mobile Turion CPUs. It delivers up to 50A output current, supports 0.375V–1.55V VID-adjustable core voltage with ±0.5% system accuracy over temperature, and implements R3 Technology™ for ultra-fast transient response. It enables dynamic phase adding/dropping via PSI_L control in mobile CPU power delivery systems.
For engineers reviewing the ISL6264CRZ datasheet, ISL6264CRZ pinout, ISL6264CRZ application, or ISL6264CRZ equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (2-phase CCM / 1-phase diode emulation), real-world efficiency curves, and precise alternative selection guidance for AMD-compatible CPU VR designs.
Technical Context
The ISL6264CRZ employs R3 Technology™-a proprietary Robust Ripple Regulator modulator that synthesizes noise-free inductor ripple analogs for hysteretic PWM timing, enabling faster load transients than fixed-frequency PWM while maintaining 0.5% voltage regulation accuracy. Its dual-channel interleaved architecture operates at 200–500kHz (adjustable via VW pin), doubling effective ripple frequency to reduce output capacitor count and board area.
It integrates differential remote sensing (VSEN/RTN), DCR or resistor-based current sensing with NTC thermal compensation, and a dedicated droop amplifier (DROOP/DFB) for precise load-line implementation per AMD specifications. Phase management is fully automatic: two-phase CCM at heavy load, single-phase diode emulation (DE) under PSI_L assertion, and seamless mode transitions without voltage overshoot or undershoot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.375V–1.55V via 6-bit VID input; supports full AMD Mobile Turion voltage table with 12.5mV/25mV steps |
| System Accuracy | ±0.5% over –10°C to +100°C ambient in active mode (VID = 0.75V–1.55V); critical for CPU VDD tolerance compliance |
| Switching Frequency | 200–500kHz adjustable (typ. 300kHz at RFSET = 6.81kΩ); higher frequency reduces inductor size, lower frequency improves light-load efficiency |
| Gate Drive Capability | 2A source/sink per UGATE/LGATE; supports high-side/lower MOSFETs like IRF7821/IRF7832 with <8ns rise/fall times |
| Operating Temperature | –10°C to +100°C ambient; junction rated to +125°C; qualified for mobile platform thermal envelopes |
| Protection Features | Overvoltage (155–235mV trip), severe OV (1.775–1.825V), undervoltage (–300 to –200mV), overcurrent with DROOP-based sensing |
| Package | 40-lead QFN (6mm × 6mm, 0.5mm pitch); exposed thermal pad for θJC = 4°C/W; RoHS-compliant e3 matte tin finish |
Pinout & Package
ISL6264CRZ is housed in a 40-lead, 6mm × 6mm QFN package with exposed thermal pad (PKG DWG L40.6x6). Pin functions are validated per FN6359 Rev 3.00 datasheet, with all 40 pins assigned specific circuit roles and design meanings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID5 | 6-bit digital voltage identification input | LSB-to-MSB interface to AMD CPU; sets core voltage per VID table (e.g., [000000] = 1.55V, [111111] = 0.375V) |
| PSI_L | Deep-sleep mode enable input | Logic-low assertion triggers automatic transition from 2-phase CCM to 1-phase diode emulation for battery life extension |
| VR_ON | Controller enable signal | 3.3V logic-high enables full operation; internal POR requires VDD > 4.35V before activation |
| UGATE1/UGATE2 | Upper MOSFET gate drive outputs | 2A peak source/sink; drives high-side FET gates with <30ns propagation delay and <8ns edge rates |
| LGATE1/LGATE2 | Lower MOSFET gate drive outputs | 2A peak source/sink (LGATE sink: 4A); supports synchronous rectification with fast turn-off for DCM efficiency |
| VSEN/RTN | Differential remote sense inputs | Connects directly to CPU die pads; enables accurate regulation at point-of-load per AMD spec |
| ISEN1/ISEN2 | Per-phase current sense inputs | Supports lossless DCR sensing or precision shunt resistors; enables static/dynamic current sharing between phases |
| OFS/SOFT/OCSET/RBIAS/VW | Configuration and calibration terminals | OFS sets DC offset; SOFT controls VID slew rate; OCSET sets overcurrent threshold; RBIAS sets 10µA reference; VW sets switching frequency |
