NCP5359
Table 1. DECODER TRUTH TABLE
PWM Input
Greater than 2.2 V
Greater than 0.8 V, but less than 2.2 V
Greater than 0.8 V, but less than 2.2 V
Less than 0.8 V
ZCD
X
High (current through MOSFET is greater than 0)
Low (current through MOSFET is less than 0)
X
DRVL
Low
High
Low
High
DRVH
High
Low
Low
Low
IN
DRVL
tpdl DRVL
90%
2V
t fDRVL
10%
10%
90%
DRVH ? SW
tpdh DRVH
10%
t rDRVH
90%
tpdl DRVH
90%
t fDRVH
2V
10%
t rDRVL
tpdh DRVL
SW
Figure 3.
PWM
DRVH ? SW
DRVL
IL
Figure 4. Timing Diagram
http://onsemi.com
6
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