Hi All
I am working on designing a system wherein module 1 is the main source driving a string of LEDs. If the module-1 fails to drive the LED strings due to any combination of the following failure, then module-2 (back-up) supply should take control and get connected to the LED strings only and not the driver-1.
Possible failures
1. 12V to module-1 is down
OR
2. Module-1 driver has a failure which its microcontroller is able to detect
Main requirements are
1. Power sources should not feed power to each other i.e. Current from module 1 shouldn't enter into module 2 and vice versa. This can be satisfied by adding a diode at the output line of each LED driver.
2. Voltage drop from driver-2 to LED strings should be as minimal as possible so we have to ensure whatever switches (transistors and MOSFET) we choose should have low on-state resistance.
I appreciate if you can share what switches need to be added to module-1 and how they should be connected.
I am working on designing a system wherein module 1 is the main source driving a string of LEDs. If the module-1 fails to drive the LED strings due to any combination of the following failure, then module-2 (back-up) supply should take control and get connected to the LED strings only and not the driver-1.
Possible failures
1. 12V to module-1 is down
OR
2. Module-1 driver has a failure which its microcontroller is able to detect
Main requirements are
1. Power sources should not feed power to each other i.e. Current from module 1 shouldn't enter into module 2 and vice versa. This can be satisfied by adding a diode at the output line of each LED driver.
2. Voltage drop from driver-2 to LED strings should be as minimal as possible so we have to ensure whatever switches (transistors and MOSFET) we choose should have low on-state resistance.
I appreciate if you can share what switches need to be added to module-1 and how they should be connected.