AD8450/ ADP1972 Battery Testing and Formation Evaluation Board

Hi,

I can help.  Which specific battery chemistry are you using?  Can you share your schematic, or at least the portion where battery voltage and current is sensed including the AD8450?  Thanks.

Cheers,

George

Hello,

            I want to use the AD8450/ ADP1972 Battery Testing and Formation Evaluation Board. The details of the circuit are available at EVAL-AD8450 Evaluation Board | Analog Devices . But I am not sure about how to use the same system for Li-Ion rechargeable 5V, 4A battery testing.If you can please help on this.

Hi,

Please refer to Figure 53 in the AD8450 Rev B datasheet.  The Iset and Vset equations (to set Current and Voltage targets) are in the "CC and CV Loop Filter Amplifiers" section on page 25 and on page 31 in "Battery Current and Voltage Control Inputs (ISET and VSET)" section.  The Iset and Vset depend on the gains of the programmable gain instrumentation and difference amplifiers, respectively.  These amplifiers are described in the "Theory of Operations" section starting on page 21.  Tables 5 and 6 show the different possible PGIA and PGDA gains.   The MODE pin selects between charging and discharging modes of operation.

I hope this helps. 

Cheers,

George

Hi,

Thank you for your help.

Regards,

Ashwini