NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 31

• Manufacturer Part Number: NCP1246
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

input, and its output is periodically sampled and reset, in
order to follow closely the input voltage variations. The
A 3 bit A/D converter with the peak detector senses the ac
Figure 65. Overpower Protection Current Relation to Peak of Rectified Input Line AC voltage
Figure 66. Block Schematic of Overpower Protection Circuit
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NCP1246
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sample and reset events are given by the V
comparator used for sampling detection for the ac line input.
HV(stop)