我的硬件同事在PCB板上未加入C(bulk)电容和C(bst)。现在I2C通信正常,但SW,BST引脚电压都不到5V。
原理图如下:
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您好 TI提供了参考电路,按照下方Piezo Haptic Driver电路修改,不要漏掉元器件(电容)或者变更电路结构(FB那里),重新进行测试。 www.ti.com.cn/.../tidrcf2a.pdf