Dallas, Tex. Texas Instruments Inc. (TI) has introduced a high-efficiency, ultra-low-power step-down converter for energy harvesting and low-power applications. The TPS62120 achieves 96 percent efficiency, and can generate a 75 mA output current from an input voltage of 2 V to 15 V. The high-performance device supports energy harvesting and battery-powered applications, as well as 9-V and 12-V line-powered systems.
The TPS62120 synchronous converter features a power save mode to provide high efficiency over the entire load current range, reaching 75 percent efficiency at loads down to 100 uA, said TI. During light load operation, the device operates in a pulse frequency modulation (PFM) mode, consuming only 11 uA of quiescent current. The TPS62120 also maintains smooth, efficient operation at higher currents by transitioning automatically from its power save mode to a fixed-frequency pulse width modulation (PWM) mode, said the company.
The TPS62120 offers a voltage range from 2-V to 15-V input and the 1.2-V to 5.5-V output enables power generation for a wide range of microcontrollers, such as TI’s ultra-low power MSP430 MCUs and the CC430, TI’s single-chip MSP430 and low-power RF solution.
Availability: The TPS62120 is available in volume now from TI and its authorized distributors in an 8-pin, 3 x 3-mm SOT-23 package. The TPS62122 also is available in a 6-pin, 2 x 2-mm QFN package.
Pricing: Suggested resale price for the TPS62120 is $0.95 and $1.05 for the TPS62122 in quantities of 1,000.
Resources: TPS62120 datasheet, TI’s power and energy harvesting product portfolio, MSP430 Solar Energy Harvesting Development Tool (eZ430-RF2500-SEH), TI Power Management products, and online training for Perpetually Powered Energy Harvesting Solutions.