Delivering up to 2 x 135 W into 4 Ohm loads, NXP’s Class-D car-audio amplifiers have extremely high dynamic audio range for maximum listening enjoyment on the move. Improving amplifier efficiency also helps designers manage in-car energy consumption as more and more features are added to deliver enhanced passenger experiences.
Automotive
Our Class-D amplifiers bring size and power advantages to in-car entertainment
- Overview
- Description
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Key features and benefits
- Advanced protections prevent audio-holes and pop noise
- High voltage technology reduces diameter and weight of cables
- Audio amplifiers with analogue inputs and (digital-inputs)
- Audiophile sound quality
- Closed loop topology supports low-cost (weak) power supplies
- Lowest power consumption
- Packages available that enable single layer PCB designs for head units and sound systems
- Pin-to-pin compatible families
- Automotive qualified AEC–Q100
- Low PPM-rates, enhanced robustness
Key applications
- CD / tuner head units
- Multi-channel amplifiers
- Aftermarket car-audio systems
Design tools & Assets
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Descriptive summary
Combining high audio quality with significantly reduced heat dissipation in the vehicle head unit, compared to traditional Class-AB amplifiers, our Class-D car radio audio amplifiers simplify thermal management, thereby trimming size and cost from high-power car audio systems. The family comprises the TDF8599A and TDF8599B, each featuring dual Bridge-Tied Load (BTL) outputs comprising a dual NDMOS-transistor output stage based on Silicon-On-Insulator (SOI) BCD MOS technology. Both devices include an I2C interface with support for up to 15 bus addresses. Operating in I2C-bus mode provides access to DC-load detection, frequency hopping, extended configuration functions and enhanced diagnostic information. Both ICs can also operate in non-I2C mode (Legacy Mode).
Further built-in features include load-dump protection and voltage stabilizers, which simplify integration into the vehicle’s electrical system to enable shorter design-in cycles and reduced system cost.
Products
| Type number | Description | Status | Quick access |
|---|---|---|---|
| TDF8530TH | I²C-bus controlled quad channel 45 W/2 Ω class-D poweramplifier with full diagnostics | Download short datasheet Order sample Buy online | |
| TDF8590TH | 2 X 80 W SE (4 Ohm) or 1 X 160 W BTL (8 Ohm) class-D amplifier | Download datasheet Order sample Buy online | |
| TDF8591TH | 2 x 100 W SE (4 Ohm) or 1 x 310 W BTL (4 Ohm) class-D amplifier | Download datasheet Order sample Buy online | |
| TDF8597TH | I²C-bus controlled dual channel 43 W/2 Ω, single channel 85 W/1 Ω class-D power amplifier with full diagnostics | Download short datasheet Order sample Buy online | |
| TDF8599ATH | I2C-bus controlled dual channel 135W/4 Ohm, single channel 250W/2 Ohm class-D power amplifier with load diagnostics | Download datasheet Order sample Buy online | |
| TDF8599BTH | I2C-bus controlled dual channel 43 W/4 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics | Download datasheet Order sample Buy online | |
| TDF8599CTH | I2C-bus controlled stereo class-D amplifier (136 W / 8 Ohm) with full diagnostics | Download short datasheet Order sample Buy online |







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