PowerIntLinkSwitch－TN2系列蓝牙墙壁开关参考设计(DER622)

PowerInt公司的DER622是采用LinkSwitchTM-TN2系列LNK3202D非隔离反激拓扑蓝牙墙壁开关参考设计,AC输入宽,3W到250W负载,230VAC时的待机电流小于300uA,无负载输入电流小于75uA,功耗小于15mW,主要用于照明控制.本文介绍了LinkSwitch™-TN2系列产品亮点,以及采用LinkSwitchTM-TN2系列LNK3202D非隔离反激蓝牙墙壁开关参考设计DER622主要特性和指标,电路图,变压器电路图,材料清单和PCB设计图.
The LinkSwitch™-TN2 family of ICs for non-isolated off-line power supplies provide dramatically improved performance compared to traditional linear or cap-dropper solutions. Designs using the highly integrated LinkSwitch-TN2 ICs are more flexible and feature increased efficiency, comprehensive system level protection and higher reliability. The device family supports buck, buck-boost and flyback converter topologies. Each device incorporates a 725 V power MOSFET, oscillator, On/Off control for highest efficiency at light load, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and output and input overvoltage protection circuitry onto a monolithic IC.
LinkSwitch-TN2 devices feature improved accuracy of feedback pin regulation — ± 1.3% versus 6.6% of previous generation (LinkSwitch-TN). LinkSwitch-TN2 ICs consume very little current in standby resulting in power supply designs that meet all no-load and standby specifications worldwide. MOSFET current limit modes can be selected through the BYPASS pin capacitor value. The high current limit level provides maximum continuous output current while the low level permits using very low cost and small surface mount inductors. A full suite of protection features enable safe and reliable power supplies protecting the device and the system against input and output overvoltage faults, device over-temperature faults, lost regulation, and power supply output overload or short-circuit faults.
LinkSwitch™-TN2系列产品亮点:

Highest Perfo...