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Texas Instruments TPS65941319RWERQ1
- Part No.:
- TPS65941319RWERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
TPS65941319RWERQ1.pdf
- Description:
- AUTOMOTIVE 2.8-V TO 5.5-V, 5 BUC
- Quantity:
- Payment:
- Shipping:
Inventory:1,891
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Product details
Overview
TPS65941319RWERQ1 from Texas Instruments is an automotive-grade power management IC (PMIC) integrating five buck regulators (one 4-A, three 3.5-A, one 2-A), four LDOs (three 500-mA bypass-capable, one 300-mA low-noise), configurable NVM-based power sequencing, RTC with 32-kHz crystal oscillator, and functional safety features up to ASIL-D for ADAS and digital cluster applications.
For engineers reviewing the TPS65941319RWERQ1 datasheet, TPS65941319RWERQ1 pinout, TPS65941319RWERQ1 application, or TPS65941319RWERQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (–40°C to +125°C), dual I²C/SPI control interfaces, integrated watchdog with Q&A mode, real-time clock with backup supply management, and 56-pin VQFNP package with thermal pad.
Technical Context
The TPS65941319RWERQ1 implements a safety-critical power architecture with hardware integrity up to ASIL-D, including CRC-protected NVM configuration, register-level bit-integrity checking, and redundant voltage/current/thermal monitoring across all five BUCKs and four LDOs. It supports flexible multi-phase operation (up to 14 A from four BUCKs) and synchronized switching at 2.2 MHz or 4.4 MHz with spread-spectrum modulation.
Control is enabled via SPI or dual I²C interfaces - one dedicated to Q&A watchdog communication - while power sequencing is fully programmable in non-volatile memory with digital input-triggered state transitions and error-handling policies. The device integrates a 32-kHz crystal oscillator, RTC with alarm/wake-up, and backup battery management for continuous timekeeping during main supply loss.
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 integrated UVLO and OVP. |
| Operating Temperature | –40°C to +125°C ambient - AEC-Q100 Grade 1 qualified for under-hood and cockpit electronics. |
| Buck Regulator Count | 5 - includes one 4-A, three 3.5-A, and one 2-A regulator with independent feedback and current limiting. |
| LDO Regulator Count | 4 - three 500-mA bypass-capable LDOs and one 300-mA low-noise LDO for noise-sensitive analog/RTC circuits. |
| Switching Frequency | 2.2 MHz / 4.4 MHz - enables compact external filter design and EMI reduction via spread-spectrum modulation. |
| Functional Safety | ASIL-D capable - includes dual ESM inputs, watchdog with Q&A mode, thermal warning/shutdown, and CRC-protected registers/NVM. |
| Package | VQFNP-56 (8 mm × 8 mm, 0.5-mm pitch) - thermally enhanced quad-flat no-lead with exposed thermal pad for high-power dissipation. |
Pinout & Package
TPS65941319RWERQ1 uses an 8-mm × 8-mm, 56-pin VQFNP (RWE) package with 0.5-mm pitch and integrated thermal pad for efficient heat dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_B1–FB_B5 | Buck feedback inputs | Individual voltage-sense inputs per buck regulator; support differential sensing in multi-phase configurations. |
| PVIN_B1–PVIN_B5 | Buck input power rails | Independent input pins for each buck; internally tied to VCCA when unused, enabling shared input sourcing. |
| SW_B1–SW_B5 | Buck switch nodes | High-side FET output terminals; dual pins per buck (SW_B1/SW_B1, SW_B2/SW_B2, etc.) for current sharing and layout symmetry. |
| VOUT_LDO1–VOUT_LDO4 | LDO output terminals | Four regulated outputs: LDO1/LDO2/LDO3 (500 mA, bypass-configurable), LDO4 (300 mA, low-noise). |
| OSC32KIN/OSC32KOUT/OSC32KCAP | 32-kHz crystal interface | Supports external 32.768-kHz crystal with internal 100-Ω series resistor and buffered clock output (CLK32KOUT on GPIO3/GPIO4/GPIO8). |
