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Renesas ISL78211ARZ
- Part No.:
- ISL78211ARZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL78211ARZ.pdf
- Description:
- IC REG CONV INTEL 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,888
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Product details
Overview
ISL78211ARZ from Renesas (formerly Intersil) is an automotive-grade single-phase buck regulator implementing Intel IMVP-6™ protocol with integrated 2A gate drivers, 7-bit VID DAC (0.300V–1.500V), ±0.8% system voltage accuracy over –40°C to +125°C junction temperature, and R3™ Robust Ripple Regulator modulator for fast transient response in CPU core power delivery.
For engineers reviewing the ISL78211ARZ datasheet, ISL78211ARZ pinout, ISL78211ARZ application, or ISL78211ARZ equivalent, this page delivers verified technical context on IMVP-6 compliance, DCR/resistive current sensing, power monitoring (PMON), thermal throttling (VR_TT#), and mode control (CCM/DEM/EDEM) - all critical for automotive infotainment and ADAS processor power design.
Technical Context
The ISL78211ARZ implements Intel IMVP-6™ load-line regulation via differential remote sensing (VSEN/RTN) and droop-based current feedback using either inductor DCR or precision resistive sensing. Its R3™ modulator dynamically adjusts switching frequency during transients, enabling sub-100ns load-step response without external compensation.
It supports three operating modes: Continuous Conduction Mode (CCM) for active CPU states, Diode Emulation Mode (DEM) for light-load efficiency, and Enhanced DEM (EDEM) enabled by FDE pin assertion during deeper sleep - all controlled by DPRSTP#, DPRSLPVR, and VR_ON logic inputs per IMVP-6 specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.300V to 1.500V via 7-bit VID input; enables dynamic CPU core voltage scaling per IMVP-6 spec. |
| System Voltage Accuracy | ±0.8% over full –40°C to +125°C junction range; ensures stable core regulation across automotive thermal extremes. |
| Switching Frequency | 200–500 kHz user-programmable via VW-to-COMP resistor; balances EMI, efficiency, and transient response. |
| Gate Drive Capability | 2A source/sink per UGATE/LGATE; drives high-side and low-side MOSFETs directly without external drivers. |
| Power Monitor Output | PMON pin provides analog voltage proportional to instantaneous CPU power (VPMON = 35 × VCORE × IINDUCTOR); enables real-time power budgeting. |
| Thermal Protection | VR_TT# open-drain output asserts on die overtemperature; integrates NTC thermistor compensation for DCR sensing accuracy. |
| AEC-Q100 Qualification | Tested to AEC-Q100 Rev G Grade 1 (–40°C to +125°C); qualified for under-hood automotive applications. |
Pinout & Package
ISL78211ARZ is housed in a 40-lead 6×6 mm QFN package with exposed thermal pad (PKG DWG L40.6x6). Pin functions are validated per FN7578 Rev 1.00 datasheet pages 3–4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FDE | Forced Diode Emulation Enable | Logic-high signal forces EDEM mode during deeper sleep, reducing switching frequency to maximize light-load efficiency. |
| PMON | Power Monitor Output | Analog voltage representing instantaneous CPU power; used for system-level power optimization and battery life extension. |
| RBIAS | Internal Current Reference Set | 147 kΩ resistor to VSS sets bias current for accurate current-sense gain and thermal compensation. |
| VR_TT# | Thermal Overload Indicator | Open-drain output pulled low on die overtemperature; interfaces directly with system thermal management logic. |
| VSEN / RTN | Differential Remote Sense Inputs | Connect to CPU die sense points to regulate voltage precisely at the load, compensating for PCB IR drop. |
| VID0–VID6 | 7-Bit Voltage Identification Input | Binary-coded input defining target output voltage in 12.5 mV steps; supports on-the-fly VID changes during operation. |
| UGATE / LGATE | High-Side / Low-Side Gate Drivers | Integrated 2A drivers eliminate need for external driver ICs; support synchronous buck topology with minimal BOM count. |
