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Renesas ISL95833IRTZ-T
- Part No.:
- ISL95833IRTZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95833IRTZ-T.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,689
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Product details
Overview
ISL95833IRTZ-T from Renesas (formerly Intersil) is a dual 2+1-phase PWM controller IC for IMVP-7/VR12-compliant CPU and GPU core power supplies. It integrates two gate drivers, supports DCR/resistor current sensing, delivers 0.5% system voltage accuracy over temperature, and uses R3 modulator technology for fast transient response and adaptive light-load efficiency. It is used in high-performance laptop/desktop VRMs.
For engineers reviewing the ISL95833IRTZ-T datasheet, ISL95833IRTZ-T pinout, ISL95833IRTZ-T application, or ISL95833IRTZ-T equivalent, key selection considerations include phase configurability (2-phase or 1-phase for VR1), shared serial bus interface with CPU/GPU, R3 modulator behavior under load transients, VBOOT programmability, and dual independent Power-Good signals.
Technical Context
The ISL95833IRTZ-T implements two independent VR control loops: VR1 (configurable 2- or 1-phase, integrated driver) for VCORE, and VR2 (fixed 1-phase, integrated driver) for Graphics. Both use the Robust Ripple Regulator R3™ modulator, enabling variable switching frequency during transients and automatic frequency scaling at light load.
It communicates with the processor via a serial control bus (SVID-compatible), supports differential remote sensing on both outputs, and allows resistor-programmable IMAX, switching frequency, and VBOOT startup voltage. Current sensing options include lossless DCR with single NTC thermistor compensation or precision shunt resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Architecture | Dual-output IMVP-7/VR12-compliant PWM with R3 modulator for each VR |
| Phase Configuration | VR1: configurable 2-phase or 1-phase; VR2: fixed 1-phase |
| Voltage Accuracy | ±0.5% over temperature - ensures tight load-line compliance for CPU/GPU core rails |
| Current Sensing | DCR-based (with NTC compensation) or precision resistor - enables accurate, low-loss current monitoring |
| Serial Interface | SVID-compatible bus - enables dynamic voltage/frequency scaling and telemetry with Intel processors |
| Protection Features | Adjustable overcurrent, thermal warning, separate PG signals per VR - supports robust multi-rail power sequencing |
Pinout & Package
ISL95833IRTZ-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 ISL95833 datasheet (FN7837 Rev 2.00).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Input voltage supply pins | Accept 5V–24V input for respective VR channels; support independent input sourcing |
| PHASE1, PHASE2 | Gate drive outputs | Drive high-side MOSFETs for VR1 phases; enable 2-phase interleaving or 1-phase operation |
| PHASE3 | Gate drive output | Drives high-side MOSFET for VR2 (Graphics); operates independently of VR1 timing |
| SVID_DATA, SVID_CLK | Serial bus interface | Enable bidirectional communication with CPU for VID code updates, telemetry, and fault reporting |
| PGOOD1, PGOOD2 | Power-good status outputs | Open-drain signals indicating stable regulation for VR1 and VR2 - used for system power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| R3 Modulator Technology | Enables variable-frequency operation during load steps - reduces output voltage deviation by >40% vs. fixed-frequency controllers |
| Dual Independent Remote Sensing | Compensates for PCB IR drop on both VCORE and Graphics rails - maintains ±0.5% regulation at point-of-load |
| Programmable VBOOT Voltage | Configurable startup gate voltage - prevents shoot-through during initial turn-on of high-side FETs |
| Adaptive Body Diode Conduction Reduction | Minimizes reverse conduction time in synchronous rectifiers - improves efficiency by up to 1.2% at 10A load |
| Resistor-Programmable IMAX & fSW | Allows tuning of current limit threshold and switching frequency per VR - supports optimization for thermal, EMI, and efficiency trade-offs |
Applications
| Laptop CPU Core VRM | Desktop Graphics VRM |
|---|---|
Use Scenario: High-performance ultrabook requiring dynamic voltage scaling and tight load-line regulation for Intel Core i7/i9 processors. IC Role / Device Role / Timing Role: Primary PWM controller managing 2-phase VCORE rail with SVID interface and R3 transient response. Use Value: Enables sub-100ns load-step recovery and ±0.5% voltage accuracy across -10°C to +105°C ambient. | Use Scenario: Discrete GPU power delivery in compact gaming desktops with thermal constraints. IC Role / Device Role / Timing Role: Dedicated 1-phase PWM controller for GPU core rail, sharing serial bus with CPU controller to reduce component count. Use Value: Eliminates need for second SVID master; maintains independent PG and current-sense calibration for graphics rail. |
| IMVP-7 Server Node PSU | VR12-Compatible Workstation |
Use Scenario: Dual-socket server motherboard requiring coordinated VCORE regulation with telemetry and fault logging. IC Role / Device Role / Timing Role: VR1 controller implementing IMVP-7 protocol with thermal-aware DCR current sensing and NTC compensation. Use Value: Supports real-time current reporting and adaptive overcurrent protection based on die temperature feedback. | Use Scenario: Professional workstation running CAD/ML workloads with aggressive power-state transitions. IC Role / Device Role / Timing Role: Dual-rail controller delivering VR12-compliant VCORE and Graphics rails with synchronized SVID updates. Use Value: Achieves <50mV undershoot during 10A/µs load steps while maintaining independent rail sequencing and fault isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95838IRTZ-T | Single 3+1-phase configuration (not dual 2+1); higher phase count per VR; no VR2 independence | Targeted at higher-current CPU-only designs without discrete GPU rail requirements | Select when needing 3-phase VCORE + 1-phase SOC rail, not separate Graphics VR |
| RT8803AGQW | Single 2+1-phase VR12 controller; no integrated drivers - requires external high-side drivers | Used in cost-sensitive notebooks where layout area and BOM count are prioritized over integration | Select when external driver flexibility and lower unit cost outweigh integrated gate driver convenience |
Compared with ISL95833IRTZ-T, ISL95838IRTZ-T consolidates control into one higher-phase VR but sacrifices independent Graphics regulation, while RT8803AGQW reduces integration to cut cost but increases external component count and layout complexity.
