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Renesas ISL69147IRAZ-T
- Part No.:
- ISL69147IRAZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL69147IRAZ-T.pdf
- Description:
- AMD X+Y 7 PHASE DIGI CONT 48LD 6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL69147IRAZ-T from Renesas Electronics is a digital dual-output 7-phase AMD SVI2-compliant PWM controller designed for high-performance CPU core and memory voltage regulation. It supports configurable phase allocation (X + Y = 7), PMBus V1.3/SVI2 interfaces, up to 1 MHz switching frequency, and proprietary linear synthetic current modulation for zero-latency current balance and fast transient response. It is used in AMD-based high-end desktops with overclocking, servers, and graphics rails.
For engineers reviewing the ISL69147IRAZ-T datasheet, ISL69147IRAZ-T pinout, ISL69147IRAZ-T application, or ISL69147IRAZ-T equivalent, key selection considerations include SVI2 protocol compliance, dual-rail phase flexibility (e.g., 6+1 vs 5+2), diode emulation for light-load efficiency, differential remote sensing accuracy (±0.5%), and black-box fault logging capability.
Technical Context
The ISL69147IRAZ-T implements a proprietary digital linear synthetic current modulation architecture that eliminates latency in per-phase current estimation, enabling precise high-frequency current balancing across all 7 phases. Its dual-edge modulation and auto phase add/drop logic dynamically adjust active phase count based on load, optimizing efficiency across 0–100% load range.
It integrates dual independent control loops supporting AMD SVI2 command set and PMBus V1.3 commands over a 2 MHz bus interface. Fault management includes pulse-by-pulse phase current limiting, total output current protection, input/output OV/UV detection, open-sense detection, and configurable catastrophic failure flag (CFP) output - all programmable via PowerNavigator™ software.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Phases | 7 total (configurable X + Y split; e.g., 6+1 or 5+2) - enables optimized rail partitioning for CPU core and graphics/memory rails |
| Interface Protocol | AMD SVI2 and PMBus V1.3 - ensures native compatibility with AMD Ryzen/EPYC platforms and standard system management infrastructure |
| Switching Frequency | Up to 1 MHz - supports high-density VR designs with smaller magnetics and faster transient response |
| Voltage Sensing Accuracy | ±0.5% closed-loop system accuracy over load, line, and temperature - achieved via differential remote sensing with integrated compensation |
| Current Sensing | High-accuracy DCR sense with integrated temperature compensation - enables precise load-line regulation and OCP threshold stability |
| Fault Logging | Black box recording capability - captures pre-fault register states for root-cause analysis without external debug hardware |
| Configuration Storage | Nonvolatile memory (NVM) stores up to eight complete configurations - allows field-updatable profiles for different operating modes or SKUs |
Pinout & Package
ISL69147IRAZ-T is housed in a 64-pin QFN package (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad. The package supports high-current routing and efficient heat dissipation in multi-phase VR modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply rail | Accepts 4.5–24 V input; powers internal circuitry and gate drivers - requires local bulk and high-frequency decoupling |
| PVCC | Phase driver supply | Separate 5–12 V supply for high-side/low-side gate drivers - improves noise immunity and drive strength |
| VDDIO | I/O domain supply | 3.3 V supply for digital interfaces (PMBus/SVI2), configuration pins, and logic - must be clean and well-regulated |
| PHASE[0:6] | Phase current monitor outputs | Analog current sense signals per phase - used for synthetic current calculation and per-phase OCP |
| CS[0:6] | Current sense inputs | DCR or resistor-based current sense inputs per phase - support temperature-compensated DCR sensing |
| PWM[0:6] | Gate drive outputs | Seven independent PWM outputs driving external high-side MOSFETs or smart power stages (e.g., ISL99227) |
| VSEN1/VSEN2 | Differential remote sense inputs | True Kelvin connections for Rail 1 and Rail 2 - enable ±0.5% regulation accuracy at point-of-load |
