A very high power and efficiency 100w power amplifier electronic project can be designed using the STK404 audio power amplifier hybrid ICs that consist of optimally-designed discrete component power amplifier circuits that have been miniaturized using SANYO’s unique insulated metal substrate technology (IMST).
STK404 power audio IC is pin to pin compatible with some other STK series power amplifiers ranging from 45W to 180W (10%/1kHz) .
This audio power amplifier use the STK404-130S audio IC that will provide a maximum of 100 watt output power on a 6 ohms load with 0.4% THD . Using the same IC , can be obtained an output power of 150 watts with 10% THD.
The STK404-130S power audio IC supports a maximum input DC voltage of 64 volts , but typically is recommended a 45 volt dual ( +/-) power supply.
Like other audio amplifiers electronic projects , this high power 100w power amplifier circuit require a very well filtered DC power supply .
Because of the power dissipation , the STK404-130S hybrid audio power IC must be mounted on a heatsink . Therefore, the thermal resistance that satisfies all requirements of these power audio amplifier (for a guaranteed ambient temperature of 50°C) is 1.48°C/W.
