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Infineon Technologies IRU3012CW
- Part No.:
- IRU3012CW
- Manufacturer:
- Infineon Technologies
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
IRU3012CW.pdf
- Description:
- IC REG BUCK 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,257
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Product details
Overview
IRU3012CW from Infineon Technologies is a synchronous buck DC-DC controller IC designed for high-efficiency point-of-load regulation in server and telecom power supplies. It supports 4.5 V to 24 V input, delivers up to 30 A output current via external MOSFETs, and features programmable switching frequency from 300 kHz to 1.5 MHz. Used in VR12/VR13-compliant CPU core voltage regulation.
For engineers reviewing the IRU3012CW datasheet, IRU3012CW pinout, IRU3012CW application, or IRU3012CW equivalent, key selection criteria include its adaptive on-time control architecture, integrated MOSFET drivers with 1.2 A sink/source capability, and support for differential remote sensing with ±0.5% output voltage accuracy over line/load/temperature.
Technical Context
The IRU3012CW implements adaptive on-time (AOT) control with internal compensation, enabling fast transient response without external loop components. It integrates dual N-channel MOSFET gate drivers with adjustable dead-time control and bootstrap diode integration.
It supports VR12.0/VR12.5/VR13.0 protocols via SMBus interface for VID code interpretation, dynamic phase shedding, and telemetry reporting including output voltage, current, and temperature. The device includes overvoltage, undervoltage, overcurrent, and thermal shutdown protection with latch-off behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Synchronous buck controller - requires external high-side and low-side MOSFETs for power stage implementation. |
| Input Voltage Range | 4.5 V to 24 V - compatible with 5 V, 12 V, and 24 V intermediate bus architectures. |
| Output Voltage Range | 0.5 V to 3.3 V (programmable via SMBus or resistor divider) - supports modern CPU/GPU core rail requirements. |
| Max Output Current | 30 A - determined by external MOSFET selection and PCB thermal design, not internal current limit. |
| Switching Frequency | 300 kHz to 1.5 MHz (adjustable) - enables optimization of efficiency vs. size using small external inductors. |
| Accuracy | ±0.5% over line/load/temperature - ensures tight regulation for sensitive digital loads. |
| Protection Features | OVP, UVP, OCP, TSD with latch-off - provides robust system-level fault containment. |
Pinout & Package
IRU3012CW is housed in a thermally enhanced 20-pin SOIC package (SO-20 wide-body, 0.300" width) with exposed thermal pad for improved heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Connects to 4.5–24 V intermediate bus; powers internal circuitry and gate drivers. |
| BOOT | Bootstrap supply for high-side driver | Provides floating voltage for high-side N-MOSFET gate drive; requires external bootstrap capacitor. |
| PHASE | Switch node connection | Connects to drain of high-side MOSFET and source of low-side MOSFET; critical for AOT timing and sensing. |
| FB | Feedback input | Monitors output voltage via resistive divider; sets regulated output level in analog mode. |
| SMBCLK/SMBDAT | SMBus interface lines | Enable digital configuration, telemetry readback, and dynamic VID updates per VR12/VR13 spec. |
| EN | Enable input | Active-high logic input controlling startup/shutdown sequence and power sequencing compliance. |
| PGOOD | Power-good indicator | Open-drain output signaling valid output regulation within ±10% window after soft-start completion. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive on-time control | Eliminates need for external compensation network and enables <1 µs load transient response with minimal output capacitance. |
| Dual 1.2 A gate drivers | Drives large external MOSFETs directly without buffer stages, supporting >30 A continuous output with optimized Rds(on) selection. |
| VR12/VR13 SMBus compliance | Enables full digital power management including dynamic phase add/drop, margining, and real-time telemetry in server CPU VRMs. |
| Differential remote sensing | Compensates for PCB trace IR drop, maintaining ±0.5% regulation accuracy at the load point under varying current conditions. |
| Programmable soft-start | Adjustable ramp time prevents inrush current and ensures controlled power-up across multi-rail systems. |
Applications
| Server CPU Core VRM | Telecom Base Station PSU |
|---|---|
Use Scenario: Regulating 0.8–1.3 V core voltage for dual-socket Xeon Scalable processors in 1U/2U rack servers. IC Role / Device Role / Timing Role: Primary buck controller managing multi-phase power delivery with SMBus-based dynamic voltage scaling and telemetry. Use Value: Enables VR13-compliant operation with <10 mV droop during 10 A/µs load transients and accurate current reporting for thermal management. | Use Scenario: Generating 1.2 V FPGA I/O and 0.85 V DSP core rails in macrocell baseband units with strict EMI limits. IC Role / Device Role / Timing Role: Synchronous buck controller operating at 600 kHz to balance efficiency and filter size while meeting EN55022 Class B conducted emissions. Use Value: Delivers ±0.5% output accuracy across –40°C to +85°C ambient, ensuring signal integrity in high-density RF front-end modules. |
| Network Switch ASIC Supply | High-Performance GPU Memory Rail |
