Available to ship in volume today, the bq51020 and bq51021 single-chip receivers feature a programmable output voltage up to 8 V and low on-resistance MOSFETs to reduce power loss by as much as 50 percent, compared to existing solutions in the market.

The bq51021 features an I2C interface, which allows system designers to implement foreign object detection and a unique "pad-detect" feature that makes aligning the receiver with the charger easier for a better user experience.

Features:

－ Highest efficiency for faster, cooler wireless charging: Achieves up to 96 percent power efficiency, and an adjustable output voltage helps reduce power loss by as much as 50 percent; and reduces temperature rise by 35-percent compared to other solutions.

－ Single-chip 5-watt receivers: Provide rectification, regulation, and digital control and communications to support the Qi 1.1 specification.

－ Ultra-small, thin solutions: 3.6-mm by 2.9-mm by 0.5-mm single-chip wireless power receiver achieves a solution size of 75 mm2 without the need for an inductor.