ncp1230a ON Semiconductor, ncp1230a Datasheet
ncp1230a
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ncp1230a Summary of contents
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... PFC circuit during standby, thus reducing the no load power consumption. The NCP1230A itself goes into soft skipping at light loads while limiting peak current (to 25% of nominal peak) so that no acoustic noise is generated. The NCP1230A has a high−voltage startup circuit that eliminates external components and reduces power consumption ...
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... V latch−off level which latches the output off until V is recycled. CC With a drive capability of +500 mA / −800 mA, the NCP1230A can drive large Qg MOSFETs. The controller accepts voltages and features a UVLO turn−off threshold of 7.7 V typical. ...
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Figure 2. Internal Circuit Architecture http://onsemi.com + + + 3 ...
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... ORDERING INFORMATION Device Order Number NCP1230AD65R2 NCP1230AD65R2G NCP1230AD100R2 NCP1230AD100R2G NCP1230AD133R2 NCP1230AD133R2G NCP1230AP65 NCP1230AP65G NCP1230AP100 NCP1230AP100G NCP1230AP133 NCP1230AP133G †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. Symbol ...
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ELECTRICAL CHARACTERISTICS unless otherwise noted.) CC PIN8 Characteristic Supply Section (All frequency versions, otherwise noted) Turn−On Threshold Level, V Going Minimum Operating Voltage after Turn−On V Decreasing Level at ...
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ELECTRICAL CHARACTERISTICS unless otherwise noted.) CC PIN8 Characteristic Internal Oscillator Oscillation Frequency, 65 kHz Version (V Oscillation Frequency, 100 kHz Version Oscillation Frequency, 133 kHz Version Internal Modulation Swing, in Percentage of ...
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TYPICAL PERFORMANCE CHARACTERISTICS 13 12.8 12.6 12.4 12.2 12.0 −50 − JUNCTION TEMPERATURE (°C) J Figure 3. V Threshold vs. Temperature CC(OFF) 6.0 5.8 5.6 5.4 5.2 5.0 −50 ...
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TYPICAL PERFORMANCE CHARACTERISTICS 4 − 0 3.5 3.0 2.5 2.0 −50 − JUNCTION TEMPERATURE (°C) J Figure 9. I Startup Current vs. Temperature C1 22 ...
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TYPICAL PERFORMANCE CHARACTERISTICS 9.0 8.0 −50 − JUNCTION TEMPERATURE (°C) J Figure 15. RPFC vs. Temperature 800 ...
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TYPICAL PERFORMANCE CHARACTERISTICS 110 106 102 −50 − JUNCTION TEMPERATURE (°C) J Figure 21. Frequency (100 kHz) vs. Temperature 10 9.0 ...
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TYPICAL PERFORMANCE CHARACTERISTICS 150 140 130 120 110 100 −50 − JUNCTION TEMPERATURE (°C) J Figure 27. Fault Time Delay vs. Temperature 3.50 3.25 3.00 2.75 2.50 100 125 150 −50 − ...
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... TV, and computer monitors. The NCP1230A can be connected directly to a high voltage source providing lossless startup, and eliminating external startup circuitry. In addition, the NCP1230A has a PFC_V output pin which provides the bias supply power CC for a Power Factor Correction controller, or other logic ...
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... I = Peak primary current Current sense resistor Feedback divider ratio. SkipLevel + 3V @ 25% + 0.75V where: where the power level where the NCP1230A will go into in the skip mode L = Primary inductance NCP1230A controller frequency http://onsemi.com 13 Figure 31 0.75 ...
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... Example assume we are using the 65 kHz version of the NCP1230A kHz the dv/dt of the ramp is 130 mV/ms. Assuming we are designing a FLYBACK converter which has a primary inductance, Lp, of 350 mH, and the SMPS has http://onsemi.com ...
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... If the 125 msec timer expires while the NCP1230A is in the Skip Mode, SW1 opens and the PFC_Vcc output will shut down and will not be activated until the fault goes away and the power supply resumes normal operations ...
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The latch−off phase can also be initiated, more classically, when Vcc drops below UVLO (7.7 V typical). During this fault detection method, the controller will not wait for the Regulation 12 PWM CC 7.7 V ...
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... Vccoff (12.6 V typically), the current source is turned off reducing the amount of power being dissipated in the chip. The NCP1230A then turns on the drive output to the external MOSFET in an attempt to increase the output voltage and charge up the Vcc capacitor through the Vaux winding in the transformer ...
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Vdd 20k 55k 25k (Fresh PON (OCP) Current Max I P Sense 2.5 ms Figure 41. Soft−Start is Activated during a Startup Sequence, an OCP Condition, or ...
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... Vcc capacitor. When nominal switching frequency. The sweep sawtooth is internally generated and modulates the clock up and down with period. Figure 42 illustrates the NCP1230A behavior: 65 kHz 67.6 kHz 5 ms Vcc drops below 4 ...
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... 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 ...
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... The product described herein (NCP1230A), may be covered by the following U.S. patents: 6,271,735, 6,362,067, 6,385,060, 6,597,221. There may be other patents pending. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...