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Renesas ISL68127IRAZ-T
- Part No.:
- ISL68127IRAZ-T
- Manufacturer:
- Renesas
- Category:
- Power Supply Controllers, Monitors
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL68127IRAZ-T.pdf
- Description:
- IC PWM CONTROLLER PMBUS 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,648
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Product details
Overview
ISL68127IRAZ-T from Renesas is a digital dual-output, 7-phase configurable PWM controller supporting PMBus V1.3, designed for high-efficiency point-of-load regulation in server and telecom VRMs. It delivers ±0.5% closed-loop system accuracy via differential remote sensing, supports flexible phase configurations (e.g., 6+1, 5+2, 4+3), and enables zero-latency synthetic current control with dual-edge modulation for fast transient response in FPGA/ASIC power delivery.
For engineers reviewing the ISL68127IRAZ-T datasheet, ISL68127IRAZ-T pinout, ISL68127IRAZ-T application, or ISL68127IRAZ-T equivalent, this page provides verified specifications, validated pin functions, confirmed multiphase configuration modes, real-world telemetry capabilities (VIN/VOUT/IOUT/power/temperature), and direct alternative options for server VRM design and migration.
Technical Context
The ISL68127IRAZ-T implements Renesas' proprietary linear synthetic digital current modulation, eliminating latency in current feedback loops to achieve superior HF current balance across phases. Its dual-edge PWM modulation enables sub-100ns response to load transients, while the integrated 7-phase phase manager dynamically adds/drops phases based on real-time load current thresholds programmed via PowerNavigator.
It integrates a full PMBus V1.3 interface with up to 1MHz SCL frequency, supporting telemetry registers for input/output voltage, current, power, temperature, and fault status. The device uses on-chip NVM to store up to eight user-configured profiles, selected at boot via CONFIG pin strapping - enabling rapid deployment of multiple VRM configurations without firmware changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phase Configuration | X+Y ≤ 7 (e.g., 6+1, 5+2, 4+3, 7+0); supports DCR, resistor, and smart power stage current sensing |
| Output Voltage Range | 0.25V to 3.05V; ±0.5% set-point accuracy over load/line/temp for 0.8–3.05V range |
| Switching Frequency | 200kHz to 1000kHz; ±4% accuracy at 500kHz; programmable per output |
| Voltage Sensing | Differential remote sensing (VSENx/RGNDx); enables ±0.5% closed-loop system accuracy |
| PMBus Interface | V1.3 compliant; supports VIN, VOUT, IOUT, power IN/OUT, temperature, and fault telemetry at up to 1MHz |
| Thermal Monitoring | Two TMON inputs (TMON0/TMON1); -50°C to +150°C range; ±4.5°C accuracy |
| Supply & Power | VCC = 3.3V ±5%; VCCS = 1.25V LDO; 90.5mA nominal supply current; 11.4mA shutdown current |
Pinout & Package
ISL68127IRAZ-T is housed in a RoHS-compliant 48-lead 6×6 mm QFN package (PKG DWG # L48.6x6B) with exposed thermal pad (EPAD) connected to GND. Pin layout supports dual-output multiphase VRM implementation with dedicated PWM, current sense, voltage sense, and PMBus interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM[6:0] | PWM output drivers | Seven 3.3V logic-compatible outputs driving smart power stages or DrMOS; support phase-doubler expansion to 14-phase |
| CS[6:0]/CSRTN[6:0] | Current sense inputs | Differential inputs for per-phase current monitoring; compatible with ISL99227 SPS, DCR, or discrete resistor sensing |
| VSEN0/RGND0 & VSEN1/RGND1 | Differential voltage sense | Remote sensing inputs for Output 0 and Output 1; enable ±0.5% closed-loop accuracy under load/line/temp variation |
| SCL/SDA/SALRT | PMBus interface | Standard SMBus-compatible bus interface; supports telemetry read/write, fault logging, and configuration updates at up to 1MHz |
| EN0/EN1 | Output enable controls | Active-high digital enables for Output 0 and Output 1; allow independent sequencing and power-down |
| PG0/PG1 | Power-good indicators | Open-drain outputs signaling valid regulation; pulled low during OV/UV/fault conditions; max pull-up = VCC |
Key Features
| Feature | Design Value |
|---|---|
| Linear synthetic digital current modulation | Zero-latency current feedback ensures precise per-phase current balance and eliminates need for analog compensation tuning |
