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Infineon Technologies TDA386400000AUMA1
- Part No.:
- TDA386400000AUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 36-PowerVFQFN
- Datasheet:
-
TDA386400000AUMA1.pdf
- Description:
- IC REG BUCK PROG 40A IQFN-36
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
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Product details
Overview
TDA386400000AUMA1 from Infineon is a fully integrated synchronous buck regulator with integrated OptiMOS™ power stages, supporting Intel SVID and PMBus/I²C interfaces for server and datacenter point-of-load applications. It delivers up to 40 A output current, operates from 3.0 V–17 V input, regulates output from 0.25 V–3.04 V, features Fast Constant-On-Time (COT) control, and includes thermally compensated overcurrent protection with eight selectable thresholds.
For engineers reviewing the TDA386400000AUMA1 datasheet, TDA386400000AUMA1 pinout, TDA386400000AUMA1 application, or TDA386400000AUMA1 equivalent, key selection criteria include SVID compliance, 40 A continuous output capability, programmable switching frequency (400 kHz–2 MHz), differential 12 V input current sensing, and monotonic soft-start with pre-bias startup support.
Technical Context
The TDA386400000AUMA1 implements a digitally enhanced Fast COT control architecture that eliminates external compensation while maintaining stability with ceramic output capacitors. Its dual-mode interface supports both Intel SVID (VR13/VR14) and PMBus command sets, enabling dynamic voltage scaling and real-time telemetry reporting of voltage, current, temperature, and power.
It integrates high- and low-side OptiMOS™ MOSFETs with bootstrap diode, an internal LDO for VCC generation, and precision differential sensing on VINSENP/VINSENM for accurate 12 V input current measurement-no external sense amplifier or pi-network required. The device uses on-chip MTP memory for configuration storage and supports programmable load-line without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40 A continuous; enables single-rail CPU/GPU core power delivery without parallel phases. |
| Input Voltage Range | 3.0 V–17 V; supports 5 V, 12 V, or wide-range intermediate bus architectures. |
| Output Voltage Range | 0.25 V–3.04 V via external resistor divider in SVID mode; matches Intel VR requirements. |
| Switching Frequency | 400 kHz–2 MHz in 200 kHz steps (excluding 1600 kHz); balances efficiency, size, and transient response. |
| Control Architecture | Enhanced Fast COT; achieves <1 µs load-step response with no external compensation network. |
| Current Sensing | Differential 12 V input sensing (VINSENP/VINSENM); eliminates external interface circuitry and improves accuracy. |
| Protection Features | Thermally compensated OCP (8 settings), OVP/UVP/OTP/Boot UVLO; ensures robust fault handling in dense server PCBs. |
Pinout & Package
Package: 5 mm × 6 mm PQFN, 40-pin, exposed thermal pad, RoHS2-compliant with exemption 7a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Accepts 3.0–17 V input; connects to bulk capacitor and high-current PVIN plane. |
| VOUT | Power output node | High-current output to load; requires low-inductance connection to output capacitor bank. |
| VINSENP / VINSENM | Differential input current sense inputs | Enable accurate 12 V input current measurement without external amplifiers or resistors. |
| SVID_DATA / SVID_CLK | Intel SVID bidirectional interface | Supports VR13/VR14 communication including VID code updates and status reporting. |
| I2C_SDA / I2C_SCL | PMBus/I²C slave interface | Allows telemetry readback (V/I/T/P), configuration, and fault logging via standard system management bus. |
| EN | Enable control input | Active-high logic input; controls power-up sequencing and system-level enable coordination. |
| BOOT | Bootstrap supply node | Connects to bootstrap capacitor; supplies gate drive voltage for high-side MOSFET. |
| PGOOD | Power-good indicator | Open-drain output signals valid regulation after soft-start and within OVP/UVP limits. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated OptiMOS™ FETs + bootstrap diode | Reduces external component count by eliminating discrete high-/low-side MOSFETs and bootstrap diode. |
| Monotonic soft-start with pre-bias support | Prevents reverse current flow during startup into pre-charged output rails-critical for multi-rail systems. |
| Digitally programmable load-line | Enables precise droop control via register write; replaces external resistive networks and improves repeatability. |
| Single-image multiple-time programming (MTP) | User-configurable registers stored in non-volatile memory; retains settings across power cycles without EEPROM. |
| Real-time telemetry via I²C/PMBus | Reports voltage, current, temperature, and power with 11-bit/16-bit linear formats-enables closed-loop system monitoring. |
Applications
| Server CPU Core Power | AI Accelerator SoC Rails |
|---|---|
Use Scenario: Primary 0.8 V–1.2 V core rail for dual-socket Xeon Scalable processors in 1U/2U rack servers. IC Role / Device Role / Timing Role: SVID-controlled synchronous buck regulator delivering up to 40 A with fast transient response to handle CPU DVFS events. Use Value: Eliminates need for external current-sense amplifiers and compensating networks, reducing BOM cost and layout area by >30% vs. controller+FET solutions. | Use Scenario: High-current auxiliary rail (e.g., 0.75 V @ 35 A) for GPU memory or AI inference accelerators in disaggregated compute modules. IC Role / Device Role / Timing Role: Digitally programmable POL regulator with load-line tuning for dynamic impedance matching under variable workload conditions. Use Value: Programmable monotonic soft-start and pre-bias startup prevent rail collapse during hot-plug events in modular chassis environments. |