Key Features
| Feature | Design Value |
|---|---|
| R3 Technology™ modulator | Combines hysteretic speed and PWM accuracy: variable-frequency response to load transients ensures <10µs recovery with no external compensation |
| Dynamic phase management | Automatic 2-phase ↔ 1-phase DE transition via PSI_L; maintains regulation during mode change without output disturbance |
| Differential remote sensing | VSEN/RTN inputs reject PCB trace IR drop; achieves ±0.5% core voltage accuracy at CPU die across temperature and load |
| Thermally compensated DCR sensing | Single NTC network compensates copper winding resistance drift; preserves load-line accuracy over –10°C to +100°C |
| Integrated protection suite | Programmable OV/UV/OC thresholds with hysteresis; PGOOD open-drain output with 7.6ms delay ensures reliable power sequencing |
| Audio filter disable (SET pin) | Logic-high on SET disables sub-20kHz switching; eliminates audible noise in thin-client and notebook platforms |
Applications
| AMD Mobile Turion Notebook Power | Embedded x86 CPU Core Regulation |
|---|---|
Use Scenario: Power delivery for AMD Turion 64 X2 and later mobile CPUs in ultraportable notebooks with thermal constraints and battery-life targets. IC Role / Device Role / Timing Role: Two-phase core controller managing up to 50A load with dynamic phase shedding and VID tracking synchronized to CPU state changes. Use Value: Enables 90%+ efficiency at 20A (12.6V input) and <100mV load transient deviation-meeting AMD's VDD tolerance and thermal specs. |
Use Scenario: High-efficiency core voltage regulation in ruggedized industrial PCs using AMD G-Series or Embedded APU platforms. IC Role / Device Role / Timing Role: Primary VR controller implementing AMD-compliant load line, remote sensing, and PSI_L–driven low-power states. Use Value: Maintains ±0.5% voltage accuracy across –10°C to +100°C ambient, supporting fanless operation and extended temperature qualification. |
| Mobile Thin Client VRM | Low-Power x86 Tablet Platform |
Use Scenario: Compact, low-noise CPU power solution for enterprise thin clients where EMI and acoustic noise are critical. IC Role / Device Role / Timing Role: Dual-phase controller with audio filter disable (SET pin) and 200–500kHz programmable frequency to avoid sensitive bands. Use Value: Eliminates audible coil whine while delivering 40A peak current with <1% output ripple-enabling silent fanless designs. |
Use Scenario: Battery-optimized core regulation in convertible tablets requiring deep-sleep efficiency and rapid wake-up response. IC Role / Device Role / Timing Role: PSI_L–managed controller transitioning to 1-phase diode emulation at light load (<2A) to maximize battery runtime. Use Value: Achieves >85% efficiency at 0.5A (1.1V output, 8V input), extending standby time by >30% versus fixed two-phase operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase CPU core controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6268CRZ | Same R3 Technology™, but supports Intel IMVP-6/6.5 protocols; lacks AMD-specific PSI_L logic and VID table mapping | Designed for Intel Core 2 Duo mobile CPUs-not compatible with AMD Turion VID encoding or sleep signaling | Select only for Intel-platform designs; not a functional replacement for ISL6264CRZ in AMD systems |
| RT8802AGQW | Two-phase controller with 0.3–1.5V output, ±0.5% accuracy, but uses standard PWM (not R3); no integrated DCR thermal compensation | Targets generic mobile SoC applications; requires external NTC circuitry for load-line stability across temperature | Use when cost sensitivity outweighs need for AMD-optimized features; verify VID timing and PSI_L compatibility separately |
Compared with ISL6264CRZ, ISL6268CRZ requires VID re-mapping and lacks native PSI_L support, while RT8802AGQW trades R3's transient speed for broader vendor flexibility but adds design complexity for thermal compensation.
