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Texas Instruments TPS62812MWRWYR
- Part No.:
- TPS62812MWRWYR
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS62812MWRWYR.pdf
- Description:
- IC REG BUCK ADJ 2A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
TPS62812MWRWYR from Texas Instruments is a 2-A synchronous step-down DC/DC converter optimized for extended-temperature aerospace and defense applications. It operates from 2.75 V to 6 V input, delivers adjustable output from 0.6 V to 5.5 V with ±1% accuracy in PWM mode, features 15 µA quiescent current, and supports 1.8–4 MHz adjustable switching frequency. Its –55°C to +150°C junction temperature range enables use in aircraft electrical power and seeker front-end systems.
For engineers reviewing the TPS62812MWRWYR datasheet, TPS62812MWRWYR pinout, TPS62812MWRWYR application, or TPS62812MWRWYR equivalent, key selection criteria include its forced-PWM/PFM dual-mode operation, precise ENABLE with user-defined UVLO, active output discharge, wettable-flank VQFN package, and power-good window comparator - all validated for high-reliability, wide-temperature deployment.
Technical Context
The TPS62812MWRWYR implements peak current mode control with internal loop compensation selectable via resistor on COMP/FSET, enabling stable regulation across 15–470 µF output capacitance. Its MODE/SYNC pin supports both forced PWM operation and external clock synchronization (1.8–4 MHz), with PLL-assisted seamless transition between internal and external timing sources.
It integrates low-RDS(on) MOSFETs (37 mΩ high-side, 15 mΩ low-side at VIN ≥ 5 V), 100% duty-cycle capability, and thermal shutdown at 170°C with 15°C hysteresis. The SS/TR pin provides programmable soft-start ramp time (100–200 µs) and voltage tracking for precise rail sequencing in multi-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A continuous - supports compact, high-density power rails in space-constrained avionics modules |
| Input Voltage Range | 2.75 V to 6 V - compatible with 3.3 V, 5 V, and battery-backed aircraft bus supplies |
| Output Voltage Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive analog and RF circuitry |
| Quiescent Current | 15 µA typical - enables ultra-low-power standby in always-on defense subsystems |
| Switching Frequency | 1.8 MHz to 4 MHz adjustable - allows EMI optimization and small external inductor sizing (0.25–0.9 µH) |
| Junction Temperature Range | –55°C to +150°C - qualified for extreme-environment operation in rail transport and in-flight entertainment enclosures |
| Power Good Output | Open-drain window comparator - provides reliable system-level power sequencing and fault detection |
Pinout & Package
The TPS62812MWRWYR is housed in a 2-mm × 3-mm VQFN package (RWY) with wettable flanks for automated optical inspection and robust solder-joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Logic-controlled startup with 1.1 V rising threshold; supports RC-delayed power-up and custom UVLO via resistor divider |
| FB | Feedback input | Connects to resistive divider for output voltage setting; 0.6 V reference enables 0.6–5.5 V adjustment |
| GND | Ground reference | Primary return path for power and control circuits; requires low-inductance PCB layout |
| MODE/SYNC | Mode control / sync input | Selects PFM/PWM auto-mode (low) or forced PWM (high); accepts external 1.8–4 MHz clock for synchronization |
| COMP/FSET | Compensation / frequency set | Resistor-to-GND sets both switching frequency and internal loop compensation; tied to GND/VIN fixes fS = 2.25 MHz |
| PG | Power-good output | Open-drain status signal indicating VOUT within ±5% window; pulled high via external resistor when valid |
| SS/TR | Soft-start / tracking input | Capacitor-to-GND sets ramp time; also accepts external voltage for supply rail tracking and sequencing |
| SW | Switch node | Internal high- and low-side MOSFET connection point; requires low-ESR ceramic output capacitor and careful layout |
| VIN | Input supply | 2.75–6 V power input; demands local 5–10 µF effective capacitance placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety-Capable | Documentation available for ISO 26262 and IEC 61508 system-level safety design |
| Active Output Discharge | Internal 50 Ω discharge path rapidly collapses VOUT during shutdown - prevents floating bias in downstream circuitry |
| Adjustable Soft Start | SS/TR pin supports 100–200 µs ramp time via external capacitor - limits inrush current and avoids input bus droop |
| 100% Duty Cycle Mode | Enables dropout operation down to VOUT ≈ VIN – 0.3 V - critical for low-VIN/high-VOUT scenarios in battery-fed systems |
| Wettable Flank Package | RWY VQFN enables AOI-compatible solder-joint inspection - essential for high-integrity aerospace assembly |
Applications
| Aircraft Electrical Power | Defense Radio |
|---|---|
Use Scenario: Primary 3.3 V or 5 V distribution in flight-critical avionics bays with ambient temperatures ranging from –55°C to +85°C. IC Role / Device Role / Timing Role: Synchronous buck regulator delivering regulated power to FPGAs, ADCs, and communication interfaces. Use Value: Extended temperature qualification and ±1% output accuracy ensure stable digital logic margins and analog signal integrity under thermal stress. | Use Scenario: Compact, low-noise 1.2 V supply for RF transceiver ICs in handheld tactical radios operating in desert or arctic environments. IC Role / Device Role / Timing Role: High-efficiency DC/DC converter with spread-spectrum clocking to suppress conducted EMI near sensitive receive paths. Use Value: 15 µA quiescent current extends battery life during standby; 1.8–4 MHz frequency adjustability enables EMI band avoidance. |
| Seeker Front End | In-Flight Entertainment |
