Charger Control - LG U8130 Service Manual

3. TECHNICAL BRIEF

3.4.10 Charger control

A programmable charger in AB2000 is used for battery charging. It is possible to set limits for the
output voltage at CHSENSE- and the output current from DCIO via the sense resistor to CHSENSE-.
The voltage at CHSENSE- and the current feed to CHSENSE- cannot be measured directly by the
GPADC. Instead, the two measuring amplifiers translate these inputs to a voltage proportional to the
input and within the range of the GPADC. Figure shows the schematic of charging control part.
Figure. Schematic of charging control part
Figure. Battery charging block diagram
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