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Texas Instruments TPS65310AQRVJRQ1
- Part No.:
- TPS65310AQRVJRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
TPS65310AQRVJRQ1.pdf
- Description:
- IC REG 5OUT BUCK/BST/LNR 56VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,138
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Product details
Overview
TPS65310AQRVJRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive power-management IC integrating one high-voltage buck controller (4–40 V input, 60 V transient), two synchronous buck converters (up to 2 A each), one asynchronous boost converter (1-A switch), and one adjustable 350-mA LDO - all with independent voltage monitoring, SPI control, and integrated window watchdog for ASIL-B–capable safety systems in ADAS domain controllers.
For engineers reviewing the TPS65310AQRVJRQ1 datasheet, TPS65310AQRVJRQ1 pinout, TPS65310AQRVJRQ1 application, or TPS65310AQRVJRQ1 equivalent, this page delivers verified electrical parameters, validated 56-pin QFN (RVJ) package mapping, confirmed functional partitioning across five regulated rails, and real-world safety-critical use context - eliminating ambiguity in automotive power architecture selection.
Technical Context
The TPS65310AQRVJRQ1 implements a hierarchical power architecture: a primary buck controller (BUCK1) operates at 490 kHz with pseudo-random frequency hopping to reduce EMI, feeding dual out-of-phase 0.98-MHz buck converters (BUCK2/BUCK3) and an asynchronous 0.98-MHz boost stage. All regulators feature soft-start, independent voltage sensing via dedicated VSENSE pins, and overvoltage/undervoltage detection with programmable thresholds.
Its safety infrastructure includes SPI-configurable fault reporting, hardware-based window watchdog with external trigger (WD pin), independent rail monitoring (VMON1–VMON3), thermal shutdown, and external PMOS gate driver (GPFET) supporting 80-V transients - enabling compliance with ISO 26262 requirements for diagnostic coverage in automotive safety islands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 40 V continuous; sustains 60-V transients (80 V with external PMOS) |
| Buck Controller (BUCK1) | 490-kHz fixed switching frequency; 0.6-A peak gate drive; supports external NMOS |
| Buck Converters (BUCK2/BUCK3) | 0.98-MHz switching; 2-A max output; out-of-phase operation reduces input ripple |
| Boost Converter | 0.98-MHz switching; 1-A integrated switch; adjustable 4.5–18.5 V output |
| LDO Output | Adjustable 0.8–5.25 V; 350-mA max; 143-mV dropout @ 350 mA, 25°C |
| Safety Features | SPI diagnostics, window watchdog, independent UV/OV monitoring per rail, thermal/overcurrent protection on all outputs |
| Package | 56-pin QFN (RVJ), 8.0 mm × 8.0 mm, thermally enhanced with exposed pad |
Pinout & Package
TPS65310AQRVJRQ1 uses a 56-pin VQFN (RVJ) package with 0.5-mm pitch and exposed thermal pad for automotive-grade thermal performance (RθJA = 27°C/W). Pin functions are validated per TI SLVSC15H datasheet Rev H (Dec 2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSSENSE (Pin 1) | Battery sense input | Monitors main battery line for undervoltage; triggers IRQ interrupt on fault |
| VINPROT (Pin 4) | Main protected supply input | Feeds gate drivers and Bandgap2; rated for 60-V transients |
| BOOT1–BOOT3 (Pins 10, 29, 42) | Bootstrap capacitor nodes | Supply gate-drive voltage for high-side FETs of BUCK1/2/3; require ceramic caps |
| PH1–PH5 (Pins 12, 31, 40, 23) | Switching nodes | Connect to external inductors; PH1 drives BUCK1 external FETs; PH2/PH3 drive BUCK2/BUCK3; PH5 drives boost switch |
| VSENSE1–VSENSE5 (Pins 19, 35, 36, 52, 21) | Feedback inputs | Resistor-divider inputs for closed-loop regulation of BUCK1/2/3, LDO, and boost outputs |
| SPI Interface (CSN, SCK, SDI, SDO, Pins 44, 46, 45, 47) | Digital control interface | 4-wire SPI for real-time configuration, status readback, and fault logging |
| WD (Pin 43) | Watchdog trigger input | MCU-driven pulse required to prevent system reset; supports windowed timing |
| GPFET (Pin 3) | External PMOS gate driver | Drives high-side protection FET to sustain 80-V transients and enable fail-safe shutdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM H1B and CDM C3B ESD ratings |
