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Texas Instruments TPS62870QWRXSRQ1
- Part No.:
- TPS62870QWRXSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62870QWRXSRQ1.pdf
- Description:
- IC REG BUCK ADJ 6A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,177
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Product details
Overview
TPS62870QWRXSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 6A continuous output current, supporting 2.7V–6V input, ±1% output voltage accuracy with differential remote sensing, and I²C interface for dynamic voltage scaling in infotainment and ADAS power rails.
For engineers reviewing the TPS62870QWRXSRQ1 datasheet, TPS62870QWRXSRQ1 pinout, TPS62870QWRXSRQ1 application, or TPS62870QWRXSRQ1 equivalent, key selection criteria include its 16-pin VQFN-FCRLF (RXS) package with wettable flanks, resistor-selectable switching frequency (1.5/2.25/2.5/3.0 MHz), I²C address 0x40, default startup voltage of 0.850V, and stackable architecture for scalable current delivery.
Technical Context
The TPS62870QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast load transients and low output voltage ripple, with integrated 7 mΩ high-side and 4.5 mΩ low-side MOSFETs enabling high efficiency at elevated ambient temperatures. Its differential remote sensing (VOSNS/GOSNS) ensures point-of-load regulation under varying PCB IR drops.
It supports dual operating modes-power-save for peak efficiency and forced-PWM for minimal output ripple-and offers flexible clocking via MODE/SYNC pin (external synchronization or spread-spectrum operation). The I²C interface enables real-time voltage adjustment, thermal warning monitoring, and fault reporting without requiring external controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports wide automotive battery rail variation including cold-crank and load-dump conditions. |
| Output Current | 6A continuous - sufficient for FPGA core, DDR memory, or multi-core SoC supply with margin at TJ ≤ 125°C. |
| Output Voltage Accuracy | ±1% - guaranteed over line, load, and temperature (–40°C to +125°C TA) with remote sense compensation. |
| Switching Frequency | 1.5 / 2.25 / 2.5 / 3.0 MHz - selectable via FSEL pin; enables compact magnetics and EMI optimization. |
| I²C Interface Speed | Up to 1 MHz - allows rapid voltage updates (e.g., DVFS) and telemetry reads without interrupting power delivery. |
| Thermal Protection | Thermal warning at 150°C TJ, shutdown at 170°C TJ - provides fail-safe response before silicon damage. |
| Package | RXS (VQFN-FCRLF, 16-pin, 2.55mm × 3.55mm × 1mm) with wettable flanks - supports automated optical inspection (AOI) and robust thermal conduction to PCB. |
Pinout & Package
RXS package is a 2.55mm × 3.55mm × 1mm VQFN with wettable flanks and exposed thermal pad soldered to GND for optimal thermal performance (RθJB = 7.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Control loop compensation node | Connects external RC network to GOSNS for stability tuning; must be shared across stacked devices. |
| GOSNS | Differential ground sense input | Measures return path voltage drop to enable true point-of-load regulation; rejects common-mode noise. |
| VOSNS | Differential output voltage sense input | Paired with GOSNS to close feedback loop at load; eliminates PCB trace resistance error. |
| EN | Enable control input | Active-high logic input (1.0V threshold); requires ≥15kΩ series resistor; interconnects in stacked configurations. |
| VIN (Pins 5,9) | Main power input | Accepts 2.7–6V; each pin must have local 5–10µF ceramic capacitor to GND for high-frequency decoupling. |
| GND (Pins 6,8) | Power ground reference | Low-inductance return path; connects directly to thermal pad for thermal and electrical integrity. |
| SW | Switch node | Drives external inductor; high dv/dt node requiring tight layout and minimized loop area. |
| PG | Open-drain power-good indicator | Signals valid regulation (92–98% undervoltage, 102–108% overvoltage window); tied together in stacks. |
| MODE/SYNC | Operating mode select / sync input | Pull-low = power-save; pull-high = forced-PWM; accepts external clock (1.3–3.3 MHz) for EMI reduction. |
| SDA / SCL | I²C bidirectional data / clock | Supports 1 MHz Fast Mode Plus; internal 10pF capacitance; requires external pullups to VIO (1.65–5.5V). |
