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Renesas ISL95824HRZ-T
- Part No.:
- ISL95824HRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- -
- Datasheet:
-
ISL95824HRZ-T.pdf
- Description:
- IC CTRLR PWM VR12.5 52QFN
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Inventory:1,318
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Product details
Overview
ISL95824HRZ-T from Renesas (formerly Intersil) is a dual-output, multiphase PWM controller for Intel IMVP8™ desktop CPUs, supporting 4+2 phase configurations with integrated +12V gate drivers (three total), SVID-compliant serial interface, and R3™ modulator technology enabling diode emulation mode, phase shedding, and <0.5% system voltage accuracy over temperature.
For engineers reviewing the ISL95824HRZ-T datasheet, ISL95824HRZ-T pinout, ISL95824HRZ-T application, or ISL95824HRZ-T equivalent, key selection considerations include VR A/B phase configurability (4/3/2/1-phase and 2/1-phase), DCR/resistor current sensing support, differential remote sensing, programmable SVID address, and IMVP8™-specific power-good signaling and thermal compensation via single NTC.
Technical Context
The ISL95824HRZ-T implements two independent VR controllers sharing one SVID bus: VR A supports up to 4 phases with two integrated +12V gate drivers; VR B supports up to 2 phases with one +12V gate driver. Both outputs use R3™ modulator architecture enabling variable switching frequency, adaptive body diode conduction time reduction, and diode emulation in single-phase mode.
Current sensing is configurable per output-either lossless DCR sensing with single NTC-based temperature compensation or precision resistor-based sensing. Each VR features programmable IMAX, adjustable switching frequency, OC protection, and differential remote voltage sense, with a shared VR_READY signal indicating combined power-good status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Compliance | Intel IMVP8™ specification compliant for desktop CPU core (IA) and graphics (GT) rails |
| VR A Phases | Configurable 4-, 3-, 2-, or 1-phase operation with two integrated +12V gate drivers |
| VR B Phases | Configurable 2- or 1-phase operation with one integrated +12V gate driver |
| Voltage Accuracy | ±0.5% system accuracy over full operating temperature range |
| Modulator Type | Green Hybrid Digital R3™ with variable frequency, phase shedding, and diode emulation |
| Current Sensing | DCR sensing (with single NTC thermistor compensation) or precision resistor sensing |
| Interface | SMBus/PMBus/I²C-compatible SVID interface with conflict-free addressing |
Pinout & Package
ISL95824HRZ-T is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per the official ISL95824 datasheet Rev 0.00 (May 2015), including dedicated SVID lines (SVID_CLK, SVID_DATA), VR_A/VR_B gate drive outputs (GATA0–GATA3, GATB0–GATB1), sense inputs (VSEN_A/B, ISEN_A/B), and configuration pins (ADDR0–ADDR2, FREQ_SEL).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SVID_CLK / SVID_DATA | SVID serial interface clock/data | Two-wire bidirectional bus for CPU communication; enables dynamic VID updates and telemetry |
| GATA0–GATA3 | VR A high-side gate drivers | Four outputs supporting up to 4-phase VR A; GATA0–GATA1 are +12V drivers; GATA2–GATA3 require external drivers |
| GATB0–GATB1 | VR B high-side gate drivers | Two outputs supporting up to 2-phase VR B; GATB0 is +12V driver; GATB1 requires external driver |
| VSEN_A / VSEN_B | Differential remote sense inputs | Enable accurate load-point regulation by rejecting PCB IR drop; referenced to respective VR outputs |
| ISEN_A / ISEN_B | Current sense inputs | Accept DCR voltage or resistor-based current sense signals for OCP and phase control |
| VR_READY | Combined power-good indicator | Open-drain output asserting high when both VR A and VR B meet voltage and timing specifications |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Modulator Architecture | Delivers faster transient response and light-load efficiency via diode emulation and load-dependent frequency scaling |
| Programmable SVID Address | Three ADDR pins enable 8 unique addresses, allowing coexistence of multiple ISL95824HRZ-T controllers on same SVID bus |
| Adaptive Body Diode Conduction Control | Reduces shoot-through and conduction losses by dynamically adjusting dead-time based on load and temperature |
| Dual Independent VR Configuration | VR A and VR B operate with separate phase counts, IMAX limits, and frequency settings while sharing SVID bus and VR_READY |
| Thermal Compensation Support | Single NTC thermistor input enables accurate DCR resistance compensation across temperature for stable current sensing |
Applications
| Desktop CPU Core Power Delivery | Desktop GPU Graphics Rail |
|---|---|
Use Scenario: High-performance desktop motherboard delivering regulated voltage to Intel Core i5/i7/i9 processors under dynamic IA load conditions. IC Role / Device Role / Timing Role: Primary VR controller managing VR A (4-phase) for CPU core rail with SVID-driven VID updates and phase shedding during P-states. Use Value: Enables <0.5% voltage accuracy and fast transient response required by IMVP8™ spec, reducing need for bulk output capacitance. | Use Scenario: Dual-rail motherboard powering discrete or integrated GPU graphics engine (GT rail) alongside CPU core. IC Role / Device Role / Timing Role: Secondary VR controller managing VR B (2-phase) for GT rail, synchronized with VR A via shared SVID bus and VR_READY. Use Value: Eliminates second SVID controller IC, saving board area and BOM cost while maintaining independent phase control and protection. |
| IMVP8™-Compliant OEM Platforms | High-Efficiency Desktop VRM Designs |
