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NCP1336A

ON Semiconductor
Part Number NCP1336A
Manufacturer ON Semiconductor
Description Quasi-Resonant PWM Controller
Published Nov 26, 2022
Detailed Description NCP1336A/B Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies The NCP1336 hosts a hi...
Datasheet PDF File NCP1336A PDF File

NCP1336A
NCP1336A


Overview
NCP1336A/B Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies The NCP1336 hosts a high−performance circuitry aimed to www.
onsemi.
com powering quasi−resonant converters.
Capitalizing on a novel QUASI−RESONANT PWM valley−lockout system, the controller shifts gears and reduces the CONTROLLER FOR HIGH POWER switching frequency as the power loading becomes lighter.
This AC−DC WALL ADAPTERS results in a stable operation despite switching events always occurring in the drain−source valley.
This system works down to the 4th valley and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance.
The controller takes benefit of a high−voltage start−up current source to provide a quick and lossless power−on sequence.
To improve the safety in overload situations, the controller includes an Over Power Protection circuit which clamps the delivered power at high−line.
Safety−wise, an adjustable timer relies on the feedback voltage to detect a fault.
On version B, this fault triggers a triple−hiccup on the 14 1 SO−14 CASE 751AN SUFFIX O MARKING DIAGRAM 14 NCP1336xG AWLYWW 1 A = Assembly Location x = A or B WL = Wafer Lot VCC pin which naturally reduces the average input power drawn by the converter.
On version A, when a fault is detected, the controller is latched−off.
Y = Year WW = Work Week G = Pb−Free Package Particularly well suited for adapter applications, the controller features two latch inputs: one dedicated to Over Temperature protection (OTP) which offers an easy means to connect a pull−down temperature sensor like an NTC, and a second one more classical that can be used to perform an accurate Over Voltage Protection.
Finally, a brownout pin which stops the circuit operation in presence of a low mains condition is included.
PIN CONNECTIONS OPP OTP Timer ZCD Ct HV OVP BO VCC Features • Quasi−Resonant Peak Current−Mode Control Operation • Valley Switching Operation with Valley−L...


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