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Texas Instruments TPS62872Z0WRXSR
- Part No.:
- TPS62872Z0WRXSR
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62872Z0WRXSR.pdf
- Description:
- IC REG BUCK PROG 12A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
TPS62872Z0WRXSR from Texas Instruments is a 12A synchronous step-down DC/DC converter with I²C interface, differential remote sensing, and stackable architecture for high-current FPGA/ASIC core supplies. It operates from 2.7V–6V input, delivers ±1% output voltage accuracy, supports 1.5–3.0MHz resistor-selectable switching frequency, and integrates 7mΩ/4.5mΩ power MOSFETs in a 2.55mm × 3.55mm VQFN-FCRLF (RXS) package.
For engineers reviewing the TPS62872Z0WRXSR datasheet, TPS62872Z0WRXSR pinout, TPS62872Z0WRXSR application, or TPS62872Z0WRXSR equivalent, this page details its fast-transient DCS-Control topology, I²C-configurable voltage scaling, thermal warning/shutdown, active output discharge, and 0.800V default startup output voltage with I²C address 0x40 - all critical for DDR memory and digital core power delivery design validation.
Technical Context
The TPS62872Z0WRXSR implements a fixed-frequency DCS-Control architecture with inner emulated current loop, middle direct feedback loop, and outer voltage-regulating loop to achieve sub-10µs transient response. Its differential remote sensing (VOSNS/GOSNS) enables point-of-load regulation with better than ±1% DC accuracy across load, line, and temperature.
It supports dual operating modes: forced-PWM (via MODE/SYNC high) for lowest output ripple and best transient performance, or power-save mode (MODE/SYNC low) for maximum light-load efficiency. Switching frequency is set via FSEL resistor (1.5/2.25/2.5/3.0MHz) or synchronized externally within ±10% tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A continuous - supports high-power FPGA/ASIC cores without external current sharing circuitry |
| Input Voltage Range | 2.7V to 6V - compatible with 3.3V and 5V intermediate bus architectures |
| Output Voltage Accuracy | ±1% - ensures stable core voltage under full load, line, and temperature variation |
| Switching Frequency | 1.5MHz to 3.0MHz (resistor-selectable) - enables compact 110–330nH inductor selection and EMI optimization |
| I²C Interface Speed | Up to 1MHz - allows real-time dynamic voltage scaling and telemetry readback during operation |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and embedded computing environments |
| Thermal Protection | 150°C thermal warning + 170°C shutdown with 20°C hysteresis - prevents thermal runaway in stacked configurations |
Pinout & Package
TPS62872Z0WRXSR uses a 16-pin RXS (VQFN-FCRLF) package measuring 2.55mm × 3.55mm × 1mm with wettable flanks and an exposed thermal pad soldered to GND for optimal thermal resistance (RθJB = 7.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP | Control loop compensation node | Connects external RC network to GOSNS to stabilize DCS-Control loop; shared across stacked devices |
| GOSNS | Differential ground sense input | Completes Kelvin sensing path for precise point-of-load regulation; rejects PCB trace IR drop |
| VOSNS | Differential output voltage sense input | Measures true load voltage at remote point; enables <±1% DC accuracy under all conditions |
| EN | Enable control input | Active-high logic input (min. 15kΩ series resistor); disables device and reduces quiescent current to 40µA |
| VIN (Pins 5,9) | Main power input | Accepts 2.7–6V; requires local ceramic capacitors per pin for high-frequency noise suppression |
| GND (Pins 6,8) | Power ground return | Low-inductance return path for high di/dt currents; connects to thermal pad for thermal conduction |
| SW | Switch node | Drives external inductor; transitions between VIN and GND at up to 3MHz; requires tight layout for EMI control |
| PG | Power-good open-drain output | Signals valid output (92–98% undervoltage / 102–108% overvoltage window); daisy-chained in stacked mode |
| MODE/SYNC | Mode select / clock sync input | Configures forced-PWM (high) or power-save (low); accepts external sync clock in same frequency range |
