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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments TPS62870Y3QWRXSRQ1

Name: TPS62870Y3QWRXSRQ1
Brand: Texas Instruments
SKU: TPS62870Y3QWRXSRQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS62870Y3QWRXSRQ1

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-TFQFN Exposed Pad

Datasheet:: TPS62870Y3QWRXSRQ1.pdf

Description:: IC REG BUCK ADJ 6A 16VQFN

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Product details

Overview

TPS62870Y3QWRXSRQ1 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 (±1% accuracy), and differential remote sensing for point-of-load regulation in high-reliability infotainment and ADAS power rails.

For engineers reviewing the TPS62870Y3QWRXSRQ1 datasheet, TPS62870Y3QWRXSRQ1 pinout, TPS62870Y3QWRXSRQ1 application, or TPS62870Y3QWRXSRQ1 equivalent, key selection criteria include I²C-configurable startup voltage (0.810V default), resistor-selectable switching frequency (1.5/2.25/2.5/3.0 MHz), thermal warning/thermal shutdown thresholds (150°C/170°C), stackable architecture for current scaling, and wettable-flank VQFN-16 (RXS) package compatibility with automotive PCB assembly requirements.

Technical Context

The TPS62870Y3QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast transient response and low output voltage ripple, enabling stable core supply for FPGA, ASIC, and DDR memory subsystems under dynamic load conditions. Its dual-MOSFET power stage features 7 mΩ high-side and 4.5 mΩ low-side R_DS(on), supporting high efficiency at ambient temperatures up to +125°C.

It integrates an I²C interface (up to 1 MHz) for real-time voltage monitoring, thermal warnings, and dynamic output adjustment-paired with MODE/SYNC pin control for forced-PWM or power-save operation and external clock synchronization. Remote sense pins (VOSNS/GOSNS) enable ±1% DC accuracy across line, load, and temperature via differential feedback.

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 (≥2.7 V) and load-dump transients (≤6 V).
Output Current	6 A continuous - rated for sustained operation at TJ = –40°C to +150°C with proper thermal design.
Output Voltage Accuracy	±1% - guaranteed DC accuracy over full operating temperature (–40°C to +125°C TA) and line/load conditions using differential remote sensing.
Switching Frequency	1.5 / 2.25 / 2.5 / 3.0 MHz - selectable via FSEL pin resistor; enables optimization of size (higher fSW → smaller L/C) vs. efficiency.
I²C Interface Speed	Up to 1 MHz - supports fast configuration updates and telemetry reads without CPU overhead in safety-critical systems.
Startup Output Voltage	0.810 V (default, I²C address 0x40) - factory-set via VSEL pin (6.2 kΩ to GND); four configurable startup voltages per device variant.
Thermal Protection	Thermal warning at 150°C TJ, shutdown at 170°C TJ - provides fail-safe derating and system-level thermal management signaling.

Pinout & Package

TPS62870Y3QWRXSRQ1 is housed in a 2.55 mm × 3.55 mm × 1.0 mm RXS (VQFN-FCRLF, 16-pin) package with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive applications. The exposed thermal pad must be soldered to GND for optimal thermal performance (R_θJA = 28°C/W on EVM).

