NCP1200AP40 ON Semiconductor, NCP1200AP40 Datasheet
NCP1200AP40
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NCP1200AP40 Summary of contents
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NCP1200A PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Standby Power Housed in SOIC−8 or PDIP−8 package, the NCP1200A enhances the previous NCP1200 series by offering a reduced optocoupler current together with an increased drive capability. Due to its ...
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EMI FILTER UNIVERSAL INPUT *Please refer to the application information section. PIN FUNCTION DESCRIPTION Pin No. Pin Name Function 1 Adj Adjust the skipping peak current 2 FB Sets the peak current setpoint 3 CS Current sense input 4 GND ...
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Adj 1 CURRENT SENSE 250 ns 3 L.E. GROUND V REF − MAXIMUM RATINGS Rating Power Supply Voltage Thermal Resistance Junction−to−Air, PDIP−8 ...
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ELECTRICAL CHARACTERISTICS unless otherwise noted.) CC Characteristic 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 ...
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TEMPERATURE (°C) Figure 3. HV Pin Leakage Current vs. Temperature 10.2 10.1 10.0 9.9 9.8 9.7 9.6 − TEMPERATURE (°C) Figure 5. V vs. Temperature ...
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TEMPERATURE (°C) Figure 9. V Latchoff vs. Temperature Source Sink 10 0 − TEMPERATURE (°C) Figure 11. Drive and ...
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... UC384X based supplies: timing components, feedback devices, low−pass filter and self−supply. This later point emphasizes the fact that ON Semiconductor’s NCP1200A does NOT need an auxiliary winding to operate: the product is naturally supplied from the high−voltage rail and delivers a V IC. This system is called the Dynamic Self− ...
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Figure 16. A simple diode naturally reduces the average voltage on pin 8 Skipping Cycle Mode The NCP1200A automatically skips switching cycles when the output power demand drops below a given level. This is accomplished by monitoring the FB ...
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M 200 M 100 M 0 315.40 Figure 19. The Skip Cycle Takes Place at Low Peak Currents which Guaranties Noise−Free We recommend a pin 1 operation between 400 mV and 1.3 V that will fix the skip peak ...
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Power Dissipation The NCP1200A is directly supplied from the DC rail through the internal DSS circuitry. The average current flowing through the DSS is therefore the direct image of the NCP1200A current consumption. The total power dissipation can be evaluated ...
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5.4 V Drv INTERNAL FAULT FLAG STARTUP PHASE Figure 21. If the fault is relaxed during the V If the fault still persists when V When this level crosses 5.4 V typical, the controller ...
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Protecting the Controller Against Negative Spikes and Turn−off Problems As with any controller built upon a CMOS technology the designer’s duty to avoid the presence of negative spikes on sensitive pins. Negative signals have the bad habit to ...
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A simple and inexpensive solution helps circumventing both problems, negative biasing, and gate high transient. It consists in a solution using one 1N4007 (or two in a series for safety) forcing the V capacitor does. Figure 24 shows the solution. ...
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... ORDERING INFORMATION Device Type NCP1200AP40 NCP1200AP40G kHz SW NCP1200AD40R2 NCP1200AP60 NCP1200AP60G kHz 60 kHz SW NCP1200AD60R2 NCP1200AD60R2G NCP1200AP100 NCP1200AP100G 100 kHz 100 kHz SW NCP1200AD100R2 NCP1200AD100R2G †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 ...
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... G C SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE DIMENSIONS SOIC−8 D SUFFIX CASE 751−07 ISSUE 0.10 (0.004 SOLDERING FOOTPRINT* 1 ...
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... American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 16 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS) ...