Description:
The TOPSwitch-HX is a highly integrated monolithic off-line switcher IC designed for off-line power supplies. TOPSwitch-HX integrated circuits enable design of power supplies up to 195 W, while providing high efficiency under all load conditions. TOPSwitch-HX also provides very good performance at low load and during standby (no load) operation. The TOPSwitch-HX Family allows the designer to meet the efficiency requirements for the new energy-efficiency standards. Innovative and proprietary features enable design of compact and cost effective switching power supplies while reducing overall design cycle time and system cost. The TOPSwitch-HX Family also enables the design of power supplies with robust functionality and provides enhanced safety features such as output overvoltage protection, overload power limiting and hysteretic thermal protection.
Lower System Cost, Higher Design Flexibility
Multi-mode operation maximizes efficiency at all loads
New eSIP-7C and eSIP-7F packages build on PI’s experience with high power and high reliability packages
No heatsink required up to 35 W (up to 48 W at 230 VAC) using P, G or M packages
Output overvoltage protection (OVP) is user programmable for latching/non-latching shutdown with fast AC reset
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 packages) reduces transformer and power supply size (half frequency option for video applications)
Tight I2f parameter tolerance reduces system cost
Frequency jittering reduces EMI filter cost
Heatsink is connected to SOURCE for low EMI
Improved auto-restart delivers 600 mW output at 110 VAC input
>500 mW output at 265 VAC input
eSIP (E) Package (eSIP Package Information)
Low junction-to-case thermal impedance (2 °C per watt)
Low height is ideal for adapters where space is limited
Simple clip-mounted heatsink reduces manufacturing cost
Applications:
LCD monitors
Personal computers
Small servers
Laptop adapters
Set-top boxes
Digital TVs
Printers
DVD Players and Recorders
UPS
Video Games
Broadband Modems
Cellular phone adapters
Audio Amplifiers
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