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Renesas ISL95853IRZR5722
- Part No.:
- ISL95853IRZR5722
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95853IRZR5722.pdf
- Description:
- MULTI-PHASE CORE CONTROLLER FOR
- Quantity:
- Payment:
- Shipping:
Inventory:3,638
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Product details
Overview
ISL95853IRZR5722 from Renesas Electronics (formerly Intersil) is a multiphase PWM regulator IC designed for IMVP8™-compliant CPU core power delivery, supporting 1-, 2-, or 3-phase configurations with two integrated gate drivers and one external driver, 0.5% system voltage accuracy over temperature, DCR or resistor-based current sensing, and SVID serial interface communication with the processor.
For engineers reviewing the ISL95853IRZR5722 datasheet, ISL95853IRZR5722 pinout, ISL95853IRZR5722 application, or ISL95853IRZR5722 equivalent, key selection criteria include IMVP8 compliance, R3™ modulator transient response, programmable ICCMAX and slew rate, remote voltage sensing capability, and compatibility with Intel microprocessor VR control requirements.
Technical Context
The ISL95853IRZR5722 implements Intersil's Robust Ripple Regulator (R3™) topology, enabling variable switching frequency during load transients and faster transient settling versus conventional fixed-frequency PWM modulators. It supports SVID v1.0 communication for dynamic voltage/frequency scaling and VR configuration.
It integrates dual high-side gate drivers (capable of driving external low-side MOSFETs), supports differential remote sense for ±10 mV accuracy, and provides adaptive body diode conduction time reduction to minimize shoot-through losses in synchronous buck stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Standard | Fully compliant with Intel IMVP8™ specification for CPU core VR control and telemetry. |
| Phase Configuration | Configurable 1-, 2-, or 3-phase operation using two integrated gate drivers and one external driver. |
| Voltage Accuracy | ±0.5% system accuracy over full temperature range, critical for stable CPU VDD under thermal stress. |
| Current Sensing | Supports lossless DCR sensing with single NTC thermistor compensation or precision shunt resistor sensing. |
| Interface Protocol | SVID (Serial Voltage Identification) v1.0 for bidirectional CPU–VR communication and dynamic VID updates. |
| Remote Sense | Differential remote voltage sensing with ±10 mV offset tolerance to reject PCB IR drop errors. |
| Protection Features | Programmable overcurrent protection (ICCMAX), power-good output, and adjustable voltage transition slew rate. |
Pinout & Package
ISL95853IRZR5722 is packaged in a 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the official ISL95853 datasheet (FN8606), including SVID bus pins (SVID_DATA, SVID_CLK), phase control outputs (PHASE0–PHASE2), current sense inputs (CSINP/CSINN), remote sense inputs (VSNSP/VSNSN), and configuration resistors (ICCMAX, SLEW).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SVID_DATA / SVID_CLK | SVID serial interface I/O and clock | Enables real-time CPU–VR communication for VID updates, telemetry reporting, and VR status monitoring. |
| PHASE0 / PHASE1 / PHASE2 | Gate drive outputs | Drive high-side MOSFETs in up to 3-phase buck topology; PHASE0/PHASE1 are integrated, PHASE2 requires external driver. |
| CSINP / CSINN | Current sense differential input | Accepts DCR voltage drop or shunt resistor signal for accurate inductor current measurement and phase current balancing. |
| VSNSP / VSNSN | Remote voltage sense differential input | Measures CPU core voltage at point-of-load to compensate for PCB trace resistance and ensure tight regulation. |
| PGOOD | Power-good open-drain output | Signals valid output voltage after startup and monitors for undervoltage/fault conditions per IMVP8 timing requirements. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ PWM modulation | Variable switching frequency during load transients improves transient response and light-load efficiency without requiring external compensation. |
| Programmable ICCMAX | Resistor-set overcurrent limit enables precise phase current protection aligned with CPU thermal envelope and package specifications. |
| Adjustable voltage slew rate | Configurable dV/dt prevents excessive inrush current during VID transitions and meets IMVP8 voltage ramp timing constraints. |
| VBOOT programming | Start-up bootstrap voltage is resistor-programmable to optimize gate drive strength and reduce MOSFET turn-on delay during cold boot. |
| System input power monitor | Integrated power calculation block reports real-time input power via SVID, supporting CPU power management and thermal throttling decisions. |
Applications
| Notebook CPU Core VR | Desktop CPU Core VR |
|---|---|
Use Scenario: High-performance ultrabook platform with quad-core Intel mobile CPU requiring fast dynamic voltage scaling and thermal-aware power delivery. IC Role / Device Role / Timing Role: Primary IMVP8-compliant multiphase VR controller managing core voltage, current telemetry, and power-state transitions via SVID. Use Value: Enables sub-10 µs transient response and ±0.5% voltage accuracy across -10°C to +105°C, ensuring CPU stability during burst workloads. | Use Scenario: ATX motherboard with desktop-class Intel processor needing scalable phase count and robust overcurrent protection. IC Role / Device Role / Timing Role: Configurable 3-phase VR controller coordinating gate drivers, remote sensing, and SVID-based CPU power state negotiation. Use Value: Supports programmable ICCMAX and slew rate to match CPU TDP limits and prevent VR shutdown during heavy multi-threaded loads. |
| Embedded Computing Platform | Workstation-Class Mobile System |