Pin/Terminal	Circuit Role	Design Meaning
1 - COMP	Control loop compensation node	Connects external RC network to GOSNS to stabilize DCS-Control loop; required for stability in all configurations including stacked operation.
2 - GOSNS	Differential ground sense input	Measures return path voltage drop to enable true point-of-load regulation; rejects PCB trace IR drop and improves accuracy beyond ±1%.
3 - VOSNS	Differential output voltage sense input	Monitors regulated rail directly at load; used with GOSNS to cancel common-mode noise and improve transient immunity.
4 - EN	Enable control input	Active-high logic input (VIH ≥ 0.9 V); requires ≥15 kΩ series resistor; interconnects across stacked devices for coordinated startup/shutdown.
5,9 - VIN	Main power input	Two independent input pins reduce parasitic inductance; each requires local ceramic capacitor (5–10 µF) to GND for high-frequency decoupling.
6,8 - GND	Power ground	Low-impedance return paths for high di/dt switching currents; must be connected to thermal pad and system ground plane.
7 - SW	Power switch node	Connects internal high/low-side MOSFETs; drives external inductor; requires tight layout to minimize EMI and voltage ringing.
10 - PG	Open-drain power-good indicator	Signals valid output (92–98% UVLO, 102–108% OVLO window); tied together in stacked mode with primary device driving output.
11 - MODE/SYNC	Operating mode select / sync input	Pull low for power-save mode (efficiency), pull high for forced-PWM (low ripple); accepts external clock (1.3–3.3 MHz) for EMI reduction.
12 - SDA	I²C serial data (bidirectional)	Requires external pullup; connects to processor I²C bus; grounded for secondary devices in stacked configuration.
13 - SCL	I²C serial clock (input)	Requires external pullup; clock input for I²C communication; grounded for secondary devices in stacked configuration.
14 - SYNC_OUT	Internal clock output	Drives MODE/SYNC of next device in daisy-chain stack; floating in single-device use; defines secondary role when pulled to GND via 47 kΩ.
15 - VSEL	Startup voltage select	Resistor-to-GND/VIN sets one of four factory-programmed startup voltages (0.810 V default for TPS62870Y3QWRXSRQ1).
16 - FSEL	Frequency select	Resistor-to-GND/VIN selects 1.5/2.25/2.5/3.0 MHz free-running frequency or enables external sync mode.

Key Features

Feature	Design Value
Differential remote sensing (VOSNS + GOSNS)	Enables ±1% output regulation at the load, eliminating PCB trace resistance errors and improving dynamic accuracy under load steps.
Stackable architecture (up to 4 devices)	Allows scalable current delivery (e.g., two 6A devices = 12A) with automatic current sharing and synchronized switching to reduce input/output ripple.
I²C interface with 1 MHz support	Permits runtime voltage adjustment, telemetry readback (temperature, voltage), and fault flag monitoring without hardware changes or additional GPIOs.
Adjustable external compensation (COMP pin)	Supports optimization of transient response and phase margin across varied output capacitors, inductors, and load conditions.
Thermal warning + shutdown (150°C / 170°C)	Provides early overtemperature alert (TW) and hard shutdown (TSD) with 20°C hysteresis, enabling predictive thermal management in enclosed modules.
Wettable flank VQFN-16 (RXS) package	Facilitates automated AOI of solder joints and improves mechanical reliability under thermal cycling and vibration in automotive environments.

Applications

Infotainment Power Supply	ADAS Domain Controller Rail
Use Scenario: Powers SoC cores and GPU in automotive head units requiring stable 0.8–1.2 V at up to 6 A with fast load transients during UI rendering or video decode. IC Role / Device Role / Timing Role: Primary buck regulator with differential remote sensing and I²C-adjustable voltage to match dynamic DVFS profiles. Use Value: Maintains ±1% output accuracy at point-of-load despite PCB IR drop, reducing need for margin and enabling lower-voltage SoC operation.	Use Scenario: Supplies vision processor and radar SoC in centralized ADAS ECUs where thermal density and EMI sensitivity demand high-efficiency, low-noise regulation. IC Role / Device Role / Timing Role: High-current, stackable DC/DC with forced-PWM mode and spread-spectrum clocking to suppress conducted EMI in safety-critical signal chains. Use Value: Achieves >92% peak efficiency at 6 A/0.85 V while meeting CISPR-25 Class 5 radiated emissions limits via synchronized multi-phase operation.
FPGA Core Voltage Rail	DDR4/DDR5 Memory VDDQ Supply
Use Scenario: Delivers tightly regulated 0.75–0.85 V to FPGA fabric under rapidly varying current demands (0–6 A in <1 µs), especially during configuration or reconfiguration. IC Role / Device Role / Timing Role: Fast-transient DCS-Control buck with adjustable compensation and thermal warning to prevent throttling during burst workloads. Use Value: Sub-10 µs transient recovery time and ±1% DC accuracy ensure setup/hold timing margins are preserved across temperature and aging.	Use Scenario: Provides low-noise, high-current VDDQ (1.2 V or 1.1 V) to DDR4/DDR5 memory interfaces in telematics gateways and central computers. IC Role / Device Role / Timing Role: Synchronous buck with active output discharge and power-good window comparator for safe memory initialization and error detection. Use Value: Active discharge reduces VDDQ ramp-down time to <1 ms, enabling fast power-state transitions and meeting JEDEC t_DIS requirements.

