Ammar Kh Posted April 3 Share Posted April 3 Hi, I am using the Analog Discovery 2 supplies to simulate a battery voltage supply (3.6-4.2V) for a small device with low current consumption (3 - 5 mA). Now I have the scenario where a 5V is applied by the chargee and hence I have a reverse current (around 15-20 mA) to the AD2 supplies pins. I checked the AD2 reference manual and couldn't find something concrete about the capabilities of the analog supply to handle sink current. Does the AD2 supply has an internal mechanism for such a case ? . In case I want to avoid the sink current situation. I was thinking to add a resistor on the AD2 supplies output. Will that be sufficient ? Link to comment Share on other sites More sharing options...
0 attila Posted April 3 Share Posted April 3 Hi @Ammar Kh See the user supplies schematic: https://digilent.com/reference/test-and-measurement/analog-discovery-2/hardware-design-guide#user_supplies_control Link to comment Share on other sites More sharing options...
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Ammar Kh
Hi,
I am using the Analog Discovery 2 supplies to simulate a battery voltage supply (3.6-4.2V) for a small device with low current consumption (3 - 5 mA).
Now I have the scenario where a 5V is applied by the chargee and hence I have a reverse current (around 15-20 mA) to the AD2 supplies pins.
I checked the AD2 reference manual and couldn't find something concrete about the capabilities of the analog supply to handle sink current.
Does the AD2 supply has an internal mechanism for such a case ? .
In case I want to avoid the sink current situation. I was thinking to add a resistor on the AD2 supplies output. Will that be sufficient ?
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