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Highly efficient I2C controlled boost-mode battery charger

Technology Cover
Post Date: 2019-06-30
Texas Instruments bq25887 I2C controlled boost mode battery charger is a highly integrated 2A boost switch mode battery charge management device for 2 (2S) lithium-ion and lithium polymer batteries. The device has I sup 2 / s up C control with battery balancing, but no OTG and no power path. The device has a battery balancing function that can charge a 2S battery via a 5V USB adapter. Unlike traditional battery pack battery balancing, the integrated battery balancing function allows the charger to balance the voltage of two batteries during a charging cycle. This device is an efficient 2A, 1.5MHz switch-mode boost charger with input current optimizer that maximizes input power without overloading the adapter. The device also integrates a 16-bit ADC for system monitoring. High integration integrates all MOSFETs, current sensing and loop compensation. Typical applications include electronic cigarette and drone payload control.

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