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BQ24616 電壓與電流保護

Other Parts Discussed in Thread: BQ24616

Hi 

BQ24616規格書內有提到的 Charge Overcurrent Protection 以及 Battery Overvoltage Protection 的部分,

想請教要怎麼測試這兩點

感謝您

  • 请参考数据手册第8页 CHARGE OVER CURRENT COMPARATOR (CYCLE-BY-CYCLE)
    Battery over voltage 您可以参考数据手册 8.3.15BatteryOvervoltageProtection
  • Hi Star

    謝謝您的資訊

    另外請教是否能指點一下測試手法

    1.針對電池OVP測試手法, 電池是否用連續插拔的方式產生OVP?

    2.電池OCP 測試手法, 電池對地短路?

    感謝您
  • OCP: Look at inductor current, HIDRV, LODRV and when charge current exceeds 160%, there will be cycle by cycle OCP, where HIDRV will turn off.You can also look at SRP-SRN differential voltage instead of current, but the differential voltage range is low.

    OVP: Use a bidrectional power supply to simulate battery, and then increase battery above 104% of VFB that corresponds to battery OVP. Monitor VFB, SRN, HIDRV and LODRV to see effect of battery OVP.