Associate
December 2, 2017
Question
Problem with the H-Bridge VNH5180
- December 2, 2017
- 1 reply
- 1517 views
Posted on December 02, 2017 at 12:18
I having traouble with the H-Bridge 'VNH5180A'. I tried to find the problem now for some days, but I wasn't able to find it.
The H-Bridge haven't the right output voltage.
At the Pins of the Bridge are these voltages. I measured them with an oscilloscope:
designation
Voltage before the resistors
Voltage at the pins of the H-Bridge
CS
0
0
CS_DIS
0
0
EN_A
5
5
IN_A
0
0
EN_B
5
5
IN_B
3,3
3,3
OUT A | Motor1
DutyCycle 50% | 8 kHz | 0-0,5V
DutyCycle 50% | 8 kHz | 0-0,5V
OUT B | Motor2
12
12
PWM
DutyCycle 50% | 8kHz | 3,3V
DutyCycle 50% | 8kHz | 0-3,3V
Vcc
12
12
Attached is a picture of my layout, of the datasheet from the H-Bridge and an Osziloscop picture of the H-Bridge output Out_A -Out_B.
Thanks for your help in advance.
#vnh5180 #h-bridge #h-bridge