Use Scenario: Fanless industrial embedded system with extended temperature operation and strict EMI constraints. IC Role / Device Role / Timing Role: IMVP8 VR controller implementing R3™ modulation to reduce audible noise and improve light-load efficiency without compromising regulation. Use Value: Variable-frequency operation minimizes switching losses at low load, extending system runtime while maintaining <1% load-line deviation. | Use Scenario: Mobile workstation with discrete GPU and high-TDP CPU sharing VR resources and thermal headroom. IC Role / Device Role / Timing Role: Dual-role VR controller providing coordinated voltage/frequency scaling for CPU and GPU domains via SVID and system power monitor. Use Value: Integrated input power reporting enables cross-domain thermal management and dynamic power budget allocation between CPU and GPU subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase CPU VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT8803AZSP | Supports IMVP9 and VR13, higher max phase count (up to 4), no R3™ modulation; uses traditional fixed-frequency PWM. | Targeted at newer Intel platforms post-IMVP8; lacks IMVP8-specific SVID timing and load-line compliance. | Select RT8803AZSP only when upgrading to IMVP9/VR13 platforms; not drop-in compatible with ISL95853IRZR5722 layouts or firmware. |
| ISL95855IRZ | Same IMVP8 compliance and R3™ architecture, but supports 3 integrated gate drivers (no external driver required); different pinout and package (56-pin QFN). | Enables fully integrated 3-phase design without external driver component; requires PCB redesign due to pin count and layout differences. | Choose ISL95855IRZ for simplified BOM and reduced board area where 3-phase integration is preferred and layout revision is feasible. |
Compared with RT8803AZSP and ISL95855IRZ, the ISL95853IRZR5722 uniquely balances IMVP8 compliance, R3™ transient performance, and flexible 1–3-phase scalability with minimal external components-making it optimal for cost-sensitive, thermally constrained notebook and desktop VR designs requiring proven platform validation.
Availability
ISL95853IRZR5722 is available at Aetrix Electronics and suitable for notebook computers, desktop motherboards, and embedded computing platforms requiring stable component supply, long-term lifecycle support, and IMVP8-compliant CPU power delivery.
Supply support for ISL95853IRZR5722 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 ISL95853IRZR5722 belongs to Renesas' IMVP8 VR controller product line, engineered specifically for energy-efficient, high-transient-response CPU core power supplies in space-constrained client platforms.
FAQ
What is the primary function of the ISL95853IRZR5722 in a CPU power delivery system?
The ISL95853IRZR5722 serves as the IMVP8-compliant multiphase PWM controller that regulates core voltage for Intel CPUs by interpreting SVID commands, driving gate drivers, performing current/voltage sensing, and enforcing protection limits. Its R3™ modulation ensures fast transient response and high accuracy, making ISL95853IRZR5722 essential for stable CPU operation under dynamic workloads.
Does the ISL95853IRZR5722 support both DCR and resistor-based current sensing?
Yes, the ISL95853IRZR5722 supports dual current sensing methods: lossless inductor DCR sensing with single NTC thermistor compensation for temperature drift correction, and precision shunt resistor sensing. This flexibility allows designers to optimize for cost, accuracy, or board space-both methods are validated in the ISL95853IRZR5722 datasheet and supported across all phase configurations.
What package type and pin count does the ISL95853IRZR5722 use?
The ISL95853IRZR5722 uses a 48-pin QFN package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. This compact footprint supports high-density motherboard layouts while enabling efficient thermal dissipation. Pin assignments-including SVID, phase drivers, current sense, and remote sense-are documented in the official FN8606 datasheet for ISL95853IRZR5722.
How does the R3™ technology in the ISL95853IRZR5722 improve transient performance?
R3™ technology in the ISL95853IRZR5722 dynamically adjusts switching frequency during load transients, reducing settling time compared to fixed-frequency modulators. It also enhances light-load efficiency by lowering frequency at low current. These behaviors are intrinsic to the ISL95853IRZR5722's internal architecture and require no external compensation, directly improving CPU voltage stability during rapid workload changes.
Can the ISL95853IRZR5722 be configured for single-phase operation?
Yes, the ISL95853IRZR5722 supports configurable 1-, 2-, or 3-phase operation via resistor programming and SVID configuration. In single-phase mode, it uses only PHASE0 and the external driver path (if needed), simplifying design for lower-power CPUs or auxiliary rails. All protection, sensing, and regulation features-including remote sense and ICCMAX-remain fully functional in ISL95853IRZR5722 single-phase configurations.
ISL95853IRZR5722 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/Converter, Intel IMVP8
- Voltage - Input:
- -
- Number of Outputs:
- 1
- Voltage - Output:
- Multiple
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95853IRZR5722 FAQ
1.How can I place an order for ISL95853IRZR5722 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95853IRZR5722 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 ISL95853IRZR5722 reliable?
The price and inventory of ISL95853IRZR5722 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95853IRZR5722 is usually 5 days.
3.What payment methods are accepted for ISL95853IRZR5722?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95853IRZR5722 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95853IRZR5722?
ISL95853IRZR5722 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95853IRZR5722 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 ISL95853IRZR5722?
For technical support, including ISL95853IRZR5722 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95853IRZR5722 requirements.
6.How does Aetrix verify that ISL95853IRZR5722 is sourced from the original manufacturer or authorized distributors?
All ISL95853IRZR5722 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 ISL95853IRZR5722 meets industry standards.
7.What is the process for return or replacement of ISL95853IRZR5722?
All ISL95853IRZR5722 units undergo pre-shipment inspection (PSI). If there is an issue with ISL95853IRZR5722, 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 ISL95853IRZR5722 part is unused and in its original packaging.
Return procedure for ISL95853IRZR5722:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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