Author Topic: Current Control  (Read 936 times)

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Offline Vindhyachal.takniki

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Current Control
« on: September 02, 2016, 04:27:54 pm »
1. I have to control current of a load, so that whenever load increases from 5A it should trip & second there is no reverse current.
Operating voltage is 9V to 12.6V.

2. I was looking at LTC4358, it says its ideal diode for 5A. Features in it says "0.5?s Turn-Off Time Limits Peak Fault Current".
Does that mean it will trip after peak current? What's its value in datasheet? Also will the system auto retry after fault condition?

3. Also diode minimum operating voltage is 9V, what if any case error system voltage falls below it? Will the diode shut off or LTC4358 may overheat as its internal mosfet cannot be turn on completely?
 

Offline pyroesp

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Re: Current Control
« Reply #1 on: September 03, 2016, 01:17:35 am »
1) Have a look at this : http://electronicdesign.com/power/current-limiter-offers-circuit-protection-low-voltage-drop
It's a current limiter though, not something that disconnects the input voltage. How do you want to switch off the input ? Relay ? Transistor ? ...
 

Offline Vindhyachal.takniki

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Re: Current Control
« Reply #2 on: September 05, 2016, 05:24:49 am »
How about using TPS25944A.
It gives current limit & provide reverse current protection also.
 


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