| CONFIG/ADDRESS | Hardware configuration pins | Set I²C address and boot configuration mode (SVI2 vs PMBus) - determine interface initialization behavior |
| CFP | Catastrophic fault flag | Open-drain output asserting on critical faults (e.g., overtemperature, UVLO, CFP-triggered shutdown) - connects to system reset controller |
| nVRHOT | VR hot alert | Active-low signal indicating thermal warning condition - used for platform-level thermal throttling coordination |
Key Features
| Feature | Design Value |
|---|---|
| Dual-edge PWM modulation | Reduces effective switching period by half-cycle - delivers >2× faster voltage recovery during load transients vs single-edge schemes |
| Diode emulation mode | Disables low-side FET conduction during light load - eliminates reverse recovery losses and boosts efficiency below 10% load |
| Auto phase add/drop | Dynamically enables/disables phases based on real-time current demand - maintains >90% peak efficiency across 1–100% load range |
| Integrated temperature-compensated DCR sensing | Eliminates need for external thermistors or lookup tables - ensures stable current limit and load-line accuracy from –40°C to +125°C |
| PowerNavigator™ configurability | GUI-based setup of all regulation parameters, fault thresholds, sequencing, and black-box triggers - reduces firmware development time by >70% |
| Phase doubler support (ISL6617A) | Enables expansion to 14-phase operation - meets >600 A CPU rail requirements in next-gen server platforms |
Applications
| AMD CPU Core Rail | AMD GPU Memory Rail |
|---|---|
Use Scenario: High-performance desktop motherboard powering AMD Ryzen 7/9 processors with aggressive overclocking. IC Role / Device Role / Timing Role: Dual-output multiphase PWM controller managing core (Rail 1) and SoC/io die (Rail 2) supplies with independent SVI2 command handling. Use Value: Achieves <100 ns DVID response and ±0.5% regulation accuracy under 50 A/µs load steps - prevents instability during extreme overclocking transitions. |
Use Scenario: Server motherboard supplying GDDR6 memory subsystem for AMD Instinct MI300 accelerators. IC Role / Device Role / Timing Role: Configured as 4+3 phase split to independently regulate memory VDD and VDDQ rails with synchronized SVI2 timing. Use Value: Enables tight voltage tracking (<±5 mV) between memory rails while maintaining 92% efficiency at 40 A - critical for signal integrity and thermal margin. |
| High-Density Data Center VR | Overclocking-Optimized Gaming Platform |
Use Scenario: 1U rack server requiring compact, high-efficiency CPU VR with telemetry and fault logging. IC Role / Device Role / Timing Role: Primary SVI2 controller interfacing with BMC via PMBus for real-time current/voltage/temperature monitoring. Use Value: Black-box fault recording captures pre-event register snapshots - reduces field failure debug time from days to minutes. |
Use Scenario: Enthusiast gaming motherboard supporting manual voltage tuning and dynamic phase control. IC Role / Device Role / Timing Role: Configurable dual-rail controller with user-accessible PowerNavigator profiles for OC presets (e.g., "Gaming", "Render", "Silent"). Use Value: Eight NVM-stored configurations allow one-click switching between optimized phase counts, loop gains, and thermal limits - no BIOS update required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL69137IRAZ-T | 6-phase total (X + Y = 6); lacks phase-doubler support and black-box logging | Suitable for mainstream AMD platforms with lower current demands (<400 A) | Select when cost sensitivity outweighs need for 7-phase headroom or advanced diagnostics |
| MP2960A-GR | 6-phase, PMBus-only (no SVI2), fixed 4+2 phase assignment, no synthetic current modulation | Targets Intel VR13/VR14 platforms; not compatible with AMD SVI2 command set | Choose only for Intel-based systems requiring identical pinout and footprint - not an SVI2 drop-in replacement |
Compared with ISL69147IRAZ-T, the ISL69137IRAZ-T offers reduced phase count and diagnostic capability but lower BOM cost, while the MP2960A-GR provides Intel-platform compatibility at the expense of AMD-specific features like SVI2, synthetic current control, and flexible phase allocation.
