IC Top222YN

IC Top222YN

IC TOP222YN – Power Integrations Offline PWM Switching IC of IC Top222YN

IC TOP222YN is a high-performance three-terminal offline PWM switch IC from Power Integrations, widely used in SMPS power supplies, LED drivers, TV power boards, chargers, adapters, and industrial control circuits. This intelligent power management IC combines a high-voltage power MOSFET, PWM controller, startup circuit, thermal protection, and current limiting in a single compact package, making it an ideal choice for reliable and efficient power supply designs. It is part of the trusted TOPSwitch-II series and is known for stable switching performance in flyback, buck, boost, and forward converter topologies.

The TOP222YN IC supports high efficiency up to 90%, helping reduce heat generation and power loss in electronic devices. Its built-in auto-restart, overload protection, and latching thermal shutdown improve safety and protect connected components from failure during voltage fluctuations or overload conditions. These features make it highly suitable for LCD/LED TVs, computer monitors, DVD players, audio amplifiers, printers, home appliances, and industrial automation boards.

This IC comes in a TO-220 package, allowing easy mounting and effective heat dissipation. Repair technicians and electronics engineers commonly use the TOP222YN PWM controller IC for repairing faulty power supply boards, dead TV power sections, adapter circuits, and standby supply modules. Because of its integrated design, it reduces external component count and simplifies circuit layout, saving both cost and board space.

Key Features of IC TOP222YN of IC Top222YN

• Three-terminal offline PWM switch
• Built-in high-voltage MOSFET
• High efficiency up to 90%
• Auto-restart and current limiting
• Thermal shutdown protection
• TO-220 package
• Low external component count
• Ideal for SMPS repair and new designs
• Suitable for flyback and buck converters

Common Uses of IC Top222YN

• LED / LCD TV power supply boards
• AC-DC adapters
• Mobile chargers
• DVD player power boards
• Industrial SMPS circuits
• Audio amplifier supplies
• Home appliance control boards

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