你好:
TPS55340
SYNC脚怎么接,Datasheet 描述如下:
SYNC 5 6 Switching frequency synchronization pin. An external clock signal can be used to set the
switching frequency between 200 kHz and 1.0 MHz. If not used, this pin should be tied to
AGND.
switching frequency between 200 kHz and 1.0 MHz. If not used, this pin should be tied to
AGND.
但workbench和后面的应用示例图中,SYNC是NC。
怎么处理,还是两种方法都可以?
Johnsin Tao:
Hi
不用同步的功能,SYNC是要接GND的。
后面的例子中SYNC有用接头连出来,在测试时应有通过外部的接头将其短接或者通过外部给同步信号的。