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FAN7930C Datasheet(PDF) 7 Page - Fairchild Semiconductor |
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FAN7930C Datasheet(HTML) 7 Page - Fairchild Semiconductor |
7 / 22 page ![]() © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN7930C • Rev. 1.0.0 7 Comparison of FAN7530 and FAN7930C Function FAN7530 FAN7930C FAN7930C Advantages PFC Ready Pin None Integrated No External Circuit for PFC Output UVLO Reduce Power Loss and BOM Cost Caused by PFC Out UVLO Circuit Versatile Open-Drain Pin Frequency Limit None Integrated Abnormal CCM Operation Prohibited Abnormal Inductor Current Accumulation can be Prohibited VIN-Absent Detection None Integrated Increase System Reliability by testing for input supply voltage Guarantee Stable Operation at Short Electric Power Failure Soft-Start and Overshoot Prevention None Integrated Reduce Voltage and Current Stress at Startup Eliminate Audible Noise due to Unwanted OVP Triggering THD Optimizer External Internal No External Resistor is Needed TSD None 140°C with 60°C Hysteresis Stable and Reliable TSD Operation Converter Temperature Range Limited Range Comparison between FAN7930 and FAN7930C Function FAN7930 FAN7930C FAN7930C Remark RDY Threshold 2.240V 2.240V If PFC rated output voltage is assumed 390V: FAN7930: VRDY_HIGH trigger voltage = 349V VRDY_LOW trigger voltage = 256V FAN7930C: VRDY_HIGH trigger voltage = 349V VRDY_LOW trigger voltage = 320V RDY Hysteresis 0.600V 0.189V Control Range Compensation None Integrated |
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