STMicroelectronics STEVAL-PMIC25V1

Overview

STEVAL-PMIC25V1 from STMicroelectronics is an evaluation board for the STPMIC25 power management IC, designed to deliver regulated power to the core, DDR memory, and peripheral interfaces of STM32MP2x microprocessor units. It integrates seven buck converters (2 MHz COT topology), six adjustable LDOs, one DDR4/lpDDR-configurable LDO, one USB PHY LDO with automatic source detection, and one DDR reference voltage LDO.

For engineers reviewing the STEVAL-PMIC25V1 datasheet, STEVAL-PMIC25V1 pinout, STEVAL-PMIC25V1 application, or STEVAL-PMIC25V1 equivalent, this kit enables rapid validation of multi-rail sequencing, I²C programmable voltage settings, spread-spectrum EMI reduction, phase-shifted buck synchronization, and safety-critical fault response in MPU power systems.

Technical Context

The STEVAL-PMIC25V1 implements a complete hardware test platform for the STPMIC25 PMIC, supporting full register-level configuration via I²C through an included USB dongle (STSW-USBDNGFW). It provides physical access to all 7 buck outputs (VOUT1–VOUT7), 8 LDO outputs (LDO1–LDO8), reference rails (REFFDDR, VREF_DDR), and control signals (PWRCTRL1–3, INT, RST, WAKEUP).

On-board passive components-including TOKO inductors (680 nH/2.2 µH), X5R ceramic capacitors (1–100 µF), and precision resistors-are selected for stable operation across 2.8–5.5 V input and ambient temperatures up to +85 °C. Three push buttons and jumper-configurable routing enable manual trigger and physical layout adaptation without soldering.

Key Specifications

Availability

STEVAL-PMIC25V1 is available at Aetrix Electronics and suitable for embedded MPU power validation, IoT edge node development, and human-machine interface (HMI) prototype builds requiring stable component supply and full register-level configurability.

Supply support for STEVAL-PMIC25V1 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 microcontrollers, power management, sensors, and automotive ICs with vertical manufacturing and broad industrial certification coverage.

The STEVAL-PMIC25V1 belongs to ST's STPMIC evaluation kit family, developed specifically to accelerate adoption of the STPMIC25 PMIC in STM32MP2x-based systems-targeting high-efficiency, space-constrained, and safety-aware MPU power architectures.

FAQ

What software tools are required to configure the STEVAL-PMIC25V1?

The STSW-PMIC25GUI graphical user interface is mandatory for configuring voltage levels, power-on/off sequences, and protection thresholds via the included USB dongle. Firmware for the dongle (STSW-USBDNGFW) must be installed first. No standalone command-line tool or third-party software is supported.

Does the STEVAL-PMIC25V1 support real-time monitoring of output voltages and currents?

Yes - the board exposes test points (TP1–TP15) for all 7 buck outputs, 8 LDO outputs, and reference rails. Current sensing is implemented via dedicated SENSE pins on each buck channel, enabling oscilloscope-based load-step analysis and loop stability verification.

Can the STEVAL-PMIC25V1 be used with MPUs other than STM32MP2x?

Yes - while optimized for STM32MP2x, the STPMIC25 IC on the board supports generic MPU power sequencing. Engineers must validate timing margins, voltage tolerances, and I²C address compatibility against their target processor's power requirements and boot ROM constraints.

Are the jumpers and headers on the STEVAL-PMIC25V1 pre-configured for default operation?

Yes - JP1–JP6 and CN2–CN22 are factory-set for standard evaluation mode: VIN supplied via CN1, all bucks enabled, LDOs in adjustable mode, and PWRCTRL pins pulled high. Jumper removal or repositioning is only needed for custom rail isolation or alternate sequencing paths.