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5V & 3V3 POWER SUPPLY BAT60 DIODES: are they critical ?

Question asked by prieur.jean on May 20, 2013
Latest reply on May 28, 2013 by Donald Becker
Hello,

I'm currently designing my own schematic based on the STM32F4DISCOVERY board.

The two BAT60 power supply protection diodes (D1 & D3) are not relevant for me because they generate a dropout voltage: +5V is in fact +4.7V and +3.3V is +3V.

I want a full +5V to supply my analog functions (based on opamps) and a full +3.3V to allow the STM32F407 to generate/convert 3.3V signals with the DAC/ADC. (my only board power supply is the USB VBUS)

Are the BAT60 really critical concerning the USB power supply protection ? I need to remove them...

Thanks !

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