- Hardware
- Expansion modules
- XC4x
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Questions
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Current leakaje XC42/43/44
Hello, I have a current leakage problem in the XC-43 and XC-44 modules.
I am using Digital Out HS outputs to drive LED blinkers, but they don't turn off completely, there is a 5.8V voltage leakage. The flywheel diode is installed but we have had to install some power resistors in parallel to get them to switch off completely. The same problem has appeared when connecting a buzzer to Digital Out HS.
Customer support service by UserEcho
I haven't tried it myself, but it was posted recently if using a DOUT LS (instead of HS) on the MC4x or XC4x and you turn off the open load detection it will stop the leakage.
https://forum.iqan.se/communities/5/topics/3512-dout-ls-issue-with-led#comment-9101
The XC44 has 5 digital outputs without open load detect, these give a significantly lower leakage.
On XC42 and XC43, all digital out highsides have an internal pull-up used for open load detect that cause a leakage current.
Thanks for the explanation Gustav.
Hard way to find out about leakage. I have a MC42. I take 3kohms pull down to get it down