TOP249YN Offline Switching Regulator IC (TO 220 6, TOPSwitch GX)

The TOP249YN is an integrated offline switching power supply controller from Power Integrations, designed for efficient AC to DC power conversion. It combines a high voltage power MOSFET with control circuitry, oscillator, feedback processing, and protection functions in a single device. Its integrated design helps reduce external component count and supports isolated flyback power supply applications.

Key Features -

• Integrated high voltage power MOSFET and PWM controller

• Designed for offline AC to DC power conversion

• Integrated oscillator and feedback control circuitry

• Frequency jittering to help reduce electromagnetic interference

• Overload and overtemperature protection

• Voltage monitoring and fault protection functions

• Supports isolated flyback power supply designs

• Integrated soft start and fault response functions

Specifications -

• Part Number: TOP249YN

• Manufacturer: Power Integrations

• IC Type: Offline Switching Regulator

• Product Family: TOPSwitch GX

• Package: TO 220 6

• Switching Topology: Flyback

• Integrated Switching Device: High voltage power MOSFET

• Control Method: Pulse Width Modulation

• Input Supply: Designed for offline power supply applications

• Output Voltage: Determined by the external transformer and feedback circuit

• Power Capability: Depends on input voltage, circuit topology, thermal design, and manufacturer design guidelines

• Protection: Overload, overtemperature, and voltage related protection functions

Applications -

• AC to DC switching power supplies

• Isolated flyback converters

• Consumer electronic power adapters

• Industrial auxiliary power supplies

• Standby power supplies

• Battery charger power stages

• Embedded system power supplies