STMicroelectronics EVAL-L99DZ100G

Overview

EVAL-L99DZ100G from STMicroelectronics is a motherboard-and-daughterboard evaluation platform for the L99DZ100G automotive door zone IC, supporting front-door applications with dual half-bridge (7.5 A/100 mΩ and 7.5 A/150 mΩ), four 3 A half-bridges, six configurable high-side drivers, LIN 2.2a and high-speed CAN transceivers, and electro-chromic element control. It integrates an STM8 microcontroller for logic management and real-time diagnostics.

For engineers reviewing the EVAL-L99DZ100G datasheet, EVAL-L99DZ100G pinout, EVAL-L99DZ100G application, or EVAL-L99DZ100G equivalent, this board enables rapid validation of multi-load driving, bus communication, thermal monitoring, and programmable soft-start in automotive body electronics - especially for front-door module development requiring integrated power switching and fail-safe diagnostics.

Technical Context

The EVAL-L99DZ100G implements a modular architecture: the motherboard hosts the STM8 MCU, LIN/CAN physical layers, voltage regulators (dual 5 V), watchdog, and USB interface; the daughterboard mounts the L99DZ100G ASIC with its full complement of eight high-side drivers, two half-bridges, EC glass MOSFET driver, isolated fail-safe block (2 LS, R_ON = 1 mΩ), and internal 10-bit PWM timers per HS output.

It supports real-time parameter configuration via GUI software over USB, including VS duty cycle adjustment for LED outputs, programmable soft-start thresholds for OUT1–6/OUT7/OUT8/OUT_HS, and diagnostic readback of supply voltages, internal temperature, and output current evolution - all aligned with ISO 11898-2/5/6 and SAE J2602 compliance requirements.

Key Specifications

Availability

EVAL-L99DZ100G is available at Aetrix Electronics and suitable for automotive front-door module development, body control unit (BCU) prototyping, and electro-chromic mirror/glass driver validation requiring stable component supply and production-aligned diagnostics.

Supply support for EVAL-L99DZ100G 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade analog devices with strong focus on functional safety and AEC-Q100 qualification.

The L99DZ series targets automotive door zone control - integrating high-current drivers, communication interfaces, and fail-safe supervision to consolidate functions previously distributed across multiple discrete components in front/rear door modules.

FAQ

What is the difference between EVAL-L99DZ100G and EVAL-L99DZ120?

EVAL-L99DZ100G uses the L99DZ100G daughterboard optimized for front-door applications and includes features absent in L99DZ120: electro-chromic element control, an additional 0.25 A/0.5 A HS driver for EC glass MOSFETs, and advanced CAN functionality per ISO 11898-6:2013. EVAL-L99DZ120 is configured for rear-door use with reduced driver count and no EC support.

Does EVAL-L99DZ100G require external power or is it USB-powered?

EVAL-L99DZ100G requires an external 12 V automotive supply for full operation of all power outputs and drivers; USB provides only communication and GUI interface. The board includes reverse-polarity protection and undervoltage lockout, and draws <100 mA from USB for MCU and transceiver logic when 12 V is not applied.

Can the soft-start function be adjusted per channel?

Yes - soft-start parameters (current limit threshold and ramp time) are independently programmable for OUT1–6, OUT7, OUT8, and OUT_HS via the GUI software. Each setting includes thermal expiration behavior that disables the output if inrush current exceeds the configured limit for longer than the timeout period.

Is the CAN transceiver galvanically isolated?

No - the high-speed CAN transceiver on EVAL-L99DZ100G is non-isolated and compliant with ISO 11898-2:2003 and -5:2007. Isolation must be implemented externally if required by system architecture; the board provides standard CAN_H/CAN_L termination and biasing for direct connection to vehicle bus.