Charger reference design is introduced to meet GaN demand

Targeting the consumer electronics market, a reference design for a high power density 65W quasi resonant (QR) charger has been released by GaN Systems. It is intended to meet the demand for GaN chargers for mobile phone and laptop computer applications.

The reference design is simple to implement, says GaN Systems, because it is supplied with an operating charger and design documentation. GaN Systems says that the 65W QR reference design will enable power system designers to develop industry-leading, high performance charging solutions and that customers will benefit from fewer redesigns, fewer PCB respins, and fewer trips to the lab for testing. The decrease development time enables companies accelerate the time to market for new products.

Consumer demand for smaller, lighter, more energy efficient, and faster charging devices has popularised GaN technology due to its attributes such as extremely high switching speed, low on-resistance, and zero reverse recovery.

This GaN-based reference design exceeds many designs, claims GaN Systems, and is a better alternative to multi-chip, monolithic solution, and other discrete solutions.

The reference design has 90 to 265V, 50/60Hz input with output via USB-C of 5.0V, 3.0A, 9.0V, 3.0A, 12V, 3.0A, 15V 3.0A, 20V, 3.25A and 65W max. Power density (with case) is 18.5W per inch3.

The reference design has over-voltage, over-current, short circuit and open loop protection.

It is certified to CISPR22 Conduction and Radiation Class B for EMI.

GaN Systems specialises in GaN power semiconductors and claims to have the largest portfolio of transistors to address the needs of today’s most demanding industries including consumer electronics, data centre servers, renewable energy systems, industrial motors, and automotive drivetrain.

The company says its award-winning products provide system design opportunities free from the limitations of yesterday’s silicon. By changing the rules of transistor performance, GaN Systems claims to be enabling power conversion companies to revolutionise their industries. 

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