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LM3409HV IC T恒流精度一致性问题

Other Parts Discussed in Thread: LM3409

用TI的LM3409 Demo板测试,板上面是22UH的贴片电感,我更换了两只12*12MM的贴片电感(22UH),用电桥实测21UH23UH,分别装上 Demo板上,输入电压为45V,输出电压为29.5V,输出电流为925MA(21UH)950MA(23UH),附件为波形图。两个贴片电感基本一致,但输出的电流就相差比较大,如果批量生产的话,就很难保证电流的一致性,求指导。