1Getting started
1.1 Overview
The X-NUCLEO-OUT12A1 embeds the ISO808A intelligent power switch (IPS), which features galvanic isolation,
20 MHz SPI and Power Good diagnostic, overcurrent and overtemperature protection for safe output loads
control.
The board is designed to meet the application requirements for the galvanic isolation between the user and power
interfaces.
The galvanic isolation embedded by the ISO808A satisfies this requirement, avoiding the necessity of external
optocouplers, with a consequent cost saving and a reduced application size.
The expansion board features:
• Based on the ISO808A octal high-side switch, which features:
– Operating range 9.2 to 36 V
– Low power dissipation (RON(MAX) = 260 mΩ)
– Process side operating current: up to 0.7 A per channel
– Embedded 2k VRMS 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
• Radiated emission: class B according to the standard EN 55032
UM3080
Getting started
UM3080 - Rev 1 page 2/19
