I2C-bus controlled dual channel 43W/2Ω, single channel 85W/1Ω class-D power amplifier with load diagnostics
Overview
The TDF8599 is a dual Bridge-Tied Load BTL car audio amplifier comprising an NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low power dissipation enables the TDF8599 high-efficiency, class-D amplifier to be used with a smaller heat sink than those normally used with standard class-AB amplifiers.
The TDF8599 can operate in either non-I2C-bus mode or I2C-bus mode. When in I2C-bus mode, DC load detection results and fault conditions can be easily read back from the device. Up to five I2C-bus addresses can be selected depending on the value of the external resistor connected to pins ADS and MOD.
When pin ADS is short circuited to pin AGND, the TDF8599 operates in non-I2C-bus mode. Switching between Operating mode and Mute mode in non-I2C-bus mode is only possible using pins EN and SEL_MUTE.
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## Features
* High-efficiency
* Low quiescent current
* Operating voltage from 8 V to 18 V
* Two 4 Ω/2 Ω capable BTL channels or one 1 Ω capable BTL channel
* Differential inputs
* Supports I2C-bus mode with five 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
* Parallel channel mode for high current drive capability
* Advanced clocking:
* Switchable oscillator clock source: internal for Master mode or external for Slave mode
* Spread spectrum mode
* Phase staggering
* Frequency hopping
* No pop noise caused by DC output offset voltage
## Target Applications
* I2C-bus mode:
* DC load detection
* AC load detection
* Thermal pre-warning diagnostic level setting
* Identification of activated protections or warnings
* Selectable diagnostic information available using pin DIAG and pin CLIP
* Qualified in accordance with AEC-Q100
## Features