Product overview
Description
The X-NUCLEO-DOL10A1 industrial digital output expansion board for STM32 Nucleo provides a powerful and flexible environment for the evaluation of the driving and diagnostic capabilities of the IPS1050LQ single low-side smart power solid state relay, with configurable smart overload protection.
The X-NUCLEO-DOL10A1 expansion board interfaces with the microcontroller on the STM32 Nucleo via STISO620 and Arduino®R3 connectors. The expansion board can be connected to either a NUCLEO-F401RE or a NUCLEO-G431RB development board.
The digital isolators STISO620 (featuring 2.8 kVRMS galvanic isolation) and the isolated dc-dc DC1 (featuring 3 kVDC isolation) protects the logic side from the typical harsh environment on the process side.
The logic side is the application side where the MCU operates and it is supplied by the VISO_L rail (3.3 V or 5.0 V, according to setting of SW7). The on-board Arduino® UNO R3 connectors enable the connection to either a NUCLEO-F401RE or a NUCLEO-G431RB development board.
When the X-NUCLEO-DOL10A1 is stacked on a NUCLEO-F401RE, or on a NUCLEO-G431RB, the VISO_L is supplied by the Nucleo board if connected to a PC/Laptop by USB cable. If the X-NUCLEO-DOL10A1 is used standalone, then VISO_L can be supplied by the CN6[4] (SW7 = close 1-2) or CN6[5] (SW7 = close 2-3).
The process side is the application side beyond the galvanic isolation barrier. On the process side there are three supply rails: the 5V_P (5.0 V) and 10V_P (10.0 V) both from DC1, an the 6V rail (derived from V_FIELD_RP line through LDO40LPURY).
The 5V_P and 10V_P rails can be enabled by JP4 = close. The 6V rail can be enabled by JP5 = close.
The SW11 defines the supply rail of U1: by default from 6V rail (SW11 = close 2-3), or alternatively from 10V_P rail (SW11 = close 1-2).
The SW12 defines the pull-up rail of the open drain diagnostic signals: by default from 6V rail (SW12 = close 2-3), or alternatively from 5V_P rail (SW12 = close 1-2).
The V_FIELD_RP rail (from CN1 connector) is protected both from reverse polarity on CN1 (by the STPS1H100A, provided that J1 remains open) and against surge pulse (by SM15T39CA (U2), provided that J2 is set closed).
The load is connected between the CN1[2] connector and the process side supply rail (typically 24 V) on CN1[1]. The reference rail (ground) of the process side power supply rail must be connected to CN1[3].
The SW13 allows the selection or not of the external TVS that ca be used for the demagnetization of the inductive load and for sustaining the surge pulse on the output stage.
The low side power switch integrated in U1 can be activated/deactivated by the control signals IN_L: by default, this signal is controlled by CN5[2] through SW1[1-2].
The on board green LED D5 can be enabled by closing J3: this is driven ON/OFF according to the status (active/inactive) of the low side power switch (OUT) integrated in the U1.
The diagnostic signal OVT_L (over-temperature) is available on CN9[6] (SW6 = close 1-2) or CN5[4] (SW6 = close 2-3).
Smart overload protection can be configured through the inrush current level setting as follows:
- Configuration for inrush current level setting through IPDx digital signals (MCU): SW8 = close 2-3, SW9 = close 2-3, SW10 = close 2-3
- Configuration for inrush current level static setting through the digital signal driving the output channel (IN_L): SW8 = close 1-2 (for H level J14 = close, for L level J13 = close), SW9 = close 1-2 (for H level J19 = close, for L level J18 = close), SW10 = close 1-2 (for H level J24 = close, for L level J23 = close)
- Configuration for inrush current level dynamic setting through the digital signal driving the output channel (IN_L): SW8 = close 1-2, J14 = close and J10, J11, J12 setting for the proper capacitance selection, SW9 = close 1-2, J19 = close and J15, J16, J17 setting for the proper capacitance selection, SW10 = close 1-2, J24 = close and J20, J21, J22 setting for the proper capacitance selection
The switches SW1, SW2, SW3, SW4, SW6 offer to the user some flexibility for the remapping of the driving signals IN_L, IPD1_L, IPD2_L, IPD3_L and OVT_L on CN5, CN8 and CN9 (see Schematic diagrams for further details).
It is also possible to evaluate a system composed of a X-NUCLEO-DOL10A1 stacked on other expansion boards.
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All features
- Based on the IPS1050LQ single low-side switch, which features:
- Operating voltage range 5.8 to 10 V
- Smart overload protection with configurable inrush and limitation levels
- 3.3 V and 5 V compatible I/O
- Very low On-state resistance (RDSON ≤ 50 mΩ)
- Fast demagnetization of inductive loads
- Junction over-temperature protections
- Over-temperature diagnostic pin
- Undervoltage lock-out
- Loss of supply / loss of ground protection
- Designed to meet IEC 61000-4-2, IEC61000-4-4, and IEC61000-4-5
- QFN32L 6x6 mm package
- Galvanic isolation between logic and process sides by STISO620 digital isolators and isolated DC-DC converter
- Selectable supply of the IPS1050LQ from 24 V supply rail, or alternatively from on board isolated dc-dc converter
- Process side supply rail reverse polarity protection by STPS1H100A
- On board high efficiency 24 V to 6 V LDO (LDO40LPURY)
- Supply rail surge pulse protection by SM15T39CA
- Digital signals for smart overload protection configuration
- Configuration for inrush current level setting
- Compatible with STM32 Nucleo development boards
- Equipped with Arduino® UNO R3 connectors
- RoHS and China RoHS compliant
- CE certified
- Based on the IPS1050LQ single low-side switch, which features:
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All resources
| Resource title | Version | Latest update |
|---|
MCSDK Board Description (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 29 Sep 2025 | 29 Sep 2025 |
Bill of Materials (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 29 Sep 2025 | 29 Sep 2025 |
Schematic Pack (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 29 Sep 2025 | 29 Sep 2025 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | WEEE Compliant | Material Declaration** |
|---|---|---|---|---|---|---|
| X-NUCLEO-DOL10A1 | Active | CARD | Industrial | Ecopack2 | Yes | |
X-NUCLEO-DOL10A1
Package:
CARDMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X-NUCLEO-DOL10A1 | | | distributors No availability of distributors reported, please contact our sales office |
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X-NUCLEO-DOL10A1 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors