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RAA223181 - 900V Off-Line Flyback Regulator

Description

3.

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Features

  • a unique short-time heavy load operation mode, which delivers up to 12W output power for a programmed time period. This allows the smart meter power supply to be designed at regular power level without being over-designed for 2x power in the transmission mode, which greatly reduces system cost. RAA223181 also has a cost-saving feature for the input voltage higher than 265VAC, where usually two stacked 400v electrolytic capacitors are required after the bridge rectifier. RAA223181 uses only one 4.

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Datasheet Details

Part number RAA223181
Manufacturer Renesas
File Size 2.29 MB
Description 900V Off-Line Flyback Regulator
Datasheet download datasheet RAA223181 Datasheet

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Full PDF Text Transcription

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RAA223181 900V Off-Line Flyback Regulator Datasheet The RAA223181 is an off-line Flyback regulator with a 900V integrated MOSFET, designed for high input voltage and high reliability application of smart meter power supplies and other general isolated power supplies. The RAA223181 operates in DCM with constant switching frequency at full load. The system is inherently stable with an easy feedback loop design, while switching at constant frequency without interfering the communication of the smart meter. At light load, RAA223181 enters burst mode operation to reduce the IC power consumption, while keeping the burst frequency less than 3kHz to avoid interference to the PLC frequency band.
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