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FAN7930C Datasheet(PDF) 7 Page - Fairchild Semiconductor

Part # FAN7930C
Description  Critical Conduction Mode PFC Controller
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN7930C Datasheet(HTML) 7 Page - Fairchild Semiconductor

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© 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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