Portable stereo bluetooth speaker

The utility model discloses a portable stereo bluetooth speaker, its shell are the substantially closed structure, and circuit system is located the confined shell, including MCU control module, bluetooth module, audio input module, power amplifier module, audio output module and power management module, bluetooth module, audio input module and power management module connect MCU control module, and bluetooth module is connected respectively to power amplifier module and audio input module. The utility model discloses a chip TPS61088 is as the direct current boost circuit chip in, under the by the time heavy loading condition, and work is in the PWM mode, under the light loading condition, select to work under the DFM mode, power conversion efficiency is up to 91%, and power amplifier module adopts chip TPA3130D2, has to be greater than 90% power efficiency and extremely low idle loss, need not outside radiator can provide 215W on individual layer PCB board power to control the temperature rise very effective