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RAA223181

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900V Off-Line Flyback Regulator

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Overview

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.

RAA223181 - Typical Flyback Circuit
RAA223181 - Block Diagram
RAA223181 - Pin Assignment
RAA223181 - Typical Flyback Circuit
RAA223181 - Block Diagram
RAA223181 - Pin Assignment
  • Flyback regulator with 900V 10Ω MOSFET
  • Single 400V input capacitor for input up to 450VAC
  • Frequency doubling for heavy load operation (up to 12W), with programmable duration < 100ms
  • Valley switching to reduce switching losses
  • Programmable constant frequency DCM operation (recommended range 50kHz ~100kHz)
  • Burst mode operation at light load
  • Protection features: Short-Circuit Protection (SCP), Overload Protection (OLP), Input Undervoltage Lockout (VinUV), Input OVP, VCC Overvoltage Protection (VccOV), VCC Undervoltage Lockout (VccUV) and Over-Temperature Protection (OTP)

Documentation

Featured Documentation
Type Title Date
Datasheet
RAA223181 Datasheet
PDF 2.29 MB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
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