ncp1216a ON Semiconductor, ncp1216a Datasheet
ncp1216a
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ncp1216a Summary of contents
Page 1
... No Auxiliary Winding Operation • Current−Mode Control with Adjustable Skip−Cycle Capability • Internal Ramp Compensation • Limited Duty Cycle to 50% (NCP1216A Only) • Internal 1.0 ms Soft−Start (NCP1216A Only) • Built−In Frequency Jittering for Better EMI Signature • Auto−Recovery Internal Output Short−Circuit Protection • ...
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... Adj Adjust the Skipping Peak Current 2 FB Sets the Peak Current Setpoint 3 CS Current Sense Input 4 GND 5 Drv Generates the V NCP1216, NCP1216A *See Application Section NCP1216 1 8 Fosc = 35kHz Adj Vcc GND Drv R comp + Figure 1 ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NCP1216, NCP1216A Skip Cycle Comparator Internal V ...
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... CC min−max always ensure an hysteresis of 2 OFF ON 2. Maximum value 0° Minimum value for T = 125°C. J NCP1216, NCP1216A (For typical values T = 25°C, for min/max values T J Pin = 65 kHz SW = 100 kHz SW = 133 kHz kHz SW = 100 kHz ...
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... Default Skip Mode Level Pin 1 Internal Output Impedance INTERNAL RAMP COMPENSATION Internal Ramp Level @ 25°C (Note 4) Internal Ramp Resistance to C Pin 1.0 MW resistor is connected to the ground for the measurement. NCP1216, NCP1216A = 25°C, for min/max values T J Pin Symbol OSC NCP1216 NCP1216A 2 − ...
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... TEMPERATURE (°C) Figure 5. VCC vs. Temperature ON 2.80 2.60 133 kHz 2.40 2.20 100 kHz 2.00 1.80 65 kHz 1.60 1.40 1.20 1.00 − TEMPERATURE (°C) Figure 7. I vs. Temperature CC2 NCP1216, NCP1216A TYPICAL CHARACTERISTICS 14.0 13.5 13.0 12.5 12.0 11.5 11.0 100 125 −25 0 Figure 4. VCC 1400 1300 1200 1100 1000 900 65 kHz 800 700 600 500 100 125 − ...
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... Sink 5 0 − TEMPERATURE (°C) Figure 11. Drive Sink and Source Resistance vs. Temperature 1.20 1.15 1.10 1.05 1.00 − TEMPERATURE (°C) Figure 13. V vs. Temperature skip NCP1216, NCP1216A 400 350 300 250 200 150 100 100 125 −25 1.13 1.08 1.03 0.98 0.93 75 100 125 −25 0 Figure 12. Current Sense Limit vs. Temperature 75 ...
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... TEMPERATURE (°C) Figure 15. NCP1216A Max Duty−Cycle vs. Temperature −25 NCP1216, NCP1216A 3.10 3.05 3.00 2.95 2.90 2.85 2.80 2.75 2.70 100 125 −25 0 Figure 16 100 TEMPERATURE (°C) Figure 17. High Voltage Current Source (@ vs. Temperature CC http://onsemi.com 100 125 TEMPERATURE (° ...
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... CS pin. Sub−harmonic oscillations in Continuous Conduction Mode (CCM) can thus be compensated via a single resistor. NCP1216, NCP1216A APPLICATION INFORMATION Over Current Protection (OCP): By continuously monitoring the FB line activity, NCP1216 enters burst mode as soon as the power supply undergoes an overload. The device enters a safe low power operation, which prevents from any lethal thermal runaway ...
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... Please see the “Power Dissipation” section for a complete design example and discover how a resistor can help to heal the NCP1216 heat equation. NCP1216, NCP1216A Application note AND8069/D details tricks to widen the NCP1216 driving implementation, in particular for large Q MOSFETs. This document can be downloaded at www.onsemi.com/pub/Collateral/AND8069− ...
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... If this IC enters skip cycle mode with a bunch length over a recurrent period of 100 ms, then the total power transfer is: 0.1 + 400 mW. 4 NCP1216, NCP1216A To better understand how this skip cycle mode takes place, a look at the operation mode versus the FB level immediately gives the necessary insight: FB ...
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... VAC rail, the maximum rectified voltage can 350 VDC. However, as the characterization curves show, the current consumption drops at a higher junction temperature, which quickly occurs NCP1216, NCP1216A due to the DSS operation. In our example 50°C, I ambient 600 V MOSFET ...
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... The required time CC depends on the startup sequence of your system, i.e. when NCP1216, NCP1216A During the startup phase, the peak current is pushed to the maximum until the output voltage reaches its target and the feedback loop takes over. This period of time depends on normal output load conditions and the maximum peak current allowed by the system. The time− ...
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... V ) due to the diode bridge. Also, f the power dissipation of this resistor is extremely small since it only heats up during the startup sequence. NCP1216, NCP1216A internal parasitic SCRs are triggered, engendering irremediable damages to the low impedance path is offered between V (eq. 19) often the seat of such spurious signals, the high− ...
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... Figure 27. A simple resistor in series avoids any latchup in the controller Soft−Start − NCP1216A only The NCP1216A features an internal 1.0 ms soft−start activated during the power on sequence (PON). As soon as V reaches V , the peak current is gradually CC CCOFF increased from nearly zero up to the maximum clamping level (e ...
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... NCP1216AD133R2G NCP1216AP65 NCP1216AP65G NCP1216AP100 NCP1216AP100G NCP1216AP133 NCP1216AP133G †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. NCP1216, NCP1216A Version Marking 65 kHz 16D06 65 kHz 16D06 100 kHz 16D10 100 kHz ...
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... H D 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. NCP1216, NCP1216A PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE 0.10 (0.004) ...
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... Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com NCP1216, NCP1216A PACKAGE DIMENSIONS PDIP−7 P SUFFIX CASE 626B−01 ...