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Texas Instruments TPS62812QWRWYRQ1
- Part No.:
- TPS62812QWRWYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS62812QWRWYRQ1.pdf
- Description:
- IC REG BUCK ADJ 2A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,538
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Product details
Overview
TPS62812QWRWYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 2 A continuous output current, operating from 2.75 V to 6 V input, with adjustable output voltage (0.6 V–5.5 V), ±1% PWM-mode accuracy, and 1.8 MHz–4 MHz externally adjustable switching frequency. It serves as a primary power supply for infotainment head units and ADAS sensor fusion ECUs.
For engineers reviewing the TPS62812QWRWYRQ1 datasheet, TPS62812QWRWYRQ1 pinout, TPS62812QWRWYRQ1 application, or TPS62812QWRWYRQ1 equivalent, key selection criteria include its wettable-flank VQFN-9 package, active output discharge, precise ENABLE threshold for sequencing, forced-PWM/automatic PFM mode control, and spread-spectrum clocking option for EMI reduction.
Technical Context
The TPS62812QWRWYRQ1 implements peak current mode control with internal loop compensation selectable via resistor on COMP/FSET, enabling stable operation across 15 µF–130 µF output capacitance ranges depending on VOUT and compensation setting. Its dual-mode operation (PFM at light load, forced PWM at full load) maintains high efficiency from 10 µA to 2 A output current.
Functional safety support includes documentation for ISO 26262 ASIL-B system integration, thermal shutdown at 170 °C with 15 °C hysteresis, and precise undervoltage lockout via programmable EN divider. The MODE/SYNC pin supports external clock synchronization (1.8–4 MHz) or logic-controlled PWM/PPM mode selection without additional components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.75 V to 6 V - supports direct connection to automotive battery rail (including cold-crank down to 3 V) without pre-regulation. |
| Output Current | 2 A continuous - sustains full load at +125 °C ambient with proper PCB thermal design (RθJB = 16.4 °C/W). |
| Output Voltage Accuracy | ±1% in PWM mode - enables tight regulation for sensitive SoC cores and memory rails without post-regulation. |
| Quiescent Current | 15 µA typical - minimizes standby power loss in always-on vehicle domains (e.g., telematics wake-up circuits). |
| Switching Frequency | 1.8 MHz to 4 MHz adjustable - allows EMI optimization and inductor size reduction while maintaining >90% efficiency at 2 A. |
| Enable Threshold | VEN(HI) = 1.1 V, VEN(LO) = 1.0 V - enables precise power-rail sequencing using RC networks or supervisor ICs. |
| Power-Good Output | Window comparator with 92–98% UV and 107–113% OV thresholds - provides reliable system reset signaling without external monitoring circuitry. |
Pinout & Package
The TPS62812QWRWYRQ1 is housed in a 3 mm × 2 mm VQFN-9 package with wettable flanks for automated optical inspection (AOI) of solder joints in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE/SYNC (Pin 1) | Mode control / synchronization input | Pull low for automatic PFM/PWM transition; pull high for forced PWM; accept external 1.8–4 MHz clock for synchronized multi-rail systems. |
| VIN (Pin 2) | Main power input | Connects to 2.75–6 V source; requires local 5–10 µF ceramic input capacitor placed adjacent to pin for low-impedance path. |
| SW (Pin 3) | Switch node | Drives external 0.32–0.9 µH inductor; carries high di/dt; must be routed with minimal loop area to reduce EMI. |
| GND (Pin 4) | Power ground | Primary return path for high-current switching; connects directly to thermal pad for optimal heat dissipation. |
| FB (Pin 5) | Feedback input | Monitors output voltage via resistive divider; sets regulated VOUT = 0.6 V × (1 + R1/R2); leakage <70 nA ensures accuracy. |
| SS/TR (Pin 6) | Soft-start / tracking input | Capacitor here controls startup ramp time; also accepts external voltage for supply tracking during power sequencing. |
| COMP/FSET (Pin 7) | Compensation / frequency set | Resistor to GND selects both control-loop compensation (for 15–130 µF COUT) and switching frequency (1.8–4 MHz). |
| EN (Pin 8) | Enable input | Logic-controlled start-up; 1.1 V rising threshold enables precise undervoltage lockout and controlled power-up timing. |
| PG (Pin 9) | Power-good open-drain output | Asserts high-Z when VOUT is within ±5% window; sinks 2 mA max; used for system enable or fault indication. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flanks | Enables AOI-compatible solder joint inspection in high-reliability automotive assembly lines. |
| Active output discharge | Internal 50 Ω discharge path ensures rapid VOUT collapse during shutdown-critical for safe rail sequencing. |
| 100% duty cycle mode | Maintains regulation down to VOUT ≈ VIN − 0.3 V, supporting low-dropout operation in battery-supplied systems. |
| Spread spectrum clocking (optional) | Reduces peak EMI by ±10% frequency dithering-meets CISPR 25 Class 5 requirements without added shielding. |
| Thermal shutdown with hysteresis | Shuts down at 170 °C junction temperature and re-enables only after cooling to 155 °C-prevents thermal cycling damage. |
Applications
| Infotainment Head Unit | Hybrid Reconfigurable Cluster |
|---|---|
Use Scenario: Powering application processor, display interface, and audio codec in centralized vehicle infotainment systems. IC Role / Device Role / Timing Role: Primary 1.1 V/1.8 V/3.3 V buck regulator supplying core logic and I/O rails with tight transient response. Use Value: 2 A capability and ±1% accuracy ensure stable SoC operation under dynamic video/audio workloads; soft-start prevents inrush-induced bus droop. | Use Scenario: Supplying reconfigurable digital cluster MCU, TFT driver, and touch controller in next-gen digital instrument panels. IC Role / Device Role / Timing Role: Sequenced power source enabling synchronized boot of multiple subsystems via SS/TR and EN pins. Use Value: Precise ENABLE threshold and tracking capability allow coordinated rail ramp-up across display, graphics, and safety-monitoring domains. |
