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CS6581EO - Non-isolated LED driver circuit

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Datasheet Details

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