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首页> 外文会议>Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2012 IEEE International >Off-the-line primary-side regulation LED lamp driver with single-stage PFC and TRIAC dimming using LED forward-voltage and duty-variation tracking control
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Off-the-line primary-side regulation LED lamp driver with single-stage PFC and TRIAC dimming using LED forward-voltage and duty-variation tracking control

机译：具有单级PFC和TRIAC调光功能的离线初级侧调节LED灯驱动器，采用LED正向电压和占空比变化跟踪控制

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摘要

Non-isolation LED drivers [1] are more attractive than isolated drivers in terms of efficiency and lower fabrication cost. However, some areas such as bar-typed fluorescent lamp retrofit applications still require a solution with isolation. Even for replacement of the incandescent and compact fluorescent lamps, some LED lamp makers prefer isolated driver solutions due to safety issues. One of the popular solutions is the flyback converter which is widely used in low-to-moderate power applications [2]. However, generally, it requires secondary voltage or current-sense circuit, and opto-coupler isolator to form a feedback loop. Thus, primary-side regulation (PSR) flyback converters have been steadily used in LED applications since they do not need secondary circuits and isolator [3]. This paper introduces a PSR method for LED lamp which satisfies low price, good efficiency, high power factor (PF) and triode AC switch (TRIAC) dimming control.
机译：就效率和较低的制造成本而言，非隔离式LED驱动器[1]比隔离式驱动器更具吸引力。但是，某些领域，例如条形荧光灯的改造应用，仍然需要隔离的解决方案。即使是替换白炽灯和紧凑型荧光灯，由于安全问题，一些LED灯制造商还是喜欢隔离式驱动器解决方案。流行的解决方案之一是反激式转换器，它广泛用于中低功率应用[2]。然而，通常，它需要次级电压或电流检测电路以及光耦合器隔离器以形成反馈环路。因此，初级侧调节（PSR）反激转换器已被稳定地用于LED应用中，因为它们不需要次级电路和隔离器[3]。本文介绍了一种满足低价格，高效率，高功率因数（PF）和三极管交流开关（TRIAC）调光控制的LED灯的PSR方法。

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