| Five independent regulated rails | BUCK1 (preregulator), BUCK2/BUCK3 (postregulators), BOOST (auxiliary), LDO (low-noise I/O) |
| Hardware safety co-processor | Integrated window watchdog, independent rail monitoring, and SPI-accessible fault registers |
| Transient-hardened input stage | Supports 60-V transients natively; extends to 80 V using external PMOS driven by GPFET pin |
| Out-of-phase BUCK2/BUCK3 operation | Reduces input capacitance requirement and lowers RMS input current ripple by 30% vs. in-phase |
Applications
| ADAS Domain Controller Power Supply | Automotive Safety Island |
|---|---|
|
Use Scenario: Centralized power management for radar, camera, and sensor fusion ECUs requiring multiple isolated, monitored voltage rails under ISO 26262 ASIL-B constraints. IC Role / Device Role / Timing Role: Primary PMIC providing BUCK1 (5 V for MCU core), BUCK2/BUCK3 (1.2 V/3.3 V for SerDes and peripherals), BOOST (12 V for actuators), and LDO (1.8 V for ADC reference). Use Value: Reduces board area by consolidating five regulators + watchdog + monitoring into single RVJ package; enables diagnostic coverage >90% via SPI-accessible fault flags. |
Use Scenario: Fail-operational subsystem powering airbag controllers, brake-by-wire modules, or steering ECUs where loss of any rail must trigger deterministic safe state. IC Role / Device Role / Timing Role: Safety-critical power supervisor with independent VMON1–VMON3 inputs, hardware window watchdog (WD), and GPFET-driven external PMOS for battery-line isolation during faults. Use Value: Achieves ASIL-B compliance through hardware-enforced UV/OV lockout, thermal shutdown, and external FET cutoff - no software dependency for critical shutdown path. |
| Automotive Infotainment Head Unit | Electric Power Steering (EPS) ECU |
|
Use Scenario: Multi-rail DC distribution for SoC, display, audio codec, and CAN transceivers in head units with always-on wake capability. IC Role / Device Role / Timing Role: Provides low-quiescent LPM0 mode (44 µA @ 25°C) with WAKE pin activation, SPI-controlled rail sequencing, and VIO-supply monitoring for interface integrity. Use Value: Enables <100-µA system standby current while retaining fast wake response (<10 ms) and full rail reconfiguration via SPI before SoC boot. |
Use Scenario: High-reliability power solution for EPS motor control units operating in harsh under-hood environments with wide input voltage swings and thermal stress. IC Role / Device Role / Timing Role: Delivers robust 5-V BUCK1 for MCU, 3.3-V BUCK2 for gate drivers, 12-V BOOST for motor drivers, and thermal shutdown via VT pin connected to NTC. Use Value: Sustains 80-V load-dump transients using external PMOS; maintains regulation down to 4 V cold-crank; junction temp monitoring up to 150°C ensures operation at under-hood hot spots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive power-management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65311AQRVJRQ1 | Pin-compatible revision with updated BUCK2/BUCK3 current-limit specs (2.4–3.5 A vs. 2.5–3.3 A) and tighter shutdown comparator reference (1 mV vs. 10 mV) | Same safety architecture and rail count; preferred for new designs requiring latest AEC-Q100 test data and improved current-sense accuracy | Select TPS65311AQRVJRQ1 for production designs targeting full lifecycle support beyond 2026; TPS65310AQRVJRQ1 remains valid for legacy qualification continuity. |
| MAX20091ATPA/V+ | 3-rail PMIC (2 buck + 1 LDO); lacks boost converter, external PMOS driver, and window watchdog; uses I²C instead of SPI | Suitable for lower-complexity ASIL-B systems without actuator drivers or stringent transient immunity needs | Choose MAX20091ATPA/V+ only when system requires fewer rails, accepts I²C interface, and does not need 80-V transient handling or hardware watchdog independence. |
Compared with TPS65310AQRVJRQ1, TPS65311AQRVJRQ1 offers enhanced current-limit precision and updated qualification data but identical pinout and functionality, while MAX20091ATPA/V+ provides reduced integration and interface flexibility at the cost of missing key safety features like window watchdog and external FET control.
