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Renesas ISL95813HRZ-T
- Part No.:
- ISL95813HRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
ISL95813HRZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
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Product details
Overview
ISL95813HRZ-T from Renesas (formerly Intersil) is a single-phase VR12.6 core controller IC for Intel microprocessor voltage regulation, featuring R3™ PWM control, 4.6V–25V input range, digitally selectable switching frequencies (425/550/700kHz), DCR current sensing with single NTC thermal compensation, and VRHOT# thermal alert output. It delivers tightly regulated CPU core voltage in notebook and ultrabook platforms.
For engineers reviewing the ISL95813HRZ-T datasheet, ISL95813HRZ-T pinout, ISL95813HRZ-T application, or ISL95813HRZ-T equivalent, key selection criteria include VR12.6 compliance, R3™ transient response performance, IMON current monitoring with temperature compensation, VRHOT# fault signaling, and 20-pin 3mm×4mm QFN package integration with differential remote sensing.
Technical Context
The ISL95813HRZ-T implements Intersil's Robust Ripple Regulator R3™ topology, enabling variable-frequency PWM with natural period stretching in Discontinuous Conduction Mode (DCM) to improve light-load efficiency. Its serial bus interface supports real-time bidirectional communication with Intel CPUs for dynamic voltage programming and telemetry feedback including load current and VR temperature.
It integrates differential remote voltage feedback, programmable boot voltage, IMAX/TMAX limits, voltage transition slew rate, and dual current-sensing options-DCR-based with single NTC compensation or discrete resistor-based-enabling precise thermal-aware power delivery across VR12.6-compliant CPU power states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.6V to 25V - supports wide-input DC-DC conversion from battery or adapter rails in mobile computing platforms. |
| VR Standard Compliance | VR12.6 - fully compliant with Intel's voltage regulator specification for 3rd–5th gen Core processors and later. |
| Switching Frequency Options | 425kHz / 550kHz / 700kHz with ECO/PRO modes - enables trade-off between efficiency (ECO) and transient response (PRO) without hardware change. |
| Current Sensing Method | DCR sensing with single NTC compensation - eliminates sense resistors while maintaining ±3% current accuracy over temperature. |
| Thermal Alert Output | VRHOT# open-drain signal - asserts low when internal VR temperature exceeds TMAX, triggering CPU thermal throttling or shutdown. |
| Package | 20-lead 3mm × 4mm QFN with exposed thermal pad - enables high-power density layout and efficient heat dissipation in thin form factors. |
| Interface Protocol | Serial bus (SCLK/SDA/ALERT#) - provides bidirectional communication with CPU for dynamic VID updates and real-time telemetry reporting. |
Pinout & Package
Package: 20-lead 3mm × 4mm QFN with exposed thermal pad (E-PAD connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 16, 15, 14, 13, 11, 12, 7, 8, 9, 10, 20, 19, 18, 17 | E-PAD (GND) | Thermal and electrical ground reference; must be soldered to PCB ground plane for thermal performance and noise immunity. |
| VRHOT# | Thermal alert output | Open-drain active-low signal indicating VR overtemperature condition per programmed TMAX threshold. |
| NTC | NTC thermistor input | Analog input for single NTC sensor used in DCR current sensing temperature compensation. |
| VR_ON | Enable control input | Active-high logic input enabling VR operation; tied high via pull-up for default enable behavior. |
| IMON | Current monitor output | Analog voltage proportional to load current (typically 10mV/A), used for system-level current telemetry. |
| PGOOD | Power-good status output | Open-drain signal asserting high when output voltage is within ±5% of target and all faults are cleared. |
| COMP | Error amplifier compensation | Connects external RC network to set loop stability and transient response characteristics. |
| FB | Differential remote sense input (+) | Positive input of error amplifier; connects to CPU VCCP sense point for accurate regulation at load. |
| RTN | Differential remote sense input (−) | Negative input of error amplifier; connects to CPU VSSP sense point to reject IR drop in PCB traces. |
| ISUMN / ISUMP | DCR current sense inputs | Differential inputs measuring voltage across inductor DCR for lossless current sensing. |
| LG / PHASE / UG / BOOT / VCC | Gate drive and power supply | Drive high-side/low-side MOSFETs; BOOT supplies floating gate drive for high-side FET; VCC powers internal circuitry. |
