STMicroelectronics STEVAL-L9026 Evaluation Board
STMicroelectronics STEVAL-L9026 Evaluation Board is designed to evaluate the L9026 smart power device created with advanced BCD technology. The L9026 is an 8-channel IC with two fixed HS drivers and six configurable HS/LS drivers designed for automotive applications (LEDs and relays) and compatible with resistive, inductive, and capacitive loads. The IC offers advanced diagnostic and protection functionalities such as short-to-GND, open load, overcurrent, and overtemperature detection. Thanks to a programmable internal multiplexer, the eight output channels can be driven by SPI or by two dedicated parallel inputs associated with different outputs. Limp home functionality is also featured, allowing two selected drivers in specific fault conditions, such as SPI fault, microcontroller fault, or supply UV. Daisy chain compatibility with 8-bit SPI is also available. The device ensures operation in cranking scenarios down to VBATT = 3V and very low quiescent current in the SLEEP condition.
A serial peripheral interface (SPI) is used for the control/configuration of the loads and the device. Status feedback of all diagnostic functions is also provided. Thanks to the expansion connectors, the STMicroelectronics STEVAL-L9026 allows the complete control of the L9026 communication interface (SPI) and parallel input/output. The evaluation platform may be completed with an MCU board (AEK-MCU-C1MLIT1), which can be plugged into the STEVAL-L9026 and configured using the dedicated graphical user interface (GUI).
Features
- Operating input voltage ranges
- 3V to 28V for VBATT pin
- 3V to 5V for VDDIO pin
- Six configurable LS/HS drivers up to 0.5A
- Two high-side drivers up to 0.5A
- Idle mode for reduced current consumption
- Possible daisy chain configuration
- Two parallel input pins with input mapping functionality
- SPI communication interface for control and diagnostics
- Reference design with optimized bill of materials (BOM)
- IN0/IN1, IDLE, NRES, and DIS configurable inputs (using jumpers)
- Configurable Dip switch for all the L9026 available configurations
- L9026 hosted in a QFN32 package
- 4-layer PCB (70mm x 59.8mm)
Applications
- Automotive
- Body Control Modules (BCMs)
- HVAC and climate control
- Gasoline multi-point injection
- Diesel direct injection
- Advanced diagnostics and protection
- SPI communication interfaces
- Limp home functionality
Required Equipment
- 3V to 28V power supply with current capability up to 8A
- Loads for LED, relay, and solenoid lamp with a 12V/0.5A rating
- Oscilloscope and/or multimeter