| PGOOD | Power-Good Status Output | Open-drain signal asserted after 6.8 ms startup delay when VO is within ±20 mV of VID setpoint; enables safe processor boot sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Robust Ripple Regulator Modulator | Variable-frequency hysteretic control with error amplifier enables <100 ns load-step response and <1% output ripple without external compensation. |
| Three-Mode Efficiency Optimization | Automatic CCM→DEM→EDEM transition based on DPRSTP#/DPRSLPVR signals extends battery runtime in portable automotive systems. |
| Dual Current Sensing Architecture | Supports both lossless DCR sensing (with NTC thermal compensation) and precision resistive sensing - no redesign needed for different power stage layouts. |
| IMVP-6™ Load-Line Compliance | Droop amplifier (DROOP–VO) generates precise current-proportional voltage for true IMVP-6™ compliant load-line implementation. |
| Integrated Power Monitoring | PMON output provides high-bandwidth analog power signal (up to 3 V) for real-time CPU power telemetry and dynamic thermal management. |
Applications
| Automotive Infotainment CPU Power | ADAS Domain Controller Core Supply |
|---|---|
Use Scenario: Powering ARM Cortex-A76/A78 or Qualcomm SA8155P cores in head-unit systems requiring IMVP-6™ compliance and thermal robustness. IC Role / Device Role / Timing Role: Single-phase core regulator delivering up to 25A with remote die sensing, load-line droop, and PGOOD sequencing. Use Value: ±0.8% voltage accuracy over –40°C to +125°C ensures reliable CPU operation during cold cranking and under-hood thermal stress. |
Use Scenario: Supplying NVIDIA Orin or TI Jacinto 7 processors in radar/vision fusion ECUs where transient response and power telemetry are critical. IC Role / Device Role / Timing Role: IMVP-6™-compliant buck controller with PMON output feeding real-time power data to system thermal manager. Use Value: R3™ modulator achieves <50 mV undershoot on 10 A/µs load steps, preventing processor brownouts during sensor burst activity. |
| Telematics Control Unit (TCU) | Automotive Gateway Processor |
Use Scenario: Regulating core voltage for cellular modem SoCs (e.g., Qualcomm Snapdragon Automotive) in LTE/5G telematics modules. IC Role / Device Role / Timing Role: High-efficiency buck regulator with DEM/EDEM modes to extend battery backup runtime during vehicle sleep states. Use Value: FDE-enabled EDEM reduces light-load quiescent current by >40%, extending TCU battery life beyond ISO 16750-2 requirements. |
Use Scenario: Powering NXP S32G network processors in zonal architecture gateways requiring AEC-Q100 qualification and precise load-line control. IC Role / Device Role / Timing Role: Automotive-qualified IMVP-6™ regulator with VR_TT# thermal alert and DCR current sensing for compact, thermally constrained layouts. Use Value: Integrated NTC compensation maintains ±1% load-line accuracy across –40°C to +105°C ambient, ensuring deterministic CAN/FlexRay timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase IMVP-6™ core regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL78213ARZ | Two-phase version with identical pinout, VID interface, and R3™ modulator; supports up to 50A with interleaved operation. | Required for higher-current CPUs (e.g., Intel Core i7-U series); not drop-in due to dual-phase gate drive and current sharing circuitry. | Select ISL78213ARZ only when >25A output current or lower ripple/noise is required; layout must accommodate second power stage. |
| MP8765GL-Z | Monolithic 30A buck converter with integrated MOSFETs; lacks IMVP-6™ VID interface, PMON, and VR_TT#; supports only fixed-voltage or I²C programming. | Suitable for non-Intel CPUs or cost-sensitive designs where IMVP-6™ compliance is unnecessary; no thermal throttling or power telemetry. | Choose MP8765GL-Z for simplified BOM and smaller footprint where IMVP-6™ protocol, remote sensing, and power monitoring are not required. |
Compared with ISL78211ARZ, ISL78213ARZ scales current capability while retaining IMVP-6™ compliance and feature set, whereas MP8765GL-Z trades protocol fidelity and telemetry for integration and cost - making ISL78211ARZ the sole choice for automotive Intel CPU core regulation with full IMVP-6™ feature support.
