SERIES OVERVIEW:
Lower System Cost, Higher Design Flexibility:
• Multi-mode operation maximizes efficiency at all loads
• New eSIP-7F and eSIP-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 eSIP-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 kHz 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 Figure 1. Typical Flyback Application.
• 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
EcoSmart™– Energy Efficient
• Energy efficient over entire load range• No-load consumption
• Less than 200 mW at 230 VAC
• Standby power for 1 W input
• >600 mW output at 110 VAC input
• >500 mW output at 265 VAC input
Description:
TOPSwitch-HX cost effectively incorporates a 700 V power MOSFET, high voltage switched current source, PWM control,oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.
Feature
- Multi-mode operation maximizes efficiency at all loads
- Low height is ideal for adapters where space is limited
- Line under-voltage detection prevents turn-OFF glitches
- Line over-voltage shutdown extends line surge limit
- Accurate programmable current limit
- Heat sink is connected to source for low EMI
- Fully integrated soft-start for minimum start-up stress
(Picture: Pinout)
