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at 1A load, the 5V output is dropping to 4.3V
Actually even at the power supply input it is 4.3V, so maybe it’s the power supply
Does it even when connecting power supply directly to the reload, maybe power drop through wires
Ya it is, its 5v right at the power supply terminal but
Highside switched shut down the output at 2A not 2.3 or whatever
17V Power
- Power onboard + touch test, verify components and the board itself does not get too hot
- Current sense amplifier blew up when powerd
- Verify all ICs, details, LEDs, etc. are powered on successfully. Communicate with all peripherals
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R44 and R45 are 0603 and should be 0805
Change 0.1uF 10V to 50V for consistency (5V high side switched)
3.3k (r2) 0603 part number
There are 16V, 50V and 100V 1uF caps on the board
It should probably double the power rating on the current sense resistors for the 24V buck
Add label to 3v3 led
N-Ch fet description says 340mS instead of 340 mA
Add polarity indicators to terminals
STM reset button footprint is wrong, shorts itself out
Add testpoint labels where convenient
SHDN on CAN should have a test point
RST pin on microcontroller should have testpoint w label
Add clippy testpoints to all of the voltage rails
reduce the small terminal through hole size for better alignment
Both 5V rail ADC pins do not go to ADC capable pins
Current sens +/- pin name wrong
N-CH footprint is wrong
LED doens’t work
17V current sense should be supplier by 17V so it doesn’t blow up