ON Semiconductor AND8098/D Series handbook
Update: 30 September, 2023
This application note presents a low-cost high-voltage 100 mA non-isolated power supply using NCP1052 by buck and buck-boost topology. The NCP1052 is one of the latest low-cost switching controllers with integrated 700 V/ 300 mA power switch from ON Semiconductor. It is primarily designed for isolated 10 W-range flyback converter. If isolation is not needed, the IC can also be used as stepping-down buck and buck-boost converter for further cost saving by removing optocoupler and replacing the transformer by an inductor. The output current capability is 100 mA. The possible operating range is from input range between 20 Vdc and 700 Vdc to output range of 5.0 V or above with 100 mA. Typical efficiency around 65% is obtained in the 12 V buck demo board. Advantages of the proposed circuits include: • Comparing to flyback, buck and buck-boost eliminates optocoupler and replaces transformer by an inductor for cost saving. • Buck and buck-boost offers smaller voltage stress in switches comparing to flyback. It minimizes the switching loss and increases efficiency. • NCP105x can power up itself from the high input voltage with wide range between 20 Vdc and 700 Vdc. It needs no extra supply circuit. • NCP105x operates at 44, 100, or 136 kHz and accommodates various input voltages and currents.
Brand: ON
File format: PDF
Size: 97 KB
MD5 Checksum: 4F38E85FCD869E9743F91FDFBF583A05
Publication date: 11 July, 2012
Downloads: -
PDF Link: ON Semiconductor AND8098/D Series handbook PDF