My Inquiry
My Account
Texas Instruments TPS65931211RWERQ1
- Part No.:
- TPS65931211RWERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
TPS65931211RWERQ1.pdf
- Description:
- AUTOMOTIVE 2.8-V TO 5.5-V PMIC W
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65931211RWERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive power management IC (PMIC) integrating five buck regulators (four configurable for multi-phase operation up to 14 A total), four LDOs (three 500 mA bypass-capable, one 300 mA low-noise), real-time clock, 32-kHz crystal oscillator, dual I²C/SPI interfaces, and functional safety features including ASIL-B hardware integrity, watchdog with Q&A mode, dual error signal monitors, thermal shutdown, and CRC-protected NVM. It targets safety-critical ADAS and digital cluster power domains.
For engineers reviewing the TPS65931211RWERQ1 datasheet, TPS65931211RWERQ1 pinout, TPS65931211RWERQ1 application, or TPS65931211RWERQ1 equivalent, key selection criteria include its 5-buck/4-LDO topology, ASIL-B hardware integrity, 2.2/4.4 MHz synchronized switching, 32-kHz RTC clock source, and VQFNP-56 package with integrated thermal pad - all validated for automotive infotainment, ADAS, and body control modules requiring ISO 26262 system-level compliance.
Technical Context
The TPS65931211RWERQ1 implements a hierarchical power architecture: BUCK1–BUCK4 support flexible multi-phase configurations (e.g., BUCK12/123/1234) with shared feedback paths and current sharing, while BUCK5 operates independently at 2 A. All bucks feature internal soft-start, short-circuit protection, and selectable 2.2/4.4 MHz switching with spread-spectrum modulation for EMC reduction.
Its safety subsystem includes two dedicated error signal monitors (ESM) with level/PWM mode selection, input supply voltage monitoring, per-rail under/overvoltage and overcurrent detection, thermal pre-warning at +115°C, and CRC validation of NVM and configuration registers - enabling systematic capability up to ASIL-D at the system level while maintaining ASIL-B hardware integrity per ISO 26262 Part 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 5.5 V - supports direct connection to automotive battery rail with cold-crank tolerance. |
| Buck Output Current | BUCK4: 4 A single-phase or 3.5 A multi-phase; BUCK1–BUCK3: 3.5 A each; BUCK5: 2 A - enables scalable power delivery across SoC cores, memory, and peripherals. |
| LDO Output Current | LDO1–LDO3: 500 mA with bypass mode; LDO4: 300 mA low-noise - supplies noise-sensitive analog/RTC circuits without external filtering. |
| Switching Frequency | 2.2 MHz or 4.4 MHz (internal) or 1–4 MHz (external sync) - allows EMI optimization and small external inductor sizing. |
| Thermal Shutdown Threshold | +150°C with +115°C pre-warning - provides fail-safe thermal management for under-hood environments. |
| NVM Integrity Protection | CRC-protected non-volatile memory - prevents boot into undefined state if configuration corruption is detected. |
| Functional Safety Rating | Hardware integrity up to ASIL-B per ISO 26262; systematic capability up to ASIL-D - supports integration into safety-critical vehicle domains. |
Pinout & Package
TPS65931211RWERQ1 uses an 8 mm × 8 mm, 56-pin VQFNP (RWE) package with 0.5-mm pitch and exposed thermal pad (PGND) for enhanced thermal dissipation in automotive under-dash applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_B1–FB_B5 | Buck feedback inputs | Enable precise output voltage regulation; FB_B1/FB_B2 support differential sensing in multi-phase BUCK12/123/1234 configurations. |
| PVIN_B1–PVIN_B5 | Buck input power rails | Each connects to dedicated input source (typically VCCA); decoupling required per regulator for transient response. |
| SW_B1–SW_B5 | Buck switch node outputs | Drive external high-side MOSFETs or connect to integrated power stages; dual SW pins per buck (e.g., SW_B1, SW_B1) enable parallel routing. |
| VOUT_LDO1–VOUT_LDO4 | LDO regulated outputs | Deliver stable 0.6–3.3 V (LDO1–LDO3) or 1.2–3.3 V (LDO4); LDO4 optimized for <10 µVRMS noise in RTC/analog supply. |
| GPIO1–GPIO11 | Configurable I/O signals | Support power sequencing triggers, wake-up/sleep requests, error signaling (nERR_MCU/nERR_SoC), and clock distribution (CLK32KOUT, SYNCCLKOUT). |
