Comparison Between FSDM0x65RNB and FSQ-Series
Function
Operation Method
EMI Reduction
Burst-Mode
Operation
Protection
FSDM0x65RNB
Constant
Frequency PWM
Frequency
Modulation
Fixed Burst Peak
FSQ-Series
Advantages of FSQ-Series
Valley Switching
Operation
Improved efficiency by valley switching
Reduced EMI noise
Valley Switching &
Inherent Frequency Reduce EMI noise in two ways
Modulation
Advanced Burst-
Mode
Improved standby power by valley switching also in
burst-mode
Because the current peak during burst operation is
dependent on VFB, it is easier to solve audible
noise
AOCP
Improved reliability through precise abnormal over-
current protection
© 2007 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321 • Rev. 1.0.6
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