Class-D amplifiers for portable devices are typically specified for supply voltage range ideal for use with lithium batteries [1-4]. The high efficiency of Class-D amplifiers makes them ideal for operation from boosted supplies. Moreover, in order to provide a better user experience in all multi-media applications, the new smart-phones and tablets are demanding for output peak power of higher than 2W on 8Ω integrated speakers. In addition, new speakers can achieve better linearity and sensitivity leading to lower THD and noise specification for the amplifier.
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