| OSC32KIN/OSC32KOUT/OSC32KCAP | 32-kHz crystal interface | Enable precision RTC timing; OSC32KCAP connects to VRTC via internal 100 Ω resistor for capacitor biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-phase BUCK configuration | Four BUCKs (BUCK1–BUCK4) support programmable phase alignment and current sharing - delivers up to 14 A from a single rail while reducing input ripple and thermal stress. |
| Functional safety monitoring | Dual ESM inputs with selectable level/PWM mode, plus per-rail UV/OV/OC detection - enables real-time fault injection and response coordination with MCU/SoC safety managers. |
| Backup power management | VBACKUP input powers RTC and 32-kHz oscillator during main supply loss - maintains timekeeping and alarm/wake-up functionality from coin cell or supercap. |
| Low-power operating modes | 2 μA shutdown, 7 μA backup-only, 20 μA low-power standby - extends battery life in always-on automotive systems like telematics and remote keyless entry. |
| Configurable NVM power sequencing | Pre-programmed startup/shutdown sequences stored in CRC-protected NVM - eliminates need for external firmware initialization and ensures deterministic power-up behavior. |
Applications
| Automotive Digital Cluster | ADAS Domain Controller |
|---|---|
|
Use Scenario: Powering high-resolution TFT display, GPU, and video processor in instrument clusters with strict ASIL-B requirements. IC Role / Device Role / Timing Role: Central PMIC managing core SoC rails (1.2 V, 1.8 V), memory (3.3 V), display interface (1.2 V low-noise), and RTC (32 kHz). Use Value: Integrated multi-phase bucks reduce board area vs. discrete solutions; ASIL-B hardware integrity simplifies FMEDA analysis for cluster safety case. |
Use Scenario: Supplying radar SoC, camera ISP, and AI accelerator in front-facing ADAS ECU with thermal constraints. IC Role / Device Role / Timing Role: Primary power controller delivering 1.0 V @ 12 A (via BUCK1234 multi-phase), 1.8 V @ 3.5 A, and low-noise 1.2 V @ 300 mA for sensor interface. Use Value: Thermal pre-warning and shutdown prevent thermal runaway in sealed enclosures; watchdog Q&A mode validates software execution in real time. |
| Infotainment Head Unit | Body Control Module (BCM) |
|
Use Scenario: Managing power for multimedia SoC, audio codec, USB-C PD, and touch controller in center-stack head units. IC Role / Device Role / Timing Role: System PMIC providing sequenced 1.1 V, 1.8 V, 3.3 V, and 5 V (via external boost) with GPIO-controlled enable timing. Use Value: Configurable NVM sequences eliminate boot dependency on host processor; 32-kHz RTC enables accurate media timestamping and sleep/wake scheduling. |
Use Scenario: Powering microcontroller, LIN transceivers, LED drivers, and CAN interface in distributed BCM nodes. IC Role / Device Role / Timing Role: Compact power hub supplying 3.3 V MCU core, 5 V transceiver, 12 V LED bias, and 1.2 V sensor reference from single 12 V input. Use Value: Low 2 μA shutdown current minimizes parasitic drain on vehicle battery; ESM inputs monitor MCU health and trigger safe state transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65941211RWERQ1 | Same 5-buck/4-LDO architecture but adds SPMI interface and enhanced GPIO flexibility; identical VQFNP-56 package and pinout. | Targeted at next-gen ADAS platforms requiring multi-PMIC coordination via SPMI bus. | Select when SPMI-based system-level power orchestration is required; otherwise, TPS65931211RWERQ1 offers lower cost and proven qualification for current-generation designs. |
| MAX20429ATPA/VY+ | 4-buck/3-LDO architecture; supports ASIL-B but lacks integrated RTC, 32-kHz oscillator, and NVM-based sequencing. | Used in cost-sensitive infotainment gateways where external RTC and sequencing logic are acceptable. | Choose for simpler, lower-pin-count implementations where full safety subsystem integration is not mandated; TPS65931211RWERQ1 provides higher integration and reduced BOM count. |
Compared with TPS65931211RWERQ1, TPS65941211RWERQ1 adds SPMI for scalable multi-PMIC systems but increases firmware complexity, while MAX20429ATPA/VY+ reduces integration depth and requires external timing/sequencing components - making TPS65931211RWERQ1 optimal for standalone ASIL-B-compliant ADAS and cluster applications needing full-featured, self-contained power management.
