品牌索引
產(chǎn)品分類 > 小信號開關(guān)二極管> 瞬態(tài)電壓抑制器TVS/ESD> 雙極管二極管> 調(diào)諧二極管> 齊納(穩(wěn)壓)二極管> 小信號肖特基二極管> 頻帶轉(zhuǎn)換二極管> 中/高功率管> 射頻PIN二極管> Sinterglass二極管> 整流器 > 可編程單結(jié)晶體管 (PUT)> SIDAC> 可控硅整流管 (SC) > 晶閘管浪涌保護器件 (TSPD)> 三端雙向可控硅開關(guān)元件 (TRIAC)> 半導(dǎo)體閘流管> 快速分立式> 相控分立式 > N溝道(N-Channel)> P溝道(P-Channel)> 雙N溝道(Dual N-Channel)> 雙P溝道(Dual P-Channel)> 雙N和P溝道(Dual N and P-Channel)
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產(chǎn)品介紹 說明
The UCC3817A and the UCC3818A family provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current. Designed in Texas Instrument’s BiCMOS process, the UCC3817A/UCC3818A offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry, a leading-edge modulation technique to reduce ripple current in the bulk capacitor and an improved, low-offset (±2 mV) current amplifier to reduce distortion at light load conditions. 特性
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