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Renesas ISL95835HRZ-T
- Part No.:
- ISL95835HRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL95835HRZ-T.pdf
- Description:
- IC REG CONV INTEL 2OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
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Product details
Overview
ISL95835HRZ-T from Renesas (formerly Intersil) is a dual-output IMVP-7/VR12™ compliant voltage regulator IC for CPU and GPU core power delivery, featuring 3+1 phase configuration (VR1 configurable as 3-/2-/1-phase with two integrated gate drivers; VR2 fixed 1-phase with one gate driver), 0.5% system accuracy over temperature, and Robust Ripple Regulator (R3) PWM modulation.
For engineers reviewing the ISL95835HRZ-T datasheet, ISL95835HRZ-T pinout, ISL95835HRZ-T application, or ISL95835HRZ-T equivalent, key selection considerations include IMVP-7/VR12™ serial bus compliance, DCR/resistor current sensing support, differential remote sensing, programmable VBOOT, IMAX/TMAX, and adaptive body diode conduction time reduction.
Technical Context
The ISL95835HRZ-T implements two independent voltage regulators sharing a single serial control bus (SVID) to interface with IMVP-7/VR12™ CPUs, reducing component count versus dual-chip solutions. VR1 supports 3-, 2-, or 1-phase operation using two integrated high-side/low-side gate drivers; VR2 is fixed 1-phase with one integrated gate driver.
Its R3™ PWM modulator enables variable switching frequency during load transients, faster transient settling time versus conventional modulators, and improved light-load efficiency via automatic frequency scaling. Both outputs support lossless DCR current sensing with single NTC thermistor compensation or precision resistor-based sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulator Type | Dual-output IMVP-7/VR12™ CPU voltage regulator IC with 3+1 phase capability (VR1: 3/2/1-phase; VR2: 1-phase) |
| System Accuracy | ±0.5% over full temperature range - ensures tight output voltage regulation under thermal stress |
| Current Sensing | Supports both DCR (inductor-based, lossless) and precision resistor methods - enables flexible, accurate inductor current monitoring |
| Voltage Sensing | Differential remote sense on both outputs - eliminates PCB trace IR drop errors for precise load-point regulation |
| Startup Control | Programmable VBOOT voltage - sets initial bootstrap voltage for gate driver startup sequencing |
| Protection | OC (overcurrent) protection per output, separate Power-Good signals - enables independent fault detection and system safety |
| Thermal Compensation | Single NTC thermistor supports DCR temperature compensation across both outputs - maintains current-sense accuracy over temperature |
Pinout & Package
ISL95835HRZ-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 ISL95835 datasheet (FN7671 Rev 1.00).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SVID_DATA / SVID_CLK | Serial VID bus interface | Two-wire SVID communication with CPU for dynamic voltage/frequency scaling and telemetry |
| PHASE1–PHASE3 | VR1 phase driver outputs | Drive external high-side/low-side MOSFETs for up to 3-phase VR1 operation |
| PHASE4 | VR2 phase driver output | Drives external high-side/low-side MOSFETs for 1-phase VR2 operation |
| VSNSx+, VSNSx− | Differential remote sense inputs (x = 1,2) | Enable precise load-point voltage feedback by rejecting PCB trace resistance error |
| IMONx | Current monitor output (x = 1,2) | Analog current sense signal proportional to output current for telemetry or protection |
| PGOOD1 / PGOOD2 | Power-Good status indicators | Open-drain outputs signaling valid regulation on each VR output independently |
Key Features
| Feature | Design Value |
|---|---|
| R3™ PWM Modulation | Variable switching frequency during transients + automatic light-load frequency scaling → faster settling and higher efficiency at partial load |
| Shared SVID Bus | Single serial interface controls both VRs → reduces PCB routing complexity and BOM cost vs. dual-regulator ICs |
| Programmable VBOOT | User-configurable bootstrap voltage for VR1 startup → ensures reliable gate driver turn-on across input voltage ranges |
| Adaptive Body Diode Conduction Time Reduction | Minimizes reverse recovery losses in low-side MOSFETs → improves efficiency and thermal performance |
| Resistor-Programmable IMAX/TMAX | Independent current limit and thermal trip thresholds per VR → enables fine-grained protection tuning for asymmetric CPU/GPU loads |
Applications
| Laptop CPU Core Power | Desktop VRM for IMVP-7 CPUs |
|---|---|
Use Scenario: High-performance ultrabook platform requiring dynamic voltage scaling and tight load-line regulation for Intel Core i-series processors. IC Role / Device Role / Timing Role: Primary CPU core voltage regulator delivering up to 3-phase power with SVID-controlled VID updates. Use Value: 0.5% system accuracy and R3™ transient response maintain stable VDD under rapid CPU P-state transitions. | Use Scenario: ATX motherboard VRM design supporting Intel 2nd/3rd Gen Core processors with IMVP-7 compliance. IC Role / Device Role / Timing Role: Dual-rail controller managing CPU core (VR1) and graphics (VR2) power domains from shared SVID interface. Use Value: Shared serial bus and integrated gate drivers reduce component count and layout area versus discrete multi-chip solutions. |
| Gaming Laptop GPU Core Supply | Embedded Computing with Dual-Load Regulation |
Use Scenario: Thin-and-light gaming laptop requiring independent, tightly regulated power for discrete GPU alongside CPU. IC Role / Device Role / Timing Role: VR2 supplies GPU core voltage with dedicated 1-phase regulation and remote sensing. Use Value: Differential remote sensing and programmable IMAX prevent GPU voltage droop during burst workloads like shader compilation. | Use Scenario: Industrial embedded controller board needing isolated, independently monitored CPU and I/O rail regulation. IC Role / Device Role / Timing Role: Dual-output regulator providing separate, SVID-coordinated power rails with independent Power-Good signaling. Use Value: Separate PGOOD1/PGOOD2 outputs enable system-level fault isolation without additional supervision circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output IMVP-7/VR12™ voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95837HRZ-T | Fixed 1+1 phase configuration (both VRs 1-phase); no 3-phase capability for VR1 | Targeted for lower-power CPUs or systems where 3-phase VR1 is unnecessary | Select ISL95837HRZ-T only when VR1 phase count is capped at 1 and board space is constrained |
| RT8803AGQW | Single-chip dual-output VR with integrated MOSFET drivers but no R3™ modulation; fixed 2+1 phase topology | Designed for VR12.5/VR13 platforms with different SVID command set and telemetry structure | Choose RT8803AGQW for newer VR12.5-compliant designs requiring integrated FET drivers and different thermal management features |
Compared with ISL95835HRZ-T, ISL95837HRZ-T sacrifices VR1 phase flexibility for smaller footprint and lower gate count, while RT8803AGQW targets next-generation VR standards with distinct modulation and telemetry architecture - neither offers pin-to-pin compatibility.
