STMicroelectronics EVAL-L99DZ120

Overview

EVAL-L99DZ120 from STMicroelectronics is a motherboard-and-daughterboard evaluation platform for the L99DZ120 automotive door zone IC, designed specifically for rear door control applications. It integrates an STM8 microcontroller-based logic section, dual half-bridge drivers (7.5 A @ 100 mΩ and 7.5 A @ 150 mΩ), four 3 A half-bridges, five configurable high-side drivers, LIN 2.2a and advanced high-speed CAN transceivers, dual 5 V regulators, and programmable soft-start with thermal expiration.

For engineers reviewing the EVAL-L99DZ120 datasheet, EVAL-L99DZ120 pinout, EVAL-L99DZ120 application, or EVAL-L99DZ120 equivalent, this board enables rapid validation of rear-door ECU functions including window lift, mirror fold, lock actuation, and electro-chromic glass control - with real-time GUI-monitored diagnostics for current, voltage, and temperature.

Technical Context

The EVAL-L99DZ120 implements a modular architecture: the motherboard hosts the STM8 MCU, LIN/CAN physical layers, power regulation, and USB interface, while the daughterboard mounts the L99DZ120 IC with its full complement of output drivers and protection circuitry. All high-side drivers feature internal 10-bit PWM timers and configurable R_ON/current ratings.

It supports ISO 11898-2/-5/-6 compliant CAN with selective wake-up and bus failure diagnosis, SAE J2602-compliant LIN, and includes isolated fail-safe logic with 1 mΩ low-side pull-downs for external HS MOSFET gate control - critical for ASIL-B–aligned door zone safety monitoring.

Key Specifications

Availability

EVAL-L99DZ120 is available at Aetrix Electronics and suitable for automotive rear door module development, body control unit (BCU) prototyping, and OEM door zone ECU qualification requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for EVAL-L99DZ120 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer markets.

The L99DZ series targets automotive door zone control, integrating high-current drivers, communication interfaces, and safety-critical diagnostics into a single AEC-Q100 qualified system-in-package for rear and front door ECUs.

FAQ

What is the primary application focus of the EVAL-L99DZ120?

The EVAL-L99DZ120 is purpose-built for evaluating rear door zone functions in automotive body electronics, including window lift motors, power mirror folding, door lock actuators, and interior lighting control - leveraging the L99DZ120's specific driver configuration optimized for lower-load rear-door loads versus front-door variants.

Does the EVAL-L99DZ120 include CAN and LIN physical layer support?

Yes - it integrates a fully compliant high-speed CAN transceiver meeting ISO 11898-2/-5/-6 and SAE J2284, plus a LIN 2.2a transceiver compliant with SAE J2602, both with diagnostic capabilities including local/bus failure detection and ISO 11898-6 selective wake-up functionality.

How does the motherboard-daughterboard architecture benefit development?

This architecture decouples MCU firmware and interface logic (on motherboard) from the power driver IC (on daughterboard), enabling reuse of the same motherboard across L99DZ100G (front door) and L99DZ120 (rear door) evaluations - reducing validation time and simplifying comparative testing of door-zone IC variants.

Is demonstration software provided with the EVAL-L99DZ120?

Yes - ST provides a Windows-based GUI software (XP/7/8 compatible) delivered on request via USB Type-B connection, enabling real-time parameter configuration, current/voltage/temperature monitoring, and diagnostic readout for all L99DZ120 outputs and internal sensors.