STMicroelectronics EVAL-L9001

Overview

EVAL-L9001 from STMicroelectronics is an evaluation board for the L9001 smart power device-a multiple-output automotive-grade power supply IC integrating a buck regulator (5 V), configurable buck/linear regulator (1.2 V), and LDO (5 V), with integrated watchdog, voltage/current/temperature supervision, and fail-safe reset generation. It supports SPC5x microcontroller power sequencing in vehicle body control modules.

For engineers reviewing the EVAL-L9001 datasheet, EVAL-L9001 pinout, EVAL-L9001 application, or EVAL-L9001 equivalent, this board enables rapid validation of L9001's multi-rail regulation, diagnostic signaling, watchdog servicing, and low-power mode behavior under real automotive input conditions (5.5–18 V).

Technical Context

The EVAL-L9001 implements a reference hardware configuration for the L9001 PowerSSO-24 packaged IC, providing direct access to all critical control and diagnostic signals-including EN, WDI, RST_OUT, VS_MON, TEMP_ALERT, and OC_FLAG-via test points and a 10-pin expansion connector. It replicates the SPC5x MCU power tree with dedicated 5 V peripheral, 1.2 V core, and 5 V ADC reference rails.

Board-level supervision includes analog monitoring of input voltage (VS), thermal shutdown feedback, output overcurrent detection, and configurable window watchdog timing via external resistor selection. All regulators remain active in low-power mode, reducing quiescent current while maintaining system readiness.

Key Specifications

Availability

EVAL-L9001 is available at Aetrix Electronics and suitable for automotive ECU development, SPC5x-based body control module prototyping, and functional safety validation requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-L9001 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.

The EVAL-L9001 belongs to ST's automotive evaluation board portfolio, developed specifically to accelerate qualification of L9001-based power architectures in ASIL-B compliant systems such as gateway modules and domain controllers.

FAQ

What microcontroller families is EVAL-L9001 designed to support?

EVAL-L9001 is explicitly configured for the SPC5x family of 32-bit Power Architecture® microcontrollers. It delivers the exact rail sequence and voltage tolerances required by SPC56EL, SPC56EL70, and SPC572L devices-including 1.2 V core, 5 V I/O, and 5 V ADC reference-with built-in supervision aligned to SPC5x startup and fail-safe requirements.

Does EVAL-L9001 support low-power mode testing?

Yes. The board enables validation of L9001's low-power mode where main regulators remain active but quiescent current is reduced. This mode maintains VDD1, VDD2, and ADC_LDO outputs while minimizing battery drain-critical for always-on automotive functions like door module wake-up logic or CAN bus monitoring.

How is watchdog functionality verified on this board?

Watchdog verification is performed using the 10-pin expansion connector, which provides WDI (watchdog input), RST_OUT (reset output), and WDI_EN (enable). Engineers can inject timed pulses via signal generator or MCU to validate window timing, timeout behavior, and reset propagation to connected targets without soldering or modification.

Can EVAL-L9001 be used without an oscilloscope?

Yes. Basic functionality-including power-up sequencing, enable/disable control, reset assertion, and fault flag monitoring-can be validated using only a multimeter and DC power supply. An oscilloscope is optional and recommended only for dynamic analysis of transient response, watchdog timing windows, or overcurrent trip behavior.