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Texas Instruments TPS65321QPWPRQ1
- Part No.:
- TPS65321QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS65321QPWPRQ1.pdf
- Description:
- IC REG DL BUCK/LINEAR 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
TPS65321QPWPRQ1 from Texas Instruments is an automotive power-management IC combining a 36V step-down converter with an LDO regulator. The device is designed for vehicle and industrial electronics that need a high-current buck rail plus a cleaner auxiliary linear rail from a 12V-style input supply.
As part of the TPS65321-Q1 product family, TPS65321QPWPRQ1 provides a 3.2A buck converter, 280mA LDO output, Eco-mode light-load operation, adjustable switching frequency, automotive-qualified protection features, and a 14-pin HTSSOP PowerPAD package. For engineers reviewing the TPS65321QPWPRQ1 datasheet, TPS65321QPWPRQ1 pinout, TPS65321QPWPRQ1 application, or TPS65321QPWPRQ1 equivalent, this device is widely used in automotive infotainment, cluster electronics, ADAS modules, telematics systems, industrial controllers, and 12V embedded power supplies.
Technical Context
In automotive embedded systems, TPS65321QPWPRQ1 operates as a two-output supply where the buck converter generates a high-current rail and the LDO regulator provides a secondary lower-noise output for local logic, sensors, microcontrollers, or analog loads.
The 3.6V to 36V input range and AEC-Q100 automotive qualification make the device suitable for vehicle battery environments. Eco-mode behavior reduces current consumption at light load, while the adjustable 100kHz to 2.5MHz switching range lets designers balance efficiency, EMI, and external component size.
TPS65321QPWPRQ1 is commonly used when a compact 14-pin PowerPAD package must support both efficient step-down conversion and a local LDO rail in automotive or industrial products.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | 36V step-down converter with integrated LDO regulator. |
| Input Voltage Range | 3.6V to 36V operating input range. |
| Buck Output | 3.2A step-down converter output for high-current system rail. |
| LDO Output | 280mA LDO regulator output for auxiliary or low-noise rail. |
| Switching Frequency | 100kHz to 2.5MHz adjustable switching frequency. |
| Light-Load Mode | Eco-mode operation reduces current at lighter loads. |
| Package | 14-pin HTSSOP PowerPAD package. |
| Automotive Grade | AEC-Q100 qualified TPS65321-Q1 family. |
Pinout & Package
The TPS65321QPWPRQ1 pinout includes high-voltage input, buck switch/boot pins, feedback/compensation, LDO input/output functions, enable/control pins, and PowerPAD ground.
For PCB design, the buck current path should be compact, the PowerPAD should be tied to thermal copper, and the LDO output capacitor should be placed close to the regulator pin.
| Pin / Function | PCB Design and Circuit Role |
|---|---|
| VIN | High-voltage input supply for the buck and LDO system. |
| SW | Buck switching node connected to the inductor. |
| BOOT | Bootstrap drive pin for the buck switch. |
| FB / COMP | Feedback and loop compensation for buck regulation. |
| LDO OUT | 280mA low-dropout regulator output. |
| EN | Enable input for system control. |
| PG / Reset | Status or supervisory output for rail monitoring. |
| PowerPAD / GND | Thermal and electrical ground return. |
Key Features
- 3.2A buck plus 280mA LDO supports two regulated rails.
- 3.6V to 36V input range suits automotive and industrial supplies.
- Eco-mode improves light-load efficiency.
- 100kHz to 2.5MHz switching range supports EMI planning.
- AEC-Q100 qualification supports vehicle applications.
- HTSSOP PowerPAD package improves thermal handling.
