Date: 04/12/2012

Class-D amp IC from NXP for cars support high-ohmic speakers

NXP Semiconductors N.V. has announced the TDF8599C, a new automotive stereo Class-D amplifier with supply voltage range up to 48V. TDF8599C can drive quality audio into high-ohmic load speakers, which are lighter.

Other features:

· Two 8 ohms /6 ohms capable BTL channels or one 4 ohms/3 ohms 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:

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

o PLL mode to synchronize with external oscillator

o Spread spectrum mode

o Phase staggering

o Frequency hopping

· No ‘pop noise’ caused by DC output offset voltage

· I²C-bus mode:

o Load diagnostics
Speaker load, open load and shorted load
Amplifier output to ground and to supply shorts
Tweeter detection

o Thermal pre-warning diagnostic level setting

o Identification of activated protections or warnings

o 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

Availability: The product is immediately available.