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L99DZ120 Evaluation Board

EVAL-L99DZ120

Overview

The EVAL-L99DZ100G and EVAL-L99DZ120 are evaluation boards designed for Door Zone Applications. Both are composed by the same motherboard and they differentiate for the daughter board on which is pre-assembled the L99DZ100G in the EVAL-L99DZ100G case (conceived for front door application) or the L99DZ120 in the EVAL-L99DZ120 case (conceived for rear door applications).

The motherboard, based on STM8 microcontroller, provides the logic section for monitoring and driving the L99DZ100G or the L99DZ120 assembled in the daughterboard.
With aim of making the board usage and settings simpler, ST provides a dedicated and a user-friendly software with a Graphic User Interface (GUI). This enables the user to set L99DZ100G or L99DZ120 parameters and at the same time it shows real time device diagnostic information as the current output evolution, the battery voltage monitoring, the board temperature and much more.

Main features

1 half bridge for 7.5 A load (RON = 100 mΩ)
1 half bridge for 7.5 A load (RON = 150 mΩ)
2 half bridges for 0.5 A load (RON = 2000 mΩ) (not present in L99DZ120)
2 half bridges for 3 A load (RON = 300 mΩ)
1 configurable high-side driver for up to 1.5 A (RON = 500 mΩ) or 0.35 A (RON = 1600 mΩ) load
1 configurable high-side driver for 0.8 A (RON = 800 mΩ) or 0.35 A (RON = 1600 mΩ) load
3 configurable high-side drivers for 0.15 A/0.35 A (RON =2 Ω)
1 configurable high-side driver for 0.25 A/0.5 A (RON = 2 Ω) to supply EC Glass MOSFET (not present in L99DZ120)
4 configurable HS drivers for 0.15A/0.25A (RON = 5 Ω)
Internal 10bit PWM timer for each stand-alone HS driver
Buffered supply for voltage regulators and 2 high-side drivers (OUT15 & OUT_HS / both P-channel) to supply e.g. external contacts

Programmable soft-start function to drive loads with higher inrush currents as current limitation value (for OUT1-6, OUT7, OUT8 and OUT_HS) with thermal expiration feature
Control block for electro-chromic element (not present in L99DZ120)
Two 5 V voltage regulators for microcontroller and peripheral supply
Configurable window watchdog
LIN 2.2a compliant (SAEJ2602 compatible) transceiver
Advanced high speed CAN transceiver (ISO 11898-2:2003 /-5:2007 and SAE J2284 compliant) with local failure and bus failure diagnosis and selective wake-up functionality according to ISO 11898-6:2013 (not present in L99DZ120)
Separated (Isolated) fail-safe block with 2 LS (RON = 1 mΩ) to pull down the gates of the external HS MOSFETs
Thermal clusters
A/D conversion of supply voltages and internal temperature sensors
Embedded and programmable VS duty cycle adjustment for LED driver outputs

Design Files

L99DZ100G, L99DZ120 Evaluation Board

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Update:2025-06-02 19:07:02

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