TI中文支持网Part Number:BQ25504
1 我用的电池是钛酸锂电池，2.8V充满。但是实测充电只能充到2.34V，是我接的方法有问题？还是需要别的配置？
2 付我接的原理图，求大神指点！
yong zhao：
顶一下，求高手指点！
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Star Xu：
您好，Vstor是boost输出接的是系统负载，VBAT接的是可重复充电的电池。
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yong zhao：
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yong zhao：
这样的接法对吧，为啥我充电能到2.37V，过压设置在3v左右啊，这是为啥呢？？？？？？？
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Star Xu：
您好，正在查询，稍后回复。
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Star Xu：
您好，请参考下面内容。
There are 3 possibilities.
1. The load on VSTOR and VBAT (including battery leakage) is higher than the input power can support once the battery reaches 2.34V.
2. Switching noise on VSTOR is not being adequately filtered by the 0.01-0.1uF on VSTOR, thereby causing a shift in the voltage voltage. Placement of that resistor as close as possible between VSTOR and IC GND (VSS pin) is required.
3. Parasitic resistors from residual solder flux in parallel with the multi-mega ohm resistors is changing their effective value. This is explained in the datasheet layout section toward the end of the datasheet. Quickest way to check is to remove the resistors, use solder flux remover to clean the board and replace the resistors by standing them on their edge to reduce surface area for parasitic resistor connection. If this is found to be the problem, the the board assembler needs to improve its solder flux removal procedures.
