High efficiency, low EMI, regulated output voltage resonant SMPS specially designed to be used with our CxD series amplifiers, such as CxD2160 and CxD250HP capable of delivering 320W with a Class D amplifier and up to 360W peak power. Ready available output voltage is +-55V. Other Output voltages in range of +-40V to +-72V can be supplied on request by choosing the custom output voltage version.
The SMPS320RxE includes the necessary auxiliary output voltages needed for CxD amplifiers, one voltage in range of 15-18V DC, at max. 200mA, and another differential voltage with value of of +-15-18V at 200mA.
The main feature of this power supply is the extremely low size, of just 100mm long, 50mm wide and just ~28mm tall, being the most compact >300W power supply available on the market and with a very good price/performance and size ratio. The Power devices are installed on a small heatsink for keeping their temperature within normal operating limits and the heatsink efficiency can be easily Increased by installing it on the enclosure wall. For operation with audio amplifiers, which have the crest factor of up to 3, the power supply does not require any extra cooling method, but if is used to supply long term continuous power over 120W extra-cooling might be required for the secondary side diodes of lower voltage versions.
The efficiency of the SMPS320RxE is over 90% for 20-100% load, and the peak efficiency reaches 94.2% for 230V mains voltage.