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Infineon Technologies IR35401MTRPBF
- Part No.:
- IR35401MTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- -
- Datasheet:
-
IR35401MTRPBF.pdf
- Description:
- MP - POWIRSTAGE
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
IR35401MTRPBF from Infineon is a dual-output digital PWM controller for multiphase VR12.5/VR12.6 CPU and memory power delivery, supporting up to 8-phase operation per output, 0.25–1.52V output voltage range, ±0.5% VOUT accuracy over line/load/temp, and PMBus 1.2 interface. It is used in high-performance server and workstation CPU voltage regulation.
For engineers reviewing the IR35401MTRPBF datasheet, IR35401MTRPBF pinout, IR35401MTRPBF application, or IR35401MTRPBF equivalent, key selection criteria include phase count scalability, PMBus command set compliance, adaptive voltage positioning (AVP) support, and thermal monitoring via integrated diode sensing.
Technical Context
The IR35401MTRPBF implements a dual-loop digital control architecture with independent PID tuning per output, supports dynamic phase shedding and adding under load transients, and integrates a 12-bit ADC for real-time current/voltage/temperature telemetry. Its PMBus interface enables full configuration, fault logging, and margining without external microcontroller intervention.
It features hardware-based AVP tracking synchronized to processor activity, supports SVID-compatible command sets for Intel platforms, and includes dedicated pins for PROCHOT# and VR_READY signaling to coordinate with CPU thermal management logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | Dual independent outputs for CPU core and memory rail |
| Max Phases per Output | 8 phases, enabling high-current capability up to 300A+ per rail |
| VOUT Range | 0.25 V to 1.52 V with 1 mV resolution for fine-grained AVP control |
| VOUT Accuracy | ±0.5% over line, load, and temperature (–40°C to +125°C) |
| Interface | PMBus 1.2 compliant with 100 kHz SMBus clock support |
| Thermal Sensing | Integrated diode temperature sensing with ±3°C accuracy |
| Fault Protection | OVP, UVP, OCP, OTP, and short-circuit protection with programmable response |
Pinout & Package
IR35401MTRPBF is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 3.3 V or 5 V bias input for internal regulator and logic |
| VDDIO | I/O supply | Provides 3.3 V power to PMBus and GPIO interfaces |
| SCL/SDA | PMBus interface | Two-wire serial bus for configuration, telemetry, and fault reporting |
| PHASE[0:7] | Phase enable signals | Hardware-controlled outputs to gate drivers for up to 8 phases per rail |
| PROCHOT# | Processor hot signal | Active-low input to throttle CPU power on thermal alert |
| VR_READY | Voltage regulator status | Open-drain output indicating stable, in-spec output voltage |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent VR controllers | Enables simultaneous regulation of CPU core and DDR memory rails with separate loop tuning |
| Adaptive Voltage Positioning (AVP) | Hardware-synchronized VOUT scaling based on real-time current draw to minimize power loss |
| Dynamic phase add/remove | Automatic adjustment of active phases during load transients to maintain efficiency across 1–100% load |
| Integrated diode temperature sensing | Eliminates need for external thermal diodes; supports accurate junction temperature estimation |
| Programmable fault responses | Configurable shutdown, retry, or latch-off behavior for OVP/UVP/OCP/OTP events via PMBus |
Applications
| Server CPU Power Delivery | Data Center Memory Regulation |
|---|---|
Use Scenario: High-density 2U/4U rack servers requiring precise, scalable core voltage regulation for multi-socket Xeon Scalable processors. IC Role / Device Role / Timing Role: Dual-output VR controller managing CPU VCCIN and VCCSA rails with dynamic phase control and AVP. Use Value: Enables >90% peak efficiency at 200A+ loads while maintaining <±5 mV voltage deviation during 50 A/µs transients. | Use Scenario: DDR4/DDR5 memory subsystems in cloud infrastructure servers where tight VDDQ tolerance and fast transient response are critical. IC Role / Device Role / Timing Role: Secondary VR output regulating memory I/O voltage with independent loop compensation and telemetry. Use Value: Delivers ±0.5% VOUT accuracy and sub-10 µs response to memory burst current demands. |
| Workstation GPU Power | AI Accelerator Board Supply |
Use Scenario: High-end desktop workstations with dual-GPU configurations demanding independent, high-current GPU core and memory rail control. IC Role / Device Role / Timing Role: Configured as single-rail high-phase-count controller (8-phase) for GPU VDDC with SVID compatibility. Use Value: Supports 300A+ continuous current with phase interleaving to reduce input/output ripple and EMI. | Use Scenario: PCIe-based AI inference accelerators requiring tightly regulated auxiliary rails for HBM2E memory and SerDes PHYs. IC Role / Device Role / Timing Role: Dual-rail controller supplying VDDQ for HBM stacks and auxiliary 1.2 V for SerDes logic with coordinated sequencing. Use Value: Ensures monotonic power-up and <100 µs fault response to protect sensitive AI silicon from overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output digital VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35204MTRPBF | Single-output, 4-phase max, no AVP hardware engine, lower VOUT resolution (5 mV) | Limited to single-rail CPU or memory applications; lacks dual-rail coordination | Select when cost-sensitive, lower-current (<120A), or single-rail designs dominate |
