Texas Instruments (TI) has introduced the industry’s smallest buck-boost battery charger integrated circuits, which integrate power-path management for maximum power density and universal and fast charging at up to 97% efficiency.
The BQ25790 and BQ25792 support efficient charging and 10 times lower quiescent current through USB Type-C™ and USB Power Delivery (PD) ports in small personal electronics, portable medical devices and building automation applications.
Deliver ultra-fast charging in wired, wireless or on-the-go adapters
The BQ25790 and BQ25792 offer the flexibility to charge batteries with one to four cells in a series and up to 5 A of charging current across the full input-voltage range (3.6 V to 24 V) for USB Type-C and USB PD applications. The chargers’ integrated dual-input selector supports multiple power sources, including wireless, USB, barrel jack and solar charging, while delivering fast charging – 97% efficiency at 30 W.
Universal charging enables portable medical devices, such as blood-pressure monitors and low-power continuous positive airway pressure (CPAP) machines, to charge from car adapters or USB-PD adapters, bringing a new level of flexibility and convenience to portable medical devices. On-the-go (OTG) charging is supported with a bi-directional operation for forward and reverse charging.
Design smaller, more powerful applications with 50% greater power density
The chargers deliver 155 mW/mm2 (100 W/in2) of power – up to two times more than competitive devices. Helping engineers reduce solution size and bill of materials (BOM), the new buck-boost chargers are the industry’s first to fully integrate the following components: switching metal-oxide semiconductor field-effect transistors (MOSFETs), a battery FET, current-sensing circuits and a dual-input selector. The reduction in component count is particularly valuable for applications such as smart speakers, which are shrinking in size and cost as market adoption increases.