STMicroelectronics AEK-MOT-WINH92

Overview

AEK-MOT-WINH92 from STMicroelectronics is an automotive-grade evaluation board for DC motor control in window lift systems, built around the L99H92 H-bridge gate driver IC. It supports full-bridge (bidirectional) or dual half-bridge (two unidirectional) configurations, delivers up to 50 A motor current, integrates in-line/low-side/high-side current sensing with programmable gain (e.g., Gain = 50, I_min = 1.8 A, I_max = 50 A), and features reverse battery protection, open-load/short-circuit/thermal/overvoltage/overcurrent diagnostics, and a dedicated DIAG pin for real-time fault alerting.

For engineers reviewing the AEK-MOT-WINH92 datasheet, AEK-MOT-WINH92 pinout, AEK-MOT-WINH92 application, or AEK-MOT-WINH92 equivalent, this board enables rapid development of ASIL-B–aligned anti-pinch algorithms without motor encoders-leveraging configurable current sensing, SPI-controlled register access (e.g., CSCR bits 14–13 and 6–5), watchdog support, and AutoDevkit SPC58 MCU integration for window lift, sunroof, and dual-pump control.

Technical Context

The board implements a hardware-accelerated anti-pinch solution using three independent current sensing paths-each with selectable gain and dedicated analog signal conditioning (e.g., TSC103IYPT current sense amplifier)-to detect mechanical obstruction via torque-current correlation. Its diagnostic architecture routes fault conditions (open-load, short-to-ground/battery, thermal warning, overtemperature shutdown, under/overvoltage, overcurrent) directly to the DIAG pin, bypassing polling-based SPI checks for deterministic response.

It interfaces with host MCUs via discrete digital signals (EN, DIR/IN2, PWM/IN1, FSINB), isolated SPI (SDI, SDO, CSN, CLK), and analog current outputs (CSO1, CSO2, CS_AUX, CS_Output), while supporting both single-motor full-bridge and dual-motor half-bridge topologies through jumper-configurable power stage routing (STL285N4F7AG MOSFETs).

Key Specifications

Availability

AEK-MOT-WINH92 is available at Aetrix Electronics and suitable for automotive window lift systems, sunroof actuation, dual-pump control (e.g., oil/water), and ASIL-B–aligned DC motor safety validation requiring stable component supply, traceable sourcing, and lifecycle continuity.

Supply support for AEK-MOT-WINH92 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 portfolios and AEC-Q100–qualified product lines.

The AEK-MOT-WINH92 belongs to ST's AutoDevkit ecosystem and is part of the L99H92-based evaluation platform family, engineered specifically to accelerate functional safety-compliant development of anti-pinch window lift systems and other automotive DC motor applications.

FAQ

What microcontrollers are officially supported with the AEK-MOT-WINH92?

The board is validated with ST's SPC58 series MCUs: SPC582Bxx (on AEK-MCU-C1MLIT1), SPC584Bxx (on SPC584B-DIS), and SPC58ECxx (on AEK-MCU-C4MLIT1). Six prebuilt AutoDevkit Studio demos-including full-bridge, dual half-bridge, and window lift–specific firmware-are provided for immediate use with these targets.

Does the AEK-MOT-WINH92 require external current sense amplifiers?

No-the board integrates the TSC103IYPT current sense amplifier for high-side sensing and uses internal L99H92 current sense channels for in-line and low-side paths. All three sensing modes feed analog outputs (CSO1, CSO2, CS_AUX, CS_Output) directly to the host MCU's ADC or external signal chain.

How is anti-pinch functionality implemented without a motor encoder?

Anti-pinch is realized by monitoring real-time motor current profiles during window movement: abnormal torque-induced current spikes (e.g., from ice or obstruction) are detected via programmable-gain current sensing (Gain = 50, I_min = 1.8 A) and processed by host MCU firmware using ST's reference algorithms-eliminating encoder dependency.

Can the AEK-MOT-WINH92 drive two independent motors simultaneously?

Yes-it supports dual half-bridge configuration via jumper settings, enabling independent control of two unidirectional DC motors (e.g., oil pump and water pump). Each half-bridge uses separate MOSFET pairs (Q1/Q2 and Q5/Q6), with dedicated EN, DIR/IN2, and PWM/IN1 signals routed to J1–J5 connectors.