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(续上期)4一种用T0P250YN组成的75W LED驱动电路采用POWER INTEGRATIONS公司的芯片TOP250YN来做LED灯驱动器有很多优点。下面介绍一种75W LED灯的驱动电路。它的主要特点有:(1)输入电压范围208～277VAC,输出直流电压
(Continued) 4 A 75W LED Driver Circuit Using T0P250YN There are many advantages to using a POWER2EON TOP250YN chip to make an LED lamp driver. The following describes a 75W LED lamp drive circuit. Its main features are: (1) the input voltage range of 208 ~ 277VAC, the output DC voltage