Fast pulse, high current laser drivers

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12176679
APP PUB NO 20210111533A1
SERIAL NO

17047509

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Abstract

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Pulsed laser drivers are disclosed comprising Gallium Nitride (GaN) power transistors for driving diode laser systems requiring high current and fast pulses, such as laser drivers for LIDAR (Light Detection and Ranging) systems. Drivers are capable of delivering pulses with peak current ≥100 A, e.g. 170 A to provide high peak power, fast pulses with nanosecond rise times and nanosecond pulse duration, for driving multi-channel laser diode arrays with 40 A per channel for 120 W output per channel for a combined peak output of 480 W. For lower duty cycle, example driver circuits are disclosed comprising a high current power transistor for direct drive with drive assist. For higher duty cycle, example resonant driver circuits are disclosed comprising two high current power transistors. Implementation of resonant driver circuits with GaN technology provides fast charging for short pulse operation at higher repetition rates or for pulse code modulation.

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Patent Owner(s)

Patent OwnerAddress
GAN SYSTEMS INC1145 INNOVATION DR OTTAWA K2K 3G8

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mousavian, Hossein Kanata, CA 8 47
Spaziani, Larry Chelmsford, US 8 67

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