I have a custom board that uses the L6470 for driving step motors. All motor functions are working fine. Circuit attached. Picture attached.
What I have noticed and concerns me is that in instances where the motors are off or not even connected the chip and my 440 uF caps on the VSA and VSB run at about 125F 52C.
I have tried setting the bridges to HiZ with no effect.
Why is this happening?
What do I need to do to have the chip and caps run cool?
Thanks for your help !!!
