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Texas Instruments TPS62870N0QWRXSRQ1
- Part No.:
- TPS62870N0QWRXSRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62870N0QWRXSRQ1.pdf
- Description:
- IC REG BUCK ADJ 6A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
TPS62870N0QWRXSRQ1 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, 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 TPS62870N0QWRXSRQ1 datasheet, TPS62870N0QWRXSRQ1 pinout, TPS62870N0QWRXSRQ1 application, or TPS62870N0QWRXSRQ1 equivalent, key selection criteria include its I²C-free design (SDA/SCL grounded), fixed 0.5V startup voltage, 0.5ms soft-start, spread-spectrum clocking enabled by default, and compatibility with stacked configurations for higher-current systems.
Technical Context
The TPS62870N0QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast transient response in automotive core supplies. It uses internal 7mΩ high-side and 4.5mΩ low-side MOSFETs, supports resistor-selectable switching frequencies (1.5/2.25/2.5/3.0 MHz), and operates in forced-PWM or power-save mode via MODE/SYNC pin control.
Differential remote sensing (VOSNS/GOSNS) enables precise regulation at the load under dynamic conditions. Thermal warning (150°C) and shutdown (170°C) are integrated, and active output discharge provides controlled rail collapse during disable - all within a 2.55mm × 3.55mm VQFN-FCRLF (RXS) package with wettable flanks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports wide automotive battery range including cold-crank (≥2.7V) and load-dump transients (≤6V). |
| Output Current | 6A continuous - rated for sustained operation at TJ ≤ 150°C with proper PCB thermal design. |
| Output Voltage Accuracy | ±1% - achieved via differential remote sensing and internal reference, ensuring stable core supply under load/temperature variation. |
| Startup Voltage | 0.500V - factory-set via VSEL pin configuration (6.2kΩ to GND), enabling immediate regulation at ultra-low output levels. |
| Switching Frequency | Resistor-selectable: 1.5/2.25/2.5/3.0 MHz - allows EMI optimization and inductor size trade-offs without changing layout. |
| Soft-Start Time | 0.5ms - limits inrush current during power-up, reducing stress on input capacitors and upstream converters. |
| Thermal Warning Threshold | 150°C junction - triggers early thermal alert before shutdown, enabling system-level thermal management response. |
Pinout & Package
TPS62870N0QWRXSRQ1 is housed in a 16-pin RXS VQFN-FCRLF package (2.55mm × 3.55mm × 1mm) with wettable flanks and an 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 | Connect external RC network to GOSNS to stabilize feedback; required for stability across all operating conditions. |
| GOSNS | Differential ground sense input | Measures return path voltage drop to enable true point-of-load regulation; must be routed as matched pair with VOSNS. |
| VOSNS | Differential output voltage sense input | Directly monitors output rail at load; combined with GOSNS, achieves ±1% accuracy independent of PCB IR drop. |
| 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 | Two dedicated VIN pins reduce trace inductance; each requires local ceramic capacitor (5–10µF) to GND per pin. |
| GND (Pins 6,8) | Power ground | Low-impedance return path for high di/dt currents; connects directly to thermal pad for thermal and electrical integrity. |
| SW | Switch node | High-frequency switching node connecting internal FETs to external inductor; requires tight layout and minimal parasitic capacitance. |
| PG | Power-good open-drain output | Signals valid regulation (92–98% undervoltage / 102–108% overvoltage window); pulled high externally when used. |
| MODE/SYNC | Operating mode select / sync input | Pull low for power-save mode (efficiency), pull high for forced-PWM (low ripple); accepts external clock for synchronization. |
| VSEL | Startup voltage select | Configured by resistor to GND/VIN; for TPS62870N0QWRXSRQ1: 6.2kΩ to GND sets 0.500V startup. |
| FSEL | Frequency select | Resistor-programmable switching frequency; default setting enables spread-spectrum operation to reduce EMI peaks. |
| SDA / SCL | I²C interface pins | Internally disabled in N0 variants; must be tied to GND per datasheet to prevent floating inputs and ensure reliable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Enables ±1% output voltage accuracy at point-of-load by rejecting PCB trace resistance effects - critical for FPGA/ASIC core rails. |
| Stackable architecture | Supports parallel operation with identical-current devices (e.g., two TPS62870N0QWRXSRQ1) to double output current while sharing thermal load. |
| Spread-spectrum clocking (default) | Reduces peak EMI by ±10% frequency dithering - eliminates need for additional EMI filters in space-constrained automotive modules. |
| Active output discharge | Provides controlled 50–200mA constant-current discharge path when disabled, preventing floating outputs and ensuring safe power sequencing. |
| Thermal warning & shutdown | 150°C warning flag and 170°C shutdown with 20°C hysteresis allow predictive thermal throttling and fail-safe system response. |
Applications
| Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
|
Use Scenario: Powers SoC, display controller, and audio DSP in automotive head units requiring clean, tightly regulated 0.8V–1.2V core rails. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with differential remote sensing to maintain ±1% accuracy despite long PCB traces between converter and SoC. Use Value: Eliminates need for external sense resistors or post-regulation LDOs, reducing BOM count and board area while meeting AEC-Q100 Grade 1 reliability. |
Use Scenario: Supplies image sensor and ISP in surround-view or driver-monitoring cameras operating in ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: High-efficiency 6A step-down converter with forced-PWM mode enabled for lowest output ripple during high-frame-rate video capture. Use Value: Maintains stable 1.8V output under rapid load transients (e.g., LED flash activation), preventing image corruption or sensor reset. |
| FPGA Core Supply | DDR Memory Termination |
|
