NCP1237 ONSEMI [ON Semiconductor], NCP1237 Datasheet - Page 27

• Manufacturer Part Number: NCP1237
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

above V
peak current follows the setpoint imposed by the
If during the Soft−Skip duration the FB voltage goes
FB(fold)
CS setpoint
V
V
, the Soft−Skip ends instantaneously, and the
V
skip(out)
FB(fold)
skip(in)
DRV
V
FB
Enters
skip
Figure 25. Skip Cycle with Soft−Skip Timing Diagram
Soft-skip
http://onsemi.com
Exits
skip
27
Enters
skip
current−mode control. This transient load detection feature
avoids large output voltage drops if a load transient occurs
while the controller is in soft−skip mode.
Exits
Soft-
skip
skip
soft-skip
Exits
Time
Time
Time