Infotainment Power Supply

ADAS Domain Controller Rail

Use Scenario: Powers SoC cores and GPU in automotive head units requiring stable 0.8–1.2 V at up to 6 A with fast load transients during UI rendering or video decode.

IC Role / Device Role / Timing Role: Primary buck regulator with differential remote sensing and I²C-adjustable voltage to match dynamic DVFS profiles.

Use Value: Maintains ±1% output accuracy at point-of-load despite PCB IR drop, reducing need for margin and enabling lower-voltage SoC operation.

Use Scenario: Supplies vision processor and radar SoC in centralized ADAS ECUs where thermal density and EMI sensitivity demand high-efficiency, low-noise regulation.

IC Role / Device Role / Timing Role: High-current, stackable DC/DC with forced-PWM mode and spread-spectrum clocking to suppress conducted EMI in safety-critical signal chains.

Use Value: Achieves >92% peak efficiency at 6 A/0.85 V while meeting CISPR-25 Class 5 radiated emissions limits via synchronized multi-phase operation.

FPGA Core Voltage Rail

DDR4/DDR5 Memory VDDQ Supply

Use Scenario: Delivers tightly regulated 0.75–0.85 V to FPGA fabric under rapidly varying current demands (0–6 A in <1 µs), especially during configuration or reconfiguration.

IC Role / Device Role / Timing Role: Fast-transient DCS-Control buck with adjustable compensation and thermal warning to prevent throttling during burst workloads.

Use Value: Sub-10 µs transient recovery time and ±1% DC accuracy ensure setup/hold timing margins are preserved across temperature and aging.

Use Scenario: Provides low-noise, high-current VDDQ (1.2 V or 1.1 V) to DDR4/DDR5 memory interfaces in telematics gateways and central computers.

IC Role / Device Role / Timing Role: Synchronous buck with active output discharge and power-good window comparator for safe memory initialization and error detection.

Use Value: Active discharge reduces VDDQ ramp-down time to <1 ms, enabling fast power-state transitions and meeting JEDEC t_DIS requirements.

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	No I²C interface; fixed factory settings for startup voltage (0.850 V) and spread-spectrum; SDA/SCL pins must be tied to GND.	Lacks runtime voltage adjustment and telemetry; suitable for cost-sensitive, static-rail designs where firmware control is unnecessary.	Select when I²C functionality is unused and BOM simplification is prioritized over configurability.
TPS62903RTERQ1	3 A output, 2.7–6.5 V input, integrated FETs, 1.8–4.0 V output range; no remote sensing; uses voltage-mode control instead of DCS-Control.	Lower current, no differential sensing, less precise DC accuracy (±1.5%); intended for auxiliary rails, not core supplies.	Choose only for non-critical 3 A loads where remote sensing and sub-1% accuracy are not required.

Compared with TPS62870QWRXSRQ1, the TPS62870Y3QWRXSRQ1 adds I²C configurability and a different startup voltage (0.810 V vs. 0.850 V), enabling dynamic power management in evolving ADAS software stacks; compared with TPS62903RTERQ1, it delivers double the current, ±1% accuracy via remote sensing, and superior transient response for demanding core rails.

