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Texas Instruments TPS628100MQWRWYRQ1
- Part No.:
- TPS628100MQWRWYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS628100MQWRWYRQ1.pdf
- Description:
- IC REG BUCK 1.8V 4A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS628100MQWRWYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 4 A continuous output current, 1.8 V fixed output voltage, and ±1% feedback voltage accuracy in PWM mode. It operates from 2.75 V to 6 V input, supports 1.8–4 MHz adjustable switching frequency, and integrates active output discharge and power-good monitoring - deployed in ADAS sensor fusion and infotainment head units.
For engineers reviewing the TPS628100MQWRWYRQ1 datasheet, TPS628100MQWRWYRQ1 pinout, TPS628100MQWRWYRQ1 application, or TPS628100MQWRWYRQ1 equivalent, key selection criteria include its 4 A output capability at 125°C ambient, wettable-flank VQFN-9 package, forced-PWM/PFM mode control via MODE/SYNC, and precise enable with user-defined UVLO sequencing.
Technical Context
The TPS628100MQWRWYRQ1 implements peak current mode control with internal loop compensation selectable via resistor on COMP/FSET, enabling stable operation across 27–470 µF output capacitance ranges. Its 37 mΩ high-side and 15 mΩ low-side MOSFETs support high-efficiency conversion up to 150°C junction temperature.
It features a dedicated SS/TR pin for soft-start timing or external voltage tracking, a precision EN input with 1.1 V rising threshold for programmable sequencing, and a window-comparator-based PG output with 40 µs deglitch time and ±5% VFB threshold hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4 A continuous - sustains full load at +125°C ambient without derating |
| Output Voltage | Fixed 1.8 V ±1% (PWM mode) - eliminates external feedback resistors and improves regulation stability |
| Input Voltage Range | 2.75 V to 6 V - compatible with 3.3 V, 5 V, and automotive battery rails including cold-crank transients |
| Switching Frequency | 1.8 MHz to 4 MHz adjustable - enables EMI optimization and compact filter design with 0.25–0.9 µH inductors |
| Quiescent Current | 15 µA typical - extends battery life in always-on automotive modules |
| Thermal Performance | RθJA = 71.1°C/W - supports high-power density layout in 3 mm × 2 mm VQFN package |
| Power-Good Accuracy | ±5% VFB window - ensures reliable rail monitoring for safety-critical startup and fault detection |
Pinout & Package
TPS628100MQWRWYRQ1 uses a 3 mm × 2 mm VQFN-9 package with wettable flanks (RWY), optimized for automated optical inspection (AOI) and thermal reliability in automotive PCB assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 8) | Enable control input | Logic-high activation with 1.1 V rising threshold; enables precise UVLO and power-rail sequencing via external resistor divider |
| FB (Pin 5) | Feedback reference node | Internally tied to 1.8 V reference - no external resistor network required; simplifies layout and improves accuracy |
| GND (Pin 4) | Power and signal ground | Common return for VIN, SW, and control circuitry; requires low-inductance connection to minimize noise and improve transient response |
| MODE/SYNC (Pin 1) | Operating mode select / clock sync input | Pull-low for PFM/PWM auto-mode; pull-high for forced PWM; accepts 1.8–4 MHz external clock for multi-rail synchronization |
| COMP/FSET (Pin 7) | Loop compensation & frequency set | Resistor-to-GND sets both switching frequency and internal compensation - matches output capacitor range (27–470 µF) for stability |
| PG (Pin 9) | Open-drain power-good indicator | Asserts high-Z when output is within ±5% of 1.8 V; used for system-level power sequencing and fault reporting |
| SS/TR (Pin 6) | Soft-start / tracking input | Capacitor-to-GND sets startup ramp time; also accepts external voltage for supply rail tracking during power-up |
| SW (Pin 3) | Switch node | Connects to external inductor; carries high di/dt current - requires tight layout and thermal relief for MOSFET switching losses |
| VIN (Pin 2) | Main power input | Accepts 2.75–6 V; requires local 10 µF ceramic capacitor placed adjacent to pin for high-frequency decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Active Output Discharge | 50 Ω internal discharge path - ensures rapid, controlled VOUT ramp-down during shutdown, preventing back-powering of downstream circuitry |
| 100% Duty Cycle Mode | Supports dropout operation down to VOUT = VIN − 0.3 V - maintains regulation during low-input conditions like automotive cold-crank |
| Spread Spectrum Clocking (SSC) | Optional modulation - reduces peak EMI by spreading fundamental switching energy across 100 kHz bandwidth, easing CISPR-25 compliance |
| AEC-Q100 Grade 1 Qualification | Validated from –40°C to +125°C ambient - meets automotive reliability and lifetime requirements for front-end ECUs |
| Functional Safety Documentation | Available FIT rate, failure mode analysis, and safety manual - supports ISO 26262 ASIL-B system integration without additional qualification effort |
Applications
| Infotainment Head Unit | Hybrid Reconfigurable Cluster |
|---|---|
Use Scenario: Powers SoC core voltage rail (1.8 V) in multimedia display systems with dynamic load profiles and thermal constraints. IC Role / Device Role / Timing Role: Primary 4 A buck regulator supplying processor I/O and memory interface domains. Use Value: Delivers stable 1.8 V ±1% under 0–4 A load steps while maintaining <71°C/W thermal resistance in compact 3 mm × 2 mm footprint. | Use Scenario: Supplies 1.8 V domain for reconfigurable instrument cluster microcontrollers and graphics controllers requiring precise sequencing. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter with SS/TR pin enabling synchronized ramp-up with main 5 V rail. Use Value: Eliminates external feedback resistors and supports exact power-up timing via RC-controlled EN delay and soft-start capacitor. |
| Telematics Control Unit | Surround View ECU |
