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Texas Instruments TPS62871QWRXSRQ1
- Part No.:
- TPS62871QWRXSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62871QWRXSRQ1.pdf
- Description:
- IC REG BUCK ADJ 9A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,167
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Product details
Overview
TPS62871QWRXSRQ1 from Texas Instruments is a 9A, AEC-Q100 Grade-1 automotive synchronous step-down DC/DC converter with I²C interface, differential remote sensing, and stackable architecture. It operates from 2.7V–6V input, delivers output voltage from 0.4V to 3.35V in selectable ranges, achieves ±1% DC accuracy, and integrates 7mΩ/4.5mΩ MOSFETs for high-efficiency core power in ADAS and infotainment systems.
For engineers reviewing the TPS62871QWRXSRQ1 datasheet, TPS62871QWRXSRQ1 pinout, TPS62871QWRXSRQ1 application, or TPS62871QWRXSRQ1 equivalent, key selection criteria include its 9A current rating, I²C-configurable voltage/frequency, thermal warning capability, forced-PWM vs power-save mode control, and VQFN-FCRLF (RXS) package with wettable flanks for automotive-grade solder joint inspection.
Technical Context
The TPS62871QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast load transients and low output voltage ripple. Its dual-loop architecture combines voltage-mode control with emulated current sensing, enabling stable operation across wide VIN–VOUT differentials and high ambient temperatures up to +125°C ambient (TJ ≤ +150°C).
Differential remote sensing (VOSNS/GOSNS) enables precise point-of-load regulation independent of PCB trace IR drop, while stackable operation-via SYNC_OUT daisy-chaining and synchronized MODE/SYNC-allows parallel configuration of identical-current devices for higher output current or thermal spreading without external current-sharing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 9A continuous; supports stacking for scalable current delivery without derating at TJ = 150°C |
| Input Voltage Range | 2.7V to 6V; compatible with 3.3V, 5V, and automotive battery rails including cold-crank transients |
| Output Voltage Accuracy | ±1% over line/load/temperature; enabled by differential remote sensing and internal reference stability |
| Switching Frequency | 1.5/2.25/2.5/3.0MHz (resistor-selectable via FSEL); supports synchronization to external clock in same range |
| I²C Interface | Up to 1MHz Fast Mode Plus; enables real-time voltage adjustment, temperature monitoring, and fault reporting |
| Thermal Protection | Thermal warning at 150°C TJ and shutdown at 170°C TJ with 20°C hysteresis for robust automotive operation |
| Package | 2.55mm × 3.55mm × 1mm VQFN-FCRLF (RXS, 16-pin) with wettable flanks for automated optical inspection |
Pinout & Package
TPS62871QWRXSRQ1 uses a 16-pin VQFN-FCRLF (RXS) package with exposed thermal pad soldered to GND for optimal thermal performance (RθJB = 7.7°C/W). Pin functions are validated per TI SLVSFJ3E Rev. August 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Control loop compensation node | Connects external RC network to GOSNS; shared across stacked devices for coordinated loop response |
| VOSNS / GOSNS | Differential output voltage sense inputs | Enable ±1% regulation at point-of-load; reject PCB trace resistance effects up to 100mV common-mode offset |
| EN | Enable control input | Logic-level enable with internal pulldown; requires ≥15kΩ series resistor; interconnects in stacked configurations |
| MODE/SYNC | Operating mode select / sync input | Pull-low = power-save mode; pull-high = forced-PWM; accepts external clock for frequency synchronization |
| SDA / SCL | I²C bidirectional data / clock | Supports 1MHz Fast Mode Plus; pulled up externally; tied to GND for secondary devices in stack |
| VSEL / FSEL | Startup voltage / switching frequency select | Resistor-programmable (4 options each); factory-mapped I²C address linked to VSEL setting (0x41 for TPS62871QWRXSRQ1) |
| SYNC_OUT | Internal clock output | Daisy-chains to MODE/SYNC of next device in stack; defines secondary role when pulled to GND via 47kΩ |
| PG | Power-good open-drain output | Window comparator with 92–98% UVLO and 102–108% OVLO thresholds; shared in stack with primary-only output |
Key Features
| Feature | Design Value |
|---|---|
| Stackable architecture | Enables parallel operation of identical-current devices (e.g., two TPS62871QWRXSRQ1 = 18A) with automatic phase synchronization and no external current-sharing components |
| Differential remote sensing | Compensates for up to 100mV IR drop between regulator and load, ensuring ±1% DC accuracy regardless of PCB layout or copper weight |
| Programmable I²C interface | Real-time output voltage adjustment, thermal status readback, and fault logging without hardware changes-critical for adaptive SoC power management |
| Adjustable switching frequency | Four discrete frequencies (1.5/2.25/2.5/3.0MHz) selected via FSEL resistor; avoids EMI-sensitive bands and optimizes efficiency vs. size trade-offs |
| Active output discharge | Provides controlled 50–200mA constant-current or 6Ω resistive discharge path to prevent floating outputs during disable, improving system safety and sequencing |
Applications
| Infotainment Power Supply | ADAS Domain Controller Core |
|---|---|
|
Use Scenario: Powering multi-core application processors and GPU clusters in automotive head units requiring dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary core rail regulator with I²C-controlled voltage steps synchronized to CPU performance states. Use Value: ±1% accuracy and fast transient response maintain processor stability during burst workloads; stackable design scales current for next-gen SoCs. |
Use Scenario: Delivering clean, tightly regulated power to radar SoCs and vision processors in L2+/L3 ADAS systems. IC Role / Device Role / Timing Role: High-current buck converter with differential sensing to compensate for long flex-cable voltage drops in sensor modules. Use Value: Thermal warning at 150°C TJ enables predictive throttling before domain controller shutdown; wettable flanks ensure IPC-A-610-compliant solder joints. |
| FPGA/ASIC Core Supply | DDR Memory Termination |
|