Use Scenario: Delivers dynamically adjustable 0.75V–1.0V core voltage to Xilinx Zynq or Intel Cyclone automotive-grade FPGAs. IC Role / Device Role / Timing Role: Fixed-frequency DCS-Control buck with fast transient response (<10µs recovery) to handle FPGA logic reconfiguration current spikes. Use Value: Achieves <50mV droop during 4A/µs load steps - avoids timing violations and ensures deterministic FPGA operation. |
Use Scenario: Provides precision 1.2V or 1.35V termination voltage (VTT) for LPDDR4/DDR5 memory interfaces in telematics gateways. IC Role / Device Role / Timing Role: Low-noise, high-accuracy buck converter with active discharge to meet DDR VTT ramp-down requirements per JEDEC spec. Use Value: Enables 0.5ms soft-start and controlled discharge - satisfies DDR memory initialization timing and prevents data bus contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62870QWRXSRQ1 | I²C interface enabled (0x40 address), 0.850V startup, 1ms soft-start, no spread-spectrum by default | Required where dynamic voltage scaling or real-time telemetry (temp/voltage monitoring) is needed | Select when firmware-controlled output adjustment or health monitoring is mandatory; requires SDA/SCL routing and I²C host. |
| MPQ4436-AEC1 | Monolithic 6A buck, 2.5V–6.5V input, no remote sensing, ±1.5% output accuracy, QFN-13 package | Suitable for cost-sensitive non-core rails where ±1% accuracy and point-of-load regulation are not required | Choose for simpler designs without differential sensing needs; lower integration but lacks stackability and thermal warning features. |
Compared with TPS62870QWRXSRQ1, the TPS62870N0QWRXSRQ1 trades I²C configurability for reduced BOM complexity and guaranteed spread-spectrum EMI reduction, while MPQ4436-AEC1 offers lower cost but sacrifices remote sensing, stackability, and thermal diagnostics essential for safety-critical core supplies.
Availability
TPS62870N0QWRXSRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and FPGA-based telematics gateways requiring stable component supply, AEC-Q100 qualification, and functional safety support documentation.
Supply support for TPS62870N0QWRXSRQ1 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 ISO/TS 16949-certified manufacturing.
The TPS6287x-Q1 product line was designed specifically for high-current, high-reliability automotive power rails - targeting infotainment, ADAS, and domain controller applications demanding fast transient response, differential sensing, and functional safety readiness.
FAQ
What is the startup output voltage of TPS62870N0QWRXSRQ1, and how is it set?
The TPS62870N0QWRXSRQ1 has a factory-configured startup output voltage of 0.500V, selected by connecting a 6.2kΩ resistor from the VSEL pin to GND. This value is fixed for the N0 variant and cannot be changed via I²C since the interface is disabled. The startup voltage defines the initial regulation level before any external programming occurs - critical for systems requiring known power-on behavior.
Does TPS62870N0QWRXSRQ1 support stacking with other devices, and what are the constraints?
Yes, TPS62870N0QWRXSRQ1 supports stacking with identical-current devices (e.g., another TPS62870N0QWRXSRQ1) to increase total output current. All stacked devices must share COMP, EN, PG, and MODE/SYNC connections, and use identical FSEL/VSEL configurations. Stacking with higher-current variants (e.g., TPS62871-Q1) is prohibited - mismatched current ratings cause premature current limiting and thermal imbalance.
How should the SDA and SCL pins be handled on TPS62870N0QWRXSRQ1?
On TPS62870N0QWRXSRQ1, the SDA and SCL pins are internally disabled (no I²C functionality). Per TI's datasheet Section 5 and Table 4-2, both pins must be connected to GND using low-inductance traces. Leaving them floating risks noise coupling, undefined logic states, and potential latch-up - grounding ensures robust operation and meets AEC-Q100 EMC requirements.
What is the thermal performance of TPS62870N0QWRXSRQ1 in typical automotive PCB layouts?
In standard 4-layer automotive PCBs with 2oz copper and thermal vias under the exposed pad, TPS62870N0QWRXSRQ1 achieves RθJB = 7.7°C/W. At 6A output and 3.3V input, junction temperature rise is ~46°C above ambient - well within the –40°C to +150°C operating range. Derating begins above 125°C ambient; full 6A is sustainable up to 105°C ambient with adequate copper area.
Is spread-spectrum clocking enabled by default on TPS62870N0QWRXSRQ1, and can it be disabled?
Yes, spread-spectrum clocking is enabled by default on TPS62870N0QWRXSRQ1 per Table 4-2. It cannot be disabled through pins or registers - the N0 variant has fixed factory settings for spread-spectrum (ON), soft-start (0.5ms), and startup voltage (0.500V). This simplifies design for EMI-sensitive applications like radar or camera modules where spectral spreading is mandatory.
TPS62870N0QWRXSRQ1 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)
TPS62870N0QWRXSRQ1 FAQ
1.How can I place an order for TPS62870N0QWRXSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62870N0QWRXSRQ1 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 TPS62870N0QWRXSRQ1 reliable?
The price and inventory of TPS62870N0QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62870N0QWRXSRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62870N0QWRXSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62870N0QWRXSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62870N0QWRXSRQ1?
TPS62870N0QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62870N0QWRXSRQ1 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 TPS62870N0QWRXSRQ1?
For technical support, including TPS62870N0QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62870N0QWRXSRQ1 requirements.
6.How does Aetrix verify that TPS62870N0QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62870N0QWRXSRQ1 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 TPS62870N0QWRXSRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62870N0QWRXSRQ1?
All TPS62870N0QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62870N0QWRXSRQ1, 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 TPS62870N0QWRXSRQ1 part is unused and in its original packaging.
Return procedure for TPS62870N0QWRXSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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