2X100V 500W Audio Amplifier SMPS Power Supply

| August 4, 2019 Updated
2X100V 500W Audio Amplifier SMPS Power Supply

Class D Aplifier Switch mode power supply DESIGN OF THE POWER SUPPLY The whole device is necessary to power up of several voltages. The preamp requires a symmetrical voltage 15 V, IRS2092 class d power amplifier symmetric 100V and to +12 In the against the negative branch. The desired performance of the one-hundred-volt branches for the amp is 500 Watts of power, implying the capacity of each branch current of 2.5 a. Classic transformer to the mains voltage with the amount of the secondary windings with the above mentioned voltages would have been hard to come by and custom made one piece is an expensive proposition. For these reasons, it is preferable to use switching power supply, which has also a coil or a transformer, but their retraction, and the composition is substantially easier.

UC3844 2X100V SMPS Circuit Schematic


Topology without transformer in case this work cannot be used. Galvanic connection to the network, which is typical, would complicate the interconnection of the entire device with a source of audio-signal and the implementation would only be possible for small differences in voltage, i.e. only for the power supply branch 100 Volts for the amplifier. Transformer ETD44/N87 will be because of their large size in a horizontal position. The skeleton for such a position has a similar pin layout as the integrated circuit. It also follows the numbering of the pins. Outlets are spaced so that there is it was possible to simply tap on the printed circuit board to other components without undue crossing.


As the control unit of the switching power supply is selected, the integrated circuit UC3844. This the circuit is used for applications with a fixed working frequency, adjustable by external elements. Include in a group with a very complicated internal structure, but a small number of outlets and therefore even small the number of external components. Its reference voltage is temperature compensated. It is designed for excitation of the MOSFET transistors with the capacity of control electrodes in 1 nF. The circuit has an adjustable duty cycle from 0-50%. Based but of their predecessors, which had an adjustable duty cycle from 50 to 100 %. Innovation has solved the so-called FLIP-FlOP circuit, which skips every other period. The circuit includes current and voltage protection.

100v-smps-pcb-120x120 100v-smps-pcb-2-120x120

srcb 2X100V SMPS Circuit pcb schematic all files alternative links:

FILE DOWNLOAD LINK LIST (in TXT format): LINKS-25717.zip

Published: 2016/06/20 Tags: , , ,

4 Comments “2X100V 500W Audio Amplifier SMPS Power Supply

  1. Electronics CircuitsElectronics Circuits

    400W Claas D Subwoofer Amplifier Circuit IRS2092

    IRS2092 Subwoofer 400W Claas D Amplifier Circuit.The main part of this protection circuit is a transistor FET which is connected in the power supply branch amplifier integrated circuit IRS2092. When applying a positive voltage to the control electrode of the transistor, the ground power supply voltage and the comparator halts the modulation process. The transistor FET is switched on the circuit that brings together a number of protections. One of them is check the power supply, which detects whether the supply voltage is in the range of 68 to 100 volts. If this the condition is not met, the class d protection will react. Additional protection is temperature. Circuit controls the voltage on the thermistor, which is located on the heatsink of the power switching Mosfet. Last class d amplifier protection detects the amplified audio signal at the output of the amplifier and responds when congestion or limitation.

  2. Elektronisch ProjekteElektronisch Projekte

    2X100V 500W Audio-Endstufe Schaltnetzteil

    Klasse D Schaltnetzteil Audio-Endstufe DESIGN DES Netzteil Das ganze Gerät ist notwendig, um ein power-up von mehreren Spannungen. Der Vorverstärker benötigt eine symmetrische Spannung 15 V, IRS2092 Klasse-d Endstufe, symmetrischen 100 V und +12 gegen den negativen Zweig. Die gewünschte Leistung von der ein-hundert-volt-Zweige für die amp, 500 Watt Leistung, was die Kapazität jedes Zweiges Strom von 2,5 a. Klassischen Transformator, um die Netzspannung mit der Anzahl der Sekundärwicklungen mit den oben genannten Spannungen gewesen wäre, schwer zu bekommen und maßgeschneiderte Stück ist eine teure Angelegenheit. Aus diesen Gründen ist es vorzuziehen, verwenden Schaltnetzteil, das ebenfalls eine Spule oder ein Transformator, sondern Ihren Rückzug, und die Zusammensetzung ist wesentlich einfacher.

  3. AludaAluda

    kindly give us the password for the zipped file. I wish to try out this circuit,I will be very thankful


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