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https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/665540/drv8332-using-external-3-3v-supply-for-drv8332
我是否可以提供DRV8332的外部3.3V至VREG引脚，而不 是在DRV8332的VDD引脚上提供12V以降低功耗？ 因为VDD用于为DRV8332内部的LDO供电，而DRV8332内部的LDO会产生3.3V电压，从而为DRV8332的内部逻辑电路供电。 此内部LDO的输入为12V，输出为3.3V，因此效率为27.5 % ，效率较差。
