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Texas Instruments TPS62873Z0WRXSR
- Part No.:
- TPS62873Z0WRXSR
- Manufacturer:
- Texas Instruments
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
TPS62873Z0WRXSR.pdf
- Description:
- IC REG BUCK PROG 15A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,188
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Product details
Overview
TPS62873Z0WRXSR from Texas Instruments is a 15A 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 TPS62873Z0WRXSR datasheet, TPS62873Z0WRXSR pinout, TPS62873Z0WRXSR application, or TPS62873Z0WRXSR equivalent, key selection criteria include its 15A continuous output current capability, I²C-configurable voltage scaling for dynamic power management, differential remote sense for point-of-load regulation, and thermal warning/shutdown protection across –40°C to 125°C junction temperature.
Technical Context
The TPS62873Z0WRXSR implements a fixed-frequency DCS-Control topology with inner emulated current loop, middle direct feedback loop, and outer voltage-regulating loop-enabling fast transient response and low output voltage ripple. Its dual-mode operation (power-save or forced-PWM) allows trade-off between efficiency and transient performance.
Differential remote sensing (VOSNS/GOSNS) enables precise point-of-load regulation, while I²C interface (up to 1MHz) provides real-time voltage monitoring, thermal warnings, and programmable startup voltage (0.800V default, I²C address 0x40). Stackable configuration supports daisy-chained synchronization via SYNC_OUT/MODE/SYNC pins for scalable current delivery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 15A continuous - supports high-power FPGA/ASIC cores without external current sharing circuitry |
| Input Voltage Range | 2.7V to 6V - compatible with common intermediate bus rails (3.3V, 5V) |
| Output Voltage Accuracy | ±1% - ensures stable core voltage under load, temperature, and line variation |
| Switching Frequency | 1.5 / 2.25 / 2.5 / 3.0 MHz (resistor-selectable) - enables compact magnetics and EMI optimization |
| I²C Interface Speed | Up to 1 MHz - allows rapid voltage reconfiguration during DVFS transitions |
| Thermal Protection | 150°C thermal warning + 170°C shutdown - prevents damage during sustained overload or poor airflow |
| Remote Sense Accuracy | Differential VOSNS/GOSNS - eliminates IR drop error for <±1% regulation at point-of-load |
Pinout & Package
TPS62873Z0WRXSR uses a 16-pin RXS (VQFN-FCRLF) package measuring 2.55mm × 3.55mm × 1mm with wettable flanks and exposed thermal pad soldered to GND for optimal thermal performance (RθJA = 43.2°C/W, 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; shared across stacked devices |
| VOSNS / GOSNS | Differential output voltage sense inputs | Enable point-of-load regulation by sensing at load terminals - critical for ±1% accuracy |
| EN | Enable control input | Active-high logic with internal pulldown; requires ≥15kΩ series resistor to prevent floating |
| MODE/SYNC | Operating mode select & external clock sync | Pull-low = power-save; pull-high = forced-PWM; also accepts external clock for synchronized multi-phase operation |
| SDA / SCL | I²C bidirectional data & clock | Supports voltage monitoring, thermal alerts, and dynamic VOUT adjustment; pull-up resistors required |
| VSEL | Startup output voltage select | Resistor-to-GND/VIN sets default VOUT (0.800V for TPS62873Z0WRXSR); factory-programmed I²C address 0x40 |
| FSEL | Switching frequency select | Resistor-to-GND/VIN configures fSW (1.5/2.25/2.5/3.0 MHz) or enables external sync |
| SYNC_OUT | Internal clock output | Daisy-chains to MODE/SYNC of next device in stack; defines secondary role when pulled to GND via 47kΩ |
Key Features
| Feature | Design Value |
|---|---|
| Stackable architecture | Enables parallel operation of multiple TPS62873Z0WRXSR units for >15A loads with automatic current sharing and synchronized switching |
| Active output discharge | Provides controlled 50–200mA constant-current or 6Ω resistive discharge path to prevent floating outputs during disable |
| Power-good window comparator | Monitors VOUT with ±2% undervoltage/overvoltage thresholds (94–98% / 102–108% VOUT) and 40µs deglitch time |
| Adjustable external compensation | Allows loop stability optimization for varied output capacitor ESR/ESL and load conditions using COMP-to-GOSNS RC network |
| Spread-spectrum operation | Reduces peak EMI by modulating fSW ±10% at fmod = fSW/2048 - configurable via I²C or disabled by default |
Applications
| FPGA Core Supply | ASIC Digital Core |
|---|---|
Use Scenario: Powering 7nm/5nm FPGA fabric requiring tight voltage tolerance and fast load transients during reconfiguration. IC Role / Device Role / Timing Role: Primary core regulator delivering 0.8V @ 15A with differential remote sensing and I²C-based DVFS voltage scaling. Use Value: ±1% DC accuracy and fast transient response ensure timing margin integrity during logic cluster activation bursts. | Use Scenario: Supplying high-performance AI accelerator ASICs with dynamic workload-dependent voltage requirements. IC Role / Device Role / Timing Role: Programmable core rail generator supporting real-time voltage adjustment via I²C to match compute intensity. Use Value: 1MHz I²C interface enables sub-100µs VOUT changes, reducing dynamic power loss during idle-to-active transitions. |
| DDR Memory Subsystem | Optical Network Line Card |
Use Scenario: Delivering stable 1.1V or 1.2V to DDR4/DDR5 memory controllers and PHYs with minimal noise coupling. IC Role / Device Role / Timing Role: Low-noise, forced-PWM mode regulator with spread-spectrum EMI reduction and remote sense compensation. Use Value: 2.25MHz switching frequency and integrated 7mΩ/4.5mΩ FETs minimize output ripple (<10mVpp) critical for signal integrity. | Use Scenario: Powering dense optical transceiver modules (e.g., QSFP-DD, OSFP) in telecom infrastructure with strict thermal limits. IC Role / Device Role / Timing Role: High-efficiency 15A supply with thermal warning (150°C) and shutdown (170°C) for unattended operation. Use Value: Wettable flank VQFN package and RθJB = 7.7°C/W enable reliable operation at 85°C ambient without heatsinks. |
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 |
|---|---|---|---|
| TPS62872Z0WRXSR | 12A rated, identical pinout and feature set except lower current limit and higher rDS(on) (9mΩ/6mΩ) | Suitable for designs where peak load current remains ≤12A; reduces thermal stress but requires derating for 15A use cases | Select when system-level current demand is confirmed ≤12A and cost/thermal margin outweigh need for headroom |
| MPM3695-100 | 100V-input, 15A module with integrated inductor; no I²C, no remote sense, larger 6mm × 6mm footprint | Targeted at industrial/high-voltage applications (e.g., motor drives), not low-VIN core rails; lacks point-of-load precision | Choose only for 12–48V input systems where board space permits larger module and remote sensing is unnecessary |
Compared with TPS62872Z0WRXSR, the TPS62873Z0WRXSR provides 25% higher current capacity and lower conduction losses for same-size PCB layout; versus MPM3695-100, it offers superior voltage accuracy, I²C configurability, and compact footprint for low-voltage core supplies.
