NXP Releases Unique Class-D Amplifier Pushing Car Stereo Sound Into New Dimensions

5th September 2012
ES Admin
NXP Semiconductors N.V today announced the TDF8599C, a new automotive stereo Class-D amplifier which targets sound systems in premium cars where high power output and efficiency are required. The device offers a supply voltage range up to 48V. This enables extremely high output power and the flexibility for sound designers to drive high-ohmic load speakers. Such speakers can be lighter, smaller and more cost efficient, resulting in vibrant automotive sound for the best sensory experience in the car.
With its audiophile-quality sound, the extremely robust TDF8599C Class-D amplifier is specifically designed for automotive applications. The solution is energy efficient and environmentally friendly as it produces little waste heat. With potent 48V sound power, the amplifiers allow high supply voltages enabling designers to increase the impedance of the load speakers at high output power. High impedance of the speakers enables compact speaker design, saving weight and cable diameters.

Features and Benefits


Low quiescent current

Operating voltage from 8 V to 48 V

Two 8 Ω/6 Ω capable BTL channels or one 4 Ω/3 Ω capable BTL channel

Differential inputs

Fast-mode I²C-bus

I²C-bus mode with 15 I²C-bus addresses or non-I²C-bus mode operation

Clip detect

Independent short-circuit protection for each channel

Advanced short circuit protection for load, GND and supply

Load dump protection

Thermal foldback and thermal protection

DC offset protection

Selectable AD or BD modulation

Advanced clocking: Switchable oscillator clock source: internal for Master mode or external for Slave mode

PLL mode to synchronize with external oscillator

Spread spectrum mode

Phase staggering

Frequency hopping

No ‘pop noise’ caused by DC output offset voltage

I²C-bus mode: Load diagnostics

Speaker load, open load and shorted load

Amplifier output to ground and to supply shorts

Tweeter detection

Thermal pre-warning diagnostic level setting

Identification of activated protections or warnings

Selectable diagnostic information available using pins DIAG and CLIP

Selectable gain 32 dB/26 dB (32 dB in non-I²C-bus mode)

Qualified in accordance with AEC-Q100


TDF8599C product information page.

NXP driving innovation, driving efficiency.


The product is immediately available.

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