Datasheet

Power bridges L6460
64/139 Doc ID 17713 Rev 1
side power MOS for the whole off time. In fast decay mode the current is recirculated
through the high and low side power MOS opposite respect to those forcing current to
increase. Mixed decay mode is a selectable mix of the previous two modes (fast decay
followed by slow decay) and allows the user to find the best trade off between load current
ripple and fast current levels transition. Additionally, by setting the
SeqMixedOnlyInDecreasingPh bit in the StpCfg1 register, the user can choose to apply the
fast decay percentage in mixed mode always or only when the current is decreasing (i.e
from 90° to 180° and from 270° to 360° of the sinusoidal wave).
By using SPI interface the user can choose:
● Control type (external firmware control, half step, normal drive, wave drive, micro-step).
● Up to 16 current levels (quasi-sinusoidal increments) for each bridge.
● Current direction.
● Decay mode.
● Blanking time.
● Off time (32 values from 2µs to 64µs).
● Percentage of fast decay respect to toff (when in mixed decay mode).