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Infineon Technologies TDA387400000AUMA1
- Part No.:
- TDA387400000AUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 36-PowerVFQFN
- Datasheet:
-
TDA387400000AUMA1.pdf
- Description:
- IC REG BUCK ADJ 40A IQFN-36
- Quantity:
- Payment:
- Shipping:
Inventory:112
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Product details
Overview
TDA387400000AUMA1 from Infineon is a 40 A single-voltage synchronous buck regulator with integrated OptiMOS™ power stages, PMBus interface, and fast Constant On-Time (COT) control. It operates from 4.5 V to 17 V input, delivers 0.25 V–5.12 V output, supports monotonic soft-start and pre-bias start-up, and targets high-density server point-of-load applications.
For engineers reviewing the TDA387400000AUMA1 datasheet, TDA387400000AUMA1 pinout, TDA387400000AUMA1 application, or TDA387400000AUMA1 equivalent, key selection considerations include its digitally programmable load-line, thermally compensated overcurrent protection with eight settings, 400 kHz–2 MHz selectable switching frequency (excluding 1600 kHz), and MTP memory supporting up to 14 writes for user configuration.
Technical Context
The device implements a fast COT control architecture with internal voltage-mode feedback compensation, enabling stable operation with ceramic output capacitors without external compensation components. Its integrated bootstrap diode and dual-stage gate drivers support high-efficiency synchronous rectification at up to 40 A continuous output current.
PMBus v1.3 compliance enables real-time telemetry of voltage, current, temperature, and power, while the 11-bit linear data format ensures precise reporting across the full operating range. Configuration is stored in on-chip multiple-time-programmable (MTP) memory, allowing field updates without hardware changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40 A continuous - supports high-power CPU/GPU core rails in servers and AI accelerators |
| Input Voltage Range | 4.5 V to 17 V - compatible with standard 12 V intermediate bus architectures |
| Output Voltage Range | 0.25 V to 5.12 V - programmable via resistor divider or PMBus for sub-1 V core supplies |
| Switching Frequency | 400 kHz to 2 MHz (200 kHz steps, excluding 1600 kHz) - balances efficiency vs. size for compact PCB layout |
| Operating Junction Temp | −40 °C to +125 °C - qualified for industrial and telecom thermal environments |
| Protection Features | Thermally compensated OCP (8 settings), UVP/OVP, OTP, boot UVLO, HSS detection - enables robust system-level fault handling |
| Interface | PMBus v1.3 compliant - supports standard commands (READ_VIN, READ_IOUT, READ_TEMPERATURE_1, etc.) for telemetry and configuration |
Pinout & Package
Package: 5 mm × 6 mm PQFN, 36-pin, exposed thermal pad, RoHS2-compliant with exemption 7a, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOSENM / VOSENP | Differential output voltage sense inputs | Enable Kelvin sensing for accurate regulation under high-current PCB trace resistance |
| SM_ADDR/PROG | PMBus address select / programming mode enable | Configures slave address or enters programming mode for MTP write operations |
| SM_DATA / SM_CLK / SM_ALERT# | PMBus bidirectional data, clock, alert signal | Supports standard SMBus/PMBus protocol stack with interrupt-driven fault reporting |
| MODE/TON | Mode selection / soft-start timing control | Selects FCCM/DEM operation and sets monotonic soft-start duration via resistor strap or PMBus |
| ILIM | Overcurrent limit setting input | Resistor-strapped or PMBus-configurable current limit threshold with thermal compensation |
| PGOOD | Power-good status output | Open-drain signal indicating regulated output within ±10% tolerance and no active faults |
| VIN / PVIN | Main input power supply connections | High-current paths routed to internal FETs; PVIN pins reduce IR drop for improved efficiency |
| VCC/LDO | Internal LDO input / bias supply | Accepts 3.0–17 V external bias or self-generates from VIN for wide-input flexibility |
| VDRV / GATEL / SW / PGND | High-side gate driver, low-side gate driver, switch node, power ground | Integrated driver stages directly control internal OptiMOS™ FETs; SW node connects to external inductor |
Key Features
| Feature | Design Value |
|---|---|
| Fast COT Control Engine | Eliminates need for external compensation network while maintaining stability with ceramic output capacitors |
| Digitally Programmable Load-Line | Adjusts output voltage droop vs. load current without external resistors, simplifying transient response tuning |
| Multiple Time Programming (MTP) | 14-write endurance for USER section allows firmware-based configuration updates in production or field |
| Pre-Bias Start-Up | Enables safe startup into pre-charged output capacitors, preventing reverse current flow in hot-swap systems |
| Enhanced Light-Load Efficiency Modes | Configurable Forced CCM or Diode Emulation Mode optimizes efficiency across full load range |
Applications
| Server Core Power | AI Accelerator Rail |
|---|---|
Use Scenario: Primary 0.8 V/40 A core supply for x86 CPUs in dual-socket rack servers. IC Role / Device Role / Timing Role: Synchronous buck regulator providing tightly regulated, fast-transient power with PMBus telemetry for dynamic voltage/frequency scaling. Use Value: Fast COT control achieves <10 µs load-step response; digital load-line eliminates manual resistor tuning during validation. | Use Scenario: High-current 0.75 V rail for NVIDIA H100 GPU or AMD MI300X compute die. IC Role / Device Role / Timing Role: Integrated POL regulator with integrated FETs and differential sensing for millivolt-level accuracy under 300 A peak load transients. Use Value: Pre-bias start-up prevents inrush into charged VRM output caps; thermally compensated OCP avoids false trips during thermal cycling. |
