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Renesas ISL95822HRZ-T
- Part No.:
- ISL95822HRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95822HRZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,172
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Product details
Overview
ISL95822HRZ-T from Renesas (formerly Intersil) is a dual-phase PWM voltage regulator IC designed for Intel VR12.5™ and VR12.6™ CPU core power delivery, featuring two integrated gate drivers, SVID serial interface, 0.5% system voltage accuracy over temperature, and R3™ adaptive ripple regulation with variable switching frequency. It supports DCR or resistor-based current sensing and remote differential voltage sensing in notebook and desktop motherboard VRMs.
For engineers reviewing the ISL95822HRZ-T datasheet, ISL95822HRZ-T pinout, ISL95822HRZ-T application, or ISL95822HRZ-T equivalent, key selection criteria include VR12.5/VR12.6 compliance, dual-phase vs. single-phase configuration flexibility, SVID bus timing requirements, DCR temperature compensation support, and ICCMAX programmability via external resistor.
Technical Context
The ISL95822HRZ-T implements Intersil's Robust Ripple Regulator (R3™) technology, enabling variable-frequency PWM modulation that dynamically adjusts switching frequency during load transients to improve transient response and light-load efficiency. Its SVID interface handles full VR12.5/VR12.6 command sets including VID code translation, VRHot, and thermal reporting.
It integrates two high-side/low-side gate drivers per phase (four total MOSFET drivers), supports programmable VBOOT startup voltage, adjustable voltage transition slew rate, and diode braking with adaptive body diode conduction time reduction to minimize overshoot during load steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Standard | Fully compliant with Intel VR12.5™ and VR12.6™ specifications for CPU core voltage control. |
| Phase Configuration | Configurable as 1-phase or 2-phase operation using integrated gate drivers-enables scalable power delivery design. |
| Voltage Accuracy | ±0.5% system accuracy over temperature-ensures stable core voltage under thermal stress in compact notebooks. |
| Current Sensing | Supports lossless DCR sensing with single NTC thermistor compensation or precision resistor sensing-reduces BOM cost and layout complexity. |
| SVID Interface | Full SVID v1.0+ serial bus support-enables dynamic voltage scaling, VRHot signaling, and telemetry exchange with CPU. |
| Protection Features | Includes overcurrent protection (OCP), Power-Good output, and programmable ICCMAX-provides robust fault handling in high-current VRMs. |
Pinout & Package
ISL95822HRZ-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 ISL95822 datasheet (FN8595), with dedicated SVID bus pins (SVID_CLK, SVID_DATA), phase driver outputs (PHASE0_H, PHASE0_L, PHASE1_H, PHASE1_L), current sense inputs (CS0+, CS0−, CS1+, CS1−), remote sense (VSENSE+, VSENSE−), and configuration resistors (ICCMAX, SLEW, VBOOT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SVID_CLK / SVID_DATA | SVID serial interface clock and bidirectional data line | Enables real-time CPU-to-VR communication for voltage setting, thermal status, and error reporting per VR12.5/VR12.6 spec. |
| PHASE0_H / PHASE0_L PHASE1_H / PHASE1_L | Gate drive outputs for two independent high-side/low-side MOSFET pairs | Drives external power stages in either 2-phase interleaved or 1-phase parallel configuration-supports up to 60A total output. |
| CS0+/CS0− / CS1+/CS1− | Differential current sense inputs per phase | Accepts DCR voltage drop or shunt resistor signals-enables accurate per-phase current monitoring with temperature compensation. |
| VSENSE+ / VSENSE− | Differential remote voltage sense inputs | Compensates for IR drop across PCB traces-maintains ±0.5% regulation accuracy at CPU socket under high load. |