| SDA / SCL | I²C bidirectional data / clock | Supports 1MHz fast-mode-plus; pullup resistors required; tied to GND for non-I²C variants |
| VSEL | Startup voltage select | Resistor-to-GND/VIN sets one of four factory-programmed startup voltages (e.g., 0.800V @ 0x40) |
| FSEL | Frequency select | Resistor-to-GND/VIN selects 1.5/2.25/2.5/3.0MHz free-running frequency or enables sync mode |
| SYNC_OUT | Internal clock output | Drives MODE/SYNC of next device in daisy-chain; defines secondary role when pulled to GND via 47kΩ |
Key Features
| Feature | Design Value |
|---|---|
| Stackable architecture | Enables parallel operation of identical-current devices (e.g., two TPS62872Z0WRXSR = 24A) with shared COMP, EN, PG, and SYNC_OUT signals |
| Differential remote sensing | Compensates for PCB trace resistance up to ±100mV common-mode range (GOSNS), ensuring regulation at actual load point |
| Active output discharge | Provides controlled 50–200mA constant-current or 6Ω resistive discharge path to prevent floating outputs during disable |
| I²C programmability | Allows runtime adjustment of output voltage, soft-start time, spread-spectrum enable, and telemetry monitoring (temperature, VOUT) |
| DCS-Control topology | Delivers <10µs load-step transient response with minimal output capacitance due to fast inner current loop and slope compensation |
Applications
| FPGA Core Supply | DDR Memory Supply |
|---|---|
Use Scenario: Powering 12A+ core rails of Xilinx Versal or Intel Agilex FPGAs requiring dynamic voltage scaling and tight regulation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with I²C-controlled VDD_INT ramping and thermal telemetry. Use Value: Enables adaptive voltage/frequency scaling (AVFS) via real-time I²C writes, reducing system power by up to 20% versus fixed-voltage solutions. | Use Scenario: Delivering tightly regulated 1.1V/1.2V supply to LPDDR4/5 memory subsystems with fast transient demands. IC Role / Device Role / Timing Role: High-bandwidth point-of-load regulator using differential sensing to reject board-level noise and IR drop. Use Value: Maintains ±1% output accuracy across 0–12A load steps, preventing DDR timing violations and data corruption. |
| Optical Network ASIC Supply | Industrial Embedded CPU Core |
Use Scenario: Supplying 12A core voltage to coherent DSP ASICs in 400G/800G optical line cards operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Stackable DC/DC with thermal warning output feeding FPGA-based system monitor for predictive fan control. Use Value: Supports extended temperature operation with 170°C thermal shutdown and 150°C warning flag, enabling reliable field deployment. | Use Scenario: Powering ARM Cortex-A72/A76 application processors in ruggedized edge AI gateways with constrained board space. IC Role / Device Role / Timing Role: Compact 2.55mm × 3.55mm power module replacing discrete buck controllers + MOSFETs + inductors. Use Value: Reduces BOM count by 12+ components and PCB area by >40% while maintaining 90%+ efficiency at 6A–12A loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62872Z2WRXSR | Same 12A rating and RXS package; differs in factory-programmed VSEL settings (0.500V/0x40, 1.050V/0x43) and default spread-spectrum off | Targeted for lower-voltage core rails (e.g., 0.5V GPU domains) where startup voltage must be <0.8V | Select when system requires 0.500V default startup instead of 0.800V; otherwise pin-and-function identical |
| TPS62873Z0WRXSR | 15A rated version in identical RXS package; shares same pinout, I²C interface, and feature set but higher current limit (22A typ.) | Suitable for future-proofing or margin-critical designs needing >12A headroom without layout change | Choose if peak load exceeds 12A or stacking is undesirable; note higher RDS(on) trade-off (7/4.5mΩ vs 6.5/4.0mΩ) |
Compared with TPS62872Z0WRXSR, TPS62872Z2WRXSR offers different factory-set startup voltages for sub-0.8V applications, while TPS62873Z0WRXSR provides 3A additional current headroom in the same footprint - both retain identical I²C control, thermal protection, and stackability for seamless migration paths.
