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Features

  • 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)

Description

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.

Parameters

Attributes Value
Topology Characteristic Flyback or Forward (two switch)
Control Mode DCM
UVLO Rising (V) 12
UVLO Falling (V) 5.5
VBIAS (Max) (V) 18
PWMs (#) 1
Output Power Max (W) 12
Switching Frequency (KHz) -
Controller / Integrated Integrated
Advanced Features CapSaver, Peak Power
Temp. Range (°C) -40 to +125°C
Qualification Level Standard

Package Options

Pkg. Type Pkg. Dimensions (mm) Lead Count (#) Pitch (mm)
SOICN 9.9 x 3.9 x 1.25 13 1.3

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Additional Applications

  • Smart Meter
  • Large appliances
  • Industry control

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