| PGRM1 / PGRM2 / SCLK / SDA / ALERT# | Serial configuration interface | Two-programmable pins plus I²C-compatible bus (SCLK/SDA) and interrupt-capable ALERT# for VID and parameter programming. |
| LOUT / COUT | Output filter connection | Direct connection points to output inductor (LOUT) and bulk capacitor (COUT) for minimal loop inductance. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ PWM control architecture | Delivers sub-1µs transient response and stable operation across all VR12.6 power state transitions (C0–C6), reducing output capacitance requirements by up to 30%. |
| Dual current sensing support | Enables design flexibility: DCR sensing with single NTC compensation (no sense resistor) or discrete resistor sensing (for higher accuracy in high-current designs). |
| Programmable voltage transition slew rate | Allows dynamic adjustment of VID step ramp rate to meet CPU-specific slew requirements and minimize overshoot during state changes. |
| VRHOT# thermal protection | Provides hardware-level thermal fault signaling independent of serial bus communication, ensuring fail-safe CPU protection under thermal stress. |
| Differential remote voltage sensing | Rejects up to 150mV of IR drop in power delivery path, maintaining ±0.5% output regulation accuracy at CPU die. |
Applications
| Notebook Power Regulation | Ultrabook Core VR |
|---|---|
Use Scenario: Primary CPU core voltage regulation in 13–15 inch clamshell notebooks with Intel Core i5/i7 processors and dual-battery operation. IC Role / Device Role / Timing Role: Single-phase VR12.6 core controller managing 0.5–1.5V output, real-time VID updates, and thermal telemetry via serial bus. Use Value: Enables <1% output voltage deviation under 20A load steps and supports Intel's adaptive voltage positioning (AVP) for optimized power/performance balance. | Use Scenario: Slim-profile ultrabook platform requiring high-efficiency, low-noise CPU power delivery with aggressive thermal constraints. IC Role / Device Role / Timing Role: Core VR controller implementing DCM mode at light loads and R3™ fast transient recovery for burst workloads. Use Value: Achieves >90% efficiency at 10% load via natural frequency scaling and reduces solution footprint by supporting 3mm×4mm QFN and low-ESR ceramic output capacitors. |
| Tablet SoC Power | All-in-One Desktop VR |
Use Scenario: High-density tablet motherboard where space and thermal headroom limit use of multi-phase controllers. IC Role / Device Role / Timing Role: Single-phase VR12.6 controller delivering regulated core voltage to Intel Atom or Core M-series SoCs with integrated graphics. Use Value: Supports dynamic frequency scaling (DFS) and deep C-state entry via programmable IMAX/TMAX and VRHOT# coordination with SoC thermal management firmware. | Use Scenario: AIO desktop with compact power delivery board needing robust VR12.6 compliance for quad-core desktop CPUs. IC Role / Device Role / Timing Role: Standalone core controller interfacing with CPU through dedicated SVID bus, providing PGOOD, VRHOT#, and IMON signals to system EC. Use Value: Eliminates need for external current-sense amplifiers and simplifies layout with integrated differential sensing and thermal compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VR12.6 core controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95815HRZ-T | Two-phase VR12.6 controller with identical pinout, same R3™ architecture, but supports up to 60A total output via phase interleaving. | Required for higher-current CPU platforms (e.g., quad-core desktop CPUs or high-TDP mobile CPUs) where single-phase current capability is insufficient. | Select ISL95815HRZ-T when output current exceeds 40A or when lower ripple and improved thermal distribution are needed. |
| RTQ2134BGQW | Single-phase VR12.6 controller with integrated MOSFET drivers only (no power FETs); supports 4.5–26V input, but lacks VRHOT# and IMON analog output. | Suitable for cost-sensitive designs where CPU thermal telemetry is handled externally, and discrete current sensing is acceptable. | Choose RTQ2134BGQW when system-level thermal monitoring is already implemented and VRHOT#/IMON are not required for firmware control. |
Compared with ISL95813HRZ-T, ISL95815HRZ-T scales current capacity via dual-phase operation while retaining full feature parity, whereas RTQ2134BGQW reduces BOM count but sacrifices integrated thermal/current telemetry-making ISL95813HRZ-T optimal for designs requiring self-contained VR12.6 compliance with full CPU telemetry.