Availability
TPS65310AQRVJRQ1 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, safety island ECUs, infotainment head units, and electric power steering systems requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant traceability.
Supply support for TPS65310AQRVJRQ1 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 ISO/TS 16949-certified manufacturing.
The TPS65310AQRVJRQ1 belongs to TI's automotive safety power-management portfolio, designed specifically to meet ASIL-B requirements in ADAS and chassis control systems through integrated diagnostics, hardware redundancy, and transient-hardened architecture.
FAQ
What is the maximum input voltage transient the TPS65310AQRVJRQ1 can withstand without external components?
The TPS65310AQRVJRQ1 withstands 60-V transients on the VINPROT pin per its absolute maximum rating. For 80-V transients - common in automotive load-dump events - an external P-channel MOSFET must be used with the GPFET pin driving its gate. This configuration is explicitly validated in the datasheet and enables compliance with ISO 7637-2 Pulse 5a.
Does the TPS65310AQRVJRQ1 support hardware-based functional safety diagnostics?
Yes. The TPS65310AQRVJRQ1 integrates multiple hardware safety mechanisms: independent voltage monitors (VMON1–VMON3) per rail, a window watchdog with external WD pin, thermal shutdown, short-circuit protection on all outputs, and SPI-accessible fault registers. These features collectively support ASIL-B diagnostic coverage without software intervention for critical failure modes.
Can the TPS65310AQRVJRQ1 generate all five output rails simultaneously?
Yes. The TPS65310AQRVJRQ1 is designed to operate all five rails concurrently: BUCK1 (preregulator), BUCK2 and BUCK3 (dual postregulators), BOOST (asynchronous), and LDO (linear). Electrical characteristics confirm combined active current consumption of 53 mA (with EXTSUP open) at 13-V input and 25°C, validating simultaneous full-load operation.
What package type and thermal performance does the TPS65310AQRVJRQ1 use?
The TPS65310AQRVJRQ1 uses a 56-pin VQFN (RVJ) package measuring 8.0 mm × 8.0 mm with 0.5-mm pitch and an exposed thermal pad. Its thermal resistance is RθJA = 27°C/W (JEDEC standard), RθJC(bot) = 0.8°C/W, and RθJB = 8°C/W - enabling reliable operation up to 125°C ambient when mounted on a 2-layer PCB with 1-in² copper pour under the thermal pad.
How does the TPS65310AQRVJRQ1 handle startup sequencing and fault recovery?
The TPS65310AQRVJRQ1 implements hardware-controlled soft-start on all regulators to limit inrush current, and supports configurable power-up sequencing via SPI register writes. Fault recovery is handled through dedicated RESN (system reset) and PRESN (peripheral reset) pins, which assert open-drain signals upon UV/OV/thermal events - allowing external logic to initiate controlled restart without MCU involvement.
TPS65310AQRVJRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (3), Step-Up (Boost) (1), Linear (LDO) (1)
- Number of Outputs:
- 5
- Frequency - Switching:
- 980kHz
- Voltage/Current - Output 1:
- Controller
- Voltage/Current - Output 2:
- 0.8V ~ 5.5V, 2A
- Voltage/Current - Output 3:
- 0.8V ~ 5.5V, 2A
- w/LED Driver:
- Yes
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 4.8V ~ 40V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-VQFN (8x8)
TPS65310AQRVJRQ1 FAQ
1.How can I place an order for TPS65310AQRVJRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65310AQRVJRQ1 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 TPS65310AQRVJRQ1 reliable?
The price and inventory of TPS65310AQRVJRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65310AQRVJRQ1 is usually 5 days.
3.What payment methods are accepted for TPS65310AQRVJRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65310AQRVJRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65310AQRVJRQ1?
TPS65310AQRVJRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65310AQRVJRQ1 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 TPS65310AQRVJRQ1?
For technical support, including TPS65310AQRVJRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65310AQRVJRQ1 requirements.
6.How does Aetrix verify that TPS65310AQRVJRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65310AQRVJRQ1 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 TPS65310AQRVJRQ1 meets industry standards.
7.What is the process for return or replacement of TPS65310AQRVJRQ1?
All TPS65310AQRVJRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65310AQRVJRQ1, 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 TPS65310AQRVJRQ1 part is unused and in its original packaging.
Return procedure for TPS65310AQRVJRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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