Overview
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.
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)
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.29 MB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
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Design & Development
Boards & Kits
Evaluation
RTKA223181DE0010BU
Active
Dual Output 6W Universal Input Flyback Evaluation Board using RAA223181
The RTKA223181DE0010BU dual output 6W universal input Flyback evaluation board, featuring the RAA223181 900V regulator, is designed to demonstrate a low-cost high performance isolated AC/DC solution from a universal input of 85Vac to 265Vac, to 13V and 5V outputs for Smart Meter applications.
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Reference Designs
AS044-EMTRPSPOC1Z
Active
Single Phase Energy Meter Power Supply Reference Design
The AS044 energy meter power supply is a 10W isolated multi-channel AC/DC flyback converter that has a special requirement to pass magnetic tampering using an iron dust core. The design is made to operate at 450V AC, and it has a capacitor saver function which will help in reducing the BOM and...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Product Options
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