L6732

Device description

19/33

To avoid a huge variation of the modulator gain, the best way to synchronize two or more

devices is to make them work at the same switching frequency and, in any case, the switching

frequencies can differ for a maximum of 50% of the lowest one. If, during synchronization

between two (or more) L6732, it's important to know in advance which the master is, it's timely

to set its switching frequency at least 15% higher than the slave. Using an external clock signal

The phase shift between master and slaves is approximately 180°.

Figure 13. Synchronization: PWM Signal

Figure 14. Synchronization: Inductor Currents

SW

EXT

SW

f

f

f

⋅

≤

≤

3

,

1