FAN7930C Fairchild Semiconductor, FAN7930C Datasheet - Page 7

• Manufacturer Part Number: FAN7930C
• Description: The FAN7930C is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM)
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN7930C • Rev. 1.0.1
Comparison of FAN7530 and FAN7930C
V
Comparison between FAN7930 and FAN7930C
IN
Frequency Limit
RDY Hysteresis
PFC Ready Pin
RDY Threshold
-Absent Detection
THD Optimizer
Control Range
Compensation
Soft-Start and
Function
Prevention
Overshoot
Function
TSD
FAN7530
FAN7930
External
2.240V
0.600V
None
None
None
None
None
None
140°C with 60°C
FAN7930C
FAN7930C
Hysteresis
Integrated
Integrated
Integrated
Integrated
Integrated
Internal
2.240V
0.189V
7
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No External Circuit for PFC Output UVLO
Reduce Power Loss and BOM Cost Caused by
PFC Out UVLO Circuit
Versatile Open-Drain Pin
Abnormal CCM Operation Prohibited
Abnormal Inductor Current Accumulation can be
Prohibited
Increase System Reliability by testing for input
supply voltage
Guarantee Stable Operation at Short Electric
Power Failure
Reduce Voltage and Current Stress at Startup
Eliminate Audible Noise due to Unwanted OVP
Triggering
No External Resistor is Needed
Stable and Reliable TSD Operation
Converter Temperature Range Limited Range
If PFC rated output voltage is assumed 390V:
FAN7930: V
FAN7930C: V
FAN7930C Advantages
FAN7930C Remark
V
V
RDY_HIGH
RDY_LOW
RDY_LOW
RDY_HIGH
trigger voltage = 349V
trigger voltage = 256V
trigger voltage = 320V
trigger voltage = 349V
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