App note: Operation evaluation of ultra low ON resistance MOSFET supporting quick charge for 1 cell Lithium ion battery protection

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ON semiconductor’s application note on faster charging of Lithium Ion batteries with consideration on heat suppression. Link here (PDF)

Currently, because LiB (Lithium Ion Battery) is superior in current density and electromotive force, it becomes mainstream of batteries for mobiles such as smart phone. However, because LiB is weak at over-charge and over-discharge, a control circuit is necessary to be used in combination with LiB. For the purpose of LiB current control, MOSFET is used.

This time, we would like to consider the operation and heat transfer of the CSP (Chip Scale Package) product, which is used for current control, with very small size and ultra-low ON resistance.

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