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怎么避免BQ24070在电池电压波动200mv后自动关闭输出---急!!!

Other Parts Discussed in Thread: BQ24070

现在调试一款新产品,采用单电池系统升压后驱动微型打印机,现在发现在电池电量下降到70~50%时,驱动打印机时电池电压波动超过200mv,此时BQ24070自动关闭,DPPM脚上现已并联31.6K电阻与100nF电容(甚至2uf)都效果不大,在BQ24070 vout输出端加大电容(470uf)后,还是出现BQ24070  关闭现象。请提示有什么方法避免BQ24070在大电流应用下电池电压波动超过200mv时自动关闭的功能