STMicroelectronics STEVAL-IPMNM1N

Overview

STEVAL-IPMNM1N from STMicroelectronics is a compact 3-phase motor drive evaluation board based on the SLLIMM-nano intelligent power module STIPN1M50T-H (500 V, 1 A, 3.6 Ω max), supporting up to 60 W nominal power and 0.35 Arms motor current, with integrated hardware overcurrent protection, IPM temperature monitoring, and Hall/encoder interface for field-oriented control (FOC) in white goods and HVAC compressors.

For engineers reviewing the STEVAL-IPMNM1N datasheet, STEVAL-IPMNM1N pinout, STEVAL-IPMNM1N application, or STEVAL-IPMNM1N equivalent, this board delivers verified current-sensing flexibility (single/three-shunt), three sensing paths (onboard op-amps, MCU-based, or internal IPM op-amp), and direct compatibility with STM32 control boards for rapid FOC development.

Technical Context

The board implements a complete 3-phase inverter stage using the STIPN1M50T-H IPM, which integrates six rugged MOSFETs with built-in undervoltage lockout, smart shutdown logic, NTC-based thermal monitoring, and a single internal operational amplifier for current feedback. It supports both single-shunt and three-shunt current sensing topologies.

Signal conditioning includes three TSV994 quad rail-to-rail op-amps for phase current amplification, configurable Hall/encoder input filtering via RC networks and DIP switches, and dedicated fault signaling (EM_STOP, temperature alert) routed to MCU-compatible voltage levels (3.3 V / 5 V).

Key Specifications

Availability

STEVAL-IPMNM1N is available at Aetrix Electronics and suitable for motor control development, FOC algorithm validation, and inverter stage prototyping requiring stable component supply in white goods, HVAC systems, and industrial fan applications.

Supply support for STEVAL-IPMNM1N 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 devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

This board belongs to ST's STEVAL motor control evaluation platform family, engineered to accelerate adoption of SLLIMM-nano IPMs and STM32-based FOC implementations in cost-sensitive, space-constrained motor drives.

FAQ

Does STEVAL-IPMNM1N support three-shunt current sensing?

Yes. The board supports both single-shunt and three-shunt configurations via jumper-selectable routing and dedicated op-amp channels. Three onboard TSV994 op-amps condition phase-A, -B, and -C currents independently, with gain and offset set by precision resistors per schematic DB3361 Rev 2 pages 3–5.

What is the role of the STIPN1M50T-H IPM on this board?

The STIPN1M50T-H is the core 3-phase inverter module: a fully molded SLLIMM-nano device integrating six 500 V, 1 A MOSFETs with short-circuit ruggedness, integrated bootstrap diodes, undervoltage lockout, thermal shutdown, and one internal op-amp - reducing external component count while maintaining high reliability.

Can STEVAL-IPMNM1N be used with non-ST MCUs?

Yes, provided the host MCU supplies 3.3 V or 5 V logic-level PWM signals, accepts 3.3 V fault/status signals (EM_STOP, temperature alert), and interfaces with the 32-pin motor control connector. Signal timing and voltage thresholds must match those specified in DB3361 Rev 2 section 4.2 and Figure 2.

Is hardware overcurrent protection implemented independently of the MCU?

Yes. Overcurrent detection uses analog comparators tied to shunt voltage outputs, triggering immediate EM_STOP assertion and IPM shutdown without MCU intervention. This hardware path ensures sub-microsecond response to phase-to-ground or phase-to-phase faults, as confirmed in schematic page 3 and functional description section 2.3 of DB3361.