POWER INTEGRATIONS AC/DC Off-Line Switcher IC, TOPSwitch-HX, Flyback, SIP-7 - 4.08A 119W

The POWER INTEGRATIONS TOPSwitch-HX Series represents a cost-effective, highly integrated off-line switcher solution, combining a 700V power MOSFET, high-voltage switched current source, PWM control, and comprehensive fault protection into a single monolithic chip. This advanced EcoSmart™ technology delivers exceptional energy efficiency across the entire load range, consuming less than 200mW at 230V AC under no-load conditions, making it ideal for modern power management applications demanding low standby power.

Engineered for reliability, the IC features multi-mode operation that maximises efficiency whether under light or full load. Its low thermal impedance (2°C per watt junction-to-case) ensures effective heat dissipation, while a fully integrated soft-start function minimises stress during power-up sequences for enhanced longevity. The device's compact, low-height profile is perfectly suited for space-constrained designs like power adapters and chargers.

Key Features & Benefits

• Integrated Design: Combines a 700V MOSFET and control circuitry, simplifying design and reducing component count.
• Multi-Mode Efficiency: Automatically adjusts operation to maintain high efficiency from light load to full load.
• Advanced Protection: Includes line under-voltage (UV) detection to prevent glitches and line over-voltage (OV) shutdown for extended surge protection.
• EMI Reduction: Features frequency jittering to reduce electromagnetic interference, lowering filter costs and simplifying compliance.
• Accurate Control: Offers an accurate, programmable current limit and optimised line feed-forward for excellent ripple rejection.
• Thermal Management: Low thermal impedance and a source-connected heat sink facilitate effective cooling with low EMI.
• Flexible Configuration: Includes a half-frequency option specifically beneficial for video applications. <br /

Variant Details

• Size: 4.08A 119W