Hi,

I used a gate driver from Fairchild (FAN73832) and connected it the way the datasheet shows (image 1),
and I expected that both outputs high side and low side to switch from 0V to 15V.
But when I connected the chip and measured the output, the high side output goes from -5V to 10V (level shifted).
I expected both outputs to switch between 0V and VCC (which is 15V in my case), did I make a wrong assumption
or is there is a mistake in the way I connected the circuit.
I would like both outputs (high side and low side) to switch between 0V and 15V.
how can I achieve that?

(I attached the oscilloscope images, which are taken between ground and pins 5 and 7 on the device)

 

1st question: Is the your channel AC-coupled? If it is how do you measure absolute DC voltages?

 

Hello,

Chanel 1 of the scope is DC coupled, chanel 2 is AC coupled.
Put chanel 2 on DC too and see what happens.

Bertus

 

Thank you for the reply,
I just realized that mistake
Thank you