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Texas Instruments TPS628132MQWRWYRQ1
- Part No.:
- TPS628132MQWRWYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS628132MQWRWYRQ1.pdf
- Description:
- IC REG BUCK 1.8V 3A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,875
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Product details
Overview
TPS628132MQWRWYRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 3A continuous output current, with input voltage range 2.75V–6V, fixed 1.8V output, ±1% feedback voltage accuracy in PWM mode, and adjustable switching frequency from 1.8MHz to 4MHz. It serves as a primary power rail regulator in ADAS sensor fusion ECUs.
For engineers reviewing the TPS628132MQWRWYRQ1 datasheet, TPS628132MQWRWYRQ1 pinout, TPS628132MQWRWYRQ1 application, or TPS628132MQWRWYRQ1 equivalent, key selection criteria include its 3A output capability at 125°C ambient, spread-spectrum clocking option, active output discharge, and precise enable with user-defined UVLO for rail sequencing in infotainment and cluster systems.
Technical Context
The TPS628132MQWRWYRQ1 implements peak current mode control with internally compensated loop and three selectable compensation settings tied to COMP/FSET resistor value-enabling stable operation across 27µF–470µF output capacitance ranges. Its MODE/SYNC pin supports both forced PWM and automatic PFM/PWM transition, plus external synchronization from 1.8MHz to 4MHz without additional passive components.
It integrates low-RDS(on) power MOSFETs (HS: 37–60mΩ, LS: 15–35mΩ at VIN ≥ 5V), 100% duty cycle capability, and a dedicated SS/TR pin enabling programmable soft-start ramp or voltage tracking for multi-rail sequencing-critical for hybrid cluster and telematics control unit power-up integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous; supports high-temperature operation in automotive under-hood environments up to +125°C ambient. |
| Output Voltage | Fixed 1.8V; eliminates external feedback divider, reducing BOM count and layout sensitivity. |
| Input Voltage Range | 2.75V–6V; compatible with 3.3V, 5V, and 12V intermediate bus architectures via LDO pre-regulation. |
| Switching Frequency | 1.8MHz–4MHz adjustable; enables compact magnetics and avoids AM band interference while supporting EMI reduction via spread spectrum. |
| Quiescent Current | 15µA typical; maintains ultra-low standby power in always-on vehicle networks without compromising wake-up responsiveness. |
| Feedback Accuracy | ±1% in PWM mode; ensures tight regulation for noise-sensitive analog and mixed-signal loads like image sensors and ADCs. |
| Power-Good Output | Open-drain PG with window comparator (92–98% rising, 87–93% falling); provides reliable system-level power sequencing and fault detection. |
Pinout & Package
The TPS628132MQWRWYRQ1 is housed in a 3mm × 2mm VQFN package with wettable flanks (RWY, 9-pin), optimized for automated optical inspection (AOI) and thermal performance in dense automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE/SYNC | Digital control input | Selects PFM/PWM auto-mode (low) or forced PWM (high); also accepts external sync clock 1.8–4MHz for EMI-aligned multi-converter systems. |
| SW | Power switch node | Connects internal high-side and low-side MOSFETs; requires low-inductance routing to minimize switching losses and EMI. |
| FB | Feedback reference | Internally tied to 1.8V output; no external resistor divider needed-reduces component count and improves accuracy stability. |
| VIN | Main power input | Accepts 2.75V–6V; requires local 5–10µF ceramic input capacitor placed adjacent to pin for high-frequency decoupling. |
| GND | Power ground | Primary return path for power and control circuits; must be connected to solid thermal pad for optimal thermal dissipation. |
| EN | Enable control | Logic-compatible input with 1.06–1.15V rising threshold; supports RC-based delay and external UVLO for controlled rail activation. |
| PG | Power-good indicator | Open-drain output asserting high-Z when VOUT is within ±5% of 1.8V; used for downstream processor reset or sequencer handoff. |
| SS/TR | Soft-start/tracking | Capacitor-connected pin sets startup ramp time or tracks external voltage source-enables precise rail sequencing in multi-supply domains. |