| VSEL | Startup voltage select | Resistor-to-GND/VIN sets one of four factory-configured startup voltages (0.850V default); defines I²C address (0x40). |
| FSEL | Frequency select | Resistor-to-GND/VIN selects 1.5/2.25/2.5/3.0 MHz free-running frequency or enables sync mode. |
| SYNC_OUT | Internal clock output | Drives MODE/SYNC of next device in daisy-chained stack; pulled to GND via 47kΩ to designate secondary role. |
| VIO | I/O supply voltage | Accepts 1.65–5.5V; powers I²C interface and logic; independent from VIN for mixed-voltage system compatibility. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Enables ±1% DC accuracy at point-of-load by rejecting up to 100mV common-mode offset on VOSNS/GOSNS inputs. |
| Stackable architecture | Allows parallel connection of identical TPS62870QWRXSRQ1 units to scale output current while sharing COMP, EN, PG, and SYNC_OUT signals. |
| I²C programmability | Permits runtime output voltage adjustment, thermal warning threshold configuration, and fault status polling without hardware changes. |
| Adjustable external compensation | RC network on COMP pin enables loop stability optimization for diverse output capacitors (40µF–several mF) and inductors (55–330nH). |
| Active output discharge | Integrates 6Ω resistive or constant-current (50–200mA) discharge path to safely collapse VOUT during disable, preventing backfeed. |
| Wettable flank package | Facilitates automated AOI inspection of solder joints on bottom-side pins, critical for automotive zero-defect manufacturing requirements. |
Applications
| Infotainment Power Supply | ADAS Domain Controller Rail |
|---|---|
Use Scenario: Powers application processors and display controllers in automotive head units with dynamic voltage scaling requirements. IC Role / Device Role / Timing Role: Primary core voltage regulator with I²C-controlled DVFS to match CPU workload and reduce system power. Use Value: Enables 0.850V–3.35V output range in 1.25–10mV steps, supporting ISO 26262 ASIL-B compliant power sequencing and margin testing. |
Use Scenario: Supplies vision processor SoCs in camera radar fusion ECUs where transient response and thermal reliability are critical. IC Role / Device Role / Timing Role: High-current (6A) buck converter with fast transient recovery (<10µs) and thermal warning at 150°C TJ. Use Value: Differential remote sensing maintains <±1% regulation despite 50mΩ PCB trace resistance, ensuring stable AI accelerator operation. |
| FPGA Core Voltage | DDR Memory Termination |
Use Scenario: Delivers tightly regulated core voltage to Xilinx Zynq or Intel Agilex FPGAs in vehicle compute gateways. IC Role / Device Role / Timing Role: Synchronous step-down regulator with forced-PWM mode for lowest output ripple (<10mVpp) during high-speed configuration. Use Value: 7mΩ/4.5mΩ MOSFETs sustain 6A at 125°C ambient with RθJA = 28°C/W on EVM layout, eliminating need for heatsinks. |
Use Scenario: Provides precise 1.2V or 1.35V termination supply for LPDDR4/5 memory interfaces in digital clusters. IC Role / Device Role / Timing Role: Point-of-load regulator using VOSNS/GOSNS to compensate for voltage drop across memory module connectors. Use Value: ±1% accuracy over –40°C to +125°C ensures DDR timing margins remain intact across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62871QWRXSRQ1 | 9A rated, same RXS package, I²C address 0x41, default startup 0.750V | Higher current capability for larger SoCs or stacked configurations requiring >6A per phase | Select when system load exceeds 6A but board space prohibits adding second TPS62870QWRXSRQ1; shares identical footprint and layout. |
| TPS62903RTER | 6A non-automotive grade, 2.7–6.5V input, no AEC-Q100, no remote sense, smaller 2mm × 2mm WSON | Lacks differential sensing, thermal warning, and automotive qualification; intended for industrial/commercial use | Consider only for cost-sensitive non-automotive designs where ±1% accuracy and ASIL-ready features are not required. |
Compared with TPS62870QWRXSRQ1, TPS62871QWRXSRQ1 delivers 50% more current in identical form factor for future-proofing, while TPS62903RTER trades automotive reliability and precision for size and cost-making it unsuitable for safety-critical vehicle systems.
