SLVSBW9C April 2013 – December 2015 DRV8832-Q1
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The motor voltage to use will depend on the ratings of the motor selected and the desired RPM. A higher voltage spins a brushed DC motor faster with the same PWM duty cycle applied to the power FETs. A higher voltage also increases the rate of current change through the inductive motor windings.
For the DRV8832-Q1, TI recommends to set a motor voltage at the lowest system VCC. This will maintain a constant RPM across varying VCC conditions.
For example if the VCC voltage can vary from 4.5V to 5.5V, setting the VSET voltage to 1.125 V will compensate for power supply variation. The DRV8832-Q1 will set the motor voltage at 4.5 V, even if VCC is 5.5 V.