STMicroelectronics EVAL-L99PM62-72

Overview

EVAL-L99PM62-72 from STMicroelectronics is an evaluation board designed to validate the dual-power-management ICs L99PM62GXP and L99PM72GXP in automotive electronic control modules. It integrates LIN 2.1 (20 kbit/s) and HS CAN (1 Mbit/s) transceivers, five protected high-side drivers, two low-side drivers with active Zener clamping, dual 5V regulators (250 mA / 100 mA), programmable watchdog, reset generator, and real-time GUI-based diagnostics.

For engineers reviewing the EVAL-L99PM62-72 datasheet, EVAL-L99PM62-72 pinout, EVAL-L99PM62-72 application, or EVAL-L99PM62-72 equivalent, this board enables rapid validation of power sequencing, communication layer interoperability (LIN/HS CAN), contact monitoring, thermal management, and PWM-controlled actuator driving in body control modules, junction boxes, and smart power distribution units.

Technical Context

The board comprises a STM8-based motherboard and two daughterboards hosting L99PM62GXP and L99PM72GXP. The motherboard provides SPI-controlled logic for register configuration, real-time current/voltage/temperature monitoring, and diagnostic feedback via a dedicated GUI.

L99PM62GXP delivers LIN physical layer compliance (SAE J2602), ultra-low quiescent current in standby, and configurable window watchdog; L99PM72GXP adds ISO 11898-2/-5/-6 HS CAN with local/bus failure diagnosis and selective wake-up - both support 3-channel contact sensing and periodic system wake-up.

Key Specifications

Availability

EVAL-L99PM62-72 is available at Aetrix Electronics and suitable for automotive body control modules, junction box development, and smart power distribution units requiring stable component supply, full-stack communication validation (LIN + HS CAN), and functional safety-ready power management prototyping.

Supply support for EVAL-L99PM62-72 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, specializing in automotive, industrial, and power management solutions with broad IP portfolio and AEC-Q100 qualified product lines.

This evaluation board supports ST's L99PM family - purpose-built for automotive electronic control units requiring integrated LIN/HS CAN transceivers, multi-channel protected drivers, and ultra-low-power standby operation in harsh environments.

FAQ

What microcontroller is used on the motherboard?

The motherboard uses an STM8AF51xAT microcontroller - a 16-MHz automotive-grade 8-bit MCU with SPI, UART, LIN, CAN, I²C, and ADC interfaces. It serves as the host controller for configuring L99PM62GXP/L99PM72GXP registers, reading diagnostics, and managing GUI communication via USB-to-serial bridge (FT232RL).

Does the board support both LIN and HS CAN simultaneously?

Yes - the EVAL-L99PM62-72 natively supports concurrent LIN (via L99PM62GXP) and HS CAN (via L99PM72GXP) operation. Physical layer signals are routed separately: LIN_TX/RX and CAN_H/CAN_L are accessible through dedicated headers (IO_CON2–IO_CON7), enabling simultaneous bus traffic analysis and protocol stack validation.

How is power sequencing managed between the two ICs?

Power sequencing is controlled via the STM8 motherboard using configurable GPIOs and SPI commands. The board implements independent 5V supplies (VS_PERM, VS_SW, 5V1, 5V2) with enable/disable control per IC domain. Standby modes, wake-up triggers (WU1–WU3), and reset generation are programmable through GUI or direct register writes.

Is GUI software included and compatible with modern OS versions?

Yes - ST provides the "L99PM GUI" software (Windows-only, tested on Windows 10/11) with installer, driver package (VCP for FT232RL), and preconfigured profiles. It displays real-time waveforms for output currents, monitors VBAT and die temperature, logs faults (open-load, overcurrent, thermal warning), and allows register-level editing of watchdog timeout, reset thresholds, and PWM duty cycles.