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Texas Instruments TPS62871Y5QWRXSRQ1
- Part No.:
- TPS62871Y5QWRXSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62871Y5QWRXSRQ1.pdf
- Description:
- IC REG BUCK PROG 9A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,550
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Product details
Overview
TPS62871Y5QWRXSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 9A continuous output current, supporting 2.7V–6V input, 0.4V–3.35V programmable output voltage with ±1% DC accuracy, and differential remote sensing for point-of-load regulation in infotainment and ADAS power rails.
For engineers reviewing the TPS62871Y5QWRXSRQ1 datasheet, TPS62871Y5QWRXSRQ1 pinout, TPS62871Y5QWRXSRQ1 application, or TPS62871Y5QWRXSRQ1 equivalent, key selection factors include I²C-configurable startup voltage (1.100V/1.500V/1.750V/3.300V), resistor-selectable switching frequency (1.5/2.25/2.5/3.0 MHz), stackable architecture for current scaling, and thermal warning/shutdown at 150°C/170°C junction.
Technical Context
The TPS62871Y5QWRXSRQ1 implements a fixed-frequency DCS-Control topology with fast transient response and supports both power-save mode (for peak efficiency) and forced-PWM mode (for minimal output ripple and best load-step performance). Its dual-MOSFET structure features 7 mΩ high-side and 4.5 mΩ low-side RDS(on) at 3.3V VIN, enabling high-efficiency operation at elevated ambient temperatures.
Differential remote sensing (VOSNS/GOSNS) enables precise regulation at the load, while the I²C interface (up to 1 MHz) provides real-time voltage monitoring, thermal warnings, and dynamic output voltage adjustment. The device supports external clock synchronization or spread-spectrum operation to reduce EMI, and its stackable design allows parallel operation with matched-current devices for higher current or thermal spreading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6 V - supports wide automotive battery range including cold-crank and load-dump conditions. |
| Output Current | 9 A continuous - rated for sustained operation at TJ ≤ 150°C with proper PCB thermal design. |
| Output Voltage Accuracy | ±1% - guaranteed over line, load, and temperature (–40°C to +125°C TA) with remote sensing enabled. |
| Switching Frequency | 1.5 / 2.25 / 2.5 / 3.0 MHz - selectable via FSEL pin resistor; enables optimization of size vs. efficiency vs. EMI. |
| I²C Interface Speed | Up to 1 MHz - supports fast configuration and telemetry updates without interrupting power delivery. |
| Junction Temperature Range | –40°C to +150°C - qualified for automotive Grade 1 operation with thermal warning at 150°C and shutdown at 170°C. |
| Startup Voltage Options | 1.100 V, 1.500 V, 1.750 V, 3.300 V - selected via VSEL pin resistor network; I²C address tied to chosen voltage (0x10–0x13). |
Pinout & Package
TPS62871Y5QWRXSRQ1 is housed in a 2.55 mm × 3.55 mm × 1 mm VQFN package with wettable flanks (RXS, 16-pin), requiring soldered thermal pad to GND for thermal management (RθJA = 43.2°C/W JEDEC, 28°C/W EVM).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Control loop compensation node | Connects external RC network to GOSNS to stabilize feedback loop; must be shared across stacked devices. |
| VOSNS / GOSNS | Differential output voltage sense inputs | Enable point-of-load regulation; reject PCB trace IR drop for ±1% accuracy under all operating conditions. |
| EN | Enable control input | Active-high logic; requires ≥15 kΩ series resistor; interconnects across stacked devices for coordinated startup. |
| MODE/SYNC | Operating mode select / sync input | Pull low for power-save mode; pull high for forced-PWM; accepts external clock (1.3–3.3 MHz) for synchronization. |
| SDA / SCL | I²C bidirectional data / clock | Supports voltage monitoring, thermal alerts, and dynamic VOUT adjustment; pulled up externally; tied to GND for secondary stack devices. |
| VSEL / FSEL | Startup voltage / frequency select | Resistor-programmable pins; VSEL sets one of four factory-mapped startup voltages and I²C addresses; FSEL selects switching frequency. |
| SYNC_OUT | Internal clock output | Daisy-chains to MODE/SYNC of next device in stack; identifies primary/secondary role during startup via 47 kΩ-to-GND configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Enables <1% total output error at point-of-load by rejecting PCB trace resistance effects - critical for FPGA core and DDR memory rails. |
| Stackable architecture | Allows parallel operation of multiple TPS62871Y5QWRXSRQ1 units to scale current beyond 9A or distribute thermal load across PCB area. |
| I²C-configurable startup voltage | Four factory-assigned VOUT options (1.100V/1.500V/1.750V/3.300V) with corresponding I²C addresses (0x10–0x13) simplify boot sequencing in multi-rail systems. |
| Thermal warning & shutdown | Provides early system alert at 150°C TJ and hard shutdown at 170°C - meets ASIL-B functional safety requirements for automotive subsystems. |
| Active output discharge | Integrates controlled 50–200 mA constant-current discharge path to prevent floating outputs during disable, improving system reliability. |
Applications
| Infotainment Power Supply | ADAS Domain Controller Core Rail |
|---|---|
Use Scenario: Powering SoC cores and GPU in automotive head units with dynamic workload-dependent voltage scaling. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with I²C-controlled VOUT adjustment to match processor DVFS states. Use Value: Enables real-time voltage scaling via I²C to reduce dynamic power consumption without hardware reconfiguration. |
Use Scenario: Delivering stable 0.85V–1.1V core supply to radar or vision processing SoCs in autonomous driving ECUs. IC Role / Device Role / Timing Role: High-accuracy, low-noise step-down converter with remote sensing to maintain tight voltage tolerance under rapid load transients. Use Value: ±1% DC accuracy and fast DCS-Control transient response ensure reliable operation during sensor fusion compute bursts. |
| FPGA Core Voltage Regulation | DDR Memory VDDQ Supply |
Use Scenario: Providing tightly regulated core voltage (e.g., 0.75V–0.85V) to Xilinx or Intel automotive FPGAs in reconfigurable ADAS modules. IC Role / Device Role / Timing Role: High-current buck converter with differential sensing and active discharge for safe power-down sequencing. Use Value: Active output discharge prevents back-powering of FPGA I/O banks during reset, eliminating latch-up risk. |
Use Scenario: Supplying DDR4/DDR5 VDDQ (1.2V/1.1V) with low ripple and fast transient recovery in telematics gateways. IC Role / Device Role / Timing Role: Synchronous buck with forced-PWM mode and 3.0 MHz switching to minimize output capacitor count and board space. Use Value: 3.0 MHz operation reduces required COUT volume by >50% versus 1.5 MHz designs while maintaining <10 mVpp ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62872Y4QWRXSRQ1 | 12A rating, same package, 0.850V/0.750V/0.875V/0.850V startup options, I²C address 0x40–0x43 | Higher current capability; suitable where 9A margin is insufficient or thermal headroom is constrained | Select when system peak load exceeds 9A or when derating for extended high-temperature operation is required. |
| TPS62871N4QWRXSRQ1 | No I²C interface; fixed VOUT startup options (0.500V/0.750V/0.875V/1.08V); same 9A rating and RXS package | Lacks dynamic voltage control and telemetry; simpler BOM but no runtime configuration or monitoring | Select for cost-sensitive, static-voltage applications where I²C functionality is unnecessary and startup voltage matches system needs. |
Compared with TPS62871Y5QWRXSRQ1, TPS62872Y4QWRXSRQ1 offers higher current headroom and identical feature set but requires layout verification for increased thermal dissipation, while TPS62871N4QWRXSRQ1 removes I²C complexity and telemetry at the cost of configurability - making it suitable only for fixed-voltage, non-telemetric designs.
