My Inquiry
My Account
Texas Instruments TPS62871N0QWRXSRQ1
- Part No.:
- TPS62871N0QWRXSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62871N0QWRXSRQ1.pdf
- Description:
- IC REG BUCK ADJ 9A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62871N0QWRXSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 9A continuous output current, operating from 2.7V–6V input, with ±1% output voltage accuracy, differential remote sensing, and 4.5mΩ/7mΩ internal MOSFETs. It targets high-current core supplies in ADAS and infotainment systems.
For engineers reviewing the TPS62871N0QWRXSRQ1 datasheet, TPS62871N0QWRXSRQ1 pinout, TPS62871N0QWRXSRQ1 application, or TPS62871N0QWRXSRQ1 equivalent, key selection criteria include its 9A rating, absence of I²C interface, resistor-selectable switching frequency (1.5–3.0 MHz), fixed start-up voltage (0.750 V), and VQFN-FCRLF (RXS) 16-pin wettable flanks package.
Technical Context
The TPS62871N0QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast load transients and low output voltage ripple. It supports forced-PWM or power-save operation via the MODE/SYNC pin and enables stacking with identical-current devices for higher output current or thermal spreading.
Differential remote sensing (VOSNS/GOSNS) ensures point-of-load regulation with better than ±1% DC accuracy across temperature and load. The device lacks I²C functionality-SDA and SCL pins must be tied to GND-and uses resistor-based configuration for switching frequency (FSEL) and start-up voltage (VSEL).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 9A continuous - supports high-power FPGA, ASIC, and DDR memory core rails without external current sharing circuitry. |
| Input Voltage Range | 2.7V to 6V - compatible with automotive 3.3V, 5V, and battery-supplied intermediate bus architectures. |
| Output Voltage Accuracy | ±1% - guaranteed DC regulation at point-of-load under full temperature (–40°C to +125°C) and load range. |
| Internal MOSFET RDS(on) | High-side: 7 mΩ, Low-side: 4.5 mΩ - enables high efficiency (>92% typical at 5VIN/0.75VOUT, 6A) and reduced thermal stress. |
| Switching Frequency | Resistor-selectable: 1.5 / 2.25 / 2.5 / 3.0 MHz - allows optimization of size (higher fSW → smaller L/C) vs. efficiency (lower fSW → lower switching loss). |
| Start-up Voltage | Fixed 0.750 V - factory-configured via VSEL short-to-GND; eliminates external resistor network for default boot voltage. |
| Thermal Protection | Thermal warning at 150°C, shutdown at 170°C - provides fail-safe operation in sealed automotive enclosures with limited airflow. |
Pinout & Package
TPS62871N0QWRXSRQ1 is housed in a 2.55mm × 3.55mm × 1mm VQFN-FCRLF (RXS) package with wettable flanks and an exposed thermal pad soldered to GND for optimal thermal performance (RθJA = 28°C/W on EVM).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Control loop compensation node | Connects external RC network to GOSNS; in stacked configurations, all COMP pins must be tied together for synchronized loop response. |
| VOSNS / GOSNS | Differential output voltage sense inputs | Enable point-of-load regulation; reject PCB trace IR drop to maintain ±1% accuracy at load terminals. |
| EN | Enable control input | Active-high logic; requires ≥15kΩ series resistor; interconnects across stacked devices for coordinated startup/shutdown. |
| MODE/SYNC | Operating mode select / external clock sync | Pull low for power-save mode (efficiency-optimized); pull high for forced-PWM (low ripple, best transient response); accepts external clock 1.3–3.3 MHz. |
| FSEL | Frequency select | Resistor-to-GND/VIN sets switching frequency; internal pulldown/pullup resistors (1.3–9 kΩ) allow precise 1.5/2.25/2.5/3.0 MHz selection. |
| VSEL | Start-up voltage select | Short-to-GND configures fixed 0.750 V startup; no external resistor needed - simplifies BOM and layout for default configuration. |
| SDA / SCL | I²C interface pins | Must be tied to GND - disabled in N0 variants; omission prevents accidental bus contention or floating-input noise coupling. |