| Auto phase add/drop | User-programmable thresholds via PowerNavigator enable optimal efficiency across full load range (e.g., 7-phase at full load → 1-phase at light load) |
| Dual-edge PWM modulation | Enables fastest possible transient response (<100ns) by updating both rising and falling edges each cycle |
| On-chip NVM storage | Stores up to eight complete configurations (including phase assignment, OCP, droop, telemetry settings) for immediate boot-time selection |
| Comprehensive fault management | Includes pulse-by-pulse OCP, total output current protection, OV/UV, open-sense detect, and black-box fault recording |
Applications
| Server CPU Core VRM | AI Accelerator Memory Supply |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon Scalable processors with dynamic load steps exceeding 100A/µs. IC Role / Device Role / Timing Role: Dual-output 6+1 phase controller managing CPU VDD and VDDQ rails with independent sequencing and telemetry. Use Value: Achieves <1% voltage deviation during 100A/µs load transients using zero-latency synthetic current control and dual-edge modulation. | Use Scenario: Powering HBM2E stacks on AI training accelerators requiring tight voltage tolerance and thermal-aware current limiting. IC Role / Device Role / Timing Role: 4+3 phase configuration delivering 1.2V/300A to memory subsystem with differential remote sensing and TMON1-based thermal derating. Use Value: Maintains ±0.5% closed-loop accuracy across -40°C to +85°C ambient and enables automatic phase reduction when memory junction temp exceeds 105°C. |
| Telecom Baseband Unit | High-Density Storage Controller |
Use Scenario: Providing tightly regulated 0.85V/120A to FPGA-based baseband processing units in 5G macro cells. IC Role / Device Role / Timing Role: 5+2 phase controller with DCR current sensing and PMBus telemetry for real-time power optimization and predictive maintenance. Use Value: Enables dynamic phase reconfiguration via PMBus command to match varying channel processing loads, reducing idle power by 35%. | Use Scenario: Delivering 1.8V/80A to NVMe SSD controllers in hyperscale data center storage shelves. IC Role / Device Role / Timing Role: Single-output 7+0 phase mode powering controller SoC with diode braking to suppress overshoot during hot-plug events. Use Value: Diode braking reduces VOUT overshoot by 40% during sudden load removal, preventing controller brownout and improving system reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL68137IRAZ-T | Supports AVSBus in addition to PMBus V1.3; identical 7-phase capability and pinout | Required for AVS-enabled processors (e.g., Intel VR12.5/VR13); not needed for standard VR12/VR14 systems | Select ISL68137IRAZ-T only if AVSBus dynamic voltage scaling is required; otherwise ISL68127IRAZ-T offers lower cost and same VRM performance. |
| MP2960AGU-Z | 6-phase max (not 7); supports PMBus V1.2 (not V1.3); no black-box fault logging or synthetic current modulation | Suitable for mid-tier servers or storage where 7-phase headroom and advanced telemetry are not critical | Choose MP2960AGU-Z for cost-sensitive designs with ≤6-phase needs and legacy PMBus compatibility; avoid for high-transient AI/telecom workloads. |
Compared with ISL68137IRAZ-T, ISL68127IRAZ-T omits AVSBus but retains full PMBus V1.3 telemetry and synthetic current control - making it optimal for VR12/VR14 systems without AVS. Versus MP2960AGU-Z, ISL68127IRAZ-T adds one phase, V1.3 compliance, black-box logging, and zero-latency current sensing - essential for high-reliability, high-transient server VRMs.
Availability
ISL68127IRAZ-T is available at Aetrix Electronics and suitable for networking equipment, telecom infrastructure, and server/storage power supply designs requiring stable component supply, long-term lifecycle support, and traceable sourcing for volume production.
Supply support for ISL68127IRAZ-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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in power management ICs.
The ISL68127 product line targets high-performance digital multiphase VRMs for datacenter CPUs, GPUs, FPGAs, and ASICs - emphasizing configurability, telemetry-rich PMBus control, and transient-optimized modulation architecture.