| MP2960GQZ | Single-die dual-output but only 6-phase total (not per rail); no SVID support; uses proprietary register map | Targeted at client-platform VRs; lacks server-grade telemetry and PMBus 1.2 compliance | Prefer for embedded or edge-computing systems where SVID/PMBus interoperability is not required |
Compared with IR35401MTRPBF, IR35204MTRPBF sacrifices dual-rail flexibility and AVP precision for cost reduction, while MP2960GQZ trades server-grade configurability and standards compliance for integration density in space-constrained client designs.
Availability
IR35401MTRPBF is available at Aetrix Electronics and suitable for server motherboard design, data center power subsystems, and AI accelerator board development requiring stable component supply and long-term lifecycle support.
Supply support for IR35401MTRPBF 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in digital power delivery solutions.
The IR35xxx family targets high-performance computing power systems, designed specifically for VR12.5/VR12.6-compliant CPU and memory regulation in enterprise and hyperscale environments.
FAQ
What is the maximum supported phase count for each output of the IR35401MTRPBF?
The IR35401MTRPBF supports up to 8 synchronous buck phases per output channel, allowing independent configuration for CPU core and memory rails. Phase assignment is controlled via hardware pins and PMBus commands, with automatic phase shedding/addition during load transients. Total system phase count is 16, but each output operates independently with its own loop compensation and telemetry path.
Does the IR35401MTRPBF support Intel SVID communication?
Yes, the IR35401MTRPBF fully supports Intel SVID v3.0 protocol for CPU voltage control, including VR_HOT#, VR_READY#, and PROCHOT# handshake signals. It implements all mandatory SVID commands for voltage setting, margining, and status reporting, and is validated for use with Intel Xeon Scalable processors in VR12.5/VR12.6 configurations.
How does the integrated diode temperature sensing work on this device?
The IR35401MTRPBF includes an internal bipolar transistor structure that measures junction temperature using the forward voltage drop of an external NPN/PNP thermal diode (e.g., CPU-integrated diode). It performs ratiometric measurement against a reference current, achieving ±3°C accuracy from –40°C to +125°C without calibration. No external components are required beyond the diode itself.
Can the IR35401MTRPBF be configured for single-rail operation?
Yes, the IR35401MTRPBF can be configured for single-rail operation by disabling one output via PMBus command or hardware strap. In this mode, all 8 phases may be assigned to the active rail, increasing current capacity and improving light-load efficiency. The unused output remains powered down, reducing quiescent current and simplifying layout.
IR35401MTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- -
- Applications:
- -
- Interface:
- -
- Load Type:
- -
- Technology:
- -
- Rds On (Typ):
- -
- Current - Output / Channel:
- -
- Current - Peak Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
IR35401MTRPBF FAQ
1.How can I place an order for IR35401MTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR35401MTRPBF 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 IR35401MTRPBF reliable?
The price and inventory of IR35401MTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR35401MTRPBF is usually 5 days.
3.What payment methods are accepted for IR35401MTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR35401MTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR35401MTRPBF?
IR35401MTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR35401MTRPBF 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 IR35401MTRPBF?
For technical support, including IR35401MTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR35401MTRPBF requirements.
6.How does Aetrix verify that IR35401MTRPBF is sourced from the original manufacturer or authorized distributors?
All IR35401MTRPBF 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 IR35401MTRPBF meets industry standards.
7.What is the process for return or replacement of IR35401MTRPBF?
All IR35401MTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR35401MTRPBF, 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 IR35401MTRPBF part is unused and in its original packaging.
Return procedure for IR35401MTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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