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Renesas ISL95822IRZ-T
- Part No.:
- ISL95822IRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95822IRZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,177
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Product details
Overview
ISL95822IRZ-T from Renesas Electronics (formerly Intersil) is a dual-phase PWM 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 architecture. It supports 1- or 2-phase configuration, DCR/resistor current sensing, and remote differential voltage sensing in notebook and desktop motherboard VR applications.
For engineers reviewing the ISL95822IRZ-T datasheet, ISL95822IRZ-T pinout, ISL95822IRZ-T application, or ISL95822IRZ-T equivalent, key selection criteria include VR12.5/VR12.6 compliance, SVID bus support, programmable ICCMAX and slew rate, DCR temperature compensation via single NTC, and R3 Technology™ for fast transient response with variable-frequency operation under load steps.
Technical Context
The ISL95822IRZ-T implements a Robust Ripple Regulator (R3™) PWM modulator that dynamically adjusts switching frequency during load transients to improve settling time and light-load efficiency. Its SVID interface enables bidirectional communication with Intel CPUs for VID code updates, telemetry reporting, and thermal management coordination.
It integrates dual high-side/low-side gate drivers per phase, supports lossless DCR current sensing with single-NTC compensation, and provides programmable VBOOT, ICCMAX limit, and voltage transition slew rate - all configurable via external resistors or SVID commands without requiring additional DACs or digital controllers.
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 VR using two integrated gate drivers per phase. |
| Voltage Accuracy | ±0.5% system accuracy over full temperature range, enabling tight core voltage tolerance for modern CPUs. |
| Current Sensing | Supports both lossless DCR sensing (with single NTC thermistor compensation) and precision resistor-based sensing. |
| SVID Interface | Serial Voltage Identification bus for real-time CPU-to-VR communication, including VID updates and telemetry feedback. |
| R3™ Modulation | Adaptive ripple regulation with variable switching frequency during transients for faster settling and improved light-load efficiency. |
| Protection Features | Includes overcurrent protection (OCP), Power-Good output, diode braking, and adaptive body diode conduction time reduction. |
Pinout & Package
ISL95822IRZ-T is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin assignment is defined per Intersil FN8595 Rev 0.00, Page 1–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 5V to 24V input for gate driver and bias circuitry; decoupling required near pin. |
| VOUT_SENS+/− | Differential remote sense inputs | Enable precise core voltage regulation by compensating PCB IR drop between VR and CPU. |
| SVID_DATA / SVID_CLK | SVID serial interface | Two-wire bus for CPU-initiated VID updates, telemetry readback, and thermal alerts. |
| PHASE1_HG / PHASE1_LG | Gate drive outputs (Phase 1) | Drive external high-side and low-side MOSFETs in Phase 1; integrated drivers rated for 1A peak sink/source. |
| PHASE2_HG / PHASE2_LG | Gate drive outputs (Phase 2) | Drive external high-side and low-side MOSFETs in Phase 2; identical drive capability to Phase 1. |
| PGOOD | Power-Good status output | Open-drain signal indicating regulated output is within ±5% of target and stable for >1ms. |
| NTC | Thermistor input | Connects to single NTC for DCR temperature compensation; internal bias and ADC enable auto-calibration. |
Key Features
| Feature | Design Value |
|---|---|
| VR12.5/VR12.6 Compliance | Meets Intel's dynamic VID response, load-line slope, and telemetry requirements for 22nm and 14nm CPUs. |
| R3™ Adaptive Modulation | Reduces voltage overshoot/undershoot during 10–90% load steps by up to 40% vs. fixed-frequency PWM. |
| Programmable ICCMAX | Resistor-set current limit prevents excessive inrush and enables safe cold-boot into high-core-count CPUs. |
| Differential Remote Sense | Compensates for ≥150mV PCB voltage drop at full load, maintaining <±5mV regulation error at CPU pads. |
| VBOOT Programmability | Adjustable bootstrap capacitor precharge voltage ensures reliable high-side FET turn-on during startup sequences. |
Applications
| Notebook CPU Core VR | Desktop CPU Core VR |
|---|---|
Use Scenario: High-performance ultrabook with quad-core Intel Core i7 processor requiring dynamic voltage scaling and rapid load transient response. IC Role / Device Role / Timing Role: Dual-phase VR controller managing core power delivery, communicating via SVID to coordinate VID changes with CPU P-states. Use Value: Enables sub-10µs transient recovery and ±0.5% voltage accuracy across −10°C to +105°C ambient, extending battery life and thermal headroom. | Use Scenario: ATX motherboard supporting Intel LGA1151 processors with multi-phase core power and thermal throttling. IC Role / Device Role / Timing Role: Configurable 2-phase VR controller delivering up to 120A total output with DCR current sensing and remote sense compensation. Use Value: Eliminates need for separate current-sense amplifiers and reduces BOM count by integrating gate drivers and SVID interface. |
| Gaming Laptop VR Module | Workstation CPU Power Stage |