| Telecom Baseband Unit | Storage Controller Supply |
Use Scenario: 1.1 V/25 A supply for FPGA-based baseband processing in 5G macro radios. IC Role / Device Role / Timing Role: Digitally configurable buck regulator supporting remote firmware updates via PMBus for field-deployed units. Use Value: MTP memory enables post-manufacture calibration and adaptive load-line tuning without hardware change. | Use Scenario: 1.8 V/15 A power rail for NVMe SSD controller ASIC in enterprise storage arrays. IC Role / Device Role / Timing Role: High-efficiency POL regulator with monotonic soft-start to prevent reset glitches during cold boot sequences. Use Value: Pin-strappable MODE/TON and ILIM allow factory-set configurations without PMBus infrastructure. |
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-Z (Monolithic Power Systems) | 30 A rated, no PMBus, analog-only configuration, fixed 600 kHz/1 MHz switching | Lacks telemetry and digital load-line; suited for cost-sensitive, non-telemetry designs | Choose when PMBus telemetry and field reconfiguration are unnecessary and BOM cost is primary constraint |
| TPS546D24RVR (Texas Instruments) | 40 A rated, PMBus v1.3, but uses external MOSFETs and requires more external components | Higher design complexity due to discrete FET selection and gate drive tuning | Choose when higher thermal customization or discrete FET optimization is required over integrated simplicity |
Compared with MP8772GQ-Z and TPS546D24RVR, TDA387400000AUMA1 delivers integrated FETs, embedded COT stability, and MTP-based configuration in a smaller footprint-reducing total solution size by ~35% and eliminating gate-drive loop layout concerns.
Availability
TDA387400000AUMA1 is available at Aetrix Electronics and suitable for server power delivery, AI accelerator board development, and telecom baseband unit production requiring stable component supply and long-term lifecycle support.
Supply support for TDA387400000AUMA1 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 silicon and silicon carbide power devices.
TDA387400000AUMA1 belongs to the OptiMOS™ iPOL family-designed specifically for high-current, digitally managed point-of-load regulation in datacenter and AI infrastructure where integration, telemetry, and thermal resilience are critical.
FAQ
What is the maximum supported PMBus address for TDA387400000AUMA1?
The device supports 7-bit PMBus slave addresses from 0x10 to 0x77, configured via the SM_ADDR/PROG pin strap or PMBus WRITE_BYTE command. Default address is 0x10, and up to 31 unique addresses can be assigned per board using resistor strapping or firmware initialization.
Does TDA387400000AUMA1 require external bootstrap capacitor?
No. The device integrates a bootstrap diode and self-biasing circuitry for the high-side gate driver, eliminating the need for an external bootstrap capacitor. This reduces component count and improves reliability in high-density layouts.
How many times can the MTP memory be rewritten in TDA387400000AUMA1?
The USER section of the MTP memory supports up to 14 write cycles across its lifetime, verified per Infineon's qualification testing. Each write includes CRC verification and automatic erase-before-write; partial writes are not supported.
Can TDA387400000AUMA1 operate with a 3.3 V input supply?
Yes-when externally biased via the VCC/LDO pin with ≥3.0 V, the device supports input voltages as low as 3.0 V on VIN. Without external bias, minimum VIN is 4.5 V due to internal LDO requirements for gate driver operation.
TDA387400000AUMA1 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.25V
- Voltage - Output (Max):
- 5.12V
- Current - Output:
- 40A
- Frequency - Switching:
- 400kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-IQFN-36-3
TDA387400000AUMA1 FAQ
1.How can I place an order for TDA387400000AUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA387400000AUMA1 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 TDA387400000AUMA1 reliable?
The price and inventory of TDA387400000AUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA387400000AUMA1 is usually 5 days.
3.What payment methods are accepted for TDA387400000AUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA387400000AUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA387400000AUMA1?
TDA387400000AUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA387400000AUMA1 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 TDA387400000AUMA1?
For technical support, including TDA387400000AUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA387400000AUMA1 requirements.
6.How does Aetrix verify that TDA387400000AUMA1 is sourced from the original manufacturer or authorized distributors?
All TDA387400000AUMA1 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 TDA387400000AUMA1 meets industry standards.
7.What is the process for return or replacement of TDA387400000AUMA1?
All TDA387400000AUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA387400000AUMA1, 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 TDA387400000AUMA1 part is unused and in its original packaging.
Return procedure for TDA387400000AUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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