BUY MC33067P https://www.utsource.net/itm/p/443565.html
HIGH PERFORMANCE ZERO VOLTAGE SWITCH RESONANT MODE CONTROLLERS
Description: The MC33067P is a high voltage, high performance, monolithic control circuit containing the primary functions required for off-line and DC-to-DC fixed frequency current mode control schemes with a minimum number of external components. Features: - High Voltage Operation: Up to 600V - Internal Start-Up Current Source - Internal Slope Compensation - Frequency Compensation - Pulse-by-Pulse Current Limiting - Under Voltage Lockout - Thermal Shutdown Applications: - Switching Regulators - Motor Control - Lighting Control - Battery Chargers - Power Supplies (For reference only)