Use Scenario: Generating sub-1V core voltages for automotive-grade FPGAs used in camera fusion and sensor preprocessing. IC Role / Device Role / Timing Role: Precision point-of-load regulator with programmable soft-start and power-good sequencing for FPGA configuration integrity. Use Value: 0.4V–0.71875V range in 1.25mV steps enables exact match to FPGA VCCINT specs; forced-PWM mode minimizes output ripple during logic transitions. |
Use Scenario: Providing stable termination voltage (VTT) for LPDDR4/5 memory interfaces in telematics control units. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth buck converter supporting fast VTT slew rates during memory refresh cycles. Use Value: DCS-Control topology achieves <5µs transient recovery; ±1% accuracy ensures DDR timing margins remain intact across temperature and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62864QWRXSRQ1 | 6A rating, same RXS package, no I²C interface, fixed 0.6V startup | Lacks remote sensing, voltage programmability, and thermal warning; suitable only for static, non-critical rails | Select when cost sensitivity outweighs configurability needs and current demand ≤6A |
| MPQ4436-AEC1 | 8A rating, QFN-18 package, no I²C, 2.5–6V input, ±2% accuracy | No differential sensing, no stackability, lower thermal warning threshold (145°C), no spread-spectrum | Choose for simpler designs where I²C telemetry and ±1% accuracy are not required |
Compared with TPS62871QWRXSRQ1, TPS62864QWRXSRQ1 offers lower cost but sacrifices voltage flexibility and diagnostics, while MPQ4436-AEC1 provides competitive integration at lower current and reduced precision-neither matches the full feature set for high-reliability, adaptive automotive core supplies.
Availability
TPS62871QWRXSRQ1 is available at Aetrix Electronics and suitable for infotainment systems, ADAS domain controllers, and FPGA/ASIC core power applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS62871QWRXSRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive-grade power management ICs, with decades of automotive qualification expertise and functional safety documentation support.
The TPS6287x-Q1 product line is designed specifically for high-current, high-precision automotive power rails-targeting ADAS, digital cockpit, and centralized E/E architectures demanding stackability, remote sensing, and I²C telemetry.
FAQ
What is the maximum output current capability of TPS62871QWRXSRQ1 in standalone operation?
The TPS62871QWRXSRQ1 delivers up to 9A continuous output current under recommended operating conditions (TJ ≤ 150°C, VIN = 2.7V–6V). Its integrated 7mΩ high-side and 4.5mΩ low-side MOSFETs minimize conduction losses, enabling full-rated current even at +125°C ambient temperature with proper PCB thermal design.
Does TPS62871QWRXSRQ1 support differential remote sensing, and how is it implemented?
Yes, TPS62871QWRXSRQ1 supports true differential remote sensing using dedicated VOSNS and GOSNS pins. This allows regulation at the load point by rejecting voltage drop across PCB traces or connectors, achieving better than ±1% DC accuracy across all operating conditions-including full load, temperature extremes, and input variations.
How does the I²C interface of TPS62871QWRXSRQ1 enhance system-level power management?
The I²C interface of TPS62871QWRXSRQ1 enables real-time voltage adjustment, thermal status monitoring, and fault flag reporting without hardware modifications. For example, firmware can dynamically scale the output voltage based on SoC workload, read die temperature to trigger thermal throttling, or log undervoltage events for diagnostic analysis-enhancing reliability in automotive ECUs.
Can multiple TPS62871QWRXSRQ1 devices be stacked, and what are the requirements?
Yes, TPS62871QWRXSRQ1 supports stacking with identical-current devices only. All units must share COMP, EN, PG, and VOSNS/GOSNS connections; SYNC_OUT of each device daisy-chains to MODE/SYNC of the next. Stacking enables up to 18A (2×), 27A (3×), etc., with automatic interleaving and balanced current sharing-no external current-sense or master-slave logic required.
What package type and thermal characteristics define the mechanical implementation of TPS62871QWRXSRQ1?
TPS62871QWRXSRQ1 uses a 2.55mm × 3.55mm × 1mm VQFN-FCRLF (RXS) package with wettable flanks and an exposed thermal pad soldered to GND. Its junction-to-board thermal resistance is 7.7°C/W, enabling efficient heat transfer to the PCB. The package meets IPC-A-610 Class 3 standards and supports automated optical solder-joint inspection.
TPS62871QWRXSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TFQFN Exposed Pad
- 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):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 3.35V
- Current - Output:
- 9A
- Frequency - Switching:
- 1.5MHz, 2.25MHz, 2.5MHz, 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-VQFN (2.55x3.55)
TPS62871QWRXSRQ1 FAQ
1.How can I place an order for TPS62871QWRXSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62871QWRXSRQ1 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 TPS62871QWRXSRQ1 reliable?
The price and inventory of TPS62871QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62871QWRXSRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62871QWRXSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62871QWRXSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62871QWRXSRQ1?
TPS62871QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62871QWRXSRQ1 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 TPS62871QWRXSRQ1?
For technical support, including TPS62871QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62871QWRXSRQ1 requirements.
6.How does Aetrix verify that TPS62871QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62871QWRXSRQ1 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 TPS62871QWRXSRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62871QWRXSRQ1?
All TPS62871QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62871QWRXSRQ1, 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 TPS62871QWRXSRQ1 part is unused and in its original packaging.
Return procedure for TPS62871QWRXSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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