In the design of portable and battery-powered audio devices for consumer speaker applications, key criteria are to maximise battery playback time while maintaining audio performance in a compact form and low system cost.
Power
Batteries are thin and compact for IoT devices
Think and compact lithium-ion rechargeable batteries from NGK Insulators, are heat resistant, being able to withstand temperatures of up to 105 degrees C.
24V MOSFET protects battery circuits in wireless earphones
A 24V MOSFET developed by Magnachip Semiconductor addresses the goal of battery designers for long battery life after a quick charge by reducing conduction loss.
NFC charging transmitter offers high output for small consumer devices
Panthronics has increased system efficiency by 18 per cent in its transmitter design for the PTX130WNFC charging transmitter. It is claimed to be the industry’s highest output power for faster NFC charging. It is based on sine wave architecture to offer simpler antenna matching, a smaller bill of materials (BoM) and high tolerance of antenna misalignment.
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