FS6830 Schematic ( PDF Datasheet ) - American First Semiconductor

Teilenummer	FS6830
Beschreibung	Low Standby Power High Performance PWM Controller
Hersteller	American First Semiconductor
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Warning: file_get_contents(https://widget.octopart.com/_widget/search?q=FS6830&size=1): failed to open stream: HTTP request failed! HTTP/1.1 503 Service Unavailable in /home/data39/supply_pdf_ad.html on line 2 Gesamt 9 Seiten Low Standby Power High Performance PWM Controller FS6830 General Description FS6830 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in sub 40W range. PWM switching frequency at normal operation is externally programmable and trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved. The internal slope compensation improves system large signal stability and reduces the possible sub-harmonic oscillation at high PWM duty cycle output. Leading-edge blanking on current sense(CS) input removes the signal glitch due to snubber circuit diode reverse recovery and thus greatly reduces the external component count and system cost in the design. FS6830 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). The Gate-drive output is clamped to maximum 18V to protect the power MOSFET. Excellent EMI performance is achieved with frequency shuffling technique together with soft switching control at the totem pole gate drive output. FS6830 is offered in SOT23-6 package. Applications  Battery Charger  Power Adaptor for PDA and Digital Camera  Set-Top Box Power Supplies  Open-frame SMPS Features  Optimized for Sub 40W Applications  Frequency Shuffling for Improved EMI  Extended Burst Mode for Improved Efficiency and Low Standby Power  Audio Noise Free Operation  External Programmable PWM Switching Frequency  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  Gate Output Maximum Voltage Clamp (18V)  Pb-free SOT23-6 Package @ 2010 Copyright By American First Semiconductor Page 1/9 Typical Application FS6830 www.First-semi.com Page 6/9 6 Page
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Teilenummer	Beschreibung	Hersteller
FS6830	Low Standby Power High Performance PWM Controller	American First Semiconductor

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