开关电源一定会带来纹波。。

其他的方案可以看看AD8451  ADP2291

http://www.analog.com/cn/products/application-specific/industrial/industrial-battery-manufacturing/ad8451.html

http://www.analog.com/cn/products/power-management/battery-management/battery-charger-ic.html

PDF

Please refer on the attached file

Compensator Design for a Battery Charge/Discharge Unit Using the AD8450 or the AD8451

AD8450/AD8451和ADP1972/ADP1974

应该不算latest方案了的吧？AD8452集成度更高，不过公开的资料，尚不多。

http://www.analog.com/cn/products/application-specific/industrial/industrial-battery-manufacturing/ad8452.html

There is not an evaluation board containing both the AD8451 and ADP1972.

There is an AD8450/ADP1972 Battery Testing and Formation Evaluation Board that may be made available for evaluation by contacting your local Analog Devices Sales Office.  An informative…

Yes, you are right.

Better to use the circuit with less components.

Except 6V, any other problems?

My concern is that : AD8451 is a single power rail part; Can it will work properly in this circuit?

Many thanks.