Use Scenario: Tier-1 OEM desktop platform requiring full IMVP8™ compliance certification and long-term supply continuity. IC Role / Device Role / Timing Role: Dual-output controller implementing Intel-defined SVID protocol, VR sequencing, and telemetry reporting for validation and diagnostics. Use Value: Reduces qualification effort by providing pre-validated IMVP8™ behavior, including PS0/PS1/PS2 state transitions and thermal-aware current limiting. | Use Scenario: Enthusiast-grade desktop VRM targeting >90% peak efficiency at 50–80A loads with low acoustic noise. IC Role / Device Role / Timing Role: R3™ modulator enabling diode emulation in light-load single-phase mode and variable-frequency operation to minimize switching losses. Use Value: Achieves high light-load efficiency without external control circuitry, simplifying design and improving acoustic performance vs fixed-frequency controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output IMVP8™ VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95825HRZ-T | Same pinout and feature set; differs only in factory-programmed SVID address (0x20 vs 0x21) | Identical IMVP8™ functionality; used when multiple controllers required on same SVID bus | Select ISL95825HRZ-T only when address collision avoidance is needed in multi-controller systems |
| RT8802AGQW | Supports IMVP8™ but uses proprietary serial interface instead of SVID; no integrated gate drivers (requires external drivers) | Requires redesign of gate drive stage and firmware interface; lacks R3™ modulator benefits | Consider RT8802AGQW only if SVID compatibility is not required and external driver integration is acceptable |
Compared with ISL95824HRZ-T, ISL95825HRZ-T offers identical electrical and functional behavior with a different default SVID address, while RT8802AGQW sacrifices SVID compliance and integrated drivers for alternative control flexibility-making ISL95824HRZ-T the optimal choice for standard IMVP8™ desktop platforms requiring minimal BOM and layout complexity.
Availability
ISL95824HRZ-T is available at Aetrix Electronics and suitable for desktop CPU core power delivery, GPU graphics rail regulation, and IMVP8™-compliant OEM motherboard designs requiring stable component supply and long-term lifecycle support.
Supply support for ISL95824HRZ-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 Corporation acquired Intersil in 2017 and maintains its high-performance analog and power management portfolio for computing, industrial, and automotive markets.
The ISL95824HRZ-T belongs to Renesas' IMVP8™-optimized VR controller product line, designed specifically to simplify high-efficiency, dual-rail desktop CPU power delivery with integrated gate drivers and SVID compliance.
FAQ
What is the primary function of the ISL95824HRZ-T in a desktop motherboard?
The ISL95824HRZ-T serves as a dual-output, IMVP8™-compliant PWM controller managing both CPU core (VR A) and GPU graphics (VR B) voltage rails. It integrates three +12V gate drivers, supports DCR/resistor current sensing, and communicates with the processor via SVID to deliver precise, adaptive power delivery meeting Intel's desktop CPU specification requirements.
Does the ISL95824HRZ-T support both DCR and resistor-based current sensing?
Yes, the ISL95824HRZ-T supports both lossless inductor DCR current sensing-with built-in compensation using a single NTC thermistor-and precision resistor-based current sensing. This dual-sensing capability allows designers to optimize for cost (DCR) or accuracy (resistor), with independent configuration per VR output.
How many phases can each VR output support on the ISL95824HRZ-T?
VR A supports configurable 4-, 3-, 2-, or 1-phase operation using two integrated +12V gate drivers (GATA0/GATA1) and optional external drivers. VR B supports configurable 2- or 1-phase operation using one integrated +12V gate driver (GATB0). The ISL95824HRZ-T does not support more than four total phases across both outputs.
What is the role of the VR_READY signal on the ISL95824HRZ-T?
The VR_READY signal is a shared open-drain power-good indicator that asserts high only when both VR A and VR B meet their respective voltage accuracy, timing, and stability requirements. It synchronizes system boot sequencing and replaces the need for separate power-good signals from two discrete controllers, simplifying motherboard logic design.
Is the ISL95824HRZ-T pin-compatible with other Intersil/Renesas IMVP8™ controllers?
The ISL95824HRZ-T shares the same 48-pin QFN package and pinout with ISL95825HRZ-T, differing only in factory-programmed SVID address. It is not pin-compatible with ISL95816 or RT8802AGQW due to differences in gate driver count, SVID implementation, and pin assignment for configuration and sensing functions.
ISL95824HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Voltage - Input:
- -
- Number of Outputs:
- -
- Voltage - Output:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ISL95824HRZ-T FAQ
1.How can I place an order for ISL95824HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95824HRZ-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 ISL95824HRZ-T reliable?
The price and inventory of ISL95824HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95824HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95824HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95824HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95824HRZ-T?
ISL95824HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95824HRZ-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 ISL95824HRZ-T?
For technical support, including ISL95824HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95824HRZ-T requirements.
6.How does Aetrix verify that ISL95824HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95824HRZ-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 ISL95824HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95824HRZ-T?
All ISL95824HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95824HRZ-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 ISL95824HRZ-T part is unused and in its original packaging.
Return procedure for ISL95824HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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