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Renesas ISL69125IRAZ-T7A
- Part No.:
- ISL69125IRAZ-T7A
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
ISL69125IRAZ-T7A.pdf
- Description:
- IC REG CTRLR INTEL 2OUT 40TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,859
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Product details
Overview
ISL69125IRAZ-T7A from Renesas Electronics is a digital dual-output, 4-phase configurable VR13 PWM controller for Intel microprocessor core and memory rails. It supports flexible phase allocation (e.g., 3+1 or 2+2), operates up to 1 MHz, delivers ±0.5% closed-loop system accuracy via differential remote sensing, and implements Renesas' linear synthetic current modulation for zero-latency current balance.
For engineers reviewing the ISL69125IRAZ-T7A datasheet, ISL69125IRAZ-T7A pinout, ISL69125IRAZ-T7A application, or ISL69125IRAZ-T7A equivalent, key selection considerations include VR13 compliance, PMBus v1.3/SVID interface support, auto phase add/drop behavior, diode emulation capability, and compatibility with ISL99227 60A smart power stages.
Technical Context
The ISL69125IRAZ-T7A implements a proprietary digital linear synthetic current modulation architecture enabling simultaneous high-frequency current balancing and fast transient response without analog compensation. Its dual-edge modulation and pulse-by-pulse phase current limiting are tightly coupled to real-time telemetry via PMBus.
Configuration and fault logging are handled through PowerNavigator™ software, leveraging on-chip NVM storing up to 8 configurations and black box fault recording. The device supports both DCR sense with integrated temperature compensation and external input current sense for NVDIMM applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Dual-output, multiphase (X+Y ≤ 4) VR13-compliant PWM controller |
| Max Switching Frequency | 1 MHz - enables high-density, low-inductance power stage design |
| Voltage Sensing Accuracy | ±0.5% over load/line/temperature - achieved via differential remote sensing |
| Interface Protocol | PMBus v1.3 & SVID - supports dynamic voltage identification (DVID) and telemetry reporting |
| Current Sensing | DCR sense with integrated temperature compensation or external input current sense - ensures accurate load-line regulation and OCP |
| Fault Protection | Peak/average overcurrent, OV/UV on input/output, open-sense detect, configurable CFP flag - enables robust system-level reliability |
| Config Storage | On-chip NVM stores up to 8 complete configurations - eliminates external EEPROM dependency |
Pinout & Package
ISL69125IRAZ-T7A is housed in a 40-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the ISL69125 datasheet Rev. 1.00 (FN8738), including dedicated SVID/PMBus lines, phase control outputs (PH0–PH3), voltage sense inputs (VSxP/VSxN), and fault signaling terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PH0–PH3 | Phase gate drive outputs | Four independent PWM outputs supporting flexible X+Y ≤4 phase assignment across two rails |
| VS1P/VS1N, VS2P/VS2N | Differential remote voltage sense inputs | Enable ±0.5% closed-loop accuracy by rejecting PCB IR drop and noise |
| SVID_DATA, SVID_CLK | Intel SVID interface signals | Allow direct communication with VR13-compliant CPUs for DVID, margining, and status reporting |
| PMBUS_SDA, PMBUS_SCL | PMBus v1.3 interface | Support configuration, telemetry readback, and fault logging at up to 2 MHz bus speed |
| PGOOD1, PGOOD2 | Power-good status outputs | Open-drain signals indicating regulated output stability per rail - configurable timing and fault masking |
| CFP | Catastrophic Failure Protection flag | Asserted on unrecoverable faults (e.g., multiple phase failure, thermal runaway) to trigger system shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Linear synthetic current modulation | Delivers zero-latency current balance across phases without analog loop compensation components |
| Auto phase add/drop | Dynamically enables/disables phases based on load current to maintain peak efficiency across 1–100% load range |
| Diode emulation mode | Disables synchronous rectification at light loads to reduce switching losses and improve sub-10% load efficiency |
| Black box fault recording | Stores timestamped fault conditions (e.g., OCP event, OV latch) in nonvolatile memory for post-failure analysis |
| DCR temperature compensation | Adjusts current sense gain in real time using on-die temperature sensor to maintain OCP accuracy across –40°C to +125°C |
Applications
| Core Rail for Intel Xeon Scalable Processors | DDR4/DDR5 Memory VDDQ Rail |
|---|---|
Use Scenario: High-performance server motherboard powering dual-socket Xeon Scalable CPUs requiring tight voltage tolerance and fast load-step response. IC Role / Device Role / Timing Role: Primary VR13-compliant PWM controller managing up to 4 phases on CPU core rail with SVID handshake and DVID support. Use Value: Enables ±0.5% regulation accuracy and sub-100 ns transient response using synthetic current control-critical for AVX-512 and Turbo Boost workloads. | Use Scenario: Dual-rail memory subsystem in enterprise storage servers where DDR4/DDR5 VDDQ must track VDD within 10 mV under dynamic refresh and burst access. IC Role / Device Role / Timing Role: Secondary output configured as 2-phase regulator synchronized to core rail timing via shared clock domain and PMBus coordination. Use Value: Differential sensing and DCR-based current monitoring ensure matched load-line slope between VDD and VDDQ-reducing signal integrity risk during high-speed data transfer. |
| High-End GPU Core Voltage Rail | NVDIMM Backup Power Sequencing |
Use Scenario: Discrete graphics card supplying GPU core voltage (e.g., 0.7–1.2 V) with aggressive dv/dt demands during shader clock scaling. IC Role / Device Role / Timing Role: Single-output 4-phase configuration (4+0) delivering >400 A with diode braking to suppress overshoot during rapid clock down events. Use Value: Dual-edge modulation and diode braking reduce peak voltage deviation to <15 mV during 100 A/µs load steps-preventing GPU throttling or reset. | Use Scenario: Persistent memory module requiring precise sequencing of backup power (VBackup) relative to main VDD during power-loss events. IC Role / Device Role / Timing Role: Secondary output repurposed as controlled enable sequencer using programmable delay and fault-monitored power-good assertion. Use Value: External input current sense input allows real-time monitoring of supercapacitor discharge current-enabling deterministic save-to-flash timing before VBackup collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VR13-compliant dual-output multiphase controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL69137IRAZ-T7A | Single-output, 6-phase VR13 controller with identical modulation scheme and PowerNavigator support | Not suitable for dual-rail systems; optimized for higher-current single-rail CPU cores | Select when only one high-current rail (e.g., >500 A) is required and dual output is unnecessary |
| RT8803AGQW | Analog dual-output, 4-phase controller with SVID but no PMBus, no NVM, and fixed 2+2 phase assignment | Lacks black box logging, auto phase add/drop, and DCR temperature compensation | Choose for cost-sensitive designs where firmware configurability and advanced telemetry are not required |
Compared with ISL69125IRAZ-T7A, ISL69137IRAZ-T7A offers higher per-rail phase count but no second output, while RT8803AGQW provides basic VR13 functionality without digital configurability or fault diagnostics-making ISL69125IRAZ-T7A optimal for complex, telemetry-driven server and AI accelerator platforms.
