TOP261
TOP261 is Integrated Off Line Switcher manufactured by Power Integrations.
Feature
Set and Extended Power Range
Product Highlights
Lower System Cost, Higher Design Flexibility
- Multi-mode operation maximizes efficiency at all loads
- New e SIP-7F and e SIP-7C packages
- Low thermal impedance junction-to-case (2 °C per watt)
- Low height is ideal for adapters where space is limited
- Simple mounting using a clip to aid low cost manufacturing
- Horizontal e SIP-7F package ideal for ultra low height adapter and monitor applications
- Extended package creepage distance from DRAIN pin to adjacent pin and to heat sink
- No heat sink required up to 35 W using P, G and M packages with universal input voltage and up to 48 W at 230 VAC
- Output overvoltage protection (OVP) is user programmable for latching/non-latching shutdown with fast AC reset
- Allows both primary and secondary sensing
- Line undervoltage (UV) detection prevents turn-off glitches
- Line overvoltage (OV) shutdown extends line surge limit
- Accurate programmable current limit
- Optimized line feed-forward for line ripple rejection
- 132 k Hz frequency (254Y-258Y and all E/L packages) reduces transformer and power supply size
- Half frequency option for video applications
- Frequency jittering reduces EMI filter cost
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TOPSwitch-HX
CONTROL C
Figure 1. Typical Flyback Application.
PI-4510-100206
- Heat sink is connected to SOURCE for low EMI
- Improved auto-restart delivers <3% of maximum power in short circuit and open loop fault conditions
- Accurate hysteretic thermal shutdown function automatically recovers without requiring a reset
- Fully integrated soft-start for minimum start-up stress
- Extended creepage between DRAIN and all other pins improves field reliability
Output Power...
