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SG6902 Datasheet(PDF) 8 Page - Fairchild Semiconductor |
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SG6902 Datasheet(HTML) 8 Page - Fairchild Semiconductor |
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8 / 22 page  Product Specification Green-Mode PFC / Flyback-PWM Controller SG6902 © System General Corp. - 8 - www.sg.com.tw • www.fairchildsemi.com Version 1.3.1 (IAO33.0022.B3) September, 2007 PWM STAGE FBPWM Symbol Parameter Test Conditions Min. Typ. Max. Unit Av-PWM FB to Current Comparator Attenuation 2.5 3.1 3.5 V/V ZFB * Input Impedance 4 5 7 KΩ IFB Maximum Source Current 0.8 1.2 1.5 mA FBOPEN-LOOP PWM Open-Loop Protection Threshold 4.2 4.5 4.8 V TOPEN-PWM PWM Open-Loop Protection Delay Time RI=24kΩ 45 56 70 ms VPFC-OFF1 PFC Off Voltage at FBPWM RANGE=Ground VG+0.2V V VPFC-OFF2 PFC Off Voltage at FBPWM RANGE=Open VG+0.2V V TPFC-OFF PFC Off Delay Time RI=24kΩ 500 650 800 ms VPFC-ON 1.6 PFC On Voltage at FBPWM RANGE=Ground VRMS=1.6V VG+0.35 V V VPFC-ON 2.85 PFC On Voltage at FBPWM RANGE=Ground VRMS=2.85V VG+0.35 V V VPFC-ON 0.8 PFC On Voltage at FBPWM RANGE=Open VRMS=0.8V VG+0.85 V V VPFC-ON 1.95 PFC On Voltage at FBPWM RANGE=Open VRMS=1.95V VG+0.5V V VN Frequency Reduction Threshold on FBPWM RANGE=Ground 1.9 2.1 2.3 V SG *1 Green-Mode Modulation Slope 60 75 90 Hz/V VG Voltage on FBPWM at FS=20KHz 1.35 1.60 1.75 V * Not tested in production. PWM-Current Sense Symbol Parameter Test Conditions Min. Typ. Max. Unit TPD-PWM Propagation Delay to Output 60 120 ns VLIMIT-1 Peak Current Limit Threshold Voltage1 RANGE=Open 0.65 0.70 0.75 V VLIMIT-2 Peak Current Limit Threshold Voltage2 RANGE=Ground 0.60 0.65 0.70 V TBNK-PWM Leading-Edge Blanking Time 270 350 450 ns △ VSLOPE Slope Compensation △ VS=△VSLOPE x (Ton/T) △ VS: Compensation Voltage Added to Current Sense 0.45 0.50 0.55 V PWM Output Driver Symbol Parameter Test Conditions Min. Typ. Max. Unit VZ-PWM Output Voltage Maximum (Clamp) VDD=20V 16 18 V VOL-PWM Output Voltage Low VDD=15V; IO=100mA 1.5 V VOH-PWM Output Voltage High VDD=13V; IO=100mA 8 V TR-PWM Rising Time VDD=15V; CL=5nF; OPWM=2V to 9V 30 60 120 ns TF-PWM Falling Time VDD=15V; CL=5nF; OPWM=9V to 2V 30 50 110 ns DCMAX-PWM Maximum Duty Cycle 73 78 83 % |
Similar Part No. - SG6902 |
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Similar Description - SG6902 |
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