L99DZ100GTR: An Integrated Solution for Automotive Door Control Systems

Overview

L99DZ100GTR is a smart power driver with a 64-pin LQFP package. It is equipped with high-side driver, low-side driver, motor control, LIN and CAN transceivers, voltage regulator, and system monitoring module. This device is specifically designed for the door control module and can control functions such as window raising and lowering, door locking, mirror adjustment and heating, and electrochromic mirrors.

Features

AEC Q100 compliant qualified·

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)·

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 for0.15 A/0.35 A (RON =2Ω)·

1 configurable high-side driver for 0.25 A/0.5 A(RON = 2Ω) to supply EC Glass MOSFET·

4 configurable high-side drivers for0.15 A/0.25 A (RON = 5Ω)·

Internal 10bit PWM timer for each stand-alonehigh-side driver·

Buffered supply for voltage regulators and 2high-side drivers (OUT15 & OUT_HS / bothP-channel) to supply e.g. external contacts·

Programmable soft-start function to drive loadswith higher inrush currents as current limitationvalue (for OUT1-6, OUT7, OUT8 andOUT_HS) with thermal expiration feature

All the embedded outputs come with protectionand supervision features:

–Current Monitor (high-side only)

–Open-load

–Overcurrent

–Thermal warning

–Thermal shutdown·

Fully protected driver for external MOSFETs inH-bridge configuration or dual Half bridgeconfiguration·

Fully protected driver for external high-sideMOSFET·

Control block for electro-chromic element·

Two 5 V voltage regulators for microcontrollerand peripheral supply·

Programmable reset generator for power-onand undervoltage·

Configurable window watchdog·

LIN 2.2a compliant (SAEJ2602 compatible)transceiver·

Advanced high speed CAN transceiver (ISO11898-2:2003 /-5:2007 and SAE J2284compliant) with local failure and bus failurediagnosis and selective wake-up functionalityaccording to ISO 11898-6:2013·

Separated (Isolated) fail-safe block with 2 LS(RON = 1Ω) to pull down the gates of theexternal HS MOSFETs·

Thermal clusters·

A/D conversion of supply voltages and internaltemperature sensors·

Embedded and programmable VS duty cycleadjustment for LED driver outputs

Key Advantages

-Multi-Motor Drive：Drives up to 5 DC motors; supports external H-bridges

-Integrated Communication：Built-in LIN and CAN transceivers

-Power Management：Integrated LDOs, reset generator, and watchdog

-Protection & Diagnostics：Overcurrent, short-circuit, thermal, and open-load protection

-Compact Packaging：64-pin LQFP (10x10 mm), suitable for space-constrained modules

Typical Applications

-Front/rear door control units (DCUs)

-Power window and central locking systems

-Electric mirror control (adjustment, heating, folding, auto-dimming)

-Interior and exterior lighting control

Conclusion

The L99DZ100GTR is a highly integrated, feature-rich, and automotive-grade chip ideal for door control applications. It consolidates motor control, power regulation, load driving, and communication functions into a single device, enabling simpler, more robust, and cost-effective designs for automotive engineers.

With its comprehensive functionality and strong reliability, the L99DZ100GTR is undoubtedly the"brains"behind modern intelligent door modules.