NCL30083BDMR2G ON Semiconductor, NCL30083BDMR2G Datasheet
NCL30083BDMR2G
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NCL30083BDMR2G Summary of contents
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... V Under Voltage Lockout ♦ CC Thermal Shutdown ♦ This document contains information on a product under development. ON Semiconductor reserves the right to change or discontinue this product without notice. © Semiconductor Components Industries, LLC, 2013 February, 2013 − Rev. P2 http://onsemi.com Micro8 DM SUFFIX CASE 846A ...
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Figure 1. Typical Application Schematic for NCL30083 Table 1. PIN FUNCTION DESCRIPTION Pin No Pin Name Function 1 SD Thermal Fold−back and shutdown 2 ZCD Zero Crossing Detection 3 CS Current sense 4 GND − 5 DRV Driver output 6 ...
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Over Voltage Protection Over Temperature Protection SD Thermal V TF Foldback Qdrv Zero Crossing Detection ZCD Aux. Winding Short Circuit Prot. V offset_OK VIN Line Feedforward V CS Leading Constant−Current Edge Blanking Enable Max. Peak Current Limit CS Short Protection ...
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Table 2. MAXIMUM RATINGS TABLE Symbol V Maximum Power Supply voltage, VCC pin, continuous voltage CC(MAX) I Maximum current for VCC pin CC(MAX) V Maximum driver pin voltage, DRV pin, continuous voltage DRV(MAX) I Maximum current for DRV pin DRV(MAX) ...
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Table 3. ELECTRICAL CHARACTERISTICS For min/max values T = −40°C to +125°C, Max T J Description STARTUP AND SUPPLY CIRCUITS Supply Voltage Startup Threshold Minimum Operating Voltage Hysteresis V – V CC(on) CC(off) Internal logic reset Over Voltage Protection VCC ...
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Table 3. ELECTRICAL CHARACTERISTICS For min/max values T = −40°C to +125°C, Max T J Description ZERO VOLTAGE DETECTION CIRCUIT ZCD threshold voltage ZCD threshold voltage (Note 4) ZCD hysteresis (Note 4) Threshold voltage for output short circuit or aux. ...
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Table 3. ELECTRICAL CHARACTERISTICS For min/max values T = −40°C to +125°C, Max T J Description VALLEY SELECTION Valley thresholds valley transition at LL and valley transition ...
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T , JUNCTION TEMPERATURE (°C) J Figure 3. V vs. Junction Temperature CC(on) 27.80 27.75 27.70 27.65 27.60 27.55 27.50 −40 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 9. I vs. Junction Temperature CC2 1.000 0.995 0.990 0.985 0.980 −40 − JUNCTION ...
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T , JUNCTION TEMPERATURE (°C) J Figure 15. t vs. Junction Temperature BLANK 255 254 253 252 251 250 249 −40 − JUNCTION ...
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T , JUNCTION TEMPERATURE (°C) J Figure 21. V vs. Junction Temperature REF10 55.0 54.5 54.0 53.5 53.0 52.5 52.0 −40 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 27. V vs. Junction Temperature HL 28.0 27.5 27.0 26.5 26.0 −40 − JUNCTION ...
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T , JUNCTION TEMPERATURE (°C) J Figure 33. V vs. Junction VLY4−2/5−3 Temperature −40 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 39. V vs. Junction VLY13−11/15−12 Temperature 2.46 2.45 2.44 2.43 2.42 −40 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 45. t vs. Junction Temperature recovery 86.5 86.0 85.5 85.0 84.5 84.0 83.5 83.0 −40 − ...
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T , JUNCTION TEMPERATURE (°C) J Figure 51. V vs. Junction Temperature BO(off) The NCL30083 implements a current−mode architecture operating in quasi−resonant mode. Thanks to proprietary circuitry, the controller ...
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Constant Current Control Figure 54 portrays the primary and secondary current of a flyback converter in discontinuous conduction mode (DCM). Figure 53 shows the basic circuit of a flyback converter. V bulk R C clp Clamping network DRV Figure 53. ...
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I (t) pri t Figure 54. Flyback Currents and Auxiliary Winding Voltage in DCM Internal Soft−Start At startup or after recovering from a fault, there is a small internal soft−start of 40 ms. In addition, during startup, as the output ...
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Figure 55. Startup Simulation Showing the Natural Soft−start Cycle−by−Cycle Current Limit When the current sense voltage exceeds the internal threshold V , the ...
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CS LEB1 + Rsense − Vcontrol + − V ILIMIT LEB2 + − V CS(stop) Figure 56. Winding Short Circuit Protection, Max. Peak Current Limit Circuits Thermal Fold−back and Over Voltage / Over Temperature Protection The thermal fold−back circuit reduces ...
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At startup, when V reaches V CC CC(on) not allowed to start pulsing for at least 180 ms in order to allow the SD pin voltage to reach its nominal value OVP VCC Vdd Dz I OTP(REF) ...
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CC(on) V CC(off) V CC(reset) V DRV V > OVP V controller stops SD switching V OVP V SD(clamp) V out Figure 59. OVP with SD Pin Chronograms 4−s Timer 4−s timer has elapsed: ...
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CC(on) V CC(off) V CC(reset) V DRV V < OTP(off) V controller stops SD switching V TF(start) V TF(stop) V OTP(off) I out Figure 60. Thermal Fold−back / OTP Chronograms Soft−Start The NCL30083 provides a ...
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Step Dimming The step dimming function decreases the output current from 100 its nominal value in discrete steps. There are 5 steps in total. Table 4 shows the different steps value and the corresponding output current set−point. ...
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V Over Voltage Protection (Open LED Protection output load is connected to the LED power supply, the controller must be able to safely limit the output voltage excursion. 40.0 V CC(OVP) 30.0 V CC(on) 20.0 10.0 V ...
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Vbulk VIN + − 2 LLine low 2 LLine high Table 5. VALLEY SELECTION I value at which the out controller changes valley (I decreasing) out 0 100% 75% 50% 30% 15 25−ms ...
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Zero Crossing Detection Block The ZCD pin allows detecting when the drain−source voltage of the power MOSFET reaches a valley. A valley is detected when the voltage on pin 1 crosses below the V internal threshold. ZCD(THD) At startup or ...
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Bulk rail VIN Brown−out In order to protect the supply against a very low input voltage, the NCL30083 features a brown−out circuit with a fixed ON/OFF threshold. The controller is allowed to start if a voltage higher than 1 V ...
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V BO(on) 900m V BO(off) 700m 500m 300m 8.00 50−ms Timer 6.00 4.00 2.00 0 46.1m 138m Figure 69. Brown−Out Chronograms (Valley Fill circuit is used) V CC(on) V ...
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CS Pin Short Circuit Protection Normally, if the CS pin or the sense resistor is shorted to ground, the Driver will not be able to turn off, leading to potential damage of the power supply. To avoid this, the NCL30083 ...
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Timer has finished counting OVP2 or V _OVP CC 4−s Timer OVP2 or WOD_SCP or Aux_SCP or V _OVP CC With states: Reset → Controller is reset, I Stop → Controller is ON, DRV is not switching, t Run → ...
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Timer has finished counting V < CC(reset) OVP2 or V 4−s CC Timer OVP2 or V _OVP CC Latch OTP or WOD_SCP or Aux_SCP With states: Reset → Controller is reset, I Stop → Controller is ON, DRV ...
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... PLANE A 0.038 (0.0015 *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 Micro8t CASE 846A−02 ISSUE H NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. ...
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... ORDERING INFORMATION Device Package Marking NCL30083ADMR2G NCL30083BDMR2G †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. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’ ...