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) | 50 - 100 |
| 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 |
Application Block Diagrams
 | High-Power 10.5kW Motor Control The high-power motor control system supports 10.5kW with efficient MCU management and flexible connections. |
 | 400V/2kW Synchronous Motor Controller with HMI Controller 400V/2kW synchronous motor controller paired with industrial HMI controller and AC/DC power supply. |
 | 500W Onboard Battery Charger for 2-Wheeler EV High-efficiency AC/DC battery charger with GaN FETs and MCU for CAN communication and battery health. |
 | Residential AFCI Circuit Breaker AFCI circuit breaker system with Wi-Fi and AI detects arcs to prevent fires. |
 | Smart Thermostat IoT-enabled smart thermostat offers remote monitoring, and energy efficiency, and supports rapid prototyping tools. |
 | Robot Vacuum Cleaner This smart robot vacuum features environment mapping, anti-drop, obstacle detection, auto-recharge, app control. |
 | Heat Pump Control System This heat pump system features motor control MCU, PLC, and Wi-Fi connectivity for optimized performance. |
 | Pure Sine Wave Home Inverter with BMS The high-performance sine wave home inverter system provides stable power, reduces costs, and ensures flexibility. |
 | High-Efficiency Induction Heaters High-efficiency induction technology for rapid, uniform heating with energy-saving features. |
 | Battery Formation and Testing System Renesas' 32-bit MCU enables bi-directional power conversion, accurate battery measurement, and control. |
Additional Applications
- Smart Meter
- Large appliances
- Industry control