| nINT / nRSTOUT / PGOOD (GPIO9) | System control signals | Interrupt assertion, SoC reset output, and power-good status indication - configurable as GPIO or dedicated function. |
Key Features
| Feature | Design Value |
|---|---|
| ASIL-D Hardware Integrity | Includes CRC on NVM and registers, dual ESM inputs, thermal pre-warning, and hardware-enforced safe-state entry via EN_DRV. |
| Configurable Power Sequencing | NVM-stored power-up/down sequences with digital input triggers and output signal inclusion for external regulator enable control. |
| Multi-Phase Buck Capability | Four BUCKs support phase interleaving up to 14-A total output; reduces input/output ripple and improves transient response. |
| Backup Supply Management | Dedicated VBACKUP input and LDOVRTC/LDOVINT internal regulators maintain RTC and crystal oscillator during main supply loss. |
| Q&A Watchdog Interface | Dedicated I²C2 interface enables secure challenge-response watchdog communication, preventing software lockup without false triggers. |
Applications
| Automotive Digital Cluster | ADAS Domain Controller |
|---|---|
Use Scenario: Centralized power delivery for high-resolution TFT display, graphics processor, and touch controller in instrument clusters. IC Role / Device Role / Timing Role: Primary PMIC managing sequenced power rails, real-time clock synchronization, and fault-aware system reset coordination. Use Value: Enables single-chip power orchestration with ASIL-D-compliant monitoring, reducing BOM count and eliminating discrete sequencing logic. | Use Scenario: Powering radar SoC, vision processor, and CAN/FlexRay communication interfaces in autonomous driving systems. IC Role / Device Role / Timing Role: Safety-critical power supervisor with watchdog handshake, voltage/current/thermal fault detection, and deterministic power-state transitions. Use Value: Meets ISO 26262 requirements through hardware CRC, dual ESM inputs, and fail-safe nRSTOUT signaling during detected anomalies. |
| Infotainment Head Unit | Automotive Telematics Control Unit |
Use Scenario: Supplying CPU, GPU, audio codec, and USB/PCIe peripherals in connected infotainment platforms. IC Role / Device Role / Timing Role: Multi-rail PMIC with programmable sequencing, RTC-backed wake-up timers, and low-noise LDO4 for audio subsystems. Use Value: Reduces standby current to 7 μA (backup-only mode) and supports fast wake-from-sleep using CLK32KOUT-synchronized events. | Use Scenario: Powering cellular modem, GNSS receiver, and vehicle-to-cloud communication modules in telematics gateways. IC Role / Device Role / Timing Role: Dual-interface (SPI/I²C) PMIC with backup-battery RTC, GPS timing reference via 32-kHz output, and robust overvoltage/undervoltage protection. Use Value: Ensures continuous timekeeping and secure modem boot sequencing even during battery disconnect or brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65941219RWERQ1 | Same die, different NVM configuration: excludes RTC and 32-kHz oscillator; no backup battery management. | Suitable for non-time-critical ADAS sensors or ECUs where RTC functionality is unnecessary. | Select when RTC, CLK32KOUT, and VBACKUP features are not required - lower cost and identical power architecture. |
| MAX20429BATGA/V+ | 4-buck + 3-LDO PMIC; ASIL-B rated; no Q&A watchdog; SPI-only interface; 40-pin TQFN. | Targeted at mid-tier ADAS cameras or body control modules with less stringent safety requirements. | Choose for cost-sensitive ASIL-B designs requiring smaller footprint and simpler interface, but lacking ASIL-D diagnostics and RTC. |
Compared with TPS65941319RWERQ1, the TPS65941219RWERQ1 removes RTC functionality while retaining identical power regulation and safety architecture, whereas the MAX20429BATGA/V+ offers reduced channel count, lower safety grade, and no crystal oscillator - making it suitable only for non-time-critical, ASIL-B automotive subsystems.