Applications
| Automotive Infotainment | ADAS Modules |
|---|---|
|
Use Scenario: Used in display and multimedia modules. IC Role: Generates buck and LDO rails from a vehicle supply. Use Value: Supports compact automotive power design. |
Use Scenario: Used in camera, radar, or sensing electronics. IC Role: Supplies logic and auxiliary rails. Use Value: Improves integration and thermal performance. |
| Telematics Systems | Industrial Controllers |
|
Use Scenario: Used in connected vehicle modules. IC Role: Provides efficient conversion and local LDO regulation. Use Value: Supports stable rail operation under vehicle supply changes. |
Use Scenario: Used in 12V or 24V embedded control systems. IC Role: Creates a high-current rail and clean secondary rail. Use Value: Reduces separate regulator count. |
Equivalent & Alternatives
When evaluating a TPS65321QPWPRQ1 equivalent, engineers should compare input-voltage range, buck current, LDO current, automotive qualification, Eco-mode behavior, package, and thermal performance.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65320QPWPRQ1 | Related TI automotive PMIC with buck plus LDO regulator architecture but different family features and current behavior. | Used in automotive systems requiring a similar two-output regulator approach. | Compare output current, frequency, package, and control behavior. |
| NCV8851BDBR2G | onsemi automotive buck regulator family with different regulator integration and package options. | Used in vehicle electronics requiring automotive-grade step-down regulation. | Compare LDO requirements, current rating, pinout, and qualification. |
Compared with TPS65320QPWPRQ1, TPS65321QPWPRQ1 provides the TPS65321-Q1 3.2A buck plus 280mA LDO feature set. TPS65321QPWPRQ1 vs NCV8851BDBR2G selection depends on whether the design requires an integrated LDO, package compatibility, output current, and automotive qualification.
Quality
TPS65321QPWPRQ1 should be sourced as original Texas Instruments components through traceable supply channels. Quality checks may include HTSSOP package inspection, top-mark validation, solderability testing, and buck/LDO output verification.
Production validation should include automotive input transient behavior, Eco-mode transition, output accuracy, LDO regulation, PowerPAD soldering, thermal behavior, and EMI-sensitive layout review.
Availability
TPS65321QPWPRQ1 available at Aetrix Electronics and is suitable for automotive, industrial, infotainment, telematics, ADAS, and embedded power systems.
Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.
For production builds, confirming AEC-Q100 grade, package, output-current requirements, lead time, lifecycle status, and sourcing continuity helps improve manufacturing stability.
Manufacturer
Texas Instruments is a global semiconductor manufacturer specializing in analog ICs, embedded processors, power-management devices, interface products, sensing solutions, and industrial semiconductor technologies.
The TPS65321-Q1 product family is an automotive 36V buck-plus-LDO regulator series for systems requiring a high-current step-down rail, auxiliary linear regulation, Eco-mode efficiency, and PowerPAD thermal performance.
FAQ
What is TPS65321QPWPRQ1 used for?
TPS65321QPWPRQ1 is used for automotive infotainment, cluster, ADAS, telematics, and industrial embedded systems requiring a buck rail plus an LDO rail.
Where can I find the TPS65321QPWPRQ1 datasheet download?
The TPS65321QPWPRQ1 datasheet is available from Texas Instruments and includes electrical characteristics, package data, pin descriptions, and application circuits.
What should be considered in TPS65321QPWPRQ1 pinout design?
Designers should keep the buck loop compact, use proper PowerPAD thermal copper, route feedback carefully, and place the LDO capacitor close to its output.
Is TPS65321QPWPRQ1 automotive qualified?
Yes. It belongs to the TPS65321-Q1 automotive product family.
What are common TPS65321QPWPRQ1 equivalent solutions?
Common candidates include TPS65320QPWPRQ1 and NCV8851BDBR2G depending on output-current, LDO, package, and automotive qualification needs.
TPS65321QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Voltage/Current - Output 1:
- 1.1V ~ 20V, 3.2A
- Voltage/Current - Output 2:
- 1.1V ~ 5.5V, 280mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- Yes
- w/Sequencer:
- No
- Voltage - Supply:
- 3V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS65321QPWPRQ1 FAQ
1.How can I place an order for TPS65321QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65321QPWPRQ1 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 TPS65321QPWPRQ1 reliable?
The price and inventory of TPS65321QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65321QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS65321QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65321QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65321QPWPRQ1?
TPS65321QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65321QPWPRQ1 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 TPS65321QPWPRQ1?
For technical support, including TPS65321QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65321QPWPRQ1 requirements.
6.How does Aetrix verify that TPS65321QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65321QPWPRQ1 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 TPS65321QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS65321QPWPRQ1?
All TPS65321QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65321QPWPRQ1, 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 TPS65321QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS65321QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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