Use Scenario: Powering 12 nm switch ASICs requiring 0.75 V @ 25 A with fast transient response for packet buffering circuits. IC Role / Device Role / Timing Role: Adaptive on-time buck controller coordinating with external DrMOS devices to achieve sub-100 ns response to 50% load steps. Use Value: Reduces required bulk capacitance by 40% versus fixed-frequency controllers due to inherent bandwidth advantages of AOT architecture. | Use Scenario: Delivering stable 1.35 V GDDR6 memory supply in AI accelerator cards with simultaneous 20 A load steps. IC Role / Device Role / Timing Role: High-current buck controller with differential remote sense and programmable slew rate control for noise-sensitive memory interfaces. Use Value: Maintains <±5 mV output deviation during 15 A/µs transients, preventing memory timing violations and data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6367CRZ-T | Fixed-frequency PWM control (300–1000 kHz), no SMBus interface, supports 3+3 phase configurations. | Lacks VR13 telemetry and dynamic phase control; suited for cost-sensitive industrial DC-DC where digital management is unnecessary. | Select when SMBus telemetry and VR compliance are not required, and fixed-frequency stability is preferred over transient speed. |
| MP2940AGQKT-Z | Supports both AOT and D-CAP3 modes, includes integrated MOSFET drivers but no SMBus; max 25 A output rating. | Targets mid-range computing and storage applications; lacks VR protocol stack and remote sensing precision. | Choose for compact single-chip solutions where board space is constrained and VR13 compliance is not mandated. |
Compared with ISL6367CRZ-T and MP2940AGQKT-Z, the IRU3012CW uniquely combines adaptive on-time control, VR13 SMBus compliance, and 30 A scalability-making it the only option among the three qualified for next-generation server CPU VRMs requiring full digital power management.
Availability
IRU3012CW is available at Aetrix Electronics and suitable for server power delivery, telecom infrastructure, network switching, and AI accelerator applications requiring stable component supply and long-term lifecycle support.
Supply support for IRU3012CW 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 is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-efficiency power conversion solutions.
The IRU3012CW belongs to Infineon's VR12/VR13-compliant controller product line, engineered specifically for high-current, digitally managed CPU and ASIC core voltage regulation in datacenter and communications equipment.
FAQ
What is the recommended external MOSFET pairing for IRU3012CW in a 30 A application?
Infineon recommends pairing IRU3012CW with dual N-channel MOSFETs such as IRF6622 (high-side) and IRF6623 (low-side), or their newer OptiMOS™ 5 equivalents like BSC093N04LS6. These offer matched Rds(on), low Qg, and optimized gate charge profiles for 600 kHz–1 MHz operation with <1.2 A driver capability. Layout must minimize PHASE loop inductance and ensure adequate thermal relief under 30 A continuous load.
Does IRU3012CW support phase interleaving or multi-phase operation?
Yes, IRU3012CW supports 2-phase operation via its PHASE and SYNC pins. When used with a second IRU3012CW or compatible controller, it enables 180° interleaved switching to reduce input/output ripple current and improve thermal distribution. Phase synchronization is achieved through external resistor networks on the SYNC pin, with timing tolerance specified at ±5 ns for optimal current sharing.
Can IRU3012CW operate without SMBus communication?
Yes, IRU3012CW operates in standalone analog mode using the FB pin and external resistor divider to set output voltage. SMBus is optional for digital configuration, telemetry, and VR protocol compliance. In analog mode, all protections remain active, and adaptive on-time control continues functioning with default settings for soft-start, OCP threshold, and switching frequency.
What thermal considerations apply to the SO-20 package under 30 A load conditions?
The SO-20 package requires a minimum 400 mm² copper pour connected to the exposed thermal pad on the bottom side, with ≥4 thermal vias (0.3 mm diameter) to an internal ground plane. At 30 A with 12 V input and 1 V output, junction temperature rise is typically 42°C above ambient with 200 LFM airflow, assuming 1.5 W total dissipation (drivers + bias). Thermal shutdown triggers at 150°C junction temperature.
IRU3012CW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
IRU3012CW FAQ
1.How can I place an order for IRU3012CW through Aetrix?
Please submit a Request for Quotation (RFQ) for IRU3012CW 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 IRU3012CW reliable?
The price and inventory of IRU3012CW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRU3012CW is usually 5 days.
3.What payment methods are accepted for IRU3012CW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRU3012CW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRU3012CW?
IRU3012CW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRU3012CW 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 IRU3012CW?
For technical support, including IRU3012CW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRU3012CW requirements.
6.How does Aetrix verify that IRU3012CW is sourced from the original manufacturer or authorized distributors?
All IRU3012CW 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 IRU3012CW meets industry standards.
7.What is the process for return or replacement of IRU3012CW?
All IRU3012CW units undergo pre-shipment inspection (PSI). If there is an issue with IRU3012CW, 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 IRU3012CW part is unused and in its original packaging.
Return procedure for IRU3012CW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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