Other Parts Discussed in Thread: DRV10970
HI
WE have a costumer that needs a driver for a small BLDC motor. WE have acquired your DRV10970 EVM board with
DRV10970 drver that fits the specification.
The settings used on EVM boards are
- HAL sensors Negative side connected to VINT/2 and with R17, R18 and R19 resitors populated
- using onbaord HPWR to VINT
- CNTMOD connected to GND – sinusoidal operation mode with 0° Hall placement
- DAA connected to VINT – 5° drive angle adjustment
- using 3xHAL configuration
- reverse rotation
We have discover that we have BEST spinning situation in this configuration, motors spins from 30Hz to 600Hz
The issue we have is the stability in the bottom range. Is is very important to have a STABLE frequency from 30 - 100Hz.
What can it be done here, because ATM the frequency is jumping in the 30Hz-40Hz on the lowest setting.
Than you for your help Joze