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