TOP250YN Power Management chip

Description:

The TOP250YN is an integrated offline switcher IC designed for low-power AC-DC power conversion applications. It integrates a 700 V power MOSFET, high-voltage switched current source, and control circuits into a single package. This IC operates in a primary-side regulated (PSR) topology, providing accurate output voltage regulation without the need for an optocoupler or secondary-side feedback circuitry. It is suitable for applications requiring highly efficient power conversion with minimal external components.

Key Features:

• Integrated 700 V MOSFET
• Primary-side regulation (PSR) for simplified design
• Precision internal reference for accurate output voltage regulation
• Frequency jittering reduces EMI emissions
• Auto-restart protection for overvoltage, overcurrent, and overtemperature conditions
• Built-in soft-start function for controlled startup
• Low standby power consumption
• Cycle-by-cycle current limit

Technical Specifications:

• Package Type: 7-pin TO-220
• Supply Voltage (VCC): 10V to 24V
• Maximum Operating Voltage (VMAX): 700 V
• Maximum Output Power: Typically up to 35 W (depending on application)
• Frequency Range: 50 kHz to 100 kHz
• Maximum Duty Cycle: 75%
• Operating Temperature Range: -40°C to +125°C

Applications:

• AC-DC power supplies for chargers and adapters
• LED lighting drivers
• Industrial power supplies
• Household appliances
• Audio and video equipment

Datasheet: For detailed technical information, refer to the TOP250YN datasheet.