STMicroelectronics EVAL-D-L99DZ120

Overview

EVAL-D-L99DZ120 from STMicroelectronics is a daughterboard evaluation platform for the L99DZ120 automotive door zone IC, designed specifically for rear door control applications. It integrates configurable high-side drivers, dual half-bridge outputs (7.5 A and 3 A), LIN 2.2a and advanced CAN transceivers, dual 5 V regulators, and programmable soft-start with thermal protection - enabling rapid validation of power distribution and load driving in vehicle door modules.

For engineers reviewing the EVAL-D-L99DZ120 datasheet, EVAL-D-L99DZ120 pinout, EVAL-D-L99DZ120 application, or EVAL-D-L99DZ120 equivalent, this board supports real-time GUI-based configuration of PWM timing, current limiting, watchdog behavior, bus diagnostics, and EC glass driver settings - critical for validating system-level interoperability with STM8-based motherboards and automotive communication stacks.

Technical Context

The EVAL-D-L99DZ120 implements the L99DZ120's full analog and digital I/O interface on a dedicated daughterboard, mating with a shared STM8-based motherboard. It exposes all 12 configurable high-side driver outputs (including four 0.15/0.25 A HS drivers with 5 Ω R_ON), two half-bridges (7.5 A @ 100 mΩ and 3 A @ 300 mΩ), and isolated fail-safe logic with 1 mΩ low-side pull-downs.

Unlike the L99DZ100G variant, the L99DZ120 - and thus this daughterboard - omits electro-chromic (EC) glass control, the 0.25/0.5 A HS driver for EC MOSFETs, the second 0.5 A half-bridge pair (2000 mΩ), and the advanced CAN transceiver compliant with ISO 11898-6:2013 selective wake-up - confirming its targeted use in cost-optimized rear door systems without EC window functionality.

Key Specifications

Availability

EVAL-D-L99DZ120 is available at Aetrix Electronics and suitable for automotive rear door module development, LIN-based body electronics prototyping, and OEM-tier validation requiring stable component supply for production-intent evaluation hardware.

Supply support for EVAL-D-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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade ASSPs.

The L99DZ product line delivers integrated door zone controllers with mixed-signal drivers, communication interfaces, and safety features - engineered specifically for automotive body electronics with emphasis on rear door cost optimization and LIN-only deployment.

FAQ

Is EVAL-D-L99DZ120 a standalone evaluation board?

No. EVAL-D-L99DZ120 is a daughterboard only and must be used with the shared EVAL-L99DZ100G/EVAL-L99DZ120 motherboard containing the STM8 microcontroller, GUI interface logic, and USB connectivity. It does not include processing, USB, or user interface circuitry.

What distinguishes EVAL-D-L99DZ120 from EVAL-D-L99DZ100G?

EVAL-D-L99DZ120 hosts the L99DZ120 IC, which excludes electro-chromic glass control, the 0.25/0.5 A EC driver, two 0.5 A half-bridges (2000 mΩ), and the advanced CAN transceiver - making it functionally streamlined for rear door applications where LIN suffices and EC windows are absent.

Does EVAL-D-L99DZ120 support CAN communication?

No. The L99DZ120 IC - and therefore this daughterboard - implements only a LIN 2.2a transceiver compliant with SAE J2602. The advanced high-speed CAN transceiver present in L99DZ100G is explicitly omitted in L99DZ120 per ST's device summary and feature comparison.

What software is required to operate EVAL-D-L99DZ120?

A dedicated Windows-based GUI software (XP/7/8) provided by STMicroelectronics is required. It connects via USB Type-B cable to the motherboard and enables real-time configuration of PWM duty cycles, current limits, watchdog windows, thermal thresholds, and diagnostic monitoring of output currents, battery voltage, and die temperature.