STMicroelectronics EVAL-L99MOD50XP

Overview

EVAL-L99MOD50XP from STMicroelectronics is an automotive-grade evaluation kit comprising a motherboard with SPC56 microcontroller and a daughterboard hosting the L99MOD50XP 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 register/current/fault monitoring via GUI software.

For engineers reviewing the EVAL-L99MOD50XP datasheet, EVAL-L99MOD50XP pinout, EVAL-L99MOD50XP application, or EVAL-L99MOD50XP equivalent, this kit enables rapid validation of L99MOD50XP in brushed DC motor control, LED/bulb driving, and protected supply configurations under automotive standby and active modes.

Technical Context

The kit implements a dual-board architecture: the motherboard handles logic, communication (SPI via CSN/CLK/DO/DI), and power sequencing for the daughterboard-mounted L99MOD50XP. The daughterboard provides 11 high-side outputs (OUT1–OUT11), PWM1/PWM2 inputs, current sense (CSN), and fault reporting (CM/PWM2 as fault flag).

L99MOD50XP operates from 5.5 V to 28 V supply, supports up to 600 mA per channel, integrates thermal shutdown and overcurrent protection, and communicates via 4-wire SPI at up to 10 MHz - all validated on this board using dedicated STSW-L99MOD5xXP GUI software under Windows OS.

Key Specifications

Availability

EVAL-L99MOD50XP is available at Aetrix Electronics and suitable for automotive body electronics, HVAC actuator development, lighting module prototyping, and ECU functional safety validation requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-L99MOD50XP 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.

This kit belongs to ST's "Bolero" Universal Board family for multi-output driver (MOD) evaluation, engineered specifically to accelerate development of automotive high-side switching systems with integrated diagnostics and protection.

FAQ

What microcontroller is used on the EVAL-L99MOD50XP motherboard?

The motherboard uses the SPC56 microcontroller series - a 32-bit Power Architecture device optimized for automotive applications. It manages SPI communication with the L99MOD50XP, executes firmware for output sequencing, and interfaces with the PC via USB-to-serial bridge for GUI connectivity.

Does EVAL-L99MOD50XP support PWM dimming or speed control?

Yes - it accepts two independent PWM inputs (PWM1 and PWM2) mapped to internal driver channels. PWM1 controls OUT1–OUT6; PWM2 controls OUT7–OUT11. Duty cycle and frequency are set via GUI or direct SPI register writes, enabling precise brushed motor speed or LED brightness control.

Can the daughterboard be used independently from the motherboard?

No - the daughterboard lacks onboard MCU, clock source, or USB interface. It requires the motherboard for SPI initialization, register configuration, fault handling, and GUI communication. All control signals (CSN, CLK, DO, DI, PWM1/2, CM) originate from the SPC56-based motherboard.

Is STSW-L99MOD5xXP software compatible with Linux or macOS?

No - the official STSW-L99MOD5xXP GUI requires Windows OS (XP through 10) and depends on National Instruments VISA and LabVIEW Run-Time Engine, both Windows-only dependencies. No native Linux/macOS version or command-line alternative is provided by ST.