| Storage Controller Power | Telecom Baseband ASIC Supply |
Use Scenario: 1.8 V or 1.2 V supply for NVMe SSD controllers requiring tight voltage regulation and telemetry feedback. IC Role / Device Role / Timing Role: PMBus-configurable buck regulator supporting remote firmware updates and runtime margining tests. Use Value: Integrated differential input current sensing provides ±2% current accuracy-enabling precise power budgeting and thermal modeling. | Use Scenario: Point-of-load supply for 5G baseband processors operating in -40 °C to +85 °C ambient with strict EMI constraints. IC Role / Device Role / Timing Role: Wide-input (5–17 V) buck regulator with programmable 400–2000 kHz switching frequency to optimize efficiency vs. noise profile. Use Value: Fast COT control achieves <500 ns transient recovery time-maintaining voltage within ±10 mV during 10 A/µs load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8772GQ-0000-P | 40 A rated, but uses analog current-mode control; lacks SVID interface and integrated current sensing. | Targeted at industrial DC/DC where PMBus suffices; not compatible with Intel VR platforms. | Select only if SVID is unnecessary and design tolerates external current-sense circuitry. |
| ISL91302BIRZ-T | Multi-phase capable (dual 20 A), supports SVID but no differential 12 V input sensing; smaller 4×4 mm package. | Better suited for space-constrained mobile/embedded SoCs; lower max current per phase limits single-rail 40 A use. | Choose when board area is critical and phase interleaving is acceptable for ripple reduction. |
Compared with MP8772GQ-0000-P and ISL91302BIRZ-T, the TDA386400000AUMA1 uniquely combines SVID compliance, integrated 12 V differential current sensing, and single-package 40 A capability-making it the only drop-in solution for Intel-based server CPU core rails requiring full telemetry and VR14 support.
Availability
TDA386400000AUMA1 is available at Aetrix Electronics and suitable for server motherboard designs, AI accelerator power subsystems, and telecom baseband power delivery requiring stable component supply, long-term lifecycle assurance, and full SVID/PMBus interoperability.
Supply support for TDA386400000AUMA1 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 leadership in silicon carbide and OptiMOS™ power devices.
The TDA386400000AUMA1 belongs to Infineon's iPOL® family of intelligent POL regulators, designed specifically for high-efficiency, digitally controlled point-of-load power delivery in datacenter and enterprise computing infrastructure.
FAQ
What is the maximum junction temperature rating for TDA386400000AUMA1?
The device is rated for operation from –40 °C to +125 °C junction temperature. Thermal derating begins above 100 °C ambient depending on airflow and PCB copper area; full 40 A output is guaranteed up to Tj = 125 °C with appropriate heatsinking and layout per Infineon's recommended thermal pad design in Section 18.2 of the datasheet.
Does TDA386400000AUMA1 require external compensation components?
No. The Enhanced Fast COT control architecture is internally compensated and stable with ceramic output capacitors alone. No external Type-II or Type-III compensation network is needed-reducing component count and simplifying layout while maintaining <1 µs transient response.
Can TDA386400000AUMA1 operate without an SVID host controller?
Yes. It supports standalone operation via PMBus commands for configuration and telemetry. In I²C/PMBus mode, output voltage can be set using the VOUT_COMMAND register, and all protections remain active-enabling use in non-Intel systems such as FPGA or ASIC power rails with digital supervision.
How is the 12 V input current measured without external components?
The device uses dedicated differential inputs (VINSENP and VINSENM) connected directly across a 1 mΩ shunt on the 12 V input path. Internal matched amplifiers and ADC convert the sensed voltage to digital current data with ±2% accuracy-no external op-amps, gain resistors, or calibration required.
TDA386400000AUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 36-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.25V
- Voltage - Output (Max):
- 3.04V
- Current - Output:
- 40A
- Frequency - Switching:
- 400kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-IQFN-36-3
TDA386400000AUMA1 FAQ
1.How can I place an order for TDA386400000AUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA386400000AUMA1 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 TDA386400000AUMA1 reliable?
The price and inventory of TDA386400000AUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA386400000AUMA1 is usually 5 days.
3.What payment methods are accepted for TDA386400000AUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA386400000AUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA386400000AUMA1?
TDA386400000AUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA386400000AUMA1 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 TDA386400000AUMA1?
For technical support, including TDA386400000AUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA386400000AUMA1 requirements.
6.How does Aetrix verify that TDA386400000AUMA1 is sourced from the original manufacturer or authorized distributors?
All TDA386400000AUMA1 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 TDA386400000AUMA1 meets industry standards.
7.What is the process for return or replacement of TDA386400000AUMA1?
All TDA386400000AUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA386400000AUMA1, 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 TDA386400000AUMA1 part is unused and in its original packaging.
Return procedure for TDA386400000AUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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