OPA564做恒流源驱动LD时,输出VOUT和TFLAG、IFLAG都发生震荡,VOUT输出成了方波。且发现震荡和RSET的值相关。这个可以断定不是散热引起的,想请问下排查的方向,谢谢!
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OPA564做恒流源驱动LD时,输出VOUT和TFLAG、IFLAG都发生震荡,VOUT输出成了方波。且发现震荡和RSET的值相关。这个可以断定不是散热引起的,想请问下排查的方向,谢谢!
在输出200ma以上的电流时,IFLAG固定频率高低变化,大约600KHz