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Texas Instruments TPS628110AQWRWYRQ1
- Part No.:
- TPS628110AQWRWYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS628110AQWRWYRQ1.pdf
- Description:
- IC REG BUCK ADJ 1A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS628110AQWRWYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 1 A continuous output current, fixed 1.2 V output voltage, 2.75 V to 6 V input range, and ±1% output voltage accuracy in PWM mode. It operates in forced PWM or PFM/PWM hybrid mode and supports adjustable switching frequency from 1.8 MHz to 4 MHz for EMI-sensitive infotainment power rails.
For engineers reviewing the TPS628110AQWRWYRQ1 datasheet, TPS628110AQWRWYRQ1 pinout, TPS628110AQWRWYRQ1 application, or TPS628110AQWRWYRQ1 equivalent, key selection criteria include its wettable-flank VQFN-9 package, active output discharge, precise ENABLE with user-defined UVLO, power-good window comparator, and 15 µA quiescent current in light-load PFM operation.
Technical Context
The TPS628110AQWRWYRQ1 implements peak current mode control with internal loop compensation selectable via COMP/FSET resistor, enabling stable regulation across 15–470 µF output capacitance. Its MODE/SYNC pin supports external clock synchronization (1.8–4 MHz) or logic-controlled PWM/PPM mode selection.
It integrates low-RDS(on) high-side (37–60 mΩ) and low-side (15–35 mΩ) MOSFETs, 100% duty cycle capability, and thermal shutdown at 170°C with 15°C hysteresis. The SS/TR pin enables programmable soft-start ramp time (100–200 µs) or voltage tracking for supply sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1 A continuous - supports compact power stages for ADAS sensor fusion and telematics ECUs without derating at +125°C ambient. |
| Output Voltage | Fixed 1.2 V ±1% - eliminates external feedback resistors, reduces BOM count, and ensures tight regulation for core logic supplies. |
| Input Voltage Range | 2.75 V to 6 V - compatible with 3.3 V, 5 V, and automotive battery-supplied rails including cold-crank transients down to 2.75 V. |
| Quiescent Current | 15 µA typical - enables >10-year battery-backed standby in always-on infotainment modules without compromising wake-up response. |
| Switching Frequency | 1.8 MHz to 4 MHz adjustable - allows EMI optimization and small external passive sizing (e.g., 0.47 µH inductor, 22 µF ceramic output cap). |
| Package | VQFN-9 (3 mm × 2 mm) with wettable flanks - supports automated optical inspection (AOI) and reliable solder-joint quality in automotive reflow processes. |
| Power-Good Output | Open-drain PG with 92–98% rising / 87–93% falling VFB window - provides robust rail monitoring for microcontroller reset sequencing and fault logging. |
Pinout & Package
VQFN-9 (RWY) package, 3.00 mm × 2.00 mm body size, 0.4 mm pitch, wettable flanks for solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MODE/SYNC | Digital control input | Selects PFM/PWM (low) or forced PWM (high); accepts external sync clock (1.8–4 MHz) when COMP/FSET has R-to-GND. |
| 2 - VIN | Power input | Primary input supply (2.75–6 V); requires local 5–10 µF ceramic capacitor to GND for stability and transient response. |
| 3 - SW | Switch node | Connects to internal HS/LG MOSFETs; must be routed with minimal loop area to reduce EMI and switching losses. |
| 4 - GND | Power ground | System reference for power stage and control circuitry; tied to exposed thermal pad for optimal thermal performance. |
| 5 - FB | Feedback input | Internally connected to 1.2 V reference; shorted to output for fixed-VOUT operation - no external divider needed. |
| 6 - SS/TR | Soft-start/tracking | Capacitor-to-GND sets startup ramp (100–200 µs); also accepts external voltage for supply rail tracking during sequencing. |
| 7 - COMP/FSET | Compensation/frequency set | Resistor-to-GND selects both loop compensation and switching frequency (1.8–4 MHz); tied to GND/VIN for 2.25 MHz fixed. |
| 8 - EN | Enable input | Logic-controlled enable with 1.06–1.15 V rising threshold; supports RC-based delay and programmable UVLO via external divider. |
