STMicroelectronics EVAL-L9177A

Overview

EVAL-L9177A from STMicroelectronics is an evaluation board designed to validate the L9177A smart power IC-a BCD-technology device for one/two-cylinder powertrain systems. It supports 2 injector drivers, 1 lambda heater, 3 relay drivers, 1 LED/lamp driver, tachometer and stepper motor drivers, and 1 protected high-side driver, operating from 3.9 V to 30 V with SPI and K-Line communication.

For engineers reviewing the EVAL-L9177A datasheet, EVAL-L9177A pinout, EVAL-L9177A application, or EVAL-L9177A equivalent, this board enables rapid validation of L9177A's load-driving capabilities, diagnostic register access, short-circuit/over-temperature protection behavior, and integration with SPC563M-DISP or generic MCU boards via adapter.

Technical Context

The EVAL-L9177A provides full hardware access to all L9177A I/O-including SPI, K-Line, injector control, ignition signals, GPIO status monitoring, and PWM-controlled stepper motor outputs-via test points and standardized connectors. It accepts 4–24 V input (up to 10 A) and interfaces directly with the SPC563M-DISP Discovery+ board using a compatible input signal connector.

Board-level resources include dedicated circuitry for variable reluctance and Hall sensor interfacing, real-time diagnostic feedback through SPI-accessible registers, and protection monitoring for all eight output channels-enabling comprehensive functional safety assessment in engine control unit prototyping.

Key Specifications

Availability

EVAL-L9177A is available at Aetrix Electronics and suitable for engine control unit development, powertrain ECU prototyping, and automotive diagnostic subsystem validation requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-L9177A 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and embedded power solutions with broad IP and process technology expertise.

The EVAL-L9177A belongs to ST's automotive evaluation board portfolio, developed specifically to accelerate adoption of the L9177A smart power IC in small-engine electronic control applications such as motorcycles, scooters, generators, and agricultural machinery.

FAQ

Does EVAL-L9177A require external firmware or software to operate?

No. The board itself is hardware-only and does not execute firmware. However, demonstration software is available from ST for LabVIEW and UDE Visual Platform to configure registers, trigger diagnostics, and visualize channel states via SPI/K-Line. Host MCU code must be provided separately for custom use cases.

Can EVAL-L9177A be used without the SPC563M-DISP board?

Yes. The board supports connection to any generic microcontroller board via a simple adapter, provided it supplies SPI, K-Line serial interface, 10 GPIOs for injector/ignition/status signals, 1 PWM for stepper control, and 3.3 V or 5 V Vcc. Pinout compatibility is documented in ST's DB3309 data brief.

What protection features are validated on EVAL-L9177A?

All eight output channels are validated for short-circuit-to-ground, short-circuit-to-supply, and overtemperature protection. Diagnostic registers accessible via SPI report fault status per channel, enabling verification of automatic shutdown, recovery timing, and thermal foldback behavior under controlled lab conditions.

Is the EVAL-L9177A RoHS-compliant and qualified for automotive use?

Yes. As an STMicroelectronics evaluation board, EVAL-L9177A complies with RoHS Directive 2011/65/EU and is built using components qualified to AEC-Q200 standards where applicable. Its design follows automotive-grade layout practices, including reinforced isolation and transient protection aligned with ISO 7637-2 test requirements.