Buck-boost converter extends battery life
Texas Instruments’ TPS63900 buck-boost DC/DC converter combines programmable input current limit and dynamic voltage scaling to double battery life. The part maintains a low quiescent current of just 75 nA with 92% efficiency at 10 μA. Further, the TPS63900 delivers up to three times more output current than competing devices to help extend the life span of battery-powered industrial and consumer electronics.
Integrated dynamic voltage scaling delivers power while keeping the system at the minimum voltage required to operate efficiently, maximizing battery life and reducing required maintenance for industrial applications. Design engineers can optimize power architectures for ultra-low-power sensors and wireless connectivity ICs, supporting applications that can operate for at least 10 years using the primary battery.
With its very low quiescent current and programmable input current limit, the TPS63900 efficiently charges supercapacitors to buffer peak loads, protect battery capacity, and extend system lifetime and performance. It also increases the stability of connected applications by reducing up to 50% of the output voltage ripple caused by load transients.
The TPS63900 has an input voltage range of 1.8 to 5.5V and an output voltage range of 1.8 to 5V resistor-programmable in 100-mV steps. Output current is 400 mA (VI ≥ 2.0V, VO = 3.6V). Offered in a 2.5×2.5-mm wafer small-outline no-lead (WSON) package, the TPS63900 costs $0.80 each in lots of 1000 units. An evaluation module is available for $49.
Texas Instruments, www.ti.com
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