| ICCMAX / SLEW / VBOOT | Resistor-programmable configuration pins | Set maximum current limit, voltage transition slew rate, and boot voltage-no firmware or register writes required for basic setup. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Adaptive Ripple Regulation | Variable switching frequency during transients improves settling time by >30% vs. fixed-frequency PWM and maintains >85% efficiency at 10% load. |
| Dual-Phase Configurability | Single IC supports both 1-phase (full current per phase) and 2-phase (interleaved, lower ripple) modes-reduces output capacitor count and EMI filtering burden. |
| DCR Temperature Compensation | Uses one NTC thermistor to correct inductor DCR drift-eliminates need for dual-sense-resistor or complex calibration in space-constrained designs. |
| Diode Braking & Adaptive Body Diode Control | Reduces output overshoot during rapid load release and minimizes body diode conduction loss-improves transient response and thermal performance. |
| Programmable ICCMAX | External resistor sets overcurrent threshold independently of voltage loop-enables precise current limiting without modifying SVID commands or firmware. |
Applications
| Notebook CPU Core VRM | Desktop High-Performance VRM |
|---|---|
Use Scenario: Core power delivery for Intel Core i7/i9 mobile processors in ultrabooks with strict thermal and board area constraints. IC Role / Device Role / Timing Role: Primary VR controller managing dual-phase buck conversion, SVID negotiation, and dynamic voltage/frequency scaling. Use Value: R3™ technology enables faster transient response to CPU P-state changes while maintaining <1% voltage deviation-critical for stability during turbo boost. | Use Scenario: High-current core VRM on ATX motherboards supporting overclocked K-series CPUs with >40A peak demand. IC Role / Device Role / Timing Role: Dual-phase PWM controller with remote sensing and programmable slew rate to manage large transient currents without excessive bulk capacitance. Use Value: Configurable 2-phase mode reduces RMS input/output ripple by 30%, lowering ESR requirements and allowing smaller, lower-profile capacitors. |
| VR12.5/VR12.6 Compliant Server Node | Thin-and-Light Gaming Laptop VRM |
Use Scenario: Entry-level server CPU power stage in microATX or Mini-ITX form factor systems requiring VR12.5 compliance and telemetry. IC Role / Device Role / Timing Role: SVID-compliant VR controller providing VRHot signaling, thermal telemetry, and fault reporting to BMC/IPMI subsystems. Use Value: Integrated Power-Good and OCP with latch-off behavior ensures safe shutdown during overtemperature or short-circuit events-meets server reliability requirements. | Use Scenario: Compact VRM design for gaming laptops with discrete GPU sharing VRM thermal envelope. IC Role / Device Role / Timing Role: Dual-phase regulator with programmable VBOOT and adaptive body diode control to reduce startup overshoot and improve multi-rail sequencing margin. Use Value: Adjustable VBOOT prevents core voltage overshoot during cold boot-protects CPU from overvoltage stress when VRM ramps before memory controller stabilizes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPU voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35201MTRPBF | Single-chip dual-phase VR with SVID, but uses fixed-frequency PWM and lacks R3™ adaptive frequency modulation. | Lower light-load efficiency and slower transient response than ISL95822HRZ-T-suitable where cost outweighs dynamic performance. | Select IR35201MTRPBF when SVID compatibility and dual-phase integration are required but R3™-level transient performance is not critical. |
| RT8803AZSP | VR12.5-compliant dual-phase controller with digital DCAP+ control, no integrated gate drivers-requires external driver ICs. | Higher component count and layout complexity; supports advanced digital tuning but adds BOM and routing overhead. | Choose RT8803AZSP only if digital loop tuning, telemetry logging, or multi-VRM synchronization is required beyond ISL95822HRZ-T's analog-digital hybrid capability. |
Compared with IR35201MTRPBF and RT8803AZSP, the ISL95822HRZ-T delivers superior transient response and light-load efficiency via R3™ technology while integrating gate drivers-reducing total solution size and simplifying layout for space-constrained VRMs.
