DRV8308EVM: Use Back EMF instead of Hall Sensors?

Part Number: DRV8308EVM

Is it possible to use Back EMF instead of Hall sensors on the DRV8308? Perhaps a biasing circuit and comparator on each phase?

The DRV8308 seems perfect for our design, but most low-cost BLDC motors do not have Hall sensors built-in. Retrofitting Hall sensors (DRV5813) is a possibility, but not ideal.