STMicroelectronics EVAL-L99MOD51XP

Overview

EVAL-L99MOD51XP from STMicroelectronics is an automotive-grade evaluation kit comprising a SPC56-based motherboard and a daughterboard populated with the L99MOD51XP multi-output driver IC. It delivers high-side and half-bridge output configurations, reverse battery protection via integrated MOSFET/diode network, 12 V daughterboard power capability, and real-time register/current/fault monitoring via GUI software.

For engineers reviewing the EVAL-L99MOD51XP datasheet, EVAL-L99MOD51XP pinout, EVAL-L99MOD51XP application, or EVAL-L99MOD51XP equivalent, this board enables rapid validation of L99MOD51XP-driven motor control, LED/bulb load switching, and protected supply architectures in vehicle body electronics.

Technical Context

The EVAL-L99MOD51XP implements a modular two-board architecture: the motherboard hosts the SPC56 microcontroller for logic, communication (SPI via CSN/CLK/DO/DI), and system-level supervision, while the daughterboard integrates the L99MOD51XP IC with 11 high-side outputs, PWM1/PWM2 control inputs, current sense (CSN), and fault reporting (CM). All outputs support up to 60 V load voltage and feature thermal shutdown and overcurrent detection.

Power delivery includes dual-input capability-VBAT (up to 40 V) and dedicated 12 V daughterboard connector-and on-board 5 V regulation for MCU and peripheral rails. The board supports real-time parameter configuration and status readback via STSW-L99MOD5xXP GUI running on Windows with VISA and LabVIEW Run-Time Engine.

Key Specifications

Availability

EVAL-L99MOD51XP is available at Aetrix Electronics and suitable for automotive body control modules, brushed DC motor actuation systems, and LED lighting control applications requiring stable component supply and validated reference design integration.

Supply support for EVAL-L99MOD51XP 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/mixed-signal devices.

The EVAL-L99MOD5xXP series belongs to ST's automotive evaluation platform family, developed specifically to accelerate development of intelligent power distribution and multi-load control systems for vehicle body electronics.

FAQ

What is the primary function of the EVAL-L99MOD51XP evaluation kit?

The EVAL-L99MOD51XP is a complete hardware-software evaluation platform for the L99MOD51XP multi-output driver IC. Its purpose is to enable functional validation, parameter tuning, and system integration testing of high-side load switching in automotive applications-including motors, LEDs, and bulbs-using real-time GUI-controlled SPI communication and on-board protection circuitry.

Which microcontroller is used on the motherboard?

The motherboard uses the SPC56 microcontroller family-specifically configured as the logic and interface controller for the L99MOD51XP daughterboard. It handles SPI communication, PWM signal generation, fault response coordination, and USB-to-SPI bridge functionality required by the STSW-L99MOD5xXP GUI software.

Does the EVAL-L99MOD51XP support reverse battery protection?

Yes. The board implements a discrete MOSFET and Zener diode reverse battery protection network on the input stage, as confirmed in the DB4077 data brief. This safeguards both the L99MOD51XP IC and downstream loads against incorrect battery polarity connection during vehicle service or assembly.

Can the EVAL-L99MOD51XP be used without the GUI software?

Yes-hardware-level operation is fully functional without the GUI. Users may drive outputs directly via SPI commands or external PWM signals applied to PWM1/PWM2 pins. However, the STSW-L99MOD5xXP GUI is required to access real-time analog current sense values, register dumps, and consolidated fault flag interpretation per channel.