Use Scenario: Low-noise, fast-transient 2.5 V rail for millimeter-wave radar front-end amplifiers and mixers in guided munitions. IC Role / Device Role / Timing Role: Step-down regulator with precise enable and power-good signaling for controlled power sequencing of RF and baseband sections. Use Value: SS/TR pin enables tracking of master supply; active discharge prevents latch-up during rapid power cycling. | Use Scenario: Distributed 1.8 V and 3.3 V supplies for video decoders and display controllers in cabin seat-back systems exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Robust, high-reliability buck converter with thermal shutdown and wettable-flank packaging for long-life field deployment. Use Value: –55°C to +150°C rating ensures uninterrupted operation during cabin pressurization cycles and ground-to-cruise thermal transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62811MWRWYR | 1-A output current; identical pinout, package, and feature set except lower current rating and higher RDS(on) | Suitable for lower-power subsystems where 1 A suffices; same thermal and environmental specs | Select when load current ≤ 1 A and board layout reuse is prioritized over headroom |
| TPS62813MWRWYR | 3-A output current; same RWY package and pinout; higher current capability with slightly increased RDS(on) and thermal resistance | Required for systems scaling beyond 2 A, such as multi-core processors or high-speed SerDes rails | Choose when future-proofing for higher loads or consolidating multiple rails into one higher-current solution |
Compared with TPS62811MWRWYR and TPS62813MWRWYR, the TPS62812MWRWYR offers optimal balance of current capacity, thermal performance, and footprint efficiency for mid-power avionics and defense electronics - avoiding unnecessary derating or overspecification.
Availability
TPS62812MWRWYR is available at Aetrix Electronics and suitable for aircraft electrical power, defense radio, seeker front end, and in-flight entertainment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS62812MWRWYR 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 high-reliability power management solutions.
The TPS6281xM product line was designed specifically for aerospace, defense, and rail transport applications demanding extended temperature operation, functional safety support, and robust power delivery in mission-critical systems.
FAQ
What is the maximum continuous output current supported by the TPS62812MWRWYR?
The TPS62812MWRWYR supports 2 A continuous output current across its full operating junction temperature range of –55°C to +150°C. This rating is validated with appropriate PCB copper area and thermal vias per TI's recommended layout guidelines. Derating applies above +125°C ambient, and thermal shutdown activates at 170°C junction temperature to protect the device.
Does the TPS62812MWRWYR support external clock synchronization?
Yes, the TPS62812MWRWYR supports external clock synchronization via its MODE/SYNC pin, accepting input frequencies from 1.8 MHz to 4 MHz. Synchronization requires a resistor from COMP/FSET to GND to set an internal reference frequency close to the external clock; direct tie to GND or VIN disables this function. The internal PLL enables seamless lock-on and fallback behavior if the external clock fails.
How does the TPS62812MWRWYR handle undervoltage lockout (UVLO)?
The TPS62812MWRWYR implements precise UVLO with rising threshold of 2.5–2.75 V and falling threshold of 2.25–2.6 V. The EN pin can be configured with a resistor divider to define custom UVLO thresholds, enabling system-level brownout protection. During UVLO, both power MOSFETs are disabled, PG goes low, and quiescent current drops to ≤26 µA.
Can the TPS62812MWRWYR operate at –55°C ambient temperature?
Yes, the TPS62812MWRWYR is fully specified and tested for operation at –55°C junction temperature, including startup, regulation, and transient response. TI validates start-up at –55°C using qualified components (e.g., TDK TFM252012ALMAR47MTAA inductor, Murata GCJ31CL8ED226KE07 capacitors), confirming functionality in cryogenic aerospace environments.
What is the purpose of the COMP/FSET pin on the TPS62812MWRWYR?
The COMP/FSET pin on the TPS62812MWRWYR serves two simultaneous functions: it sets the internal loop compensation network (for stability with 15–470 µF output capacitance) and defines the switching frequency (1.8–4 MHz). A resistor to GND selects both parameters; tying to GND or VIN fixes fS = 2.25 MHz and selects default compensation. The pin must never be left floating.
TPS62812MWRWYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-VFQFN
- 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):
- 2.75V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.8MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (3x2)
TPS62812MWRWYR FAQ
1.How can I place an order for TPS62812MWRWYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62812MWRWYR 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 TPS62812MWRWYR reliable?
The price and inventory of TPS62812MWRWYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62812MWRWYR is usually 5 days.
3.What payment methods are accepted for TPS62812MWRWYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62812MWRWYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62812MWRWYR?
TPS62812MWRWYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62812MWRWYR 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 TPS62812MWRWYR?
For technical support, including TPS62812MWRWYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62812MWRWYR requirements.
6.How does Aetrix verify that TPS62812MWRWYR is sourced from the original manufacturer or authorized distributors?
All TPS62812MWRWYR 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 TPS62812MWRWYR meets industry standards.
7.What is the process for return or replacement of TPS62812MWRWYR?
All TPS62812MWRWYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62812MWRWYR, 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 TPS62812MWRWYR part is unused and in its original packaging.
Return procedure for TPS62812MWRWYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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