NCP1200D100R2G

NCP1200 PWM Current-Mode Controller for Low-Power Universal Off-Line Supplies Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a major leap toward ultra−compact Switchmode Power Supplies. Due to a novel concept, the circuit allows the implementation of a complete offline ...

V EMI Filter Universal Input *Please refer to the application information section Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á ...

Adj 75 Current 3 Sense Ground + V ref 5 Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á ...

ELECTRICAL CHARACTERISTICS unless otherwise noted) CC Rating DYNAMIC SELF−SUPPLY (All Frequency Versions, Otherwise Noted) V Increasing Level at Which the Current Source Turns−off CC V Decreasing Level at Which the Current Source Turns− Decreasing ...

TEMPERATURE (°C) Figure 3. HV Pin Leakage Current vs. Temperature 9.85 100 kHz 9.80 9.75 60 kHz 9.70 9.65 9.60 40 kHz 9.55 9.50 9.45 − ...

TEMPERATURE (°C) Figure 9. V Latchoff vs. Temperature CC 60 Source Sink 10 0 − TEMPERATURE (°C) Figure 11. DRV Source/Sink Resistances ...

INTRODUCTION The NCP1200 implements a standard current mode architecture where the switch−off time is dictated by the peak current setpoint. This component represents the ideal candidate where low part−count is the key parameter, particularly in low−cost AC−DC adapters, auxiliary supplies ...

Permanently force the V level above auxiliary winding. It will automatically disconnect the internal startup source and the IC will be fully self−supplied from this winding. Again, the total power drawn from the mains will significantly ...

Power Dissipation The NCP1200 is directly supplied from the DC rail through the internal DSS circuitry. The current flowing through the DSS is therefore the direct image of the NCP1200 current consumption. The total power dissipation can be evaluated using: ...

V CC 11.4 V 9.8 V 6.3 V Drv Internal Fault Flag Figure 20. If the fault is relaxed during the V If the fault persists when V CC Calculating the V Capacitor CC As the above section describes, the ...

Figure 21. A negative spike takes place on the Bulk capacitor at the switch−off sequence Simple and inexpensive cures exist to prevent from internal parasitic SCR activation. One of them consists in inserting a resistor in series with the high−voltage ...

R7 L5 330 4.7 mF 4.7 mF 400 V 400 V Universal Input L6 R9 330 mH 10 Figure 24. A typical AC−DC wall adapter showing the reduced part count due to the NCP1200 T1: ...

Improving the Output Drive Capability The NCP1200 features an asymmetrical output stage used to soften the EMI signature. Figure 25 depicts the way the driver is internally made Figure ...

... SW NCP1200D60R2G NCP1200P100G F = 100 kHz SW NCP1200D100R2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/ the clamping ripple, could be around 20 V ripple Another option lies in implementing a snubber network which will damp the leakage oscillations but also provide more capacitance at the MOSFET’ ...

F −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M PACKAGE DIMENSIONS PDIP−8 P SUFFIX CASE 626−05 ISSUE http://onsemi.com 15 ...

... M S *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. The product described herein (NCP1200), may be covered by the following U.S. patents: 6,271,735, 6,362,067, 6,385,060, 6,429,709, 6,587,357. There may be other patents pending. ...