Availability
TPS62872Z0WRXSR is available at Aetrix Electronics and suitable for FPGA core supplies, DDR memory regulators, and optical network ASIC power systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS62872Z0WRXSR 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 power management technologies with over 90 years of innovation in high-reliability power conversion.
The TPS6287x product line was designed specifically for high-current, fast-transient digital core and memory supplies in FPGA, ASIC, and processor-based systems - emphasizing I²C configurability, thermal robustness, and stackable scalability.
FAQ
What is the default startup output voltage and I²C address of the TPS62872Z0WRXSR?
The TPS62872Z0WRXSR has a factory-programmed default startup output voltage of 0.800V with corresponding I²C address 0x40. This setting is selected by connecting the VSEL pin to GND via a 6.2kΩ resistor. The I²C address is fixed and linked to the VSEL configuration - users cannot independently assign address or voltage.
Can the TPS62872Z0WRXSR be used in stacked configurations, and what pins must be interconnected?
Yes, the TPS62872Z0WRXSR supports stacking with identical-current devices. Required interconnections include COMP (shared RC compensation node), EN (common enable signal), PG (daisy-chained open-drain output), and SYNC_OUT to MODE/SYNC of the next device. All stacked units must share the same VSEL and FSEL resistor values to ensure matched startup voltage and switching frequency.
Does the TPS62872Z0WRXSR support spread-spectrum clocking, and how is it enabled?
Yes, the TPS62872Z0WRXSR supports spread-spectrum operation to reduce EMI peaks. It is enabled via I²C register write (not hardware pin); the default factory setting is disabled. When activated, it modulates the switching frequency with ±10% deviation at fSW/2048, requiring no external components beyond standard input/output filtering.
What is the purpose of the GOSNS and VOSNS pins on the TPS62872Z0WRXSR, and how must they be routed?
The GOSNS and VOSNS pins implement differential remote sensing to regulate voltage precisely at the load. GOSNS connects to the load's ground reference point, and VOSNS connects to the load's positive rail - both must be routed as a matched, low-noise Kelvin pair directly to the load terminals, avoiding shared PCB traces with high-current return paths to maintain ±1% accuracy.
How does the thermal warning and shutdown functionality operate in the TPS62872Z0WRXSR?
The TPS62872Z0WRXSR monitors die temperature internally and asserts a thermal warning flag at 150°C (with 20°C hysteresis) via I²C status register. If temperature rises further to 170°C, it triggers hard thermal shutdown, disabling switching and pulling PG low. Both thresholds are fixed and unprogrammable, ensuring fail-safe protection during overload or cooling failure scenarios.
TPS62872Z0WRXSR 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:
- 12A
- Frequency - Switching:
- 1.5MHz, 2.25MHz, 2.5MHz, 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-VQFN (2.55x3.55)
TPS62872Z0WRXSR FAQ
1.How can I place an order for TPS62872Z0WRXSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62872Z0WRXSR 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 TPS62872Z0WRXSR reliable?
The price and inventory of TPS62872Z0WRXSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62872Z0WRXSR is usually 5 days.
3.What payment methods are accepted for TPS62872Z0WRXSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62872Z0WRXSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62872Z0WRXSR?
TPS62872Z0WRXSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62872Z0WRXSR 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 TPS62872Z0WRXSR?
For technical support, including TPS62872Z0WRXSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62872Z0WRXSR requirements.
6.How does Aetrix verify that TPS62872Z0WRXSR is sourced from the original manufacturer or authorized distributors?
All TPS62872Z0WRXSR 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 TPS62872Z0WRXSR meets industry standards.
7.What is the process for return or replacement of TPS62872Z0WRXSR?
All TPS62872Z0WRXSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62872Z0WRXSR, 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 TPS62872Z0WRXSR part is unused and in its original packaging.
Return procedure for TPS62872Z0WRXSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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