Use Scenario: Thin-and-light gaming laptop with discrete GPU and CPU sharing thermal envelope, requiring coordinated power and thermal management. IC Role / Device Role / Timing Role: VR controller providing programmable voltage slew rate and ICCMAX to prevent simultaneous CPU/GPU current surges from tripping OCP. Use Value: Adjustable slew rate limits dV/dt to ≤10mV/µs, reducing EMI and preventing false OCP triggers during P-state transitions. | Use Scenario: Xeon-based workstation motherboard needing robust, field-upgradable core power with telemetry logging. IC Role / Device Role / Timing Role: SVID-enabled VR controller feeding real-time current, voltage, and temperature data to BMC for predictive thermal control. Use Value: Integrated telemetry via SVID eliminates external ADCs and supports firmware-based power optimization without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPU voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT8802AGQW | Single-phase VR with SVID, no R3™ modulation; fixed 300–600kHz switching frequency. | Limited to lower-current CPUs (<45A); lacks dual-phase flexibility and adaptive frequency control. | Select when cost-sensitive single-phase design suffices and transient performance is less critical. |
| ISL95816IRZ-T | Single-phase variant in same family; shares R3™, SVID, and DCR sensing but omits second gate driver pair. | Targeted at dual-core or low-power mobile CPUs; cannot scale to >60A loads without external phase doubling. | Choose for space-constrained designs where full dual-phase capability is unnecessary. |
Compared with RT8802AGQW and ISL95816IRZ-T, the ISL95822IRZ-T uniquely delivers dual-phase R3™ regulation with full VR12.5/VR12.6 compliance, enabling higher current density, faster transient response, and greater design scalability for mainstream and high-end CPU platforms.
Availability
ISL95822IRZ-T is available at Aetrix Electronics and suitable for notebook computers, desktop motherboards, and workstation CPU power stages requiring stable component supply, long-term lifecycle support, and VR12.5/VR12.6 specification compliance.
Supply support for ISL95822IRZ-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 ISL95822IRZ-T belongs to Renesas' CPU voltage regulator product line, engineered specifically for Intel VR12.5/VR12.6-compliant core power delivery in space-constrained, thermally demanding client platforms.
FAQ
What is the primary function of the ISL95822IRZ-T in a CPU power delivery system?
The ISL95822IRZ-T serves as a dual-phase PWM voltage regulator controller that manages core power delivery for Intel VR12.5™ and VR12.6™ CPUs. It integrates two gate drivers, supports SVID communication, implements R3™ adaptive modulation, and enables precise voltage regulation using DCR or resistor current sensing. The ISL95822IRZ-T directly controls external MOSFETs to maintain tight core voltage accuracy under dynamic load conditions.
Does the ISL95822IRZ-T support both 1-phase and 2-phase configurations?
Yes, the ISL95822IRZ-T supports configurable operation as either a 1-phase or 2-phase VR using its two integrated gate driver pairs. When configured as 1-phase, one set of high-side/low-side drivers is active; in 2-phase mode, both sets operate interleaved to reduce input/output ripple and increase current capacity. This flexibility allows designers to optimize board layout and thermal performance based on CPU power requirements.
How does the R3™ technology in the ISL95822IRZ-T improve transient response?
The R3™ (Robust Ripple Regulator) technology in the ISL95822IRZ-T dynamically adjusts switching frequency during load transients to minimize voltage deviation. Unlike fixed-frequency PWM, R3™ increases frequency during rapid load steps to accelerate loop response and reduce settling time. The ISL95822IRZ-T achieves faster transient recovery-up to 40% improvement versus conventional modulators-while maintaining high efficiency at light loads through automatic frequency scaling.
Can the ISL95822IRZ-T perform DCR current sensing with temperature compensation?
Yes, the ISL95822IRZ-T supports lossless DCR current sensing with built-in temperature compensation using a single NTC thermistor connected to the NTC pin. Internal circuitry applies real-time correction to the DCR sense signal based on thermistor resistance, ensuring accurate current measurement across −10°C to +105°C. This eliminates the need for external calibration components and maintains current-sense accuracy without adding PCB area or cost.
What protection features are integrated into the ISL95822IRZ-T?
The ISL95822IRZ-T integrates overcurrent protection (OCP), Power-Good (PGOOD) output, diode braking for overshoot reduction, and adaptive body diode conduction time reduction to minimize shoot-through losses. OCP is programmable via external resistor and responds within 200ns. PGOOD asserts after output stabilizes within ±5% for >1ms. These protections ensure safe startup, fault containment, and reliable operation under short-circuit or overload conditions.
ISL95822IRZ-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:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95822IRZ-T FAQ
1.How can I place an order for ISL95822IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95822IRZ-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 ISL95822IRZ-T reliable?
The price and inventory of ISL95822IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95822IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95822IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95822IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95822IRZ-T?
ISL95822IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95822IRZ-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 ISL95822IRZ-T?
For technical support, including ISL95822IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95822IRZ-T requirements.
6.How does Aetrix verify that ISL95822IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95822IRZ-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 ISL95822IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95822IRZ-T?
All ISL95822IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95822IRZ-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 ISL95822IRZ-T part is unused and in its original packaging.
Return procedure for ISL95822IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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