Compact AC/DC modules from ROHM. Reference data
Encyclopedia of radio electronics and electrical engineering / Application of microcircuits
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ROHM (Japan) introduces power modules on the market of electronic components based on the most advanced technology of large-scale integration - LSI (Large Scale Integration). This method allows you to combine on one chip a variety of blocks made according to different technological processes.
AC/DC converters, the BP50XX-XX series, manufactured by this company, are connected via a rectifier to the network and generate constant voltages at the output: 5, 12, 15 and 24 V. At the same time, only a few external components are required to connect them.
The use of ROHM integrated AC/DC modules opens up additional possibilities in the development of lightweight compact devices. The most attractive features of the new products are small size, high efficiency and stable parameters. The maximum conversion frequency of the modules approaches 45 kHz. It should be noted that these modules do not have galvanic isolation.
The AC/DC converter selection diagram is shown in fig. one.
Rice. 1. ROHM AC/DC Converter Selection Diagram
Typical switching circuits, pin assignment and overall dimensions of the converters are shown in fig. 2 and 3.
Rice. 2. Typical wiring diagrams and pin assignments of ROHM AC/DC converters
Rice. 3. Overall dimensions of ROHM AC/DC converters
Fields of application of the modules - power circuits for control systems of vacuum cleaners, refrigerators, washing machines, air conditioners, irons, lighting devices, as well as power circuits for gas leakage sensors and other industrial products. As an example of the use of these modules in Fig. 4 shows the power supply circuit of a vacuum cleaner with a DC motor.
Rice. 4. Using the BP5085-15 chip to power the vacuum cleaner
More detailed information on these products is available on the website of Rainbow Technologies - rtcs.ru, the official distributor of ROHM products in Russia.
Publication: cxem.net
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