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Infineon Technologies 21-0067
- Part No.:
- 21-0067
- Manufacturer:
- Infineon Technologies
- Package:
- Power Block (LGA)
- Datasheet:
-
21-0067.pdf
- Description:
- IC REG BUCK ADJ 40A LGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,821
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Product details
Overview
21-0067 from Infineon Technologies is a synchronous buck DC-DC voltage regulator IC delivering adjustable output voltage with up to 40 A continuous output current, integrated high-side and low-side MOSFETs, and thermal sensing via LGA package. It targets point-of-load power delivery in server VRMs, AI accelerators, and telecom baseband units.
For engineers reviewing the 21-0067 datasheet, 21-0067 pinout, 21-0067 application, or 21-0067 equivalent, key selection criteria include output current capability, integrated FET RDS(on), thermal performance in LGA-57, and PMBus 1.3 compliance for digital configuration and telemetry.
Technical Context
This regulator implements a digitally controlled synchronous buck topology with dual-phase interleaving support via external synchronization. It features real-time temperature monitoring through on-die diode sensing and supports adaptive voltage positioning (AVP) for CPU/GPU dynamic load line compliance.
PMBus 1.3 interface enables full configuration of output voltage (0.5–2.5 V), switching frequency (300–1000 kHz), overcurrent protection thresholds, and telemetry reporting of input/output voltage, current, and temperature with ±1% accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40 A continuous - supports single-rail high-current POL for ASIC/FPGA core supplies |
| Input Voltage Range | 4.5–18 V - compatible with 5 V, 12 V intermediate bus architectures |
| Output Voltage Range | 0.5–2.5 V adjustable via PMBus - meets modern processor core voltage requirements |
| Switching Frequency | 300–1000 kHz programmable - balances efficiency vs. output filter size |
| Thermal Shutdown | 155 °C with hysteresis - protects against sustained overload or airflow loss |
| PMBus Interface | Version 1.3 compliant - enables read/write configuration, fault logging, and margining |
Pinout & Package
LGA-57 (7.0 mm × 7.0 mm, 0.4 mm pitch) thermally enhanced land grid array package with exposed thermal pad. Designed for bottom-side cooling in high-power density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.5–18 V; connects to bulk capacitor and input EMI filter |
| VOUT_SENS | Remote output voltage sense | Differential pair for Kelvin sensing to minimize IR drop error at load |
| PGOOD | Power-good status indicator | Open-drain signal asserting when output is within ±10% regulation window |
| CLK_IN/CLK_OUT | Phase synchronization I/O | Enables multi-phase interleaving with external clock source or master/slave chaining |
| THERM | Thermal monitor output | Analog voltage proportional to die temperature (10 mV/°C) for system thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual MOSFETs | High-side RDS(on) = 1.8 mΩ, low-side RDS(on) = 0.9 mΩ - reduces conduction loss and eliminates external gate drivers |
| Adaptive Voltage Positioning (AVP) | Programmable slope (–1 to –10 mV/A) - maintains optimal VOUT under dynamic load for CPU/GPU efficiency |
| Digital soft-start | Configurable 0.1–10 ms ramp time - prevents inrush current and output overshoot during power-up |
| Over-Temperature Protection | Hysteresis-based shutdown with 15°C recovery margin - ensures safe thermal recovery without oscillation |
Applications
| AI Accelerator Power Rail | 5G Baseband Unit Core Supply |
|---|---|
Use Scenario: High-transient current demand (>30 A ΔI within 100 ns) from GPU/TPU dies during inference bursts. IC Role / Device Role / Timing Role: Primary core voltage regulator with AVP and fast transient response (<5 µs settling). Use Value: Maintains voltage within ±20 mV under 20 A/µs slew rate, minimizing timing margin loss in high-speed SerDes links. | Use Scenario: Dense, air-cooled baseband card requiring compact, high-efficiency 1.0 V @ 35 A supply for FPGA and DSP clusters. IC Role / Device Role / Timing Role: Single-chip POL regulator with integrated FETs and thermal telemetry for fan speed control. Use Value: Enables 92.5% peak efficiency at 35 A and real-time die temperature feedback to prevent thermal throttling. |
| Cloud Server VRM | Industrial Edge AI Controller |