| PG | Power-good open-drain output | Signals valid output regulation using window comparator (92–98% UV, 102–108% OV thresholds); daisy-chained in stacked mode with primary-only assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Stackable architecture | Enables parallel operation of multiple TPS62871N0QWRXSRQ1 units for >9A loads while distributing thermal dissipation across PCB area. |
| Differential remote sensing | Compensates for PCB trace resistance between converter and load, ensuring stable ±1% regulation even with 50 mΩ path impedance. |
| Adjustable external compensation | Allows fine-tuning of loop stability for diverse output capacitor types (e.g., MLCC, polymer) and values (40 µF–several mF). |
| Active output discharge | Provides controlled 50–200 mA constant-current or 6 Ω resistive discharge path to prevent floating outputs during disable or fault conditions. |
| Wettable flanks package | Enables automated optical inspection (AOI) of solder joints on RXS VQFN - critical for zero-defect automotive manufacturing compliance. |
Applications
| ADAS Sensor Fusion Module | FPGA-Based Domain Controller |
|---|---|
Use Scenario: Powering multi-core SoC and radar preprocessing ASIC in autonomous driving ECUs requiring tight voltage tolerance and rapid load-step response. IC Role / Device Role / Timing Role: Primary core supply regulator delivering 0.75V @ 9A with <500 µs output ramp time and <1% droop during 5A/µs transients. Use Value: Differential sensing maintains ±0.0075V regulation at SoC pads despite 30 mΩ board trace resistance; stackable design supports future 12A+ upgrades without layout change. |
Use Scenario: Supplying configurable logic and DSP blocks in vehicle central compute units where dynamic voltage scaling improves thermal management. IC Role / Device Role / Timing Role: High-current buck converter enabling fast VDDINT transitions via MODE/SYNC-controlled forced-PWM mode during burst computation phases. Use Value: Resistor-selectable 2.25 MHz switching frequency allows compact 150 nH inductor and 47 µF ceramic output capacitance, reducing solution footprint by 35% vs. 1 MHz designs. |
| Infotainment Head Unit SoC | Automotive DDR4 Memory Subsystem |
Use Scenario: Regulating processor core voltage in digital cockpit systems operating continuously at ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: Automotive-grade DC/DC with AEC-Q100 Grade 1 qualification and 150°C thermal warning flag for predictive thermal throttling. Use Value: 4.5 mΩ low-side MOSFET minimizes conduction loss at 9A, achieving 93.2% peak efficiency at 3.3VIN/0.8VOUT, reducing heatsink requirements. |
Use Scenario: Providing stable 1.2V supply to DDR4 memory interfaces with stringent ripple (<20 mVpp) and sequencing requirements. IC Role / Device Role / Timing Role: Synchronous buck converter with forced-PWM mode and 3.0 MHz switching to suppress switching noise near memory data eye diagrams. Use Value: PG output with 40 µs deglitch time synchronizes memory initialization sequence; remote sensing rejects VRM-to-DRAM plane IR drop for reliable 1.2V±12 mV margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62871QWRXSRQ1 | I²C interface enabled; programmable start-up voltage (0.750 V default) and I²C address (0x41); SDA/SCL functional. | Required when dynamic voltage scaling, telemetry monitoring (temperature, VOUT), or multi-rail coordination via I²C bus is needed. | Select TPS62871QWRXSRQ1 if firmware-controlled voltage adjustment or real-time health monitoring is required; otherwise, TPS62871N0QWRXSRQ1 reduces BOM count and layout complexity. |
| MPQ4436-AEC1 | Monolithic 10A buck; no remote sensing; fixed 600 kHz–3 MHz frequency; no stacking support; different pinout (20-pin QFN). | Suitable for single-device 10A applications without point-of-load sensing or current scalability; lacks thermal warning and wettable flanks. | Choose MPQ4436-AEC1 only for cost-sensitive, non-stacking designs where ±2% output accuracy and absence of thermal warning are acceptable. |
Compared with TPS62871QWRXSRQ1, the TPS62871N0QWRXSRQ1 removes I²C overhead for simpler, more deterministic power sequencing - ideal for safety-critical boot paths. Versus MPQ4436-AEC1, it delivers superior accuracy, thermal intelligence, and scalable current via stacking, at the cost of slightly higher pin count and configuration flexibility.
