Quasi-Resonant type AC/DC converter ICBD768xFJ-LB series Quasi-Resonant converter Technical Design 24V / 1A( SIC TO-3PFM SCT2H12NZ)
This application note describes the design of Quasi-Resonant converters using ROHM’s AC/DC converter IC BD768xFJ-LB series devices. It explains the selection of external components and PCB layout guidelines.
The BD768xFJ-LB series are Quasi-Resonant switching AC/DC converter for driving SiC (Silicon Carbide)–MOSFET. Using external switching MOSFET and current detection resistors provides a lot of flexibility in the design. Power efficiency is improved by the burst function and the reduction of switching frequency under light load conditions. This is the product that guarantees long time support in the Industrial market.
Key features:
●Quasi-resonant method（Maximum frequency control 120kHz）/Current mode.
●Low power when load is light ( Burst operation) / Frequency reduction function.
●VCC pin : under voltage protection / over voltage protection.
●Leading-Edge-Blanking function.
●Over-current protection (cycle-by-cycle).
●ZT trigger mask function.
●ZT Over voltage protection.
●AC voltage correction function.
●Soft start.
●Brown IN/OUT function.
●Gate Clamp circuit.
●MASK Function.
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BD768xFJ-LB 、 BD7682FJ 、 BD7683FJ 、 BD7684FJ 、 BD7685FJ |
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Quasi-Resonant type AC/DC converter IC 、 Quasi-Resonant converter |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2016.04.06 |
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Rev.A |
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2.8 MB |
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