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给CC3220配供电模块的选择问题,LDO还是DCDC

 我是用20V的电池供电,DCDC可以一片芯片搞定,而且效率也可以,但是担心DCDC芯片的干扰问题(板子小,很静),另外使用LDO的话电压差距大(20到3.3V),效率很低,影响续航,当然也可以考虑再做一块小板,先把电压降下来,放在电池侧,里wifi芯片远,但是这样的话会多一块板,不是最优方案。

需要确定一个问题,DCDC的开关频率辐射,会干扰wifi的通讯吗?

另外给CC3220模块供电,0.6A的电源模块够吗?

谢谢。

  • 这是CC3220的电压要求,其他电源类问题请发布到电源板块:

    – Integrated DC/DC Converters Support a Wide Range of Supply Voltage:
    – VBAT Wide-Voltage Mode: 2.1 V to 3.6 V
    – VIO is Always Tied With VBAT
    – Preregulated 1.85-V Mode