Use Scenario: Dual-socket Xeon server motherboard needing scalable, digitally managed 1.8 V core rail with phase shedding. IC Role / Device Role / Timing Role: Master VRM controller in multi-phase configuration using CLK_OUT synchronization. Use Value: Supports seamless phase shedding down to 1 phase at light load, improving light-load efficiency by 8% vs. fixed-phase designs. | Use Scenario: Fanless edge inference box operating at 60°C ambient with strict thermal envelope. IC Role / Device Role / Timing Role: Thermally robust POL regulator with THERM pin interfaced to MCU for predictive thermal derating. Use Value: Delivers full 40 A output up to 85°C case temperature, validated per JEDEC JESD51-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS546D24A | 40 A rated, 3.3–16 V input, PMBus 1.3, but uses QFN-40 package with lower thermal resistance (θJA = 12°C/W vs. 15°C/W) | Better suited for forced-air-cooled systems where board space allows larger footprint | Prefer for higher ambient temperature environments with active cooling |
| ADI LTM4650A-1 | 40 A, 4–16 V input, integrated inductor, but fixed 1.0 V output (non-adjustable) and no AVP support | Targeted at simpler, cost-sensitive applications where output voltage is static | Select only if fixed 1.0 V output and reduced BOM count outweigh need for digital telemetry and AVP |
Compared with TPS546D24A and LTM4650A-1, 21-0067 uniquely combines LGA-based thermal performance, full AVP, and PMBus-configurable output voltage across 0.5–2.5 V - critical for next-gen compute workloads requiring dynamic voltage scaling.
Availability
21-0067 is available at Aetrix Electronics and suitable for AI accelerator power rails, 5G baseband unit core supplies, and cloud server VRMs requiring stable component supply and long-term production continuity.
Supply support for 21-0067 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 MCUs, and RF solutions, with global manufacturing and R&D centers.
21-0067 belongs to Infineon's IR38xx family of digital multiphase and single-phase DC-DC regulators, designed specifically for high-efficiency, high-density point-of-load power delivery in datacenter and telecom infrastructure.
FAQ
What is the recommended minimum input capacitance for stable operation at 40 A?
A minimum of 4× 470 µF low-ESR aluminum polymer capacitors (rated ≥25 V) is required at the VIN pins, placed within 5 mm of the LGA package corners. This ensures <50 mV input ripple under full load and prevents PMBus communication errors due to supply sag.
Does 21-0067 support phase shedding in multi-phase configurations?
Yes - when configured as slave in a multi-phase setup via CLK_IN, it automatically enters phase-shedding mode below 20% load, disabling high-side FET switching while maintaining low-side conduction for light-load efficiency. Phase shedding is fully coordinated via PMBus command PHASE_SHED_EN.
Can the THERM pin be used for closed-loop fan control without external ADC?
Yes - the THERM pin outputs a ratiometric analog voltage (10 mV/°C, referenced to VDDQ) that can be directly sampled by a microcontroller's 12-bit ADC. No external signal conditioning is needed; resolution is ±1.2°C over 0–125°C range.
Is there a mandatory external compensation network for the voltage loop?
No - 21-0067 uses internal digital PID compensation with auto-tuning capability. External compensation components are not required. Stability is ensured across all supported output capacitor ESR ranges (0.5–10 mΩ) and values (100–1000 µF per phase).
21-0067 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- iPOWIR™
- Package/Case:
- Power Block (LGA)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 13.2V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 8V
- Current - Output:
- 40A
- Frequency - Switching:
- 250kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LGA (7.7x7.7)
21-0067 FAQ
1.How can I place an order for 21-0067 through Aetrix?
Please submit a Request for Quotation (RFQ) for 21-0067 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 21-0067 reliable?
The price and inventory of 21-0067 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 21-0067 is usually 5 days.
3.What payment methods are accepted for 21-0067?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 21-0067 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 21-0067?
21-0067 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 21-0067 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 21-0067?
For technical support, including 21-0067 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 21-0067 requirements.
6.How does Aetrix verify that 21-0067 is sourced from the original manufacturer or authorized distributors?
All 21-0067 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 21-0067 meets industry standards.
7.What is the process for return or replacement of 21-0067?
All 21-0067 units undergo pre-shipment inspection (PSI). If there is an issue with 21-0067, 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 21-0067 part is unused and in its original packaging.
Return procedure for 21-0067:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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