Availability
TPS62871N0QWRXSRQ1 is available at Aetrix Electronics and suitable for automotive ADAS, infotainment, and domain controller designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS62871N0QWRXSRQ1 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 ICs, with decades of automotive qualification expertise and functional safety documentation support.
The TPS6287x-Q1 product line was designed specifically for high-current, high-reliability automotive power rails - emphasizing fast transient response, differential sensing, thermal resilience, and AEC-Q100 Grade 1 operation from –40°C to +125°C.
FAQ
What is the default start-up output voltage of the TPS62871N0QWRXSRQ1?
The TPS62871N0QWRXSRQ1 has a factory-configured fixed start-up output voltage of 0.750 V, achieved by internally connecting the VSEL pin to GND. No external resistor is required, simplifying design and eliminating tolerance-related drift in the boot voltage setting.
Does the TPS62871N0QWRXSRQ1 support stacking with other devices?
Yes, the TPS62871N0QWRXSRQ1 supports stacking with identical-current TPS6287x-Q1 devices (e.g., another TPS62871N0QWRXSRQ1) using SYNC_OUT → MODE/SYNC daisy-chaining. Stacking enables higher output current and distributed thermal management, but all devices in a stack must share the same current rating (9A).
How should the SDA and SCL pins be handled on the TPS62871N0QWRXSRQ1?
Because the TPS62871N0QWRXSRQ1 is an I²C-disabled variant, the SDA and SCL pins must be externally tied to GND. Leaving them floating risks noise coupling or undefined logic states; connecting them to GND ensures predictable behavior and avoids potential bus conflicts in system-level layouts.
What thermal protection features does the TPS62871N0QWRXSRQ1 provide?
The TPS62871N0QWRXSRQ1 includes thermal warning at 150°C (TJ rising) with 20°C hysteresis and thermal shutdown at 170°C (TJ rising) with 20°C hysteresis. These features enable early system-level thermal mitigation and hard fault protection - critical for unventilated automotive modules operating up to +125°C ambient.
Can the TPS62871N0QWRXSRQ1 operate without external compensation components?
No, the TPS62871N0QWRXSRQ1 requires external compensation components (resistor and capacitor from COMP to GOSNS) to stabilize the control loop. The device does not include internal compensation; omitting the network results in instability, oscillation, or poor transient response - especially with low-ESR ceramic output capacitors.
TPS62871N0QWRXSRQ1 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)
TPS62871N0QWRXSRQ1 FAQ
1.How can I place an order for TPS62871N0QWRXSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62871N0QWRXSRQ1 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 TPS62871N0QWRXSRQ1 reliable?
The price and inventory of TPS62871N0QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62871N0QWRXSRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62871N0QWRXSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62871N0QWRXSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62871N0QWRXSRQ1?
TPS62871N0QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62871N0QWRXSRQ1 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 TPS62871N0QWRXSRQ1?
For technical support, including TPS62871N0QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62871N0QWRXSRQ1 requirements.
6.How does Aetrix verify that TPS62871N0QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62871N0QWRXSRQ1 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 TPS62871N0QWRXSRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62871N0QWRXSRQ1?
All TPS62871N0QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62871N0QWRXSRQ1, 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 TPS62871N0QWRXSRQ1 part is unused and in its original packaging.
Return procedure for TPS62871N0QWRXSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62871N0QWRXSRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
