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NCP1336A Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP1336A Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 26 page © Semiconductor Components Industries, LLC, 2012 July, 2012 − Rev. 0 1 Publication Order Number: NCP1336/D NCP1336A/B Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies The NCP1336 hosts a high−performance circuitry aimed to powering quasi−resonant converters. Capitalizing on a novel valley−lockout system, the controller shifts gears and reduces the switching frequency as the power loading becomes lighter. This 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 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. 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. Features • Quasi−Resonant Peak Current−Mode Control Operation • Valley Switching Operation with Valley−Lockout for Noise−Immune Operation • Internal 5 ms Soft−Start • Loss−Free Adjustable Over Power Protection • Auto−Recovery or Latched Internal Output Short− Circuit Protection • Adjustable Timer for Improved Short−Circuit Protection • Overvoltage and Overtemperature Protection Inputs • Brownout Input • −500 mA/+800 mA Peak Current Source/Sink Capability • Internal Temperature Shutdown • Direct Optocoupler Connection • 3 ms Blanking Delay to Ignore Leakage Ringing at Turn−Off • Extremely Low No−Load and Standby Power • SO14 Package • These are Pb−Free Devices • This Device uses Halogen−Free Molding Compound Typical Applications • High Power ac−dc Converters for TVs, Set−Top Boxes etc • Offline Adapters for Notebooks http://onsemi.com SO−14 CASE 751AN SUFFIX O PIN CONNECTIONS MARKING DIAGRAM A = Assembly Location x = A or B WL = Wafer Lot Y = Year WW = Work Week G = Pb−Free Package (Top View) HV BO OVP VCC DRV GND OTP OPP ZCD Timer Ct FB CS QUASI−RESONANT PWM CONTROLLER FOR HIGH POWER AC−DC WALL ADAPTERS See detailed ordering and shipping information in the package dimensions section on page 25 of this data sheet. ORDERING INFORMATION 1 14 NCP1336x AWLYWWG 1 14 |
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