Availability
TPS65931211RWERQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and digital cluster applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 1 qualification.
Supply support for TPS65931211RWERQ1 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 power management technologies, with deep expertise in automotive-grade reliability and functional safety design.
The TPS6593-Q1 product line was developed specifically for safety-relevant automotive applications, integrating comprehensive monitoring, ASIL-B hardware integrity, and NVM-configurable sequencing to accelerate ISO 26262-compliant system development.
FAQ
What is the maximum total output current capability of the TPS65931211RWERQ1's buck regulators?
The TPS65931211RWERQ1 supports up to 14 A total output current by configuring BUCK1–BUCK4 in multi-phase mode (e.g., BUCK1234). BUCK4 delivers 4 A in single-phase or 3.5 A in multi-phase; BUCK1–BUCK3 each provide 3.5 A; BUCK5 supplies 2 A independently. This enables high-current SoC core rail delivery without external current-sharing circuitry.
Does the TPS65931211RWERQ1 include an integrated real-time clock (RTC)?
Yes, the TPS65931211RWERQ1 integrates a real-time clock with calendar, alarm, and periodic wake-up functionality. It uses an internal 32-kHz crystal oscillator (with OSC32KIN/OSC32KOUT/OSC32KCAP pins) and supports backup power via VBACKUP to maintain timekeeping during main supply loss - critical for automotive telematics and infotainment logging.
How does the TPS65931211RWERQ1 support functional safety compliance in automotive systems?
The TPS65931211RWERQ1 supports ISO 26262 system-level development with ASIL-B hardware integrity, including input supply monitoring, per-rail UV/OV/OC detection, thermal pre-warning (+115°C) and shutdown (+150°C), dual error signal monitors (ESMs), Q&A watchdog, and CRC-protected NVM. Documentation for safety analysis is provided upon product release.
What communication interfaces does the TPS65931211RWERQ1 support for configuration and monitoring?
The TPS65931211RWERQ1 supports either SPI or dual I²C interfaces: one primary I²C/SPI for general configuration and a second dedicated I²C (I²C2) for Q&A watchdog communication. Interface selection is stored in NVM, and GPIO1/GPIO2 serve as SCL_I2C2/SDA_I2C2 pins - enabling isolated watchdog supervision independent of main control traffic.
Is the TPS65931211RWERQ1 pin-compatible with other devices in the TPS659x-Q1 family?
The TPS65931211RWERQ1 shares the same 56-pin VQFNP (RWE) package and mechanical footprint with TPS65941211RWERQ1, enabling drop-in replacement where SPMI interface is not required. However, register maps and certain GPIO alternate functions differ; full electrical and firmware compatibility requires validation against respective datasheets.
TPS65931211RWERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- 19mA
- Voltage - Supply:
- 2.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 56-VQFNP (8x8)
TPS65931211RWERQ1 FAQ
1.How can I place an order for TPS65931211RWERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65931211RWERQ1 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 TPS65931211RWERQ1 reliable?
The price and inventory of TPS65931211RWERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65931211RWERQ1 is usually 5 days.
3.What payment methods are accepted for TPS65931211RWERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65931211RWERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65931211RWERQ1?
TPS65931211RWERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65931211RWERQ1 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 TPS65931211RWERQ1?
For technical support, including TPS65931211RWERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65931211RWERQ1 requirements.
6.How does Aetrix verify that TPS65931211RWERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65931211RWERQ1 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 TPS65931211RWERQ1 meets industry standards.
7.What is the process for return or replacement of TPS65931211RWERQ1?
All TPS65931211RWERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65931211RWERQ1, 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 TPS65931211RWERQ1 part is unused and in its original packaging.
Return procedure for TPS65931211RWERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65931211RWERQ1 Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
