STMicroelectronics EVAL-L99MOD54XP

Overview

EVAL-L99MOD54XP from STMicroelectronics is an automotive-grade evaluation kit comprising a motherboard with SPC56 microcontroller and a daughterboard hosting the L99MOD54XP multi-output driver IC. It delivers half-bridge and high-side outputs, reverse battery protection via MOSFET/diode network, 12 V daughterboard power capability, and real-time monitoring of registers, analog current sense, and fault flags via GUI software.

For engineers reviewing the EVAL-L99MOD54XP datasheet, EVAL-L99MOD54XP pinout, EVAL-L99MOD54XP application, or EVAL-L99MOD54XP equivalent, this board enables rapid validation of L99MOD54XP's 11-channel high-side/low-side drive, integrated diagnostics, and automotive power management in brushed DC motor control, LED lighting, and protected supply systems.

Technical Context

The EVAL-L99MOD54XP implements a modular architecture: the SPC56-based motherboard handles SPI communication, configuration, and system-level logic, while the daughterboard hosts the L99MOD54XP IC with 11 programmable output channels (OUT1–OUT11), each supporting high-side, low-side, or half-bridge configurations. It integrates reverse battery protection using STD18NF03L MOSFET and KDZVTR13B Zener diode.

Real-time device interaction is enabled through dedicated LabVIEW-based GUI (STSW-L99MOD5xXP), requiring VISA and LabVIEW Run-Time Engine. Communication occurs over SPI (CSN, CLK, DO, DI) with diagnostic feedback including analog current sense voltage and discrete fault flag reporting.

Key Specifications

Availability

EVAL-L99MOD54XP is available at Aetrix Electronics and suitable for automotive brushed DC motor control, LED headlight/interior lighting modules, protected auxiliary supply design, and body electronics ECU development requiring stable component supply and validated reference hardware.

Supply support for EVAL-L99MOD54XP 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 analog/mixed-signal devices.

The EVAL-L99MOD54XP belongs to ST's L99MOD5xXP family of multi-output drivers targeting automotive body electronics, specifically engineered for centralized control of multiple loads-brushed motors, bulbs, LEDs-with integrated diagnostics and robust protection.

FAQ

What microcontroller is used on the EVAL-L99MOD54XP motherboard?

The motherboard uses the SPC56 microcontroller series from STMicroelectronics, configured to manage SPI communication with the L99MOD54XP daughterboard, execute GUI command translation, and handle system-level monitoring and fault response logic across all 11 output channels.

Does EVAL-L99MOD54XP support real-time current sensing?

Yes - the daughterboard provides an analog current sense output derived from internal sense FETs in the L99MOD54XP IC, enabling real-time per-channel load current measurement without external shunt resistors or amplifiers, directly accessible via the STSW-L99MOD5xXP GUI.

Can EVAL-L99MOD54XP be powered solely through the daughterboard connector?

Yes - the daughterboard includes a dedicated 12 V input connector, allowing standalone operation without relying on the motherboard's power rails. This enables isolated testing of L99MOD54XP's output stages, protection circuitry, and thermal behavior under defined supply conditions.

Is the GUI software compatible with modern Windows versions?

Yes - STSW-L99MOD5xXP GUI supports Windows XP, 7, 8, and 10. It requires installation of National Instruments VISA and LabVIEW Run-Time Engine prior to use, both available free from NI's official website, ensuring full functionality on current enterprise and development platforms.