Power Integrations TOP245YN TOPSwitch-GX Off-Line Switcher TO220-6

The Power Integrations TOP245YN is an off-line switcher in a 6-pin TO-220 package, rated for up to 85 W at 230 VAC in an open-frame design.

Overview

Part of the TOPSwitch-GX EcoSmart series, the TOP245YN integrates a high-voltage power MOSFET, PWM control, fault protection and other essential control circuitry onto a single CMOS chip. This integration is designed to reduce overall system cost while supporting design flexibility, performance and energy efficiency.

Key Features

• Soft start for controlled power-up
• Frequency jittering to minimise electromagnetic interference (EMI)
• Wider maximum duty cycle (DCMAX)
• Hysteretic thermal shutdown with automatic recovery from fault conditions
• Larger creepage package for improved safety and reliability
• Tighter temperature and absolute tolerances on current limit, frequency and PWM gain

Power Output

The device delivers 85 W at 230 VAC and 60 W across a 85 VAC to 265 VAC input range in an open-frame design. For enclosed, non-ventilated adapter applications, it provides 40 W at 230 VAC and 26 W across the same input range. The wider duty cycle allows more power delivery from a smaller input capacitor, and the device can regulate down to zero load without the need for dummy loading.

Applications

The TOP245YN is suited to higher-power applications and enclosed adapter designs. Its 132 kHz switching frequency (when the frequency pin is connected to source) enables the use of smaller transformers and power supplies, contributing to more compact end-product designs.

Dimensions and Weight

Width 3, depth 2.5 and height 4, with a weight of 2 g.

Choose the Power Integrations TOP245YN when you need an integrated off-line switcher from the TOPSwitch-GX EcoSmart series for compact, efficient switch-mode power supply designs.