| COMP/FSET | Compensation & frequency set | Resistor-to-GND selects both switching frequency (1.8–4MHz) and internal compensation setting for stable operation with 27–470µF COUT. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, meeting automotive reliability and lifetime requirements for safety-critical subsystems. |
| Active output discharge | 50Ω internal discharge path rapidly collapses VOUT on shutdown-prevents floating rails and unintended logic states during power-down sequences. |
| Spread spectrum clocking (SSC) | Optional modulation reduces peak EMI by spreading switching energy across 1.8–4MHz band-simplifies compliance with CISPR 25 Class 5 radiated emissions limits. |
| 100% duty cycle mode | Enables dropout operation down to VOUT = VIN − 0.1V-critical for maintaining 1.8V supply during cold-crank transients where battery dips to 3.0V. |
| Wettable flanks package | RWY VQFN enables reliable solder joint inspection via AOI, improving manufacturing yield and field-reliability assurance in automotive production lines. |
Applications
| Infotainment Head Unit | Hybrid and Reconfigurable Cluster |
|---|---|
Use Scenario: Powers SoC core voltage rail (1.8V) in head unit main processor alongside DDR memory and display interface ICs. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated 1.8V at up to 3A with fast transient response to handle burst-mode CPU activity. Use Value: ±1% output accuracy and 15µA quiescent current ensure stable digital logic operation and low standby power during vehicle sleep modes. | Use Scenario: Supplies 1.8V to reconfigurable graphics controller and instrument cluster microcontroller in dual-domain display architecture. IC Role / Device Role / Timing Role: Sequenced power rail enabled via SS/TR pin tracking to match display panel power-up timing and avoid visual artifacts. Use Value: Active output discharge prevents ghosting or residual illumination during rapid power cycling between driving and parking modes. |
| Telematics Control Unit | Surround View ECU |
Use Scenario: Provides 1.8V supply to LTE/Wi-Fi modem baseband processor and GNSS receiver in always-connected TCU modules. IC Role / Device Role / Timing Role: Regulator with precise EN threshold and PG output coordinates safe boot sequence with cellular modem firmware initialization. Use Value: Spread spectrum clocking minimizes RF interference coupling into sensitive GNSS front-end, preserving position accuracy. | Use Scenario: Delivers 1.8V to image signal processors (ISPs) and MIPI CSI-2 serializer ICs in 4-camera surround-view processing module. IC Role / Device Role / Timing Role: Fixed-output, low-noise buck converter supplying noise-sensitive analog front-end and ADC reference domains. Use Value: Low RDS(on) MOSFETs and 2.25MHz nominal switching reduce output ripple to <5mVpp, preventing image banding in high-resolution video streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS628130AQWRWYRQ1 | Fixed 1.2V output; identical 3A rating, package, and feature set except output voltage. | Suitable for SoC I/O or memory interface rails requiring 1.2V instead of 1.8V; same thermal and layout footprint. | Select when system architecture mandates 1.2V core logic voltage and shares identical sequencing, EMI, and reliability requirements. |
| TPS628122MQWRWYRQ1 | 2A output, fixed 1.8V, same RWY package and pinout; lower current capability but identical control features. | Applicable in cost-optimized or lower-power variants of cluster or telematics modules where 2A suffices. | Choose for BOM rationalization across platforms where 2A headroom is adequate and thermal constraints are less stringent. |
Compared with TPS628130AQWRWYRQ1 and TPS628122MQWRWYRQ1, the TPS628132MQWRWYRQ1 uniquely delivers 3A at fixed 1.8V in the RWY package-making it the only direct fit for 1.8V SoC core rails demanding full 3A continuous current with automotive-grade thermal and functional safety support.
Availability
TPS628132MQWRWYRQ1 is available at Aetrix Electronics and suitable for infotainment head units, hybrid clusters, and surround-view ECUs requiring stable component supply with full AEC-Q100 traceability and long-term automotive lifecycle support.
