1
Evaluation board objectives
1.1
What does this demoboard aim to demonstrate?
As said in the introduction, the
evaluation board allows insulated control of AC loads using
AC switches instead of relay solutions.
The board embeds a power supply to make it independent from power side.
You just have to connect mains voltage, loads and an external microcontroller.
On the smart control side, using an
board (
) with the available firmware allows
to easily configure a lot of parameters for specific load control.
1.2
STEVAL-GLA001V1 evaluation board main blocks
The
evaluation board features the following main components:
•
AC switches (X101, X102 and X103)
•
A flyback power converter providing:
–
VCC_AC: non regulated output and referenced to mains voltage (VCC_AC positive regarding
GND_AC)
◦
used to control the three AC switches
◦
maximum output current: 150 mA
–
5VDC: 5 V positive output, referenced to GND, insulated regarding mains voltage
◦
supplies the LEDs and all other electronic parts if VDD selector is set to 5V position
◦
maximum output current:
500 mA for all the secondary side (5 V, 3.3 V and VDD mixed)
–
3.3VDC: 3.3 V positive output, referenced to GND, insulated regarding mains voltage.
◦
supplies all other electronic parts if VDD selector is set to 3.3 V position.
◦
maximum output current:
500 mA for all the secondary side (5 V, 3.3 V and VDD mixed)
–
VDD: used to select whether the external microcontroller is supplied with 5 V or 3.3 V (default).
UM2304
Evaluation board objectives
UM2304
-
Rev 3
page 2/46
