The TOP242-249 TOPSwitch-GX family is an integrated off-line switcher with extended power range, design flexibility, and eco-friendly features. It is suitable for typical flyback applications, providing high performance and low system cost.
The document provides a comprehensive technical overview of the TOPSwitch-GX family of integrated off-line switchers, specifically models TOP242 through TOP249. It highlights key features such as extended power ranges up to 250W, integrated soft-start, externally programmable current limits, and energy-efficient standby modes. The datasheet explains the functional block diagrams for different package types (P, G, Y, R) and describes the operation of various pins including Control, Drain, Source, Line-Sense, and Frequency.
| Maximum Continuous Power (Open Frame) | 250 W |
|---|---|
| Switching Frequency | 132 kHz |
| Standby Power Consumption (110 VAC) | 80 mW |
| Standby Power Consumption (230 VAC) | 160 mW |
| Input Voltage Range | 85-265 VAC |
The TOPSwitch-GX family has an extended power range up to 250 W.
The switching frequency is automatically reduced at light load to improve efficiency.
The device enters an overvoltage shutdown mode to extend the line surge limit.
Yes, for Y or R packages, the frequency can be selected as 132 kHz or 66 kHz.