The X-NUCLEO-OUT12A1 is an industrial digital output expansion board for STM32 Nucleo. It provides a powerful and flexible environment for the evaluation of the driving and diagnostic capabilities of the ISO808A octal high-side smart power solid state relay, with embedded galvanic isolation and 20 MHz SPI control interface, in a digital output module connected to 0.7 A industrial loads.

The X-NUCLEO-OUT12A1 directly interfaces with the microcontroller on the STM32 Nucleo driven by GPIO pins and Arduino^® R3 connectors.

The galvanic isolation between the microcontroller and the process stage is guaranteed by the ISO808A.

The expansion board can be connected to either a NUCLEO-F401RE or a NUCLEO-G431RB development board.

It is also possible to evaluate a 16 channel digital output system enabling the daisy chaining feature on two X-NUCLEO-OUT12A1 stacked expansion boards.

• Based on the ISO808A octal high-side switch, which features:
  • Operating range 9.2 to 36 V
  • Low power dissipation (R_ON(MAX) = 260 mΩ)
  • Process side operating current: up to 0.7 A per channel
  • Embedded 2k V_RMS galvanic isolation
  • PGOOD (VCC voltage level alarm signalization)
  • 20 MHz SPI with daisy chaining
  • Fast decay for inductive loads
  • Undervoltage lock-out
  • Overload and overtemperature protections
  • Loss of ground protection
  • PowerSO36 package
• Application board process side operating range: 10 (J10 open) to 33 V (J9 closed)
• Extended operating range of process side from 9.2 (J10 closed) up to 36 V (J9 open)
• Application board logic side operating voltage 3.3 to 5 V
• Green LEDs for outputs on/off status (J6 and J7 close 1-2, 3-4, 5-6, 7-8)
• Red LED for common overheating and communication error diagnostic (J3 close 1-2)
• Red LED for PGOOD signalization (J3 close 3-4)
• Yellow LED for output enable status signalization (J3 close 5-6)
• Process and logic supply rails reverse polarity protections
• Compatible with STM32 Nucleo development boards
• Equipped with Arduino^® UNO R3 connectors
• RoHS and China RoHS compliant
• CE certified