NCP1336 ONSEMI [ON Semiconductor], NCP1336 Datasheet
NCP1336
Related parts for NCP1336
NCP1336 Summary of contents
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... 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− ...
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... Over−Voltage Protection High−Voltage Input OVERCURRENT PROTECTION ON NCP1336 VERSIONS NCP1336 / A NCP1336 / B A negative voltage applied to this pin reduces the internal maximum peak current setpoint. Connecting auxiliary winding through a resistor divider thus performs Over Power compensation. If grounded, OPP is null. ...
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... HV−bulk OPP 1 2 OTP 3 ZCD Vin 6 7 NCP1336 14 13 OVP Figure 1. Typical Application Example http://onsemi.com 3 + Vout GND GND ...
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VDD + − + − Rpullup FB + − + − VDD ICt − Setpoint Ct Discharge ZCD + − Leakage Vth ESD Blanking Laux 3us Pulse DRV GND /4 Ipeak_min = 25% Limit 100 ...
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MAXIMUM RATINGS TABLE Symbol VCCmax Maximum Power Supply voltage, V ICCmax Maximum current for VCC Pin VHVmax High voltage pin (pin 14) voltage range IHVmax Pin 14 current range Vmax Maximum voltage on low power pins (except pin 9, pin ...
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ELECTRICAL CHARACTERISTICS (For typical values T = 25°C, for min/max values T J Symbol SUPPLY SECTION VCC V increasing level at which the current source turns−off on CC VCC V level below which output pulses are stopped min CC VCC ...
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ELECTRICAL CHARACTERISTICS (For typical values T = 25°C, for min/max values T J Symbol CURRENT COMPARATOR OPP Setpoint decrease for V max OPP OPP Setpoint decrease for OPP pin shorted to ground s TIMING CAPACITOR VCT Maximum voltage on Ct ...
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ELECTRICAL CHARACTERISTICS (For typical values T = 25°C, for min/max values T J Symbol BROWNOUT PROTECTION VBO Brownout level IBO Hysteresis Current, V BO(pin) TBO Delay before BO confirmation (noise immunity) del IBO Brownout input bias current bias 3. Minimum ...
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... SMPS resumes operation. The latch−off phase can also be initiated, more classically, when V drops below VCC • Brownout: the NCP1336 includes a brownout circuit which safely stops the controller in case the input voltage is too low. Restart occurs via a complete startup sequence (latch reset and soft−start). ...
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... V and a new period start. Startup NCP1336 includes a high voltage startup circuitry that derives current from the bulk line to charge the V capacitor. When the power supply is first connected to the mains outlet, the internal current source is biased and ...
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... Figure 5. An error flag gets asserted as soon as the current setpoint reaches its upper limit (0.8 V/R ). Here the timer lasts 50 ms, a 100 nF capacitor being connected to pin 3. sense NCP1336 Operation The valley detection is done by monitoring the voltage of the auxiliary winding of the transformer. The typical detection level is fixed at 55 mV. When a valley is detected, the decimal counter is incremented ...
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Rpullup FB VDD ICt Setpoint Ct ZCD 10 V ESD Laux DRV Figure 6. Valley Selection and VCO Internal Schematic When an “n” valley is asserted by the valley selection circuitry, the controller is locked in this valley until the ...
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Figure 8. Selected Valley According to FB State As the output load decreases (FB voltage decreases), the valleys are incremented from the first to the fourth. When the fourth valley is reached voltage further decreases below 0.8 V, ...
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Figure 10. Zoom 1: 1st to 2nd Valley Transition feedback vdrain vct 2.20 1.80 ...
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Figure 12. Zoom 3: 3rd to 4th Valley Transition feedback vdrain vct 2.20 1.80 ...
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... Time Out In case of extremely damped free oscillations, the ZCD comparator can be unable to detect the valleys. Consequently, the decimal counter clock is in low state and the drive pulses stops. To avoid such situation, NCP1336 ZCD + 10 V Vth ESD Laux DRV integrates a Time Out function that acts as a clock for the decimal counter ...
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The 3rd Valley is Validated low high low high The 2nd Valley is Detected by the ZCD Comparator low high low 4.79m 4.81m Figure 15. Time Out Operation Chronogram high The 4th Valley is Validated low high low high ...
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VCO Mode VCO operation occurs for FB voltage lower than 0.8 V (FB decreasing), or lower than 1.6 V (FB increasing). This corresponds to low output power. During VCO operation, the peak current is fixed to 25% of its maximum ...
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Short−circuit or Overload Mode Figure 18 shows the implementation of the fault timer. When the current in the MOSFET is higher than, “Max (0 Ip” comparator trips and the timer capacitor is sense charged by ItimerC ...
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Figure 20. First Fault Mode Case, the Auxiliary Winding Collapses but Feedback is Still There Figure 21. Short−Circuit Case Where Vaux Does NOT Collapse on Version B Figure 22. Short−Circuit Case Where Vaux Does NOT Collapse on Version A http://onsemi.com ...
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Figure 23. This Case is Similar to a Short−Circuit Where V The recurrence in hiccup mode can easily be adjusted by either reducing the timer or increasing the V details the various time portion a hiccup is made of: Figure ...
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Over Voltage / Over Temperature Protection The OTP and OVP pins feature circuitries to protect the circuit against high temperature and high voltage (see Figure 25 Filter OTP A current flows out of the OTP pin into the ...
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... Aux R lower R sense Figure 28. The Internal OPP Circuitry Implemented on NCP1336 By connecting the OPP pin through a resistor divider to an auxiliary winding with flyback polarity, where a negative voltage proportional to the input voltage appears during the V OVP applied on the OPP pin directly affects the precise maximum peak current reference ...
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... R R With R upper OPP function is performed with negligible power wasted in the resistor divider. Brownout The NCP1336 features a brownout pin to protect the power supply against low input voltage condition. This pin permanently monitors a fraction of the bulk voltage through V , with N the IN p,aux a voltage divider ...
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... lower R + upper ORDERING INFORMATION Device NCP1336ADR2G NCP1336BDR2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. + VBO 20 ms Noise Delay - + BO Comp IBO IBO “on” Comp “low” ...
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... DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSIONS. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. MILLIMETERS DIM MIN MAX A 1.35 1.75 A1 0.10 0.25 A3 0.19 0.25 b 0.35 0.49 D 8.55 8.75 E 3.80 4.00 e 1.27 BSC H 5.80 6.20 h 0.25 0.50 L 0.40 1. 13X 1.18 1.27 PITCH ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1336/D ...