STMicroelectronics STEVAL-STPM801

Overview

STEVAL-STPM801 from STMicroelectronics is an evaluation board for the STPM801 dual-channel hot-swap and ideal diode controller, enabling dual-supply redundancy testing with up to 30 A per output, configurable 12 V/24 V UV/OV thresholds, and onboard oring MOSFETs for automotive power distribution architectures.

For engineers reviewing the STEVAL-STPM801 datasheet, STEVAL-STPM801 pinout, STEVAL-STPM801 application, or STEVAL-STPM801 equivalent, this board supports rapid validation of high-voltage hot-swap sequencing, supply-or-ing behavior, fault reporting via FLT pins, and SPI-configurable thermal monitoring across two independent STPM801 channels.

Technical Context

The board implements two fully independent STPM801 sections-each with dedicated VB, OUT, HGATE/DGATE, SENSE, and TMx thermal monitor pins-supporting parallel or isolated operation. Each section integrates external N-channel MOSFETs for hot-swap current limiting and ideal diode control, with programmable soft-start via CP1P/CP1M and CP2P/CP2M charge pump networks.

It provides dual 5 V LDO outputs (U3/U4, L5150BN) for controller bias, test-point access to all critical signals (ENOUT, FLT, TM_EN, SPI interfaces), and jumper-selectable configurations for single/dual supply mode, UV/OV threshold scaling, and test point enablement.

Key Specifications

Availability

STEVAL-STPM801 is available at Aetrix Electronics and suitable for automotive power distribution, redundant server PSU validation, industrial backup power systems, and high-reliability DC-DC front-end design requiring stable component supply and full functional prototyping support.

Supply support for STEVAL-STPM801 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, designing and manufacturing microcontrollers, power management ICs, analog devices, and automotive-grade solutions.

The STEVAL-STPM801 belongs to ST's evaluation board portfolio for high-voltage power controllers, developed specifically to accelerate design-in of STPM801 in automotive and industrial redundancy architectures requiring hot-swap sequencing and supply-or-ing capability.

FAQ

What is the maximum continuous load current supported per STPM801 channel on this board?

The STEVAL-STPM801 supports up to 30 A continuous output current per channel, achieved using external N-channel MOSFETs (Q1/Q3 and Q4/Q6) with low R_DS(on), verified under forced-air cooling and 24 V input per the DB5067 data brief. Current sense resistors (R1/R3/R24/R26) are 2 mΩ, enabling accurate 0–30 A measurement with ±1% tolerance.

Can the board operate with only one input supply active?

Yes-the two STPM801 sections are electrically independent. Users may power only BATTERY1 (J1) or only BATTERY2 (J5), leaving the unused supply line unconnected or terminated. JP1/JP5 jumpers isolate each section's VDD and GND domains, and ENOUT_1/ENOUT_2 allow individual channel enable/disable without affecting the other.

How are undervoltage and overvoltage thresholds configured?

UV and OV thresholds are set via resistor dividers: R10/R12 for Section 1 (VB1), R33/R35 for Section 2 (VB2). Default values support 12 V or 24 V nominal inputs; scaling equations are provided in the STPM801 datasheet. Trim points TP1/TP11 allow real-time adjustment during testing without soldering changes.

Does the board provide SPI communication capability for configuration?

Yes-each STPM801 section has a dedicated 4-wire SPI interface (JP17 for Section 1, JP18 for Section 2), including CSN (STBY), SCK, SDI, and SDO. All signals are buffered and accessible via test points (TP23/TP24), enabling direct connection to host microcontrollers for register read/write, fault logging, and thermal profile tuning.