| 9 - PG | Power-good output | Open-drain status flag indicating regulated output within ±5% window; pulled high externally for MCU reset or system monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Active Output Discharge | Integrated 50 Ω discharge path ensures rapid VOUT collapse on disable - prevents floating rail issues in multi-rail systems requiring strict power-down ordering. |
| Precision Enable Input | 1.1 V rising threshold with 100 mV hysteresis enables accurate undervoltage lockout and controlled power-up sequencing using simple resistor dividers. |
| Adjustable Soft-Start | SS/TR pin supports 100–200 µs ramp time via external capacitor - limits inrush current and avoids input voltage droop during cold start in battery-powered clusters. |
| Spread Spectrum Clocking (Optional) | Configurable via device variant selection (not enabled on TPS628110AQWRWYRQ1) - reduces peak EMI by spreading switching energy across 1.8–4 MHz band when required. |
| Thermal Protection | 170°C junction shutdown with 15°C hysteresis and RθJA = 71.1°C/W - maintains reliability under sustained 1 A load in sealed enclosures up to +125°C ambient. |
Applications
| Infotainment Head Unit | Hybrid and Reconfigurable Cluster |
|---|---|
Use Scenario: Powering SoC core voltage (1.2 V) in head units with dual-display graphics and voice processing. IC Role / Device Role / Timing Role: Primary 1 A buck regulator supplying processor core rail with fast transient response and low-noise operation. Use Value: ±1% output accuracy and 15 µA quiescent current ensure stable CPU operation and extended battery runtime during display-off states. |
Use Scenario: Generating 1.2 V supply for reconfigurable instrument cluster microcontrollers and display drivers. IC Role / Device Role / Timing Role: Fixed-output buck converter providing sequenced, monitored power to safety-critical cluster logic. Use Value: Power-good window comparator and precise ENABLE enable deterministic boot timing and fail-safe shutdown coordination. |
| Telematics Control Unit | Surround View ECU |
Use Scenario: Supplying 1.2 V to LTE/GNSS modem baseband processors in vehicle connectivity modules. IC Role / Device Role / Timing Role: Automotive-grade DC/DC converter delivering clean, regulated core voltage under wide-input battery conditions. Use Value: 2.75–6 V input range and AEC-Q100 Grade 1 qualification ensure uninterrupted operation during cold-crank and load-dump events. |
Use Scenario: Powering image signal processors (ISPs) and FPGA fabric in surround-view camera fusion ECUs. IC Role / Device Role / Timing Role: High-efficiency 1 A buck regulator supporting dynamic load steps from sensor streaming to AI inference bursts. Use Value: Peak current mode control and 1.8–4 MHz frequency adjustability minimize output ripple and simplify EMI filter design near sensitive analog video paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS628112AQWRWYRQ1 | Same 1 A, 1.2 V fixed output, but includes spread spectrum clocking (SSC) enabled. | Preferred where EMI compliance (CISPR 25 Class 5) is critical and SSC is required to pass conducted/radiated emissions tests. | Select TPS628112AQWRWYRQ1 if SSC is mandated; otherwise TPS628110AQWRWYRQ1 offers identical regulation and lower cost. |
| TPS628100MQWRWYRQ1 | 4 A version, same package, fixed 1.8 V output, higher RDS(on) (HS: 45 mΩ typ), higher IQ (21 µA). | Suitable for higher-current 1.8 V rails (e.g., DDR memory termination), not drop-in for 1.2 V core logic. | Choose only when current demand exceeds 1 A or output voltage must be 1.8 V; not a functional replacement for TPS628110AQWRWYRQ1. |
Compared with TPS628112AQWRWYRQ1, the TPS628110AQWRWYRQ1 omits spread spectrum but retains identical regulation accuracy, thermal performance, and sequencing features-making it optimal for cost-sensitive, EMI-moderate automotive domains. Against TPS628100MQWRWYRQ1, it trades current capacity and voltage level for tighter core-rail tolerance and lower quiescent draw.
