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Infineon Technologies TDA387250000AUMA1
- Part No.:
- TDA387250000AUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 36-PowerVFQFN
- Datasheet:
-
TDA387250000AUMA1.pdf
- Description:
- IC REG BUCK ADJ 25A IQFN-36
- Quantity:
- Payment:
- Shipping:
Inventory:5,721
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Product details
Overview
TDA387250000AUMA1 from Infineon is a 25 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, and supports monotonic start-up with pre-bias capability-designed for high-density server point-of-load applications.
For engineers reviewing the TDA387250000AUMA1 datasheet, TDA387250000AUMA1 pinout, TDA387250000AUMA1 application, or TDA387250000AUMA1 equivalent, key selection criteria include its 25 A current rating, programmable 400 kHz–2 MHz switching frequency (excluding 1600 kHz), thermally compensated overcurrent protection with eight settings, and digitally programmable load-line without external components.
Technical Context
The device implements a Fast COT control architecture enabling stable regulation with ceramic output capacitors and no external compensation. Its internal PWM controller drives integrated high- and low-side OptiMOS FETs with bootstrap diode, supporting forced continuous conduction mode (FCCM) and diode emulation (DEM) for light-load efficiency optimization.
PMBus v1.3 compliance enables real-time telemetry of voltage, current, temperature, and power, while multiple time-programmable (MTP) memory stores up to 14 user-defined configurations. The EN pin provides voltage monitoring, and PGOD output signals valid regulation status with built-in delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 25 A continuous - supports high-current PoL rails in servers and telecom systems |
| 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 feedback resistor divider for core, I/O, or memory rail use |
| Switching Frequency | 400 kHz to 2 MHz (200 kHz steps, excluding 1600 kHz) - balances efficiency, size, and EMI performance |
| Operating Junction Temp | −40 °C to +125 °C - qualified for industrial and datacenter thermal environments |
| Protection Features | Thermally compensated OCP (8 settings), UVP/OVP, OTP, boot UVLO, HSS detection - ensures robust fault handling |
| Interface | PMBus v1.3 - enables configuration, telemetry, and fault logging in managed power systems |
Pinout & Package
Package: 5 mm × 6 mm PQFN, 36-pin, exposed thermal pad, RoHS2-compliant with exemption 7a, lead-free and halogen-free.
| 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 via pull-up/down resistor |
| SM_DATA / SM_CLK / SM_ALERT# | PMBus bidirectional data, clock, alert signal | Supports standard SMBus/PMBus transactions including read/write and alert response |
| MODE/TON | Mode selection / soft-start timing control | Selects FCCM/DEM operation and sets soft-start duration via external resistor |
| ILIM | Overcurrent limit setting input | Programs one of eight thermally compensated OCP thresholds using resistor divider |
| PGOOD | Power-good open-drain output | Signals regulated output within ±10% tolerance after soft-start and fault clearance |
| EN | Enable input with voltage monitor | Active-high enable with undervoltage lockout threshold at ~1.2 V |
| VIN / PVIN | Main and phase input voltage supply | High-current input paths routed to internal FETs and LDO; requires local bulk capacitance |
| VCC/LDO | Internal LDO output / external bias supply | Provides 5 V bias for controller logic; can be powered externally for wider input range |
| VDRV / GATEL | High-side gate driver output / low-side gate driver output | Drives integrated OptiMOS FETs; GATEL connects to source of low-side MOSFET |
| SW | Switch node | Connects to external inductor; carries high dv/dt and high di/dt during switching |
| PGND / AGND | Power ground / analog ground | Separate ground pins minimize noise coupling between power and sensing circuits |
Key Features
| Feature | Design Value |
|---|---|
| Integrated OptiMOS™ FETs with bootstrap diode | Eliminates external high-side driver and bootstrap capacitor, reducing BOM count and layout area |
| Fast COT control with ceramic-cap stability | Enables fast transient response and eliminates need for external compensation network |
| Digitally programmable load-line | Allows dynamic adjustment of output impedance to improve transient droop/servo response without resistors |
| MTP memory (14 writes) | Stores custom configurations (frequency, OCP, soft-start, telemetry scaling) for repeatable system deployment |
| Pre-bias start-up support | Allows safe startup into pre-charged output capacitors-critical for hot-swap and redundant power systems |
Applications
| Server CPU Core Rail | AI Accelerator Memory Supply |
|---|---|
Use Scenario: High-current, low-voltage power delivery to x86 or Arm CPU cores in dual-socket rack servers. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 0.8 V @ 25 A with <10 µs transient response. Use Value: Fast COT control and differential sensing maintain tight regulation under rapid load steps typical of CPU DVFS transitions. | Use Scenario: Powering GDDR6 or HBM2E memory stacks on AI training accelerators requiring clean, stable 1.1–1.35 V rails. IC Role / Device Role / Timing Role: Secondary PoL regulator with programmable load-line to match memory VDDQ/VDD termination requirements. Use Value: Digitally adjustable load-line compensates for package inductance, minimizing voltage deviation during burst-mode access. |