Use Scenario: Generates 1.8 V supply for LTE/GNSS baseband processors operating in thermally constrained enclosures. IC Role / Device Role / Timing Role: High-efficiency, low-IQ (15 µA) buck converter supporting always-on GPS tracking and cellular wake-up functions. Use Value: Maintains >85% efficiency at 10 mA load in PFM mode and transitions seamlessly to PWM above 50 mA for burst-data transmission. | Use Scenario: Provides 1.8 V rail for image signal processors (ISPs) and MIPI CSI-2 serializers in multi-camera surround-view systems. IC Role / Device Role / Timing Role: Automotive-grade synchronous buck with PG output and thermal shutdown (170°C) for fail-safe camera subsystem power management. Use Value: Enables real-time fault reporting via open-drain PG signal and prevents ISP latch-up during overtemperature events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6281020QWRWYRQ1 | Same 4 A rating and RWY package, but adjustable output (0.6–5.5 V) via external FB resistors; includes spread spectrum clocking | Used where multiple voltage rails are derived from one IC or EMI reduction is mandatory | Select when flexibility in output voltage or enhanced EMI performance outweighs BOM simplification from fixed 1.8 V |
| TPS628120MQWRWYRQ1 | 2 A output, same 1.8 V fixed output, identical pinout and package; lower RDS(on) (33 mΩ HS / 13 mΩ LS) and higher efficiency at light loads | Suitable for lower-current domains such as MCU peripherals or sensor interfaces | Choose for cost-sensitive or thermally constrained 2 A applications where full 4 A capability is unnecessary |
Compared with TPS628100MQWRWYRQ1, TPS6281020QWRWYRQ1 offers voltage flexibility and EMI mitigation at the cost of two external resistors and slightly higher quiescent current (18 µA), while TPS628120MQWRWYRQ1 reduces solution size and thermal load for 2 A use cases but cannot scale to 4 A peak demand.
Availability
TPS628100MQWRWYRQ1 is available at Aetrix Electronics and suitable for infotainment head units, hybrid reconfigurable clusters, and surround-view ECUs requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for TPS628100MQWRWYRQ1 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 over 50 years of industry experience.
The TPS6281x-Q1 product line delivers high-current, high-efficiency synchronous buck converters designed specifically for automotive ADAS, infotainment, and telematics systems demanding AEC-Q100 Grade 1 reliability and functional safety support.
FAQ
What is the output voltage of TPS628100MQWRWYRQ1 and how is it set?
The TPS628100MQWRWYRQ1 provides a fixed 1.8 V output voltage. Unlike adjustable versions in the family, it does not require external feedback resistors - the 1.8 V reference is internally trimmed and connected directly to the FB pin. This configuration ensures ±1% output accuracy in PWM mode and eliminates layout sensitivity associated with external resistor networks.
Does TPS628100MQWRWYRQ1 support external synchronization of its switching frequency?
Yes, TPS628100MQWRWYRQ1 supports external synchronization via the MODE/SYNC pin. When a 1.8–4 MHz square wave clock is applied to this pin, the device locks to the external frequency with a 50 µs settling time. Synchronization requires a resistor from COMP/FSET to GND; tying COMP/FSET to VIN or GND disables sync capability.
What thermal performance can be expected from TPS628100MQWRWYRQ1 in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1 oz copper and minimal thermal vias, TPS628100MQWRWYRQ1 achieves RθJA = 71.1°C/W. At 4 A load and 5 V input, junction temperature rise is approximately 102°C above ambient - well within the +150°C max rating. Adding 4 thermal vias under the exposed pad reduces RθJA to ~45°C/W, enabling full 4 A operation at +125°C ambient.
How does the SS/TR pin function in TPS628100MQWRWYRQ1 for power sequencing?
The SS/TR pin in TPS628100MQWRWYRQ1 serves dual roles: as a soft-start controller (via capacitor-to-GND) and as a tracking input. When used for sequencing, an external voltage ramp applied to SS/TR forces the output to follow that ramp with unity gain and 17 mV offset - enabling precise alignment with other rails such as 3.3 V or 5 V supplies during system power-up.
Is TPS628100MQWRWYRQ1 qualified for functional safety applications per ISO 26262?
TPS628100MQWRWYRQ1 is functional safety-capable: Texas Instruments provides a safety manual, FMEDA report, and FIT data to support ISO 26262 ASIL-B system development. While the device itself is not ASIL-certified, its documented failure modes and diagnostic coverage enable integration into ASIL-B architectures with appropriate system-level diagnostics.
TPS628100MQWRWYRQ1 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.75V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 4A
- Frequency - Switching:
- 1.8MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 9-VQFN-HR (3x2)
TPS628100MQWRWYRQ1 FAQ
1.How can I place an order for TPS628100MQWRWYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS628100MQWRWYRQ1 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 TPS628100MQWRWYRQ1 reliable?
The price and inventory of TPS628100MQWRWYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS628100MQWRWYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS628100MQWRWYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS628100MQWRWYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS628100MQWRWYRQ1?
TPS628100MQWRWYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS628100MQWRWYRQ1 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 TPS628100MQWRWYRQ1?
For technical support, including TPS628100MQWRWYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS628100MQWRWYRQ1 requirements.
6.How does Aetrix verify that TPS628100MQWRWYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS628100MQWRWYRQ1 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 TPS628100MQWRWYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS628100MQWRWYRQ1?
All TPS628100MQWRWYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS628100MQWRWYRQ1, 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 TPS628100MQWRWYRQ1 part is unused and in its original packaging.
Return procedure for TPS628100MQWRWYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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