Availability
ISL95833IRTZ-T is available at Aetrix Electronics and suitable for laptop CPU VRMs, discrete GPU power stages, IMVP-7 server nodes, and VR12 workstation platforms requiring stable component supply and long-term industrial availability.
Supply support for ISL95833IRTZ-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 delivery ICs targeting computing and industrial applications.
The ISL95833IRTZ-T belongs to Intersil's IMVP/VR-compliant PWM controller product line, designed specifically for multi-rail, high-efficiency CPU/GPU core voltage regulation in space-constrained client and workstation platforms.
FAQ
What is the primary function of the ISL95833IRTZ-T in a CPU power delivery system?
The ISL95833IRTZ-T serves as a dual-output PWM controller that manages both the VCORE (via configurable 2- or 1-phase VR1) and Graphics (via dedicated 1-phase VR2) power rails. It implements IMVP-7/VR12 protocols, provides R3 modulator-based transient response, and interfaces with the processor via SVID. Its integrated gate drivers and dual Power-Good signals make ISL95833IRTZ-T central to reliable, high-density VRM design.
Does the ISL95833IRTZ-T support both DCR and resistor-based current sensing?
Yes, the ISL95833IRTZ-T supports both lossless inductor DCR current sensing - with optional single NTC thermistor for temperature compensation - and precision shunt resistor sensing. This dual-mode capability allows designers to optimize for cost (DCR) or accuracy (resistor), and both methods are fully supported on both VR1 and VR2 outputs in the ISL95833IRTZ-T.
How does the R3 modulator in the ISL95833IRTZ-T improve transient performance?
The R3 modulator in the ISL95833IRTZ-T dynamically adjusts switching frequency during load transients, enabling faster response than fixed-frequency modulators. It reduces voltage deviation by over 40% during rapid load steps and improves light-load efficiency via automatic frequency scaling. These behaviors are inherent to the ISL95833IRTZ-T's architecture and do not require external compensation components.
Can the ISL95833IRTZ-T be used in VR12-compliant systems?
Yes, the ISL95833IRTZ-T is explicitly designed for VR12 compliance, supporting all required SVID commands, load-line specifications, and telemetry features. Its 0.5% system accuracy over temperature, programmable IMAX, and differential remote sensing meet VR12 specification limits. The ISL95833IRTZ-T has been validated in reference designs for 7th–10th Gen Intel Core platforms.
What package type and thermal characteristics does the ISL95833IRTZ-T use?
The ISL95833IRTZ-T uses a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with an exposed thermal pad. Its θJA is 32°C/W (JEDEC standard board), and it supports junction temperatures from –40°C to +125°C. The thermal pad must be soldered to a solid copper plane for optimal heat dissipation in high-current VRM layouts using the ISL95833IRTZ-T.
ISL95833IRTZ-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:
- Active
- Applications:
- Controller, Intel IMVP-7, VR12™
- Voltage - Input:
- 4.75V ~ 5.25V
- Number of Outputs:
- 2
- Voltage - Output:
- 0.25V ~ 1.52V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95833IRTZ-T FAQ
1.How can I place an order for ISL95833IRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95833IRTZ-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 ISL95833IRTZ-T reliable?
The price and inventory of ISL95833IRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95833IRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL95833IRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95833IRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95833IRTZ-T?
ISL95833IRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95833IRTZ-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 ISL95833IRTZ-T?
For technical support, including ISL95833IRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95833IRTZ-T requirements.
6.How does Aetrix verify that ISL95833IRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95833IRTZ-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 ISL95833IRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL95833IRTZ-T?
All ISL95833IRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95833IRTZ-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 ISL95833IRTZ-T part is unused and in its original packaging.
Return procedure for ISL95833IRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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