FS6823DG Schematic ( PDF Datasheet ) - American First Semiconductor

Teilenummer	FS6823DG
Beschreibung	Low Standby Power High Performance PWM Controller
Hersteller	American First Semiconductor
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Gesamt 9 Seiten Low Standby Power High Performance PWM Controller FS6823DG General Description FS6823DG is a current mode PWM controller with integrated high voltage power MOSFET. It could be used in sub 10W(Note 1) applications. In PWM mode, FS6823DG operates in fixed frequency which is precisely set internally.FS6823DG could operate in Extended Burst Mode at no load or light load, in which mode switching loss is minimized and the frequency is adjusted internally. To ensure that power supplies work quietly, the frequency is set beyond 20 KHz in Extended Burst Mode. Small current is needed when SFSP658623DF Gstasrttasrtuspuapnadnwdowrkosr,ktsh, uthsuaslarlgaergveavluaelureesriesstiosrtocrocuoldulbdebueseudsed in the startup circuit to minimize the standby power. Slope compensation circuit is integrated in FS6823DG, which improves system large signal stability and reduces the possible sub-harmonic oscillation at high PWM duty cycle. Leading-edge blanking on current sense (CS) input eliminates the signal glitch due to snubber circuit diode reverse recovery current. Frequency jittering technique is integrated in FS6823DG, which helps to achieve excellent EMI performance. FS6823DG offers complete protection functions including cycle-by-cycle current limiting protection(OCP), over load protection(OLP),VDD over voltage protection(OVP), VDD over voltage clamp and under voltage lockout(UVLO).FS6823DG is available in Pb-free SOP8 package. Applications  Battery Charger  Power Adaptor for PDA and Digital Camera  Set-Top Box Power Supplies  Open-frame SMPS Features  Optimized for Sub 10W Applications(Note 1)  650V Power MOSFET is Integrated  4mS Soft Start  Frequency Jittering for Improved EMI  Extended Burst Mode for Improved Efficiency and Low Standby Power  Audio Noise Free Operation  Fixed 50KHz Switching Frequency in PWM Mode  Internal Synchronized Slope Compensation  Low VDD Startup Current and Low Operating Current  Leading Edge Blanking on Current Sense Input  Over Load Protection(OLP) and Cycle-by-Cycle Current Limiting Protection(OCP)  VDD Over Voltage Protection(OVP),Under Voltage Lockout Protection(UVLO) and Over Voltage Clamp  Pb-free SOP8 Package @ 2010 Copyright By American First Semiconductor Page 1/9 Typical Application FS6823DG www.First-semi.com Page 6/9 6 Page
Seiten	Gesamt 9 Seiten
PDF Download	[ FS6823DG Schematic.PDF ]

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Besondere Datenblatt

Teilenummer	Beschreibung	Hersteller
FS6823DG	Low Standby Power High Performance PWM Controller	American First Semiconductor

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