The LEA Control Board (LCB) is a construction kit to provide power electronic converters with a control board.
The basic module is the control board (LCB-CCB) itself. It contains a powerful dual-core processor, error latches and various predefined low-pass filters to respond to input signals. An XDS100v2 debugger is directly integrated on the board.
The docking board (LCB-CDB) is suitable for initial operation. This contains various input options (switches, buttons, potentiometers) as well as LEDs for output.
The external hardware monitor (LCB-CHW) is for viewing internal counter variables on the oscilloscope and is mainly used for troubleshooting the control board in the overall system (control board + power converter).
The pin board (LCB-CPB) is for in-circuit signal measurments by an external scope on certain pins. The test board (LCB-CTB) was developed to check all pins, PWM signals, ADCs and DACs for functionality after a new board has been completed (end of line test).
This is the main repository of the LEA Control Board (LCB) project. Due to correct PCB versioning, every single PCB is in its own repository.
- LCB-CDB-01_Dock_Board
- LCB-CHW-01_Hardware_Monitor
- LCB-ADA-01_Adapter_Board
- LCB-CPB-01_Pin_Board
- LCB-CTB-01_Test_Board
- LCB-CBB-01_Bus_Board
Symbols, footprints and 3D-models can be found in the LEA KiCad Library.
Due initially wrong selected comparators (no rail-to-rail), the comparator adapter board LCB-ADA-01 was introduced to replace the comparator.
Example LCB-CCB-01-1.0.5:
- First three letters
LCB: Parent project nameLEA Control Board - Second three letters
CCB: PCB nameControl Board - Number
01: PCB size. For future use in case of several PCB sizes - First version number
1: Major version, increases for incompatible changes - Second number
0: PCB release, increases for improved layouts - Third number
5: Schematic version, increases for component changes, but no layout changes
To open the LEA Control Board files, KiCad 8 needs to be used. Make sure that you run the latest version of KiCad.
To use this project, LEA KiCad symbols, footprints and 3D-models need to be included. Note, that both folders need to be in the same direction.
Clone the symbols, footprints and 3D-models:
git clone https://github.com/upb-lea/LEA_KiCad_Library.git
Clone this project:
https://github.com/upb-lea/LCB-CCB-01_LEA_Control_Board.git
If you are downloading the .zip-files manually, unpack them in the same direction.
The libraries are included by default, if the above mentioned folder structure was considered. Open Kicad, load one of the projects and see the libraries:
symbol editor-> Search forLEA_Symbol_Libraryfootprint editor-> Search forLEA_Footprint_Library
Please refer to this section.
Various software examples using the LEA Control Board is available and can be found in this repository. There are examples for using the hardware monitor, SPI, UART and many others.
- A stable external 3.3 V power supply must be provided, recommended by a linear regulator.
- It is recommended to use buffer-ICs for the LCB GPIOs to prevent damage on the LCB board.
- To not confuse the user, there is only one supply voltage needed. All pins of the board are save for 3.3 V. Some components can be used with higher voltage, but this would lead to confusion and may damage the board due to misunderstandings.
- A stable external 3.3 V power supply must be provided, recommended by a linear regulator. We did not decide for an internal regulator, as this regulator does not know your external load, and might be overloaded.