Availability
TPS62871Y5QWRXSRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and FPGA-based reconfigurable computing platforms requiring stable component supply, AEC-Q100 compliance, and functional safety support.
Supply support for TPS62871Y5QWRXSRQ1 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 ISO/TS 16949-certified manufacturing.
The TPS6287x-Q1 product line was designed specifically for high-current, high-accuracy automotive power rails - targeting infotainment, ADAS, and digital core supplies where fast transient response, remote sensing, and functional safety readiness are mandatory.
FAQ
What is the default startup voltage for TPS62871Y5QWRXSRQ1?
The TPS62871Y5QWRXSRQ1 has four factory-programmed startup voltage options: 1.100 V (I²C address 0x10), 1.500 V (0x11), 1.750 V (0x12), and 3.300 V (0x13). Selection is determined by the resistor network on the VSEL pin per Table 4-1. No single "default" applies - the specific variant TPS62871Y5QWRXSRQ1 maps to the 1.100 V / 0x10 configuration unless otherwise specified in order documentation.
Does TPS62871Y5QWRXSRQ1 support stacking with other current ratings?
No. TPS62871Y5QWRXSRQ1 must only be stacked with identical 9A-rated devices (e.g., other TPS62871Y5QWRXSRQ1 units). Mixing with 6A, 12A, or 15A variants risks unbalanced current sharing and premature current-limit triggering in the lower-rated unit. Stacking requires synchronized MODE/SYNC and shared COMP/VOSNS/GOSNS connections per Section 7.3.17.
What is the maximum supported I²C clock frequency for TPS62871Y5QWRXSRQ1?
The TPS62871Y5QWRXSRQ1 supports I²C Fast Mode Plus operation up to 1 MHz, as confirmed in Section 6.6 of the datasheet. This enables rapid register reads/writes for dynamic voltage adjustment and thermal status polling without disrupting power delivery - essential for real-time power management in automotive SoC applications.
How does the thermal warning feature work on TPS62871Y5QWRXSRQ1?
The TPS62871Y5QWRXSRQ1 asserts a thermal warning flag via I²C register (TWARN bit) when junction temperature reaches 150°C, with 20°C hysteresis. This provides early system-level alert before thermal shutdown at 170°C. The warning is readable over I²C and can trigger firmware throttling - a key functional safety mechanism documented in TI's FS-RTM for TPS6287x-Q1.
Can TPS62871Y5QWRXSRQ1 operate without I²C communication enabled?
Yes. TPS62871Y5QWRXSRQ1 functions as a fully operational buck converter without I²C - startup voltage, switching frequency, and operating mode are set by VSEL/FSEL/MODE-SYNC pins. I²C is optional for telemetry and dynamic control; unused SDA/SCL pins require external pull-up resistors but need no active controller to enable basic regulation.
TPS62871Y5QWRXSRQ1 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:
- Programmable
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-VQFN (2.55x3.55)
TPS62871Y5QWRXSRQ1 FAQ
1.How can I place an order for TPS62871Y5QWRXSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62871Y5QWRXSRQ1 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 TPS62871Y5QWRXSRQ1 reliable?
The price and inventory of TPS62871Y5QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62871Y5QWRXSRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62871Y5QWRXSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62871Y5QWRXSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62871Y5QWRXSRQ1?
TPS62871Y5QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62871Y5QWRXSRQ1 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 TPS62871Y5QWRXSRQ1?
For technical support, including TPS62871Y5QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62871Y5QWRXSRQ1 requirements.
6.How does Aetrix verify that TPS62871Y5QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62871Y5QWRXSRQ1 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 TPS62871Y5QWRXSRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62871Y5QWRXSRQ1?
All TPS62871Y5QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62871Y5QWRXSRQ1, 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 TPS62871Y5QWRXSRQ1 part is unused and in its original packaging.
Return procedure for TPS62871Y5QWRXSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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