FAQ
What phase configurations does the ISL68127IRAZ-T support?
The ISL68127IRAZ-T supports all X+Y ≤ 7 dual-output configurations including 6+1, 5+2, 4+3, 3+3, and single-output 7+0. It also allows operation with fewer than seven total phases (e.g., 3+2). Configuration is performed via Renesas PowerNavigator GUI and stored in on-chip NVM, enabling flexible deployment across diverse VRM topologies without hardware changes. Each ISL68127IRAZ-T unit retains its configured phase map across power cycles.
Does the ISL68127IRAZ-T support both DCR and smart power stage current sensing?
Yes, the ISL68127IRAZ-T supports three current sensing methods: smart power stage (e.g., ISL99227), discrete DCR networks with integrated temperature compensation, and external current-sense resistors. The CS/CSRTN pins accept differential inputs, and internal amplifiers auto-adapt gain and offset based on selected method. This flexibility allows designers to optimize for cost (resistor), integration (SPS), or precision (DCR+temp-comp), all within the same ISL68127IRAZ-T footprint and firmware flow.
How does the ISL68127IRAZ-T achieve ±0.5% closed-loop system accuracy?
The ISL68127IRAZ-T achieves ±0.5% closed-loop system accuracy through differential remote voltage sensing (VSEN0/RGND0 and VSEN1/RGND1), which compensates for PCB IR drop, combined with highly accurate internal ADCs (±0.5% for VOUT, ±2.5% for VIN, ±2% for ISEN) and digital droop programming with 0.01mV/A resolution. This accuracy is guaranteed across -40°C to +85°C ambient, full load range, and line voltage variation - verified in typical applications using ISL99227 smart power stages and proper layout practices per Renesas AN1705.
What telemetry data can be read from the ISL68127IRAZ-T via PMBus?
The ISL68127IRAZ-T supports full PMBus V1.3 telemetry including real-time VIN, VOUT, IOUT, input/output power, die temperature (via TMON0/TMON1), and comprehensive fault status (OV/UV, OCP, thermal warning, open-sense detect). All values are accessible via standard PMBus commands (READ_VIN, READ_VOUT, READ_IOUT, etc.) at up to 1MHz bus speed. Telemetry is continuously updated and logged in black-box memory upon fault occurrence - enabling root-cause analysis without external instrumentation. Each ISL68127IRAZ-T reports unique telemetry per configured output.
Can the ISL68127IRAZ-T operate without external microcontroller or host processor intervention?
Yes, the ISL68127IRAZ-T operates autonomously after initial configuration. Its on-chip NVM stores all settings - including phase count, OCP thresholds, droop coefficients, and PMBus address - and applies them at power-on. EN0/EN1 pins provide simple GPIO-based enable control, while PG0/PG1 deliver hardware power-good signals. No host processor is required for basic regulation; PMBus interaction is optional for monitoring, reconfiguration, or fault logging. This makes ISL68127IRAZ-T suitable for standalone VRMs in space-constrained or cost-sensitive systems where host resources are limited.
ISL68127IRAZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- -
- Voltage - Input:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (6x6)
ISL68127IRAZ-T FAQ
1.How can I place an order for ISL68127IRAZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL68127IRAZ-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 ISL68127IRAZ-T reliable?
The price and inventory of ISL68127IRAZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL68127IRAZ-T is usually 5 days.
3.What payment methods are accepted for ISL68127IRAZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL68127IRAZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL68127IRAZ-T?
ISL68127IRAZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL68127IRAZ-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 ISL68127IRAZ-T?
For technical support, including ISL68127IRAZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL68127IRAZ-T requirements.
6.How does Aetrix verify that ISL68127IRAZ-T is sourced from the original manufacturer or authorized distributors?
All ISL68127IRAZ-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 ISL68127IRAZ-T meets industry standards.
7.What is the process for return or replacement of ISL68127IRAZ-T?
All ISL68127IRAZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL68127IRAZ-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 ISL68127IRAZ-T part is unused and in its original packaging.
Return procedure for ISL68127IRAZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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