DRV8912-Q1EVM: Is It posible works in 5V?

Jorge Scasso Martinez

Part Number: DRV8912-Q1EVM
Other Parts Discussed in Thread: DRV8912-Q1

hi, i have two arduino, arduno due 3.3V and DRV8912-Q1EVM works good the soleonid, but with arduino atmega2560 (5V) i cant do work the solenoid, i have osciloscopy and i cant see any thing strange, sclk is in 5V and works and SDI works good in 5V to bit to bit but the DRV8912-Q1 dont do it noting. i cuted the conexion with the 3.3V and removed all resistences (R9,R10,R11,R11,R12,R13,R14,R15). with arduino due works 3.3V but with ATMEGA2560 doesnt work. any idea? i need that DRV8912-Q1 works in 5V. Thank you.

over 4 years ago

0 Michael Erdahl over 4 years ago

TI__Genius 13505 points

Hi,

Be sure to you are replacing the 3.3V logic connections on the DRV8912 to the 5V logic on your Arduino, and have a common ground. Supply 5V to VDD and pull up nFAULT through a 10K ohm resistor to 5V as well.

Regards,
Mike

0 Jorge Scasso Martinez over 4 years ago in reply to Michael Erdahl

Prodigy 40 points

Hi mike, yes i had remplaced logic conections, the solenoid works only one time in 5V, (in 3.3V works always), only when i upload the code to the arduino serial port, the instruccions is in one bucle like this

void loop() {
Serial.println("Close");
SPI.transfer16(0x0809);
delay(200);

SPI.transfer16(0x0800);

delay(2000);
SPI.transfer16(0x0806);
Serial.println("OPEN");

delay(200);

SPI.transfer16(0x0800);
delay(2000);
}

im going to buy a logic conversor bidirectional 3.3V - 5V to SPI conections.

0 Michael Erdahl over 4 years ago in reply to Jorge Scasso Martinez

TI__Genius 13505 points

Hi,

A couple things you can try:

1) measure the nFAULT pin. This should have a pull-up installed to your logic supply. Verify this is not being driven low by the DRV8912, indicating a fault.

2) after writing to a SPI register, try reading back the value to ensure the SPI communications is working.

Regards,
Mike

0 Michael Erdahl over 4 years ago in reply to Michael Erdahl

TI__Genius 13505 points

Hi Jorge,

Were you able to resolve your issue?

Regards,
Mike

Motor drivers

Motor drivers forum

DRV8912-Q1EVM: Is It posible works in 5V?