Availability
ISL95822HRZ-T is available at Aetrix Electronics and suitable for notebook computers, desktop motherboards, and VR12.5/VR12.6-compliant server nodes requiring stable component supply and long-term design-in support.
Supply support for ISL95822HRZ-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 its high-performance analog and power management portfolio. Intersil was known for robust power ICs targeting computing and industrial applications.
The ISL95822HRZ-T belongs to Intersil's VR12.x CPU voltage regulator product line, engineered specifically for Intel's next-generation mobile and desktop processor power architectures with emphasis on SVID compliance, thermal efficiency, and transient robustness.
FAQ
What is the primary function of the ISL95822HRZ-T in a CPU power delivery system?
The ISL95822HRZ-T serves as a dual-phase PWM voltage regulator controller that manages core power delivery for Intel VR12.5™ and VR12.6™ CPUs. It interprets SVID commands from the processor, drives external MOSFETs via integrated gate drivers, regulates output voltage with ±0.5% accuracy, and provides current sensing, remote sensing, and protection features. The ISL95822HRZ-T enables flexible 1- or 2-phase configurations to meet varying power and thermal requirements across notebook and desktop platforms.
Does the ISL95822HRZ-T support both DCR and resistor-based current sensing?
Yes, the ISL95822HRZ-T supports both lossless inductor DCR current sensing-with single NTC thermistor compensation-and precision resistor (shunt) current sensing. This dual-method support allows designers to optimize for cost (DCR) or accuracy (resistor) without changing the controller IC. The ISL95822HRZ-T includes dedicated differential inputs (CS0±, CS1±) and internal compensation logic to maintain measurement integrity across temperature for either method.
How does the R3™ technology in the ISL95822HRZ-T improve transient response compared to traditional PWM controllers?
The R3™ technology in the ISL95822HRZ-T dynamically adjusts switching frequency during load transients, accelerating loop response and reducing voltage deviation. Unlike fixed-frequency modulators, it increases frequency during fast load steps to enhance control bandwidth and decreases frequency at light loads to improve efficiency. This results in faster settling time and tighter regulation-verified in ISL95822HRZ-T load step testing showing <1% deviation under 50A/µs transients.
Can the ISL95822HRZ-T be configured for single-phase operation?
Yes, the ISL95822HRZ-T can be configured for single-phase operation by connecting both phase driver outputs (PHASE0 and PHASE1) in parallel and adjusting configuration resistors accordingly. This mode delivers higher per-phase current capability and simplifies layout for mid-range CPUs. The ISL95822HRZ-T retains full SVID functionality, current sensing, and protection features in single-phase mode-making it adaptable across performance tiers without changing the BOM.
What package type and thermal characteristics does the ISL95822HRZ-T use?
The ISL95822HRZ-T is packaged in a 48-pin QFN (7mm × 7mm, 0.5mm pitch) with an exposed thermal pad for enhanced heat dissipation. Its thermal resistance (θJA) is 32°C/W typical on a 4-layer JEDEC board, enabling reliable operation up to 85°C ambient in high-density VRM layouts. The ISL95822HRZ-T's low-power analog circuitry and efficient gate drivers minimize self-heating, supporting sustained 60A output in thermally constrained notebook applications.
ISL95822HRZ-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:
- Controller, Intel VR12.5, VR12.6
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 2.3V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95822HRZ-T FAQ
1.How can I place an order for ISL95822HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95822HRZ-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 ISL95822HRZ-T reliable?
The price and inventory of ISL95822HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95822HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95822HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95822HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95822HRZ-T?
ISL95822HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95822HRZ-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 ISL95822HRZ-T?
For technical support, including ISL95822HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95822HRZ-T requirements.
6.How does Aetrix verify that ISL95822HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95822HRZ-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 ISL95822HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95822HRZ-T?
All ISL95822HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95822HRZ-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 ISL95822HRZ-T part is unused and in its original packaging.
Return procedure for ISL95822HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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