Availability
ISL6264CRZ is available at Aetrix Electronics and suitable for AMD mobile CPU power delivery, embedded x86 platform VRMs, and low-noise thin client applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6264CRZ 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 the ISL6264CRZ. Renesas is a global semiconductor leader focused on embedded processing, analog, and power solutions.
The ISL6264CRZ belongs to Intersil's legacy CPU core controller product line, engineered specifically for AMD Mobile Turion processors to deliver high-efficiency, low-noise, thermally robust power delivery with minimal external components.
FAQ
What is the maximum supported output current for the ISL6264CRZ?
The ISL6264CRZ is rated for up to 50A total output current in two-phase operation, as validated in typical performance curves (Figures 4–7) with 0.36µH inductors and ceramic/SP capacitor banks. Each phase handles up to 25A continuous, with current sharing balanced to within 1mV ISEN mismatch. Peak capability depends on MOSFET selection, layout, and thermal design-Renesas recommends IRF7821/IRF7832 pairs for full 50A operation.
Does the ISL6264CRZ support both DCR and resistor-based current sensing?
Yes, the ISL6264CRZ supports both methods: DCR sensing via ISEN1/ISEN2 pins with NTC thermal compensation network (Figure 2), and precision shunt resistor sensing (Figure 3). The internal droop amplifier (DROOP/DFB) accepts summed current signals at VSUM, and the RBIAS pin sets the 10µA reference for consistent OC threshold scaling regardless of sensing method.
How does the PSI_L signal affect ISL6264CRZ operation?
When PSI_L is asserted low, the ISL6264CRZ automatically disables one phase and enters single-phase diode emulation (DE) mode to maximize light-load efficiency. This transition is seamless-no output voltage disturbance occurs-and is fully reversible upon PSI_L return to high. The controller remains in 2-phase CCM during startup regardless of PSI_L state, ensuring robust initialization.
What is the purpose of the R3 Technology™ used in the ISL6264CRZ?
R3 Technology™ is Intersil's patented Robust Ripple Regulator modulator. It synthesizes clean analogs of inductor ripple current and applies hysteretic comparison to achieve variable switching frequency during transients-delivering faster response than fixed-frequency PWM while retaining 0.5% DC accuracy. This eliminates need for external loop compensation and ensures stability across all load and input conditions.
Can the ISL6264CRZ be used with non-AMD CPUs?
The ISL6264CRZ is specifically architected for AMD Mobile Turion CPUs: its VID table matches AMD's 6-bit encoding (Table 1), PSI_L logic aligns with AMD's deeper sleep protocol, and remote sensing tolerances meet AMD die-spec requirements. While basic buck functionality may operate with other processors, VID decoding, mode transitions, and load-line behavior are not guaranteed outside AMD platforms.
ISL6264CRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, AMD Mobile Turion™
- Voltage - Input:
- 5V ~ 24V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.38V ~ 1.55V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL6264CRZ FAQ
1.How can I place an order for ISL6264CRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6264CRZ 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 ISL6264CRZ reliable?
The price and inventory of ISL6264CRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6264CRZ is usually 5 days.
3.What payment methods are accepted for ISL6264CRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6264CRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6264CRZ?
ISL6264CRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6264CRZ 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 ISL6264CRZ?
For technical support, including ISL6264CRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6264CRZ requirements.
6.How does Aetrix verify that ISL6264CRZ is sourced from the original manufacturer or authorized distributors?
All ISL6264CRZ 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 ISL6264CRZ meets industry standards.
7.What is the process for return or replacement of ISL6264CRZ?
All ISL6264CRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6264CRZ, 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 ISL6264CRZ part is unused and in its original packaging.
Return procedure for ISL6264CRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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