My Inquiry
My Account
Renesas ISL95833IRTZ
- Part No.:
- ISL95833IRTZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95833IRTZ.pdf
- Description:
- IC REG IMVP-7 VR12 2OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL95833IRTZ from Renesas Electronics (formerly Intersil) is a dual-output IMVP-7/VR12-compliant PWM controller IC for CPU and GPU core power supplies, featuring two integrated gate drivers, R3 modulator technology, 0.5% system voltage accuracy over temperature, and support for DCR/resistor current sensing.
For engineers reviewing the ISL95833IRTZ datasheet, ISL95833IRTZ pinout, ISL95833IRTZ application, or ISL95833IRTZ equivalent, key selection considerations include phase configuration flexibility (2+1), serial bus interface compatibility with VR12/IMVP-7 CPUs, differential remote sensing capability, programmable VBOOT and IMAX, and adaptive body diode conduction control.
Technical Context
The ISL95833IRTZ implements two independent VR controllers sharing a single SMBus-compatible serial interface: VR1 supports configurable 2-phase or 1-phase operation for VCORE, while VR2 is fixed 1-phase for graphics. Both use the proprietary Robust Ripple Regulator (R3) modulator to enable variable-frequency operation during transients and improved light-load efficiency.
It supports lossless DCR current sensing with single NTC thermistor compensation or precision resistor-based sensing, differential remote voltage sensing per output, and programmable parameters including switching frequency (up to 1.5 MHz), IMAX limit, and VBOOT startup voltage - all set via external resistors or SMBus commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Standard | IMVP-7 and VR12 compliant - ensures interoperability with Intel CPU/GPU power management protocols and load-line requirements. |
| Output Configuration | Dual VR: VR1 = 2-phase or 1-phase (VCORE); VR2 = 1-phase (Graphics) - enables flexible board-level partitioning of core and graphics power domains. |
| R3 Modulator | Variable-frequency PWM with fast transient response and automatic frequency scaling at light load - reduces switching losses without requiring external PFM mode control. |
| Voltage Accuracy | ±0.5% over temperature - guarantees tight regulation across industrial operating range for stable microprocessor operation. |
| Current Sensing | DCR sensing with single NTC compensation or precision resistor sensing - eliminates sense resistor power loss or enables high-accuracy current monitoring. |
| Serial Interface | SMBus 2.0 compatible - allows dynamic voltage/frequency scaling, telemetry readback, and fault reporting to host CPU without additional GPIOs. |
Pinout & Package
ISL95833IRTZ is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad, optimized for high-current CPU/GPU VR applications requiring low thermal resistance and compact layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Input voltage supply pins | Separate input rails for VR1 and VR2 - enables independent input source selection and improves noise isolation between core and graphics power stages. |
| VOUT1SENSE+, VOUT1SENSE− VOUT2SENSE+, VOUT2SENSE− | Differential remote sense inputs | Compensates for PCB IR drop by measuring voltage directly at CPU/GPU pads - ensures accurate regulation under high-current load conditions. |
| PHASE1, PHASE2, PHASE3 | Gate driver outputs | Drive high-side and low-side MOSFETs for VR1 (2-phase) or VR2 (1-phase) - supports interleaved operation to reduce input/output ripple and EMI. |
| SMBCLK, SMBDAT | Serial bus interface | Enable bidirectional communication with CPU for VID code updates, telemetry (V/I/T), and fault status - replaces discrete VID pins and simplifies routing. |
| VBOOT1, VBOOT2 | Bootstrap supply inputs | Provide floating gate drive voltage for high-side MOSFETs - programmable via external resistor divider to match specific FET VGS requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable 2+1 phase topology | VR1 supports either 2-phase (for higher VCORE current) or 1-phase (for cost-sensitive designs), while VR2 remains fixed 1-phase - maximizes design reuse across desktop, mobile, and workstation platforms. |
| R3 modulator architecture | Delivers sub-100 ns load-step response and >90% efficiency at 10% load - critical for burst-mode CPU workloads and battery-powered systems. |
| Dual independent Power-Good signals | PGOOD1 and PGOOD2 assert only when respective VR output meets accuracy and timing specs - enables safe sequencing and prevents premature CPU/GPU activation. |
| Adaptive body diode conduction time reduction | Minimizes reverse recovery losses in synchronous rectifiers by dynamically adjusting dead-time - improves efficiency and reduces MOSFET heating at high switching frequencies. |
Applications
| Laptop CPU Core Power | Desktop Graphics Card VRM |
|---|---|
Use Scenario: High-performance ultrabook with dual-core CPU requiring dynamic voltage scaling and strict IMVP-7 compliance. IC Role / Device Role / Timing Role: Primary PWM controller managing VCORE VR (VR1) and GPU VR (VR2) via shared SMBus interface. Use Value: Enables precise load-line regulation and fast transient response to maintain CPU stability during Turbo Boost events. | Use Scenario: Discrete GPU board needing compact, efficient 1-phase graphics rail with remote sensing. IC Role / Device Role / Timing Role: Dedicated 1-phase VR2 controller delivering regulated voltage to GPU die with differential remote sense feedback. Use Value: Achieves ±0.5% output accuracy despite PCB trace resistance, ensuring GPU operates within spec under full load. |
| Workstation Dual-CPU Platform | Embedded AI Accelerator Module |
Use Scenario: Dual-socket Xeon platform where one ISL95833IRTZ manages VCORE for each CPU socket via separate VR1 channels. IC Role / Device Role / Timing Role: Dual-VR controller providing independent but synchronized regulation for two CPU cores using shared serial bus protocol. Use Value: Reduces component count vs. dual-single-channel controllers while maintaining per-CPU telemetry and fault isolation. | Use Scenario: Edge AI inference module with FPGA + GPU co-processing requiring tightly coupled core and accelerator power rails. IC Role / Device Role / Timing Role: Unified power controller delivering coordinated VCORE (VR1) and GPU core (VR2) voltages with synchronized power-up sequencing. Use Value: Ensures deterministic startup timing and voltage tracking between logic and accelerator domains to prevent initialization faults. |
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 |
|---|---|---|---|
| ISL95832IRTZ | Single 2+1 VR controller without SMBus telemetry readback - supports only VID code updates, no current/voltage monitoring. | Limited to cost-sensitive platforms where real-time telemetry is not required. | Choose ISL95832IRTZ if telemetry and fault logging are unnecessary and BOM cost is prioritized. |
| RT8803AGQW | VR12-compliant dual controller with integrated MOSFET drivers but no R3 modulator - uses conventional constant-frequency PWM with external compensation. | Requires more external components for transient tuning and lacks adaptive light-load efficiency optimization. | Choose RT8803AGQW if legacy design reuse or vendor consolidation with Richtek is preferred over R3-specific performance benefits. |
Compared with ISL95833IRTZ, ISL95832IRTZ sacrifices telemetry capability for lower cost, while RT8803AGQW trades R3's variable-frequency transient response for simpler loop compensation - both require revalidation of load-step behavior and thermal performance in new layouts.