Availability
TPS65941319RWERQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and digital cluster systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for TPS65941319RWERQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management solutions.
The TPS6594-Q1 product line delivers functional safety-certified PMICs for next-generation automotive electronics, designed specifically to meet ISO 26262 ASIL-D requirements in ADAS, digital cockpit, and centralized E/E architectures.
FAQ
What automotive safety standards does the TPS65941319RWERQ1 comply with?
The TPS65941319RWERQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and developed for functional safety applications up to ASIL-D per ISO 26262. It provides documentation for system-level design, achieves hardware integrity up to ASIL-D, and includes built-in diagnostics such as CRC-protected NVM, dual ESM inputs, Q&A watchdog, and comprehensive voltage/current/thermal monitoring. These features are integral to the TPS65941319RWERQ1 silicon and validated in production.
Does the TPS65941319RWERQ1 support external clock synchronization for its buck regulators?
Yes, the TPS65941319RWERQ1 supports external clock synchronization via the SYNCCLKIN pin, accepting 1-MHz, 2-MHz, or 4-MHz input clocks. It also provides a buffered SYNCCLKOUT signal (on GPIO8 or GPIO9) to synchronize external devices. Internal switching frequencies are fixed at 2.2 MHz or 4.4 MHz, and spread-spectrum modulation can be applied to reduce EMI - all configurable in the TPS65941319RWERQ1 register map.
How many I²C interfaces does the TPS65941319RWERQ1 have, and what are their roles?
The TPS65941319RWERQ1 includes two I²C interfaces: I²C1 (SCL_I2C1/SDA_I2C1) for general configuration and monitoring, and I²C2 (SCL_I2C2/SDA_I2C2 on GPIO1/GPIO2) dedicated exclusively to Q&A watchdog communication. This separation ensures watchdog traffic remains isolated from main control traffic, enhancing reliability and security in safety-critical applications like those using the TPS65941319RWERQ1.
Can the TPS65941319RWERQ1 operate without an external 32-kHz crystal?
No - the TPS65941319RWERQ1 requires an external 32.768-kHz crystal connected to OSC32KIN/OSC32KOUT with OSC32KCAP for RTC functionality. While it includes a 128-kHz RC oscillator for basic timing, the RTC, alarm, and periodic wake-up features depend on the crystal-based 32-kHz clock. Omitting the crystal disables RTC operation and prevents CLK32KOUT generation - critical functions of the TPS65941319RWERQ1 in automotive timekeeping applications.
What is the purpose of the EN_DRV pin on the TPS65941319RWERQ1?
The EN_DRV pin on the TPS65941319RWERQ1 is an open-drain output that signals safe-state entry: it pulls low when the ENABLE_DRV bit is cleared, indicating the device has transitioned into a defined safe condition due to fault detection (e.g., thermal shutdown, voltage violation, or watchdog timeout). This pin allows external circuitry to latch or respond to the TPS65941319RWERQ1's safety state independently of nRSTOUT or interrupt signals.
TPS65941319RWERQ1 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:
- 3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 56-VQFNP (8x8)
TPS65941319RWERQ1 FAQ
1.How can I place an order for TPS65941319RWERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65941319RWERQ1 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 TPS65941319RWERQ1 reliable?
The price and inventory of TPS65941319RWERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65941319RWERQ1 is usually 5 days.
3.What payment methods are accepted for TPS65941319RWERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65941319RWERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65941319RWERQ1?
TPS65941319RWERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65941319RWERQ1 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 TPS65941319RWERQ1?
For technical support, including TPS65941319RWERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65941319RWERQ1 requirements.
6.How does Aetrix verify that TPS65941319RWERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65941319RWERQ1 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 TPS65941319RWERQ1 meets industry standards.
7.What is the process for return or replacement of TPS65941319RWERQ1?
All TPS65941319RWERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65941319RWERQ1, 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 TPS65941319RWERQ1 part is unused and in its original packaging.
Return procedure for TPS65941319RWERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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