Availability
ISL95835HRZ-T is available at Aetrix Electronics and suitable for laptop CPU core power, desktop VRM designs, and embedded dual-load regulation requiring stable component supply, long-term lifecycle support, and IMVP-7/VR12™ compliance.
Supply support for ISL95835HRZ-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) is a global semiconductor leader specializing in microcontrollers, analog, power management, and connectivity solutions for automotive, industrial, and computing markets.
The ISL95835HRZ-T belongs to Renesas' high-precision CPU voltage regulator product line, engineered specifically for IMVP-7/VR12™-compliant notebook and desktop platforms demanding fast transient response, multi-phase flexibility, and SVID interoperability.
FAQ
What is the primary function of the ISL95835HRZ-T in a CPU power delivery system?
The ISL95835HRZ-T serves as a dual-output, IMVP-7/VR12™-compliant voltage regulator IC that manages CPU core (VR1) and GPU or I/O (VR2) power rails. It integrates gate drivers, SVID interface, and R3™ PWM control to deliver tightly regulated, dynamically scaled voltages. The ISL95835HRZ-T enables 3+1 phase operation with shared serial bus communication, reducing system complexity versus discrete solutions.
Does the ISL95835HRZ-T support both DCR and resistor-based current sensing?
Yes, the ISL95835HRZ-T supports both lossless inductor DCR current sensing with single NTC thermistor compensation and precision resistor-based current sensing on both VR outputs. This dual-sensing capability allows designers to optimize for efficiency (DCR) or accuracy (resistor) depending on board layout and thermal constraints. The ISL95835HRZ-T's sensing architecture maintains ±0.5% system accuracy across temperature when properly configured.
What package type and pin count does the ISL95835HRZ-T use?
The ISL95835HRZ-T uses a 48-pin QFN package measuring 7mm × 7mm with 0.5mm pitch and an exposed thermal pad for enhanced thermal dissipation. Pin assignments include dedicated SVID_DATA/SVID_CLK lines, PHASE1–PHASE4 driver outputs, differential remote sense pairs (VSNS1+/−, VSNS2+/−), IMON current monitor outputs, and independent PGOOD1/PGOOD2 signals. The ISL95835HRZ-T's pinout is documented in FN7671 Rev 1.00.
How does the R3™ PWM technology in the ISL95835HRZ-T improve transient response?
The R3™ PWM modulator in the ISL95835HRZ-T achieves faster transient settling time by varying switching frequency during load steps and automatically scaling frequency at light loads. Unlike fixed-frequency modulators, this behavior minimizes output voltage deviation during rapid CPU current changes. The ISL95835HRZ-T leverages R3™ to meet IMVP-7/VR12™ transient specification requirements without external compensation components.
Can the ISL95835HRZ-T be used in VR12.5 or VR13-compliant systems?
No, the ISL95835HRZ-T is specifically designed for IMVP-7 and VR12™ compliance and does not support VR12.5 or VR13 command sets, telemetry structures, or load-line definitions. Its SVID interface implements only the register map and timing parameters defined in Intel's IMVP-7/VR12™ specifications. For VR12.5/VR13 systems, designers must select regulators such as the RT8803AGQW or ISL95858, as the ISL95835HRZ-T lacks required feature extensions.
ISL95835HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, Intel IMVP-7, VR12™
- Voltage - Input:
- 4.5V ~ 5.5V
- Number of Outputs:
- 2
- Voltage - Output:
- Up to 1.52V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (5x5)
ISL95835HRZ-T FAQ
1.How can I place an order for ISL95835HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95835HRZ-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 ISL95835HRZ-T reliable?
The price and inventory of ISL95835HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95835HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95835HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95835HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95835HRZ-T?
ISL95835HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95835HRZ-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 ISL95835HRZ-T?
For technical support, including ISL95835HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95835HRZ-T requirements.
6.How does Aetrix verify that ISL95835HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95835HRZ-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 ISL95835HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95835HRZ-T?
All ISL95835HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95835HRZ-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 ISL95835HRZ-T part is unused and in its original packaging.
Return procedure for ISL95835HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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