Hello all,
I have a network of IoT sensors that all get power from a PSU. Let’s assume that the PSU is providing 14V.
I have two requirements. First, I want to provide different voltage to each sensor. As you can see below one of the sensors requires 12V as input voltage, the other 12,5V and the third 10V.
Second, I need short circuit protection on the sensor level. That means that if for some reason the power is short circuited at the sensor circuit, this short circuit must be isolated from the rest of the network. In other words, the rest of the sensors should still have power.
I am providing you the diagram below to make things clear.
In order to solve this, I have used three DFR0205 buck DC to DC Power Modules but I failed big time. Of course I provided to each sensor the correct voltage but when I short circuited one of the IoT sensors all of them lost power. So, although the DFR0205 protects the circuit from shortcut, it somehow propagates this back to the PSU and the PSU shuts down.
So my questions is simple. Which module should I use for each of the three blue boxes? Any suggestions?
Thank you.
I have a network of IoT sensors that all get power from a PSU. Let’s assume that the PSU is providing 14V.
I have two requirements. First, I want to provide different voltage to each sensor. As you can see below one of the sensors requires 12V as input voltage, the other 12,5V and the third 10V.
Second, I need short circuit protection on the sensor level. That means that if for some reason the power is short circuited at the sensor circuit, this short circuit must be isolated from the rest of the network. In other words, the rest of the sensors should still have power.
I am providing you the diagram below to make things clear.
In order to solve this, I have used three DFR0205 buck DC to DC Power Modules but I failed big time. Of course I provided to each sensor the correct voltage but when I short circuited one of the IoT sensors all of them lost power. So, although the DFR0205 protects the circuit from shortcut, it somehow propagates this back to the PSU and the PSU shuts down.
So my questions is simple. Which module should I use for each of the three blue boxes? Any suggestions?
Thank you.