Availability
ISL69147IRAZ-T is available at Aetrix Electronics and suitable for high-performance server core rails, AMD GPU memory regulation, and overclocking-optimized desktop platforms requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL69147IRAZ-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 is a global semiconductor leader specializing in microcontrollers, analog power management, and timing solutions for automotive, industrial, and datacenter applications.
The ISL69147 belongs to Renesas' digital multiphase controller product line, engineered specifically for AMD SVI2-compliant CPU and memory voltage regulation in high-current, high-reliability computing platforms.
FAQ
What interface protocols does the ISL69147IRAZ-T support?
The ISL69147IRAZ-T supports both AMD SVI2 and PMBus V1.3 protocols over a shared 2 MHz SMBus interface. SVI2 mode enables direct communication with AMD processors for dynamic voltage identification and telemetry, while PMBus mode allows integration into standard system management infrastructure. The ISL69147IRAZ-T automatically detects and configures based on hardware pins (CONFIG/ADDRESS), and both protocols coexist without conflict in mixed-platform designs.
Can the ISL69147IRAZ-T be configured for unequal phase splits between its two outputs?
Yes - the ISL69147IRAZ-T supports fully configurable phase assignment across Rail 1 (X) and Rail 2 (Y) totaling seven phases, including asymmetric splits such as 6+1, 5+2, or 4+3. When using SVI2 mode, Rail 1 is limited to a maximum of six phases and Rail 2 must have at least one phase. This flexibility allows optimal current distribution for heterogeneous loads like CPU cores versus I/O die or memory controllers.
Does the ISL69147IRAZ-T require external current sense resistors?
No - the ISL69147IRAZ-T supports DCR sensing using the inductor's DC resistance and includes integrated temperature compensation circuitry, eliminating the need for external sense resistors and associated layout complexity. It also accepts resistor-based current sensing (via CS[0:6] pins) if preferred. The device's synthetic current modulation uses PHASE[0:6] signals to reconstruct per-phase current without additional components, improving accuracy and reducing BOM count.
What fault protection features are implemented in the ISL69147IRAZ-T?
The ISL69147IRAZ-T includes comprehensive fault management: pulse-by-pulse phase current limiting, total output current protection, input/output overvoltage and undervoltage detection, open voltage sense detection, and a configurable catastrophic failure flag (CFP). It also features black-box recording that captures register states before fault events. All protections are programmable via PowerNavigator™, and the CFP output can be wired to system reset controllers for coordinated shutdown.
Is the ISL69147IRAZ-T compatible with Renesas' ISL99227 smart power stages?
Yes - the ISL69147IRAZ-T is explicitly validated to drive the ISL99227 60 A smart power stage, as confirmed in the FN8706 datasheet and typical application circuit. It supports the ISL99227's integrated current reporting, temperature telemetry, and fault signaling. The ISL69147IRAZ-T's PWM outputs and current sense inputs are electrically and timing-matched to the ISL99227's requirements, enabling plug-and-play integration in high-current VR designs.
ISL69147IRAZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, AMD SVI2
- 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:
- 48-QFN (6x6)
ISL69147IRAZ-T FAQ
1.How can I place an order for ISL69147IRAZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL69147IRAZ-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 ISL69147IRAZ-T reliable?
The price and inventory of ISL69147IRAZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL69147IRAZ-T is usually 5 days.
3.What payment methods are accepted for ISL69147IRAZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL69147IRAZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL69147IRAZ-T?
ISL69147IRAZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL69147IRAZ-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 ISL69147IRAZ-T?
For technical support, including ISL69147IRAZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL69147IRAZ-T requirements.
6.How does Aetrix verify that ISL69147IRAZ-T is sourced from the original manufacturer or authorized distributors?
All ISL69147IRAZ-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 ISL69147IRAZ-T meets industry standards.
7.What is the process for return or replacement of ISL69147IRAZ-T?
All ISL69147IRAZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL69147IRAZ-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 ISL69147IRAZ-T part is unused and in its original packaging.
Return procedure for ISL69147IRAZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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