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BOS1901-KIT
User Guide
9
Hardware
The purpose of this section is to provide information on the hardware design of the BOS1901-KIT PCB
to help the integrator evaluate BOS1901 and to use it in a prototype.
9.1
Design Overview
The board is composed of two distinct sections: a microcontroller section on the left and a BOS1901
driver section on the right. Each section is clearly demarcated by dotted line which allows to physically
separate the two sections if needed. It is for this reason that the terms breakable section or breakable
board are sometimes used to identify the right section of the PCB.
By default, the BOS1901-KIT power supply is supplied by the USB port. However, the hardware design
allows for partial or complete electrical isolation of the microcontroller section from the driver section.
This is made possible by the presence level shifter circuit on the SPI and GPIO, an external supply
connector to power the BOS1901 driver section and a series of solder bridges that can be populated or
unpopulated with resistance to do the configuration.
Figure 18: BOS1901-KIT PCB overview
BT001DDK04.01 – Issue 1
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