Maximum overall output current: can I assume per-port works under full load?

kjkoster · Post by **kjkoster** » 16 Apr 2022, 10:03

Dear All,

If the data sheets states that the maximum output current for a given port is (say) 500mA, and assuming the power supply is able to provide all desired current, is it safe to assume that the data sheet is correct even if I were to load all output ports to their stated maximum current? In other words: is there a module-wide limit that reduces the stated maximum output current of a given port under certain conditions?

Kees Jan

nicolaiB · Post by **nicolaiB** » 20 Apr 2022, 09:35

Hi Kees,

which ports do you are refferering to?

Nicolai

kjkoster · Post by **kjkoster** » 21 Apr 2022, 21:13

Dear Nicolai,

Sorry I was not being clear.

Please consider the DIO module. The data sheet states that each output can supply 500mA of current in high-side mode. If I hook up al 14 output ports such that they each have to supply the full 500mA, can they or is there some other limitation?

https://revolutionpi.com/wp-content/upl ... Pi_DIO.pdf

Kees Jan

Post by **giuseppe** » 02 May 2022, 13:48

Hello Kees,

all 14 output ports can supply 500mA simultaneously, in highside mode.

If the module gets too warm, all ports are switched off. This prevents the device from being damaged.

Best regards
Giuseppe Pagano | Technical Support

kjkoster · Post by **kjkoster** » 02 May 2022, 20:57

Dear Giuseppe,

Thank you for confirming that.

Kees Jan