參數(shù)資料
型號(hào): L6732TR
廠商: 意法半導(dǎo)體
英文描述: Adjustable step-down controller with synchronous rectification
中文描述: 可調(diào)式降壓同步整流控制器
文件頁數(shù): 19/33頁
文件大小: 735K
代理商: L6732TR
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
(f
EXT
) to synchronize one or more devices that are working at a different switching frequency
(f
SW
) it is recommended to follow the below formula:
3
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
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