Supply support for TPS628132MQWRWYRQ1 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 innovation in high-reliability electronics.
The TPS6281x-Q1 product line was engineered specifically for automotive ADAS and infotainment systems-delivering high-efficiency, small-footprint, and functionally safe DC/DC conversion in harsh thermal and EMI environments.
FAQ
What is the output voltage of the TPS628132MQWRWYRQ1?
The TPS628132MQWRWYRQ1 has a fixed 1.8V output voltage. This eliminates the need for external feedback resistors, simplifying design and improving regulation accuracy to ±1% in PWM mode. The fixed output is factory-trimmed and does not require configuration-making it ideal for dedicated 1.8V core rails in automotive SoCs and ISPs. All electrical characteristics, including load and line regulation, are specified relative to this 1.8V nominal output.
Does the TPS628132MQWRWYRQ1 support external synchronization?
Yes, the TPS628132MQWRWYRQ1 supports external synchronization via the MODE/SYNC pin, accepting clock signals from 1.8MHz to 4MHz. Synchronization is enabled only when a resistor is connected from COMP/FSET to GND-direct tie to VIN or GND disables sync capability. The device locks to the external clock within 50µs and maintains phase alignment, allowing coordinated switching across multiple converters to reduce system-level EMI peaks.
What package type and thermal performance does the TPS628132MQWRWYRQ1 use?
The TPS628132MQWRWYRQ1 uses a 3mm × 2mm VQFN package with wettable flanks (RWY, 9-pin). Its thermal metrics include RθJA = 71.1°C/W and RθJB = 16.4°C/W, enabling 3A continuous operation at +125°C ambient when mounted on a 2-layer board with 1-in² 2-oz copper thermal pad. The wettable flanks support automated optical inspection for solder joint quality assurance in automotive manufacturing.
How does the SS/TR pin function on the TPS628132MQWRWYRQ1?
The SS/TR pin on the TPS628132MQWRWYRQ1 serves dual roles: soft-start control and voltage tracking. When a capacitor is connected to GND, it sets the output ramp time (e.g., 4.7nF ≈ 1ms). When driven by an external voltage, it forces the 1.8V output to track that source-enabling precise sequencing with other rails like 3.3V or 5V supplies. Tracking gain is unity (VFB/VSS/TR = 1), with 17mV offset, ensuring accurate alignment during power-up and wake-from-sleep transitions.
Is spread spectrum clocking enabled by default on the TPS628132MQWRWYRQ1?
No, spread spectrum clocking (SSC) is optional and disabled by default on the TPS628132MQWRWYRQ1. It is activated only when the SSC pin (not present on this variant) is asserted-however, TPS628132MQWRWYRQ1 does not include an SSC pin. Instead, EMI reduction is achieved through inherent 2.25MHz nominal frequency, tight output regulation, and compatibility with external synchronization to distribute switching energy. For SSC-capable variants, refer to part numbers ending in "20", "26", or "3H".
TPS628132MQWRWYRQ1 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:
- 3A
- 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)
TPS628132MQWRWYRQ1 FAQ
1.How can I place an order for TPS628132MQWRWYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS628132MQWRWYRQ1 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 TPS628132MQWRWYRQ1 reliable?
The price and inventory of TPS628132MQWRWYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS628132MQWRWYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS628132MQWRWYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS628132MQWRWYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS628132MQWRWYRQ1?
TPS628132MQWRWYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS628132MQWRWYRQ1 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 TPS628132MQWRWYRQ1?
For technical support, including TPS628132MQWRWYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS628132MQWRWYRQ1 requirements.
6.How does Aetrix verify that TPS628132MQWRWYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS628132MQWRWYRQ1 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 TPS628132MQWRWYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS628132MQWRWYRQ1?
All TPS628132MQWRWYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS628132MQWRWYRQ1, 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 TPS628132MQWRWYRQ1 part is unused and in its original packaging.
Return procedure for TPS628132MQWRWYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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