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UCC256404: UCC256404-RVCC引脚未有输出

Part Number: UCC256404

sir,

使用 UCC256404 LLC控制谐振器时,在芯片1脚供 DC20V(满足PDF要求,)、VCC额外供15V的条件下,RVCC输出0V,请解惑。(其余引脚输入与PDF参数均已对比过)

谢谢。