NCP1336A/B Quasi-Resonant Current Mode Controller for High Power Universal Off-Line Supplies www.onsemi.com The NCP1336 hosts a highperformance circuitry aimed to powering quasiresonant converters. Capitalizing on a novel QUASIRESONANT PWM valleylockout system, the controller shifts gears and reduces the CONTROLLER FOR HIGH POWER switching frequency as the power loading becomes lighter. This ACDC WALL ADAPTERS results in a stable operation despite switching events always occurring MARKING th in the drainsource valley. This system works down to the 4 valley DIAGRAM and toggles to a variable frequency mode beyond, ensuring an 14 14 excellent standby power performance. 1 NCP1336xG The controller takes benefit of a highvoltage startup current SO14 AWLYWW source to provide a quick and lossless poweron sequence. To improve CASE 751AN the safety in overload situations, the controller includes an Over Power SUFFIX O 1 Protection circuit which clamps the delivered power at highline. A = Assembly Location Safetywise, an adjustable timer relies on the feedback voltage to x = A or B detect a fault. On version B, this fault triggers a triplehiccup on the WL = Wafer Lot Y = Year VCC pin which naturally reduces the average input power drawn by WW = Work Week the converter. On version A, when a fault is detected, the controller is G = PbFree Package latchedoff. Particularly well suited for adapter applications, the controller features two latch inputs: one dedicated to Over Temperature PIN CONNECTIONS protection (OTP) which offers an easy means to connect a pulldown OPP HV temperature sensor like an NTC, and a second one more classical that OTP can be used to perform an accurate Over Voltage Protection. Timer OVP Finally, a brownout pin which stops the circuit operation in presence ZCD BO of a low mains condition is included. Ct VCC FB DRV Features CS GND QuasiResonant Peak CurrentMode Control Operation (Top View) Valley Switching Operation with ValleyLockout for NoiseImmune Operation ORDERING INFORMATION Internal 5 ms SoftStart See detailed ordering and shipping information in the package dimensions section on page 25 of this data sheet. LossFree Adjustable Over Power Protection AutoRecovery or Latched Internal Output Short Circuit Protection Adjustable Timer for Improved ShortCircuit Protection Overvoltage and Overtemperature Protection Inputs Brownout Input SO14 Package 500 mA/+800 mA Peak Current Source/Sink These are PbFree Devices Capability This Device uses HalogenFree Molding Compound Internal Temperature Shutdown Typical Applications Direct Optocoupler Connection High Power acdc Converters for TVs, SetTop Boxes etc 3 s Blanking Delay to Ignore Leakage Ringing at Offline Adapters for Notebooks TurnOff Extremely Low NoLoad and Standby Power Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: March, 2017 Rev. 4 NCP1336/DNCP1336A/B PIN FUNCTION DESCRIPTION Pin No. Pin Name Function Pin Description 1 OPP Adjust the Over Power A negative voltage applied to this pin reduces the internal maximum peak Protection current setpoint. Connecting it to an auxiliary winding through a resistor divider thus performs Over Power compensation. If grounded, OPP is null. 2 OTP OverTemperature Connect an NTC between this pin and GND pin. Pin 2 features an internal Protection current source that biases the NTC. When the NTC pulls the pin down, the circuit permanently latchesoff. 3 Timer Timer Wiring a capacitor to ground helps selecting the timer duration. 4 ZCD Zero Crossing Detection Connected to the auxiliary winding, this pin detects the core reset event. 5 Ct Timing Capacitor A capacitor connected to this pin acts as the timing capacitor in foldback mode. 6 FB Feedback Pin Hooking an optocoupler collector to this pin will allow regulation. 7 CS Current Sense This pin monitors the primary peak current. 8 GND This pin is the controller ground. 9 DRV Driver Output This pin is the drivers output to an external MOSFET. 10 VCC Supplies the Controller This pin is connected to an external auxiliary voltage. 11 BO Brownout This pin is the brownout input. 12 OVP OverVoltage Protection By pulling this pin high, the controller can be permanently latchedoff. 13 NC This pin is omitted for improved creepage. 14 HV HighVoltage Input Connected to the bulk capacitor, this pin powers the internal current source to deliver a startup current. OVERCURRENT PROTECTION ON NCP1336 VERSIONS AutoRecovery Latched Overcurrent protection Overcurrent protection NCP1336 / A X NCP1336 / B X www.onsemi.com 2