TinySwitch-II Series 交流/直流离线转换器 :

TinySwitch-II integrates a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry onto a monolithic device. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias winding and associated ircuitry.

• Fully integrated auto-restart for short circuit and open loop fault protection
• Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformer
• Programmable line undervoltage detect feature prevents power on/off glitches
• 132 kHz operation reduces transformer size
• Lowest component count switcher solution
• Expanded scalable device family for low system cost
• Frequency jittering dramatically reduces EMI (~10 dB)
• Simple ON/OFF control ? no loop compensation needed
• Better Cost/Performance over RCC & Linears
• Applications: Chargers for cell phones, Standby for PCs and TVs,DVD players/recorders, set-top boxes