Overview
The TPS65941212RWERQ1 is a power management integrated circuit (PMIC) designed by Texas Instruments, specifically tailored for automotive applications. This device is part of the TPS6594-Q1 family and is AEC-Q100 qualified, ensuring it meets stringent automotive standards. The PMIC is designed to power processors such as the Jacinto™ 7 DRA829V or TDA4VM, providing a comprehensive power distribution network (PDN) with advanced features for functional safety and low power modes.
Key Specifications
| Specification | Description |
|---|---|
| Input Voltage Range | 3 V to 5.5 V |
| Output Currents | Up to 9 A on Primary PMIC 3-phase CPU rail, up to 12 A on Secondary PMIC 4-phase CORE rail, up to 3.4 A on SDRAM |
| Processor Support | Supports processors up to 2 GHz maximum clock with high-speed SERDES operations |
| Memory Support | Supports 32 Gb of LPDDR4 SDRAM with 4266MTs data rate |
| Functional Safety | Supports functional safety up to ASIL-D level with MCU Safety Island |
| Low Power Modes | Supports MCU-only and DDR_Retention low power modes |
| I/O Voltage Levels | Supports I/O levels of 3.3 V or 1.8 V |
| Additional Features | Compliant high-speed SD Card memory, USB 2.0 Interface, on-board Efuse programming of high security processors |
Key Features
- Independent power control of MCU and Main rails
- Independent monitoring and reset for MCU and Main rails
- Input supply monitoring and output voltage and current monitoring
- Internal diagnostics including voltage monitoring, temperature monitoring, and Built-In Self-Test (BIST)
- Q&A Watchdog and fault reporting interrupts
- Enable drive pin for independent path to disable system actuators
- Support for dual-voltage SD card operation (3.3 V and 1.8 V)
- Support for USB 2.0 interface and on-board Efuse programming
Applications
The TPS65941212RWERQ1 PMIC is primarily designed for automotive applications, particularly for powering advanced automotive processors like the Jacinto™ 7 DRA829V or TDA4VM. It is suitable for systems requiring high functional safety levels, such as those needing up to ASIL-D compliance. Other potential applications include:
- Advanced driver-assistance systems (ADAS)
- Automotive infotainment systems
- Automotive control units requiring high reliability and safety
Q & A
- What is the input voltage range of the TPS65941212RWERQ1 PMIC?
The input voltage range is from 3 V to 5.5 V.
- What are the maximum output currents supported by the PMIC?
The PMIC supports up to 9 A on the Primary PMIC 3-phase CPU rail, up to 12 A on the Secondary PMIC 4-phase CORE rail, and up to 3.4 A on SDRAM.
- What type of memory does the PMIC support?
The PMIC supports 32 Gb of LPDDR4 SDRAM with a 4266MTs data rate.
- What functional safety levels does the PMIC support?
The PMIC supports functional safety up to ASIL-D level with MCU Safety Island.
- What low power modes are supported by the PMIC?
The PMIC supports MCU-only and DDR_Retention low power modes.
- What I/O voltage levels are supported by the PMIC?
The PMIC supports I/O levels of 3.3 V or 1.8 V.
- Does the PMIC support high-speed SD card operation?
Yes, the PMIC supports compliant high-speed SD card memory with dual-voltage I/O (3.3 V and 1.8 V).
- How does the PMIC ensure functional safety in automotive applications?
The PMIC ensures functional safety through features like independent power control, input supply monitoring, output voltage and current monitoring, and internal diagnostics including BIST).
- Can the PMIC be used in non-automotive applications?
While the PMIC is primarily designed for automotive applications, its robust features could make it suitable for other high-reliability and safety-critical applications, but it would need to be evaluated against the specific requirements of those applications.
- How is the PMIC configured for low power modes?
The PMIC is configured for low power modes through specific GPIO pins and I2C settings, allowing for MCU-only and DDR_Retention modes).
