NCP1216, NCP1216A PWM Current-Mode Controller for High-Power Universal Off-Line Supplies Housed in a SOIC 8 or PDIP 7 package, the NCP1216 represents an enhanced version of NCP1200 based controllers. Due to its high www.onsemi.com drive capability, NCP1216 drives large gatecharge MOSFETs, which together with internal ramp compensation and builtin frequency MARKING jittering, ease the design of modern ACDC adapters. DIAGRAMS With an internal structure operating at different fixed frequencies, 8 the controller supplies itself from the highvoltage rail, avoiding the SOIC8 XXXXX need of an auxiliary winding. This feature naturally eases the designer 8 D SUFFIX ALYW task in some particular applications, e.g. battery chargers or TV sets. 1 CASE 751 Current mode control also provides an excellent input audio 1 susceptibility and inherent pulsebypulse control. Internal ramp compensation easily prevents subharmonic oscillations from taking place in continuous conduction mode designs. XXXXXXXXX When the current setpoint falls below a given value, e.g. the output PDIP7 AWL P SUFFIX power demand diminishes, the IC automatically enters the socalled YYWWG CASE 626B skip cycle mode and provides excellent efficiency at light loads. 1 Because this occurs at a user adjustable low peak current, no acoustic noise takes place. XXXXXX = Specific Device Code The NCP1216 features an efficient protective circuitry, which in A = Assembly Location presence of an over current condition disables the output pulses while WL, L = Wafer Lot the device enters a safe burst mode, trying to restart. Once the default YY, Y = Year has gone, the device autorecovers. WW, W = Work Week G or = PbFree Package Features No Auxiliary Winding Operation PIN CONNECTIONS CurrentMode Control with Adjustable SkipCycle Capability Internal Ramp Compensation Adj HV 1 8 Limited Duty Cycle to 50% (NCP1216A Only) FB 2 7 NC Internal 1.0 ms SoftStart (NCP1216A Only) CS 3 6 V CC BuiltIn Frequency Jittering for Better EMI Signature Gnd 4 5 Drv AutoRecovery Internal Output ShortCircuit Protection Extremely Low NoLoad Standby Power 500 mA Peak Current Capability DEVICE MARKING AND Fixed Frequency Versions at 65 kHz, 100 kHz, 133 kHz ORDERING INFORMATION Internal Temperature Shutdown See detailed ordering and shipping information in the ordering information section on page 16 of this data sheet. Direct Optocoupler Connection SPICE Models Available for TRANsient and AC Analysis PintoPin Compatible with NCP1200 Series These are PbFree and HalideFree Devices Typical Applications High Power ACDC Converters for TVs, SetTop Boxes, etc. Offline Adapters for Notebooks Telecom DCDC Converters All Power Supplies Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: May, 2016 Rev. 16 NCP1216/DNCP1216, NCP1216A + *See Application Section NCP1216 Fosc = 35kHz 8 1 Adj HV + 2 7 FB EMI 3 CS Vcc 6 Filter 45 GNDDrv R comp Universal Input + R sense Figure 1. Typical Application Example PIN FUNCTION DESCRIPTION Pin No. Pin Name Function Pin Description 1 Adj Adjust the Skipping Peak Current This pin lets you adjust the level at which the cycle skipping process takes place. Shorting this pin to ground, permanently disables the skip cycle feature. 2 FB Sets the Peak Current Setpoint By connecting an Optocoupler to this pin, the peak current setpoint is adjusted accordingly to the output power demand. 3 CS Current Sense Input This pin senses the primary current and routes it to the internal com- parator via an L.E.B. By inserting a resistor in series with the pin, you control the amount of ramp compensation you need. 4 GND IC Ground 5 Drv Driving Pulses The drivers output to an external MOSFET. 6 V Supplies the IC This pin is connected to an external bulk capacitor of typically 22 F. CC 7 NC This unconnected pin ensures adequate creepage distance. 8 HV Generates the V from the Line Connected to the highvoltage rail, this pin injects a constant current CC into the V bulk capacitor. CC www.onsemi.com 2