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Renesas ISL95836IRTZ-T
- Part No.:
- ISL95836IRTZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL95836IRTZ-T.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 40TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,837
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Product details
Overview
ISL95836IRTZ-T from Renesas (formerly Intersil) is a dual-output IMVP-7/VR12™ PWM controller IC for CPU and GPU core power supplies, featuring two independent VR channels - one 3+2-phase configurable (Vcore), one 2+1-phase configurable (graphics) - with integrated gate drivers, R3 modulator technology, 0.5% system voltage accuracy over temperature, and serial bus interface.
For engineers reviewing the ISL95836IRTZ-T datasheet, ISL95836IRTZ-T pinout, ISL95836IRTZ-T application, or ISL95836IRTZ-T equivalent, key selection considerations include phase configurability per output, DCR/resistor current sensing support, remote differential voltage sensing, programmable VBOOT, IMAX, switching frequency, and adaptive body diode conduction control.
Technical Context
The ISL95836IRTZ-T implements two independent VR controllers sharing a single serial control bus for IMVP-7/VR12™ compliance: VR1 supports 3-/2-/1-phase operation using two integrated gate drivers, while VR2 supports 2-/1-phase operation using one integrated gate driver. Both employ Robust Ripple Regulator R3 Technology™ for variable-frequency transient response and light-load efficiency optimization.
Each output includes differential remote voltage sensing, resistor-programmable IMAX and switching frequency, adjustable overcurrent protection, separate Power-Good signals, and support for either lossless DCR current sensing (with single NTC thermistor compensation) or precision resistor-based current sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Controller Type | Dual-output IMVP-7/VR12™ PWM controller for CPU/GPU core power |
| Phase Configurability | VR1: 3-/2-/1-phase; VR2: 2-/1-phase - enables flexible board-level VR scaling |
| Modulator Technology | Robust Ripple Regulator R3™ - enables variable switching frequency during transients and improved light-load efficiency |
| Voltage Accuracy | ±0.5% over temperature - ensures tight load-line regulation for IMVP-7/VR12™ compliance |
| Current Sensing | DCR (with NTC compensation) or precision resistor - supports lossless or high-accuracy current monitoring |
| Interface | Serial data bus - reduces component count vs. dual-chip solutions and enables CPU communication |
| Voltage Sensing | Differential remote sense - eliminates PCB trace IR drop errors for accurate VOUT regulation |
Pinout & Package
ISL95836IRTZ-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 ISL95836 datasheet Rev 1.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Input voltage supply pins | Separate input rails for VR1 and VR2 power stages - enables independent input sourcing |
| PHASE1–PHASE3 | VR1 phase drive outputs | Drive high-side FETs for up to 3-phase Vcore VR - supports interleaved timing and current balancing |
| PHASE4–PHASE5 | VR2 phase drive outputs | Drive high-side FETs for up to 2-phase graphics VR - shares serial bus but operates independently |
| SCL, SDA | Serial bus interface | Two-wire IMVP-7/VR12™ communication with CPU - replaces SMBus-based discrete controllers |
| VSNSP/VSNSN | Differential remote sense inputs | Measure true load voltage at point-of-load - critical for ±0.5% accuracy under dynamic load |
| PGOOD1, PGOOD2 | Power-good status outputs | Independent open-drain indicators per VR - enable sequenced power-up and fault isolation |
Key Features
| Feature | Design Value |
|---|---|
| Dual VR architecture with shared serial bus | Reduces BOM count and PCB area vs. discrete dual-controller designs while maintaining independent regulation |
| R3 modulator with variable-frequency operation | Delivers <1µs transient response and >90% efficiency at 10% load without requiring external frequency compensation |
| Programmable VBOOT voltage | Enables controlled high-side FET turn-on during startup - prevents shoot-through in multi-phase buck converters |
| Adaptive body diode conduction time reduction | Minimizes reverse recovery losses in synchronous rectifiers - improves thermal performance at high switching frequencies |
| Resistor-programmable IMAX and fSW | Allows fine-tuning of current limit thresholds and switching frequency per VR - supports diverse MOSFET selections and layout constraints |
Applications
| CPU Core Power Supply | GPU Core Power Supply |
|---|---|
Use Scenario: High-performance laptop/desktop CPU requiring IMVP-7/VR12™ compliant dynamic voltage scaling and load-line regulation. IC Role / Device Role / Timing Role: Primary PWM controller managing Vcore VR with 3-phase operation, remote sensing, and serial CPU interface. Use Value: Enables ±0.5% voltage accuracy across temperature and load, meeting Intel's IMVP-7 specification for processor stability and power efficiency. | Use Scenario: Discrete or integrated GPU demanding fast transient response and independent power rail control. IC Role / Device Role / Timing Role: Secondary VR controller for graphics core, operating in 2-phase mode with dedicated PGOOD and current sensing. Use Value: Delivers sub-1µs transient response via R3 modulator, minimizing GPU voltage droop during burst workloads. |
| Notebook Platform Power Management | VR12-Compliant Server CPU Power |
Use Scenario: Space-constrained ultrabook platform requiring minimal component count and thermal footprint. IC Role / Device Role / Timing Role: Dual-VR controller consolidating Vcore and GPU regulation into single QFN package with shared serial bus. Use Value: Reduces board area by ~35% vs. dual discrete controllers and simplifies firmware integration via unified bus protocol. | Use Scenario: Entry-level server CPU requiring VR12™ compliance with scalable phase configuration. IC Role / Device Role / Timing Role: Configurable VR controller supporting 1-phase (low-power) to 3-phase (high-current) Vcore operation. Use Value: Supports dynamic phase shedding and adaptive body diode control - improves full-load efficiency by up to 3.2% at 12A. |
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 |
|---|---|---|---|
| ISL95837IRTZ-T | Same pinout and feature set; supports VR12.5 extensions including SVID 2.0 and enhanced telemetry | Required for platforms implementing VR12.5 or SVID 2.0 CPU interfaces | Select ISL95837IRTZ-T when VR12.5 compliance or extended telemetry is needed; otherwise ISL95836IRTZ-T suffices for IMVP-7/VR12™ |
| RT8803AGQW | Single-chip dual-VR controller with integrated drivers; supports IMVP-8 but lacks R3 modulator and serial bus compatibility | Targets newer IMVP-8 platforms; not compatible with IMVP-7/VR12™ CPU signaling or load-line requirements | Choose RT8803AGQW only for IMVP-8 designs; ISL95836IRTZ-T remains necessary for legacy VR12™ systems |
Compared with ISL95837IRTZ-T and RT8803AGQW, the ISL95836IRTZ-T uniquely balances IMVP-7/VR12™ compliance, R3-based transient performance, and dual-VR integration in a single 48-QFN package - making it the only validated solution for cost-sensitive, space-constrained VR12™ notebook and desktop platforms.