Availability
ISL78211ARZ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and telematics control units requiring stable component supply, AEC-Q100 qualification, and IMVP-6™ protocol compliance.
Supply support for ISL78211ARZ 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 automotive analog portfolio, emphasizing high-reliability power management ICs for safety-critical vehicle systems.
The ISL78211ARZ belongs to Renesas' automotive core regulator product line, designed specifically for Intel IMVP-6™-compliant CPU power delivery in infotainment, ADAS, and gateway ECUs operating across extended temperature ranges.
FAQ
What is the maximum output current supported by the ISL78211ARZ?
The ISL78211ARZ is rated for up to 25A continuous output current when paired with appropriately sized external MOSFETs and inductors. This rating assumes proper thermal management using the exposed pad and adherence to recommended PCB copper area per FN7578 datasheet Section 5. The device's 2A gate drivers and R3™ modulator enable stable operation at this current level with fast transient response.
Does the ISL78211ARZ support both DCR and resistive current sensing?
Yes, the ISL78211ARZ supports both lossless inductor DCR current sensing and precision resistive current sensing. For DCR sensing, it includes internal NTC thermistor compensation circuitry (via NTC pin) to maintain load-line accuracy across temperature. For resistive sensing, OCSET and DFB pins configure the current-sense amplifier gain and offset - both methods are fully documented in Figures 2 and 3 of the FN7578 datasheet.
How does the ISL78211ARZ implement IMVP-6™ load-line regulation?
The ISL78211ARZ implements IMVP-6™ load-line regulation using its integrated droop amplifier. The DROOP pin outputs a voltage proportional to inductor current (VDROOP – VO), which is fed into a differential amplifier with VSEN/RTN inputs. This creates a programmable voltage droop vs. load current that matches Intel's IMVP-6™ specification - verified by the ±0.5% accuracy over 0.75V–1.5V at –10°C to +100°C.
What is the purpose of the PMON pin on the ISL78211ARZ?
The PMON pin on the ISL78211ARZ provides an analog voltage output proportional to instantaneous CPU power: VPMON = 35 × (VSEN – RTN) × (VDROOP – VO). This high-bandwidth signal enables real-time power telemetry for thermal management, battery life optimization, and dynamic voltage/frequency scaling - a key differentiator for automotive systems requiring precise power budgeting.
Is the ISL78211ARZ still recommended for new designs?
No - the ISL78211ARZ is marked "NOT RECOMMENDED FOR NEW DESIGNS" in the FN7578 datasheet (Rev 1.00, Dec 2013), with no recommended replacement provided. However, Aetrix Electronics continues to supply ISL78211ARZ for legacy program support, repair, and obsolescence mitigation under controlled lifecycle management protocols.
ISL78211ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Converter, Intel IMVP-6
- Voltage - Input:
- 5V ~ 21V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.3V ~ 1.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL78211ARZ FAQ
1.How can I place an order for ISL78211ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78211ARZ 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 ISL78211ARZ reliable?
The price and inventory of ISL78211ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78211ARZ is usually 5 days.
3.What payment methods are accepted for ISL78211ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78211ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78211ARZ?
ISL78211ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78211ARZ 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 ISL78211ARZ?
For technical support, including ISL78211ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78211ARZ requirements.
6.How does Aetrix verify that ISL78211ARZ is sourced from the original manufacturer or authorized distributors?
All ISL78211ARZ 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 ISL78211ARZ meets industry standards.
7.What is the process for return or replacement of ISL78211ARZ?
All ISL78211ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL78211ARZ, 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 ISL78211ARZ part is unused and in its original packaging.
Return procedure for ISL78211ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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