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| FSQ0365_0709 Datasheet, PDF (15/24 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter - Low EMI and High Efficiency | |||
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tsmax=18μs
IDS
tB=15μs
ts
IDS
tB=15μs
ts
IDS
A
IDS
B
67kHz
59kHz
55kHz
When the resonant period is 2μs
A
BC
Constant
frequency
D
Burst
mode
PO
FSQ0365RN Rev. 00
Figure 28. Switching Frequency Range
IDS
tB=15μs
ts
IDS
C
IDS
IDS
tB=15μs
D
tW=3μs
tsmax=18μs
FSQ0365RN Rev. 00
Figure 27. Valley Switching with Limited Frequency
© 2006 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.5
15
www.fairchildsemi.com
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