Availability
ISL95836IRTZ-T is available at Aetrix Electronics and suitable for CPU core power supplies, GPU power delivery systems, VR12™-compliant notebooks, and embedded computing platforms requiring stable component supply and long-term lifecycle support.
Supply support for ISL95836IRTZ-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 applications.
The ISL95836IRTZ-T belongs to Renesas' IMVP-7/VR12™ power controller product line, designed specifically to meet Intel's voltage regulator specifications for next-generation CPU and GPU core power delivery with minimal external components.
FAQ
What is the primary function of the ISL95836IRTZ-T in a CPU power delivery system?
The ISL95836IRTZ-T serves as a dual-output PWM controller that manages both the CPU core (Vcore) and GPU core power rails in IMVP-7/VR12™-compliant systems. It integrates two independent VR controllers - one configurable for 3-/2-/1-phase operation and another for 2-/1-phase - with shared serial bus communication to the processor. Its R3 modulator ensures fast transient response and high light-load efficiency, making ISL95836IRTZ-T essential for stable, efficient, and specification-compliant core power delivery.
Does the ISL95836IRTZ-T support DCR current sensing, and how is temperature compensation handled?
Yes, the ISL95836IRTZ-T supports lossless inductor DCR current sensing with built-in temperature compensation using a single NTC thermistor. This compensation circuitry adjusts sensing gain based on temperature drift of the DCR value, maintaining current measurement accuracy across operating conditions. The ISL95836IRTZ-T also supports precision resistor-based current sensing as an alternative, giving designers flexibility depending on accuracy, cost, and thermal design requirements.
What package type and pin count does the ISL95836IRTZ-T use, and is it RoHS compliant?
The ISL95836IRTZ-T uses a 48-pin QFN package measuring 7mm × 7mm with 0.5mm pitch and an exposed thermal pad for enhanced thermal dissipation. It is RoHS compliant and lead-free, consistent with Renesas' environmental standards and manufacturing practices. The pinout is fully documented in the FN7835 Rev 1.00 datasheet, and the ISL95836IRTZ-T is qualified for commercial and industrial temperature ranges (–10°C to +100°C junction).
Can the ISL95836IRTZ-T be used in VR12.5 or IMVP-8 platforms?
No, the ISL95836IRTZ-T is specifically designed for IMVP-7 and VR12™ compliance and does not support VR12.5 or IMVP-8 features such as SVID 2.0, enhanced telemetry, or updated load-line definitions. For VR12.5 platforms, Renesas offers the ISL95837IRTZ-T as a direct upgrade. Using ISL95836IRTZ-T in IMVP-8 systems would result in protocol incompatibility and failure to meet required voltage regulation and communication specifications.
How does the R3 modulator in the ISL95836IRTZ-T improve transient response compared to traditional voltage-mode controllers?
The R3 modulator in the ISL95836IRTZ-T achieves faster transient response by dynamically adjusting switching frequency during load steps - increasing frequency during rapid load increases to reduce output voltage deviation, then lowering frequency at light loads to improve efficiency. Unlike fixed-frequency voltage-mode controllers, this variable-frequency architecture eliminates the need for large output capacitance and complex loop compensation. As a result, ISL95836IRTZ-T delivers sub-1µs transient response while maintaining ±0.5% regulation accuracy.
ISL95836IRTZ-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:
- 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:
- 40-TQFN (5x5)
ISL95836IRTZ-T FAQ
1.How can I place an order for ISL95836IRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95836IRTZ-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 ISL95836IRTZ-T reliable?
The price and inventory of ISL95836IRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95836IRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL95836IRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95836IRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95836IRTZ-T?
ISL95836IRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95836IRTZ-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 ISL95836IRTZ-T?
For technical support, including ISL95836IRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95836IRTZ-T requirements.
6.How does Aetrix verify that ISL95836IRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95836IRTZ-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 ISL95836IRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL95836IRTZ-T?
All ISL95836IRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95836IRTZ-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 ISL95836IRTZ-T part is unused and in its original packaging.
Return procedure for ISL95836IRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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