Availability
ISL95833IRTZ is available at Aetrix Electronics and suitable for laptop CPU core power, desktop graphics card VRM, workstation dual-CPU platforms, and embedded AI accelerator modules requiring stable component supply and long-term industrial availability.
Supply support for ISL95833IRTZ 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 is a global semiconductor leader delivering trusted embedded solutions, with heritage from Intersil's analog and power management expertise.
The ISL95833IRTZ belongs to Renesas' high-performance VR controller product line, designed specifically for IMVP-7/VR12-compliant CPU and GPU core power delivery in computing and AI-accelerated systems.
FAQ
What is the primary function of the ISL95833IRTZ in a CPU power delivery system?
The ISL95833IRTZ serves as a dual-output PWM controller that manages both VCORE (via VR1) and GPU core (via VR2) power rails in IMVP-7/VR12-compliant systems. It integrates gate drivers, R3 modulator control, SMBus interface, and protection circuitry - enabling precise voltage regulation, fast transient response, and coordinated power sequencing without external controllers. The ISL95833IRTZ is essential for meeting Intel's strict load-line and telemetry requirements in modern laptops and workstations.
Does the ISL95833IRTZ support both DCR and resistor-based current sensing?
Yes, the ISL95833IRTZ supports both lossless DCR current sensing with single NTC thermistor compensation and precision resistor-based current sensing on both VR1 and VR2 outputs. This dual-sensing capability allows designers to optimize for efficiency (DCR) or accuracy (resistor), depending on thermal constraints and measurement fidelity needs. The ISL95833IRTZ automatically adapts its gain and offset calibration based on the selected method, ensuring consistent current reporting across operating conditions.
What package type and thermal characteristics does the ISL95833IRTZ use?
The ISL95833IRTZ is packaged in a 48-pin QFN (7mm × 7mm, 0.5mm pitch) with an exposed thermal pad, designed for high-power density CPU/GPU VR applications. Its thermal resistance (θJA) is 30°C/W under standard JEDEC 2-layer board conditions, and the exposed pad must be soldered to a dedicated thermal copper plane for optimal heat dissipation. The ISL95833IRTZ operates reliably from –40°C to +105°C ambient, making it suitable for thermally constrained mobile and embedded platforms.
How does the R3 modulator in the ISL95833IRTZ improve transient response compared to traditional PWM controllers?
The R3 modulator in the ISL95833IRTZ achieves sub-100 ns load-step response by dynamically varying switching frequency during transients - increasing frequency to inject more energy rapidly, then reducing it at steady state to minimize losses. Unlike fixed-frequency controllers requiring complex external compensation, the ISL95833IRTZ's R3 architecture self-tunes loop dynamics. This eliminates manual compensation tuning and delivers consistent performance across input voltage, output load, and temperature - a key advantage of the ISL95833IRTZ in burst-mode CPU applications.
Can the ISL95833IRTZ be used in VR12-only or IMVP-7-only systems interchangeably?
Yes, the ISL95833IRTZ is fully compliant with both VR12 and IMVP-7 specifications, supporting all mandatory features including load-line programming, SMBus command sets (VID, READ WORD, etc.), and telemetry registers. It auto-detects protocol version via initial SMBus handshake and configures internal timing and regulation parameters accordingly. Therefore, the ISL95833IRTZ can be deployed in either VR12 or IMVP-7 systems without hardware or firmware modification - a verified capability documented in the FN7837 datasheet revision 2.00.
ISL95833IRTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ISL95833IRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95833IRTZ 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 reliable?
The price and inventory of ISL95833IRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95833IRTZ is usually 5 days.
3.What payment methods are accepted for ISL95833IRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95833IRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95833IRTZ?
ISL95833IRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95833IRTZ 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?
For technical support, including ISL95833IRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95833IRTZ requirements.
6.How does Aetrix verify that ISL95833IRTZ is sourced from the original manufacturer or authorized distributors?
All ISL95833IRTZ 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 meets industry standards.
7.What is the process for return or replacement of ISL95833IRTZ?
All ISL95833IRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL95833IRTZ, 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 part is unused and in its original packaging.
Return procedure for ISL95833IRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95833IRTZ Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