Availability
TPS628110AQWRWYRQ1 is available at Aetrix Electronics and suitable for infotainment head units, hybrid instrument clusters, and telematics control units requiring stable component supply with AEC-Q100 qualification and long-term automotive lifecycle support.
Supply support for TPS628110AQWRWYRQ1 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 ICs, with decades of automotive qualification expertise and functional safety documentation support.
The TPS6281x-Q1 product line delivers high-efficiency, small-footprint synchronous buck converters designed specifically for automotive infotainment, ADAS, and body electronics demanding AEC-Q100 Grade 1 operation and functional safety readiness.
FAQ
What is the output voltage setting of the TPS628110AQWRWYRQ1?
The TPS628110AQWRWYRQ1 is a fixed-output converter with a nominal output voltage of 1.2 V. Its feedback pin (FB) is internally connected to the 1.2 V reference, eliminating the need for external resistive dividers. Output voltage accuracy is ±1% in PWM mode across –40°C to +125°C ambient temperature, ensuring reliable core rail regulation for automotive microcontrollers and SoCs.
Does the TPS628110AQWRWYRQ1 support external clock synchronization?
Yes, the TPS628110AQWRWYRQ1 supports external clock synchronization via the MODE/SYNC pin, but only when a resistor is connected from the COMP/FSET pin to GND. If COMP/FSET is tied directly to GND or VIN (setting fixed 2.25 MHz), external synchronization is disabled. The accepted sync frequency range is 1.8 MHz to 4 MHz, with locking achieved within 50 µs.
What package type and dimensions does the TPS628110AQWRWYRQ1 use?
The TPS628110AQWRWYRQ1 uses the RWY package: a 9-pin VQFN measuring 3.00 mm × 2.00 mm with 0.4 mm pitch and wettable flanks. This package enables AOI-compatible solder joints and achieves RθJA = 71.1°C/W, supporting 1 A continuous operation at +125°C ambient when properly mounted on a 2-layer PCB with thermal vias to inner ground planes.
How does the ENABLE pin function on the TPS628110AQWRWYRQ1?
The ENABLE (EN) pin on the TPS628110AQWRWYRQ1 features a precise 1.1 V rising threshold and 1.0 V falling threshold, allowing programmable undervoltage lockout and controlled power sequencing. Pulling EN low disables the device, reducing quiescent current to ≤26 µA. Leaving EN unconnected is prohibited; it must be actively driven or pulled high via a resistor to ensure predictable startup behavior.
Is spread spectrum clocking enabled on the TPS628110AQWRWYRQ1?
No, spread spectrum clocking (SSC) is not enabled on the TPS628110AQWRWYRQ1. Per the Device Comparison Table, SSC is OFF for this variant. For applications requiring EMI reduction via SSC, the pin-compatible TPS628112AQWRWYRQ1 (same 1 A, 1.2 V output) should be selected instead - it integrates optional SSC while maintaining identical electrical and thermal specifications.
TPS628110AQWRWYRQ1 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:
- 1A
- 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)
TPS628110AQWRWYRQ1 FAQ
1.How can I place an order for TPS628110AQWRWYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS628110AQWRWYRQ1 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 TPS628110AQWRWYRQ1 reliable?
The price and inventory of TPS628110AQWRWYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS628110AQWRWYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS628110AQWRWYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS628110AQWRWYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS628110AQWRWYRQ1?
TPS628110AQWRWYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS628110AQWRWYRQ1 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 TPS628110AQWRWYRQ1?
For technical support, including TPS628110AQWRWYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS628110AQWRWYRQ1 requirements.
6.How does Aetrix verify that TPS628110AQWRWYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS628110AQWRWYRQ1 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 TPS628110AQWRWYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS628110AQWRWYRQ1?
All TPS628110AQWRWYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS628110AQWRWYRQ1, 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 TPS628110AQWRWYRQ1 part is unused and in its original packaging.
Return procedure for TPS628110AQWRWYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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