Availability

TPS62870Y3QWRXSRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and FPGA/ASIC core power applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for TPS62870Y3QWRXSRQ1 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-accuracy core and memory power delivery in automotive ADAS, infotainment, and centralized computing platforms, emphasizing functional safety readiness, thermal robustness, and I²C-based system-level control.

FAQ

What is the default startup output voltage of the TPS62870Y3QWRXSRQ1?

The TPS62870Y3QWRXSRQ1 has a factory-default startup output voltage of 0.810 V, selected via the VSEL pin (6.2 kΩ to GND) and associated with I²C address 0x40. This value is one of four preprogrammed startup voltages accessible through VSEL resistor configurations, and it is confirmed in Table 4-1 of the official datasheet.

Does the TPS62870Y3QWRXSRQ1 support stacking with other TPS6287x-Q1 devices?

Yes, the TPS62870Y3QWRXSRQ1 supports stacking with identical-current-rated devices (e.g., other 6A variants) using the SYNC_OUT, MODE/SYNC, EN, and PG pins to coordinate switching and enable shared current delivery. Stacking requires matching current ratings to prevent premature current limiting, and the COMP pins must be interconnected with a common compensation network.

What package type and dimensions does the TPS62870Y3QWRXSRQ1 use?

The TPS62870Y3QWRXSRQ1 uses the RXS package: a 16-pin VQFN-FCRLF with wettable flanks, measuring 2.55 mm × 3.55 mm × 1.0 mm. Its exposed thermal pad must be soldered to a GND plane to achieve the specified thermal resistance (R_θJA = 28°C/W on EVM) and ensure reliable operation at full 6 A load in automotive ambient conditions.

How does the differential remote sensing work on the TPS62870Y3QWRXSRQ1?

The TPS62870Y3QWRXSRQ1 uses dedicated VOSNS (output voltage sense) and GOSNS (output ground sense) pins to measure voltage differentially at the load, rejecting PCB trace resistance and noise. This architecture ensures ±1% DC output accuracy across temperature, line, and load variations - a capability verified in Section 6.5 of the datasheet and critical for FPGA and processor core rails.

What are the thermal protection thresholds for the TPS62870Y3QWRXSRQ1?

The TPS62870Y3QWRXSRQ1 asserts a thermal warning flag at 150°C junction temperature (T_J) and initiates thermal shutdown at 170°C, both with 20°C hysteresis. These thresholds are fixed and internally monitored, providing deterministic fail-safe behavior for automotive systems where junction temperature must remain within AEC-Q100 Grade 1 limits (–40°C to +125°C ambient).

TPS62870Y3QWRXSRQ1 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)

TPS62870Y3QWRXSRQ1 FAQ

1.How can I place an order for TPS62870Y3QWRXSRQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS62870Y3QWRXSRQ1 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 TPS62870Y3QWRXSRQ1 reliable?

The price and inventory of TPS62870Y3QWRXSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62870Y3QWRXSRQ1 is usually 5 days.

3.What payment methods are accepted for TPS62870Y3QWRXSRQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62870Y3QWRXSRQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS62870Y3QWRXSRQ1?

TPS62870Y3QWRXSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS62870Y3QWRXSRQ1 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 TPS62870Y3QWRXSRQ1?

For technical support, including TPS62870Y3QWRXSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62870Y3QWRXSRQ1 requirements.

6.How does Aetrix verify that TPS62870Y3QWRXSRQ1 is sourced from the original manufacturer or authorized distributors?

All TPS62870Y3QWRXSRQ1 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 TPS62870Y3QWRXSRQ1 meets industry standards.

7.What is the process for return or replacement of TPS62870Y3QWRXSRQ1?

All TPS62870Y3QWRXSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62870Y3QWRXSRQ1, 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 TPS62870Y3QWRXSRQ1 part is unused and in its original packaging.

Return procedure for TPS62870Y3QWRXSRQ1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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