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Date of release: April 2013

Document order number: 9397 750 17410

Printed in the Netherlands

NXP’s highly integrated, high-performance Class-D amplifiers

for automotive applications bring concert-quality sound to in-

car entertainment systems.

The TDF8530, one of the latest additions to NXP’s portfolio,

is an ultra-efficient, quad-channel Class-D audio amplifier that

supports the 6 V requirement for start-stop vehicles. It enables

a rich, seamless audio experience in hybrid electric vehicles,

micro-hybrids, mild hybrids, and other energy-saving vehicles

that use start-stop systems.

The TDF8530 is optimized for use in the head-unit radio and

in sound-system platforms. It also supports new applications,

such as ambient sound systems, which generate engine sounds

in electric vehicles, and active noise-cancellation systems.

The TDF8530 is an ultra-efficient device, generating

70 W per channel at the maximum supply voltage of 24 V. It

delivers optimal sound under maximum power conditions,

offers outstanding EMC performance, and uses a thermal

fold-back, integrated in hardware, to protect the device from

overheating.

A full range of diagnostics and protections ensure full

robustness in the harsh automotive environment. Controlled

by the I2C bus, the diagnostics cover familiar functions such

as speaker protection, clip detection, and AC load tweeter

detection, and also include unique features for start-up

functions.

Block diagram