CS6581EO - Non-isolated LED driver circuit

Huajing Microelectronics

Datasheet Details

Part number	CS6581EO
Manufacturer	Huajing Microelectronics
File Size	425.64 KB
Description	Non-isolated LED driver circuit
Datasheet	CS6581EO Datasheet

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CS6581EO LED 1 CS6581EO LED ， LED ， 12V~600V ； 600V MOSFET，。， LED ，；，，。 CS6581EO，，。，VCC，LED/，，。： ● ， ● 600V MOSFET ● （<1mA） ● UVLO ● LED / ● ● ● ：SOP8 2 2. 1 1 1 6 CS6581EO 2. 2 2.2.1 UVLO ，VCC。VCCUVLO，，，V CC U V L O ，， UVLO。 2.2.2 BUCK ，。 MOSFET ，，，CS VCS， VCS PWM 0.5V ，PWM ，RS ， MOSFET ， LED 。RZCD1、 RZCD2 。，，RZCD1、 RZCD2 。 ZCD ，，RS ， MOSFET ，。， PWM Vref/Rcs，，—— LED ，，，，。 2.2.3 CS6581EO ，LED ： I O = I PK / 2 = VCS / 2RCS = VREF / 2Rcs ： VREF（ 0.5V） RCS 2.2.4 CS6581EO ， MOSFET ，。 150us ， ZCD MOSFET ，， MOSFET，。 2.2.5 CS6581EO ，， EMI ， 4.5us。， MOSFET 4.5us ，ZCD MOSFET。 ZCD GATE Toff>4.5us 2 2 6 CS6581EO 2.2.6 ，MOSFET ，。CS6581EO ， MOSFET ， 280ns ，，，，： VCS TLEB=280ns t 3 2.2.