1 Getting started
1.1 Overview
The X-NUCLEO-OUT07A1 embeds the IPS4260LM intelligent power switch (IPS), which features overcurrent and
overtemperature protections for safe output load control, and open load detection. The overcurrent protection
threshold can be configured by a resistor connected between the RILIM pin and the ground: the onboard
connector J8 allows the easy selection of the most typical current limitation levels (0.5A, 1.0A, 2.0A). Also, the
overcurrent protection can be combined with the low dissipative current limitation feature (cutoff) that limits the
time duration of the overload event by a resistor mounted between RCOD and ground. The same connector J8 can
disable the cutoff feature by closing J8[7-8], if necessary (for example, in case of high capacitive loads). The open
load detection can be enabled closing J7 [1-2, 3-4, 5-6, 7-8] or disabled (J7 open).
The board is designed to meet the application requirements for the galvanic isolation between the user and power
interfaces: the isolation is implemented through one monodirectional digital isolator (STISO620 for cumulative
diagnostic signals FAULT and OL), four bidirectional digital isolators (STISO621 for INX driving signals and
related per-channel overload diagnostic) and an isolated DC-DC converter (DC1, generating the 5V and 10V rails
on the process stage from the 5V rail on the logic side).
The expansion board features:
• Based on the IPS4260LM quad low-side switch, which features:
– Operating range from 8 to 50 V
– High Speed operation (trise, tfall < 1us)
– Process stage operating current: configurable from 350 mA (per channel) up to 2A (parallelized
channels)
– Low-power dissipation (RON(TYP) = 260 mΩ)
– Configurable low dissipative cutoff function in overload conditions
– Per-channel overload, short circuit, and thermal junction protections
– Fast decay for inductive loads (VOUT clamp)
– Open load detection
– Undervoltage lock-out
– Loss of ground protection
– HTSSOP20 package
• Galvanic isolation between logic side and process stage by STISO620, STISO621 digital isolators and
isolated DC-DC converter
• Selectable supply of the IPS4260LM from on board isolated DC-DC converter (SW7 close 1-2), or from 24
V supply rail (SW7 close 2-3)
• Process stage operating range: 10 V (SW7 close 1-2) or 10 V to 30 V (SW7 close 2-3)
• Process stage supply rail reverse polarity protections (J1 open)
• Application board logic side operating voltage 3.3 V or 5 V
• Green LEDs for outputs on/off status (J6 close 1-2, 3-4, 5-6, 7-8)
• Open load detection enable (J7 close 1-2, 3-4, 5-6, 7-8)/disable (J7 open)
• Red LEDs for overload and thermal warning (D8) and open load (D6) diagnostic
• Selectable current limitation level (J8[1-2, 3-4, 5-6])
• Cut-Off enable (J8 open 7-8)/disable (J8 close 7-8) options
• Per channel overload diagnostic available on Arduino (CN5[9,10], CN8[5, 6])
• Easy parallelization of input (J9) and output channels (J10)
• Compatible with STM32 Nucleo development boards
• Equipped with Arduino® UNO R3 connectors
• RoHS and China RoHS compliant
• CE certified
UM3285
Getting started
UM3285 - Rev 1 page 2/20