| Telematics Control Unit | Surround View ECU |
Use Scenario: Providing always-on 3.3 V and switched 1.2 V supplies for LTE/C-V2X modems and GNSS receivers in connected vehicle gateways. IC Role / Device Role / Timing Role: Low-quiescent-current (15 µA) buck converter maintaining modem readiness during vehicle sleep modes. Use Value: Ultra-low IQ extends battery backup runtime; power-good output triggers wake-up interrupt to host MCU upon valid rail establishment. | Use Scenario: Delivering clean, low-noise 1.2 V and 1.8 V supplies to image signal processors and high-speed SerDes in surround-view camera fusion ECUs. IC Role / Device Role / Timing Role: EMI-optimized power stage using spread-spectrum clocking and forced-PWM mode to avoid interference with camera data links. Use Value: 4 MHz max switching frequency enables use of small 0.33 µH inductors; wettable flanks ensure solder joint reliability in vibration-prone mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62811QWRWYRQ1 | 1 A output current; identical pinout, package, and feature set except reduced current rating and lower RDS(on). | Suitable for lower-power domains (e.g., CAN transceivers, sensors) where 2 A headroom is unnecessary. | Select when system load is ≤1 A and board space/layout reuse is prioritized over margin. |
| TPS62813QWRWYRQ1 | 3 A output current; same VQFN-9 package but higher RDS(on) and thermal resistance; requires larger copper area for thermal management. | Required for higher-power SoCs or multi-rail designs needing >2 A per channel (e.g., radar preprocessing units). | Choose when future-proofing for higher loads or consolidating multiple rails into one converter is needed. |
Compared with TPS62811QWRWYRQ1, the TPS62812QWRWYRQ1 delivers double the output current in identical footprint-enabling higher integration without layout change-while TPS62813QWRWYRQ1 trades thermal efficiency for headroom, demanding enhanced PCB copper pour to sustain 3 A at 125 °C ambient.
Availability
TPS62812QWRWYRQ1 is available at Aetrix Electronics and suitable for infotainment head units, hybrid reconfigurable clusters, and telematics control units requiring stable component supply across automotive production lifecycles.
Supply support for TPS62812QWRWYRQ1 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 solutions with decades of AEC-Q100 qualification experience.
The TPS6281x-Q1 product line was engineered specifically for automotive infotainment and ADAS power rails-delivering high efficiency, low EMI, and functional safety support in compact wettable-flank packages.
FAQ
What is the maximum continuous output current of the TPS62812QWRWYRQ1?
The TPS62812QWRWYRQ1 delivers up to 2 A continuous output current under recommended operating conditions (TA ≤ +125 °C, proper PCB thermal design). This is confirmed in the Device Comparison Table and Section 6.5 Electrical Characteristics, where ILIMH for TPS62812 is specified as 2.8–4.2 A, ensuring robust current limiting above nominal load.
Does the TPS62812QWRWYRQ1 support external clock synchronization?
Yes, the TPS62812QWRWYRQ1 supports external clock synchronization via the MODE/SYNC pin (Pin 1) across 1.8 MHz to 4 MHz. This requires a resistor from COMP/FSET to GND; synchronization is not possible if COMP/FSET is tied directly to VIN or GND. The device locks to the external clock within 50 µs.
What package type and dimensions does the TPS62812QWRWYRQ1 use?
The TPS62812QWRWYRQ1 uses a 3 mm × 2 mm VQFN-9 package with wettable flanks (RWY designation), as documented in Section 12 Mechanical, Packaging, and Orderable Information and Figure 5-1. The package includes an exposed thermal pad for enhanced heat dissipation.
How does the TPS62812QWRWYRQ1 handle light-load efficiency?
The TPS62812QWRWYRQ1 automatically transitions from forced PWM to PFM mode at light loads, reducing quiescent current to 15 µA typical and sustaining >85% efficiency down to 10 µA output. This behavior is enabled by pulling MODE/SYNC low and is detailed in Section 8.4 Device Functional Modes.
Is the TPS62812QWRWYRQ1 qualified for automotive applications?
Yes, the TPS62812QWRWYRQ1 is AEC-Q100 qualified for automotive applications (Grade 1: –40 °C to +125 °C TA) and supports functional safety system design with available documentation for ISO 26262 compliance. This is explicitly stated in the Features section and Section 1 Device Information.
TPS62812QWRWYRQ1 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:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (3x2)
TPS62812QWRWYRQ1 FAQ
1.How can I place an order for TPS62812QWRWYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62812QWRWYRQ1 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 TPS62812QWRWYRQ1 reliable?
The price and inventory of TPS62812QWRWYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62812QWRWYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62812QWRWYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62812QWRWYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62812QWRWYRQ1?
TPS62812QWRWYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62812QWRWYRQ1 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 TPS62812QWRWYRQ1?
For technical support, including TPS62812QWRWYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62812QWRWYRQ1 requirements.
6.How does Aetrix verify that TPS62812QWRWYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62812QWRWYRQ1 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 TPS62812QWRWYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62812QWRWYRQ1?
All TPS62812QWRWYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62812QWRWYRQ1, 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 TPS62812QWRWYRQ1 part is unused and in its original packaging.
Return procedure for TPS62812QWRWYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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