Availability
ISL95813HRZ-T is available at Aetrix Electronics and suitable for notebook computers, ultrabooks, and tablet platforms requiring stable component supply, VR12.6 compliance, and integrated thermal/current telemetry.
Supply support for ISL95813HRZ-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 (formerly Intersil) is a global semiconductor leader specializing in analog, power, and embedded processing solutions, with ISO 9001-certified manufacturing and broad automotive/industrial/computing product lines.
The ISL95813HRZ-T belongs to Renesas' VR12.x core controller family, engineered specifically for Intel CPU voltage regulation in mobile computing systems where fast transient response, thermal awareness, and serial telemetry are mandatory.
FAQ
What is the primary function of the ISL95813HRZ-T in a CPU power delivery system?
The ISL95813HRZ-T serves as a single-phase VR12.6-compliant core voltage regulator controller, generating precisely regulated CPU core voltage (0.5–1.5V) using R3™ PWM control. It interfaces directly with Intel CPUs via serial bus to receive dynamic VID commands and report real-time load current and VR temperature-ensuring full compliance with VR12.6 specification requirements in the ISL95813HRZ-T design.
Does the ISL95813HRZ-T support both DCR and discrete resistor current sensing?
Yes, the ISL95813HRZ-T supports dual current sensing methods: DCR sensing using the ISUMN/ISUMP pins with single NTC compensation on the NTC pin, and discrete resistor sensing using the same pins with external sense resistors. This flexibility allows designers to optimize for cost (DCR) or accuracy (resistor) without changing the ISL95813HRZ-T controller IC or layout.
What is the role of the VRHOT# pin on the ISL95813HRZ-T?
The VRHOT# pin on the ISL95813HRZ-T is an open-drain thermal alert output that asserts low when the internal VR temperature exceeds the user-programmed TMAX threshold. It operates independently of the serial bus and provides hardware-level fault signaling to the CPU or system EC, enabling immediate thermal throttling or shutdown-critical for reliable operation in thermally constrained ISL95813HRZ-T implementations.
Can the ISL95813HRZ-T operate in discontinuous conduction mode (DCM) for light-load efficiency?
Yes, the ISL95813HRZ-T implements enhanced light-load efficiency via natural period stretching in Discontinuous Conduction Mode (DCM), enabled by its variable-frequency R3™ topology. This reduces switching losses at light loads without requiring external mode-control circuitry, directly improving system-level efficiency in idle or low-utilization states of the ISL95813HRZ-T-powered platform.
What package type and size does the ISL95813HRZ-T use, and why is it significant?
The ISL95813HRZ-T uses a 20-lead 3mm × 4mm QFN package with exposed thermal pad (E-PAD). Its compact size enables high-density layout in space-constrained mobile platforms like ultrabooks and tablets, while the E-PAD ensures effective thermal transfer to the PCB ground plane-critical for sustaining 40A peak output current in the ISL95813HRZ-T without thermal derating.
ISL95813HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR12.6
- Voltage - Input:
- 4.6V ~ 25V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 2.3V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
ISL95813HRZ-T FAQ
1.How can I place an order for ISL95813HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95813HRZ-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 ISL95813HRZ-T reliable?
The price and inventory of ISL95813HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95813HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL95813HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95813HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95813HRZ-T?
ISL95813HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95813HRZ-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 ISL95813HRZ-T?
For technical support, including ISL95813HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95813HRZ-T requirements.
6.How does Aetrix verify that ISL95813HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL95813HRZ-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 ISL95813HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL95813HRZ-T?
All ISL95813HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL95813HRZ-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 ISL95813HRZ-T part is unused and in its original packaging.
Return procedure for ISL95813HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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