Availability
ISL69125IRAZ-T7A is available at Aetrix Electronics and suitable for high-performance server core rails, DDR memory power delivery, GPU voltage regulation, and NVDIMM backup sequencing requiring stable component supply and long-term lifecycle support.
Supply support for ISL69125IRAZ-T7A 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 is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and datacenter applications.
The ISL69125IRAZ-T7A belongs to Renesas' digital multiphase controller product line, engineered specifically for Intel VR13-compliant platforms requiring adaptive phase management, high-accuracy telemetry, and seamless integration with PowerNavigator™.
FAQ
What is the maximum supported switching frequency for the ISL69125IRAZ-T7A?
The ISL69125IRAZ-T7A supports operation up to 1 MHz. This high-frequency capability allows designers to use smaller inductors and capacitors, reducing solution size and improving transient response. The 1 MHz limit applies across all phase configurations (e.g., 4+0, 3+1, 2+2) and is maintained under full load and temperature range per the FN8738 datasheet Rev. 1.00. Frequency selection is digitally programmable via PowerNavigator™ or PMBus commands.
Does the ISL69125IRAZ-T7A support both SVID and PMBus interfaces simultaneously?
Yes, the ISL69125IRAZ-T7A supports concurrent SVID and PMBus v1.3 operation. SVID handles real-time CPU voltage command and status exchange (e.g., DVID, PROCHOT#), while PMBus manages configuration, telemetry readback (voltage, current, temperature), and fault logging. Both interfaces operate independently with separate pins and timing-no arbitration or conflict occurs during simultaneous use in VR13 platform implementations.
Can the ISL69125IRAZ-T7A be used with external MOSFETs instead of smart power stages?
Yes, the ISL69125IRAZ-T7A supports discrete external MOSFETs via gate drive outputs (PH0–PH3) and compatible bootstrap circuitry. While it is validated with ISL99227 60A smart power stages, the controller's gate drive strength (2 A sink/source), programmable dead time, and adaptive shoot-through protection allow robust interfacing with discrete high-side/low-side FET pairs-provided layout follows Renesas' recommended routing and decoupling guidelines in FN8738.
How many configurations can be stored internally in the ISL69125IRAZ-T7A?
The ISL69125IRAZ-T7A includes on-chip nonvolatile memory capable of storing up to 8 complete configurations. Each configuration includes phase assignment, loop compensation parameters, fault thresholds, sequencing delays, and telemetry settings. These are retained across power cycles and can be selected dynamically via PMBus or SVID commands-eliminating need for external EEPROM and simplifying field firmware updates.
What fault protection features are implemented in the ISL69125IRAZ-T7A?
The ISL69125IRAZ-T7A implements comprehensive fault protection including pulse-by-pulse phase current limiting, total output current protection, input/output overvoltage and undervoltage detection, open voltage sense line detection, and configurable Catastrophic Failure Protection (CFP) flag assertion. Fault events are logged in a black box memory with timestamps, and critical flags (e.g., CFP) can be routed to system management controllers for immediate shutdown-ensuring reliability in mission-critical server and AI infrastructure.
ISL69125IRAZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel VR13
- Voltage - Input:
- 4.5V ~ 25V
- Number of Outputs:
- 2
- Voltage - Output:
- 0V ~ 3.05V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (5x5)
ISL69125IRAZ-T7A FAQ
1.How can I place an order for ISL69125IRAZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL69125IRAZ-T7A 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 ISL69125IRAZ-T7A reliable?
The price and inventory of ISL69125IRAZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL69125IRAZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL69125IRAZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL69125IRAZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL69125IRAZ-T7A?
ISL69125IRAZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL69125IRAZ-T7A 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 ISL69125IRAZ-T7A?
For technical support, including ISL69125IRAZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL69125IRAZ-T7A requirements.
6.How does Aetrix verify that ISL69125IRAZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL69125IRAZ-T7A 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 ISL69125IRAZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL69125IRAZ-T7A?
All ISL69125IRAZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL69125IRAZ-T7A, 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 ISL69125IRAZ-T7A part is unused and in its original packaging.
Return procedure for ISL69125IRAZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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