| Telecom Baseband Processor | Industrial FPGA I/O Bank Supply |
Use Scenario: Powering multi-core baseband processors in 5G macrocell radio units operating in extended temperature ranges. IC Role / Device Role / Timing Role: Single-rail buck converter with PMBus telemetry for remote health monitoring and thermal derating. Use Value: Real-time current/voltage/temperature reporting via PMBus enables predictive maintenance and dynamic power capping. | Use Scenario: Delivering configurable 1.2–3.3 V to reconfigurable I/O banks in industrial-grade FPGAs deployed in factory automation controllers. IC Role / Device Role / Timing Role: Programmable output voltage regulator with monotonic start-up and pre-bias support for hot-plug I/O modules. Use Value: Pin-strappable or PMBus-configurable VOUT and soft-start ensure compatibility across multiple FPGA I/O standards without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8770GQ-Z (Monolithic Power Systems) | 20 A rated, no PMBus, analog-only configuration, fixed 500 kHz–2.2 MHz frequency | Lacks telemetry and digital load-line; suited for cost-sensitive, non-managed PoL | Select when telemetry, programmability, and 25 A current are not required |
| TPS546D24R (Texas Instruments) | 40 A rated, PMBus v1.3, but larger 6 mm × 6 mm QFN, higher quiescent current in light-load DEM mode | Better suited for higher-current rails; less optimal for space-constrained 25 A designs | Select when >25 A headroom or TI ecosystem integration is prioritized over footprint |
Compared with MP8770GQ-Z and TPS546D24R, TDA387250000AUMA1 uniquely balances 25 A capability, 5 mm × 6 mm footprint, full PMBus telemetry, and digitally programmable load-line-making it optimal for compact, managed, high-performance PoL in datacenter and telecom infrastructure.
Availability
TDA387250000AUMA1 is available at Aetrix Electronics and suitable for server CPU core rails, AI accelerator memory supplies, telecom baseband processors, and industrial FPGA I/O bank supplies requiring stable component supply, long lifecycle support, and consistent parametric performance.
Supply support for TDA387250000AUMA1 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 silicon and silicon carbide power devices.
The TDA387xx series belongs to Infineon's OptiMOS iPOL family-designed specifically for high-efficiency, digitally managed point-of-load regulation in datacenter, telecom, and AI hardware where space, thermal density, and telemetry are critical.
FAQ
What is the maximum supported output current for TDA387250000AUMA1?
The device is rated for 25 A continuous DC output current under specified thermal conditions (Tj ≤ 125 °C, proper PCB copper area, and airflow). Peak current capability exceeds 30 A for short durations, but sustained operation above 25 A requires derating per the thermal de-rating curves in the datasheet Figure 10.
Does TDA387250000AUMA1 require external compensation components?
No. Its Fast Constant On-Time (COT) control architecture is inherently stable with ceramic output capacitors and does not require external Type-II or Type-III compensation networks. This simplifies design and reduces bill-of-materials count while maintaining fast transient response.
Can TDA387250000AUMA1 operate with a pre-charged output capacitor?
Yes. It supports pre-bias start-up, allowing safe activation into an already charged output rail. This feature prevents reverse current flow and potential damage during hot-swap or redundant power system sequencing, and is enabled by default unless disabled via PMBus command.
How many times can the MTP memory be programmed?
The MTP memory supports up to 14 write cycles for the USER section. Each write updates configuration parameters such as switching frequency, OCP threshold, soft-start time, and telemetry scaling factors. After 14 writes, further programming requires factory reset or replacement.
TDA387250000AUMA1 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:
- 25A
- 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
TDA387250000AUMA1 FAQ
1.How can I place an order for TDA387250000AUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA387250000AUMA1 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 TDA387250000AUMA1 reliable?
The price and inventory of TDA387250000AUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA387250000AUMA1 is usually 5 days.
3.What payment methods are accepted for TDA387250000AUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA387250000AUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA387250000AUMA1?
TDA387250000AUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA387250000AUMA1 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 TDA387250000AUMA1?
For technical support, including TDA387250000AUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA387250000AUMA1 requirements.
6.How does Aetrix verify that TDA387250000AUMA1 is sourced from the original manufacturer or authorized distributors?
All TDA387250000AUMA1 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 TDA387250000AUMA1 meets industry standards.
7.What is the process for return or replacement of TDA387250000AUMA1?
All TDA387250000AUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TDA387250000AUMA1, 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 TDA387250000AUMA1 part is unused and in its original packaging.
Return procedure for TDA387250000AUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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