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使用TPS61194调试背光，需要27V/320mA，可以点亮背光，但是一亮一暗背光闪烁，请帮忙分析下，谢谢
需要27V/320mA：4串灯，每串9颗，一共是4*80=320mA，调节输出电压，按照规格书公式计算，电压为37V，实际测试Vled 在28V到31V之间按照大概330MHZ的频率跳动。
