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UC2843环路设计

Other Parts Discussed in Thread: LM3481, UC2843, UC3842

在TI的电源管理芯片设计时,例如LM3481,会根据内部的FB引脚与COMP引脚之间的放大器进行补偿设计,此时用到了数据手册中的运放跨导gm参数。

但在UC2843设计时,没有找到跨导这个参数。咨询了英文版的ete,给出的答案是: The error amplifier within UC2843 is not a transconductance amplifier. UC2843 uses a conventional operational amplifier which needs compensation connected from the amplifier output to the inverting input pin of the amplifier.这两种运放有什么区别啊?关于环路设计时,会产生什么差异呢?