STMicroelectronics SPSB100 Automotive Power Management IC (PMIC)
STMicroelectronics SPSB100 Automotive Power Management IC (PMIC) is a fully integrated automotive power management system IC specially designed for highly integrated application processors (for example, Stellar G and P MCU families). It offers low power mode, high current capability, and enhanced system power supply functionality. It combines a 3-switch mode power supply with two integrated linear voltage regulators. The device integrates two more wake-up inputs and advanced fail-safe functionalities.
The boost controller is intended only to sustain cold cranking pulses, start-stop, and weak battery conditions for a transitory time. Different combinations enable the supply of the system microcontroller, external peripheral loads, and sensors in several adjustable voltage and current ranges. SPSB100 is delivered from the ST factory with default values (rails, power-up, and down sequences) stored in USER-NVM space as reported in system supply configuration 1 for SPSB100B and system supply configuration 2 for SPSB100P. Still, customers can also reprogram it based on different application needs.
The STMicroelectronics standard SPI interface allows device control and diagnosis and enables generic software development. The device offers features to support applications that need to fulfill functional safety requirements as defined by the Automotive Safety Integrity Level (ASIL).
Features
- AEC-Q100 qualified
- Two configurable (6.5V, 5V, 3.3V) BUCK converters and typ peak switching current limit of 3.0A at 2.4MHz or 400kHz
- One configurable (3.3V, 1.25V, 1.2V, 1.1V, 0.98V) BUCK converter and typ peak switching current limit up to 6.0A at 2.4MHz, with fine-tuning configurability around 0.98V (0.95V to 1.01V)
- Overcurrent detection and limitation for all BUCKs
- Integrated soft start on BUCK stages
- Boost controller 8V to 9.5V and typical peak switching current limit of 4.2A at 400kHz for sustaining low battery conditions occurring for a transitory time and deep cranking pulse (external power components can be optionally populated)
- One 5V voltage regulator (120mA, 2% acc.)
- One configurable (5V or 3.3V) low drop voltage tracker of all regulators (10mA, ±10mV)
- One high-side driver for contact monitoring (RON = 55Ω) with open-load and overcurrent diagnosis
- Dedicated interrupt pin for failure communication
- The device operates in low-power mode
- Very low quiescent current in DEEP-SLEEP state
- MCU reset generator
- Configurable window watchdog with extended long open window up to 9s and enable/disable function through NVM bit
- The device contains temperature warning and protection
- Thermal clusters
- A/D conversion of supply voltages and internal temperature sensors
- STMicroelectronics standard serial peripheral interface (32 Bit/ST_SPI) including 4-bit CRC
- One fail-safe output
- One input pin supporting static and dynamic error signal reporting
- Programmable periodic system wake-up feature
- Documentation available for customers that need support when dealing with ASIL requirements as per ISO26262
- VFQFN56+4L 8mm x 8mm x 0.9mm with wettable flank, 0.8mm package
Associated Boards
STMicroelectronics AEK-POW-BMSLV Battery Management System Board
Board utilizes automotive-grade components to connect to a pack & monitor each battery's SOC & SOH.
STMicroelectronics STEVAL-TTM007A Control Board
Designed for high-voltage motor control applications, like traction inverters and ASIL D systems.
Block Diagram
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STMicroelectronics Standard Products
A broad range of drop-in replacements for general-purpose analog ICs, discretes, and serial EEPROMs.