Texas Instruments TPS65941421RWERQ1

Overview

TPS65941421RWERQ1 from Texas Instruments is an automotive-grade power management IC (PMIC) integrating five buck regulators (four 3.5 A multi-phase configurable, one 2 A), four LDOs (three 500 mA bypass-capable, one 300 mA low-noise), RTC with 32-kHz crystal oscillator, dual I²C/SPI control interfaces, and functional safety features up to ASIL-D for safety-critical vehicle systems.

For engineers reviewing the TPS65941421RWERQ1 datasheet, TPS65941421RWERQ1 pinout, TPS65941421RWERQ1 application, or TPS65941421RWERQ1 equivalent, key selection considerations include its 56-pin VQFNP package, 3–5.5 V input range, –40°C to +125°C operation, integrated watchdog with Q&A mode, and NVM-configurable power sequencing for ADAS and infotainment SoCs.

Technical Context

The TPS65941421RWERQ1 implements a safety-architected system-on-chip PMIC with hardware integrity up to ASIL-D, including CRC protection on configuration registers and NVM, dual error signal monitors (ESMs), thermal pre-warning and shutdown, and independent voltage/current monitoring on all five BUCK and four LDO outputs.

It supports flexible multi-phase operation across four BUCKs (up to 14 A aggregate), programmable 2.2/4.4 MHz switching frequency with spread-spectrum modulation, synchronized external clock input, and dual control interfaces - one dedicated I²C for Q&A watchdog communication and a shared SPI/I²C interface for full register access and power-state orchestration.

Key Specifications

Pinout & Package

TPS65941421RWERQ1 uses an 8 mm × 8 mm, 56-pin VQFNP (RWE) package with 0.5-mm pitch and exposed thermal pad. Pin functions include dedicated BUCK feedback (FB_B1–FB_B5), switch nodes (SW_B1–SW_B5), LDO inputs/outputs, dual I²C/SPI signals, GPIOs with multiple alternate functions (e.g., nERR_MCU, CLK32KOUT, SYNCCLKOUT), and safety-critical signals (nINT, EN_DRV, PGOOD).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PMIC applications.

Compared with TPS659421RWERQ1, the TPS65941421RWERQ1 offers identical silicon-level safety and regulation capability but distinct factory-programmed NVM defaults; versus MAX20029ATG/V+T, it delivers higher functional safety assurance, integrated timing, and autonomous sequencing - essential for ADAS and cluster use cases.

Availability

TPS65941421RWERQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS sensor fusion, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for TPS65941421RWERQ1 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 decades of automotive qualification expertise and broad AEC-Q100 portfolio coverage.

The TPS6594-Q1 product line is designed specifically for safety-critical automotive domain controllers and SoC power delivery, integrating functional safety mechanisms, multi-rail flexibility, and robust diagnostics to meet ASIL-D system requirements.

FAQ

What is the primary safety certification level of the TPS65941421RWERQ1?

The TPS65941421RWERQ1 is AEC-Q100 Grade 1 qualified and developed for functional safety applications with hardware integrity and systematic capability up to ASIL-D per ISO 26262. Documentation supporting ASIL-D system integration-including FMEDA reports and safety manuals-is available from Texas Instruments for the TPS65941421RWERQ1.

Does the TPS65941421RWERQ1 support external clock synchronization for its BUCK regulators?

Yes, the TPS65941421RWERQ1 supports external clock synchronization via the SYNCCLKIN pin, accepting 1-MHz, 2-MHz, or 4-MHz input signals. It also generates a synchronized clock output on SYNCCLKOUT (GPIO8 or GPIO9) for coordinating timing with other system components - a key capability confirmed in the TPS65941421RWERQ1 datasheet Section 7.11.

How many LDOs does the TPS65941421RWERQ1 integrate, and what are their key distinctions?

The TPS65941421RWERQ1 integrates four LDOs: three general-purpose 500 mA LDOs (LDO1–LDO3) configurable in linear regulation or bypass mode, and one 300 mA low-noise LDO (LDO4) optimized for RTC and analog circuits with <10 µV_RMS output noise - all verified in TPS65941421RWERQ1 electrical specifications Tables 7.5–7.7.

Can the TPS65941421RWERQ1 operate without external programming after power-up?

Yes, the TPS65941421RWERQ1 contains pre-programmed non-volatile memory (NVM) that stores default power sequences, output voltages, and GPIO configurations, enabling autonomous start-up without host intervention. This NVM includes CRC error detection to halt boot on corruption - a verified behavior documented for the TPS65941421RWERQ1 in Section 5 and Figure 8-1.

What package type and pin count does the TPS65941421RWERQ1 use?

The TPS65941421RWERQ1 uses an 8 mm × 8 mm, 56-pin VQFNP (RWE) package with 0.5-mm pitch and exposed thermal pad, as specified in the device information table and pin configuration diagram of the official TPS65941421RWERQ1 datasheet (SLVSEA7B, Rev. FEBRUARY 2022).