A LED-Compatible Current Regulator with Integrated Electrically Adjustable Sensor

Abstract

In this letter, a high-performance electrically adjust-able current regulator is proposed on the LED-compatible AlGaN/GaN platform. The regulator features an electrical controlled gate and an integrated sensor, which could effectively feedback the cathode potential into the channel near the gate. Therefore, a large adjustable range of current regulating, more than 300 mA/mm, is achieved with a maximum ripple of 34.4 mA/mm. Compared with the conventional devices that just own sensor or p-GaN gate, the proposed regulator exhibits reasonable operation point and low current ripple in addition to the large-range electrically adjustable functionality. These features render the proposed regulator's notable potential in commercialization of high-density integrated LED components, charging stations and so on.