Availability
TPS62870QWRXSRQ1 is available at Aetrix Electronics and suitable for infotainment systems, ADAS domain controllers, and FPGA-based vehicle compute platforms requiring stable component supply with full AEC-Q100 Grade 1 compliance and long-term automotive lifecycle support.
Supply support for TPS62870QWRXSRQ1 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.
The TPS6287x-Q1 product line was designed specifically for high-current, high-reliability automotive power rails-including infotainment, ADAS, and digital cockpit subsystems-where fast transient response, differential sensing, and functional safety readiness are mandatory.
FAQ
What is the default I²C address and startup voltage for TPS62870QWRXSRQ1?
The TPS62870QWRXSRQ1 has a factory-configured I²C address of 0x40 and a default startup output voltage of 0.850V, set by connecting the VSEL pin to GND via a 6.2kΩ resistor. This pairing is fixed-changing VSEL resistance alters both startup voltage and I²C address simultaneously per TI's device options table.
Can TPS62870QWRXSRQ1 be used in stacked configurations, and what pins must be interconnected?
Yes, TPS62870QWRXSRQ1 supports stacking for higher current. Required interconnections include COMP (shared RC network), EN (via resistor or GPIO), PG (daisy-chained open-drain), and SYNC_OUT (to MODE/SYNC of next device). All stacked units must be identical TPS62870QWRXSRQ1 variants to prevent current imbalance.
Does TPS62870QWRXSRQ1 support spread-spectrum clocking, and how is it enabled?
Yes, TPS62870QWRXSRQ1 supports spread-spectrum operation to reduce EMI peaks. It is enabled by default in I²C-enabled variants like TPS62870QWRXSRQ1 and can be toggled via register write. When disabled, the device operates at fixed frequency determined by the FSEL pin setting (1.5/2.25/2.5/3.0 MHz).
What is the purpose of the VOSNS and GOSNS pins on TPS62870QWRXSRQ1?
VOSNS and GOSNS provide differential remote sensing for TPS62870QWRXSRQ1, measuring output voltage and return-path voltage directly at the load to eliminate regulation error caused by PCB trace resistance. This ensures ±1% DC accuracy regardless of board layout, critical for low-voltage, high-current rails like processor cores.
Is thermal warning functionality available on TPS62870QWRXSRQ1, and how is it signaled?
Yes, TPS62870QWRXSRQ1 includes thermal warning at 150°C junction temperature, signaled via the I²C interface (register bit) and optionally through the PG pin behavior in advanced configurations. It precedes thermal shutdown (170°C) to allow host processors time to throttle loads or initiate cooling measures before fault shutdown occurs.
TPS62870QWRXSRQ1 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:
- 6A
- 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)
TPS62870QWRXSRQ1 FAQ
1.How can I place an order for TPS62870QWRXSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62870QWRXSRQ1 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 TPS62870QWRXSRQ1 reliable?
The price and inventory of TPS62870QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62870QWRXSRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62870QWRXSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62870QWRXSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62870QWRXSRQ1?
TPS62870QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62870QWRXSRQ1 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 TPS62870QWRXSRQ1?
For technical support, including TPS62870QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62870QWRXSRQ1 requirements.
6.How does Aetrix verify that TPS62870QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62870QWRXSRQ1 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 TPS62870QWRXSRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62870QWRXSRQ1?
All TPS62870QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62870QWRXSRQ1, 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 TPS62870QWRXSRQ1 part is unused and in its original packaging.
Return procedure for TPS62870QWRXSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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