Availability
TPS62873Z0WRXSR is available at Aetrix Electronics and suitable for FPGA core supplies, ASIC digital power domains, and DDR memory subsystems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS62873Z0WRXSR 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 50 years of innovation in high-reliability power conversion solutions.
The TPS6287x product line was designed specifically for high-current, low-voltage core power delivery in advanced computing and networking systems-emphasizing fast transient response, I²C configurability, and thermal robustness.
FAQ
What is the default startup output voltage of the TPS62873Z0WRXSR?
The TPS62873Z0WRXSR has a factory-programmed default startup output voltage of 0.800V, selected via the VSEL pin configuration (6.2kΩ to GND) and associated with I²C address 0x40. This value is confirmed in the Device Options table and can be dynamically adjusted post-startup using the I²C interface. The TPS62873Z0WRXSR maintains this default unless reprogrammed through register writes.
Does the TPS62873Z0WRXSR support stacking with other current ratings in the TPS6287x family?
No, the TPS62873Z0WRXSR must only be stacked with identical 15A-rated devices (e.g., other TPS62873Z0WRXSR units). The datasheet explicitly states that stacking devices with different current ratings risks premature current limiting in the lower-rated unit. All stacked TPS62873Z0WRXSR units require matched VSEL/FSEL configurations and synchronized MODE/SYNC connections via the daisy-chained SYNC_OUT pin.
What is the maximum supported I²C clock frequency for the TPS62873Z0WRXSR?
The TPS62873Z0WRXSR supports I²C Fast Mode Plus operation up to 1 MHz, as specified in Section 6.6 of the datasheet. This allows rapid voltage updates and status reads during dynamic voltage and frequency scaling (DVFS) events. The interface complies with standard I²C timing parameters including tSU;DAT ≥ 50ns and tHD;DAT ≥ 0ns for Fast Mode Plus, ensuring interoperability with modern microcontrollers and PMIC supervisors.
How does the differential remote sensing work on the TPS62873Z0WRXSR?
The TPS62873Z0WRXSR uses dedicated VOSNS (output voltage sense) and GOSNS (output ground sense) pins to measure voltage directly at the load terminals, rejecting PCB trace resistance errors. This differential pair enables true point-of-load regulation with <±1% DC accuracy across temperature, load, and line variations. The internal bias current is ±6µA, and common-mode range is ±100mV, allowing robust operation even with moderate routing asymmetry.
What thermal protection features are implemented in the TPS62873Z0WRXSR?
The TPS62873Z0WRXSR includes two-tier thermal protection: a thermal warning flag activates at 150°C junction temperature (with 20°C hysteresis), and hard thermal shutdown triggers at 170°C (also with 20°C hysteresis). Both thresholds are monitored continuously and reported via I²C registers. The device resumes operation only after junction temperature falls below the hysteresis threshold, ensuring safe recovery without manual reset.
TPS62873Z0WRXSR 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:
- 15A
- 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)
TPS62873Z0WRXSR FAQ
1.How can I place an order for TPS62873Z0WRXSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62873Z0WRXSR 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 TPS62873Z0WRXSR reliable?
The price and inventory of TPS62873Z0WRXSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62873Z0WRXSR is usually 5 days.
3.What payment methods are accepted for TPS62873Z0WRXSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62873Z0WRXSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62873Z0WRXSR?
TPS62873Z0WRXSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62873Z0WRXSR 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 TPS62873Z0WRXSR?
For technical support, including TPS62873Z0WRXSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62873Z0WRXSR requirements.
6.How does Aetrix verify that TPS62873Z0WRXSR is sourced from the original manufacturer or authorized distributors?
All TPS62873Z0WRXSR 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 TPS62873Z0WRXSR meets industry standards.
7.What is the process for return or replacement of TPS62873Z0WRXSR?
All TPS62873Z0WRXSR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62873Z0WRXSR, 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 TPS62873Z0WRXSR part is unused and in its original packaging.
Return procedure for TPS62873Z0WRXSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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