11. Adjustable EVB Current Limit
For additional safety, the Si3406 has an adjustable EVB current limit feature. The EVB current limit through the ISNS pin measures the
voltage on R
SENSE
. When V
RSENSE
= -270 mV (referenced to Vss), the current limit circuit restarts the circuit to protect the application.
The EVB current limit for this Class 3 application can be calculated with the following formula:
R
SENSE
= 0.62
Ω
I
LIMIT
=
270
mV
0.62
Ω
= 435
mA
Equation 1. EVB Current Limit
UG332: Class 3 Non-Isolated Evaluation Board for the Si3406
Adjustable EVB Current Limit
silabs.com
| Building a more connected world.
Rev. 0.1 | 13
