MC34262 ON Semiconductor, MC34262 Datasheet
MC34262
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MC34262 Summary of contents
Page 1
... MC34262, MC33262 Power Factor Controllers The MC34262/MC33262 are active power factor controllers specifically designed for use as a preconverter in electronic ballast and in off−line power converter applications. These integrated circuits feature an internal startup timer for stand−alone applications, a one quadrant multiplier for near unity power factor, zero current ...
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... V (Note 2), for typical values Symbol V FB Reg line OH(ea) V OL(ea) V FB(OV 1.05 V th( +85°C for MC34262 high = +105°C for MC33262. http://onsemi.com 2 Symbol Value ( 500 O V −1 −10 P 800 D R 100 ...
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... Power Supply Zener Voltage ( mA Maximum package power dissipation limits must be observed. 5. Adjust V above the startup threshold before setting 0°C for MC34262 low = −40°C for MC33262 Pin 4 Threshold Pin 3 (V Pin2 * V th( This parameter is measured with and V ...
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... Figure 4. Voltage Feedback Input Threshold Change versus Temperature 120 Phase 100 Transconductance 3 100 k 300 k f, FREQUENCY (Hz) Figure 6. Error Amp Transconductance and Phase versus Frequency MC34262, MC33262 0.08 V Pin 3.5 V 0.07 Pin 3.25 V Pin 2 0. 3.0 V Pin 2.75 V Pin 2.75 V Pin 2 0 ...
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... T , AMBIENT TEMPERATURE (°C) A Figure 10. Zero Current Detector Input Threshold Voltage versus Temperature 90% 10% 100 ns/DIV Figure 12. Drive Output Waveform MC34262, MC33262 900 800 800 700 700 600 Current 600 500 500 400 − 55 − 100 125 Figure 9 ...
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... AC Line Voltage 0 AC Line Current Figure 17. Uncorrected Power Factor The MC34262, MC33262 are high performance, critical conduction, specifically preconverters. These devices provide the necessary features required to significantly enhance poor power factor loads by keeping the ac line current sinusoidal and in phase with the line voltage. ...
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... Operating Description The MC34262, MC33262 contain many of the building blocks and protection features that are employed in modern high performance current mode power supply controllers. There are, however, two areas where there is a major difference when compared to popular devices such as the Rectifiers ...
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... V Pin 2 th(M) Zero Current Detector The MC34262 operates as a critical conduction current mode controller, whereby output switch conduction is initiated by the Zero Current Detector and terminated when the peak inductor current reaches the threshold level established by the Multiplier output. The Zero Current Detector initiates the next on− ...
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... C crosses the upper UVLO threshold. 4 Drive Output The MC34262/MC33262 contain a single totem−pole output stage specifically designed for direct drive of power The application circuits shown in Figures 19, 20 and 21 reveal that few external components are required for a complete power factor preconverter. Each circuit is a peak detecting current− ...
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... The following converter characteristics must be chosen: V − Desired output voltage O I − Desired output current O DV − Converter output peak−to−peak ripple voltage O MC34262, MC33262 Calculation Required Converter Output Power Peak Inductor Current Inductance on Switch On−Time for initial (LL) Switch Off−Time ...
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... This data was taken with the test set−up shown in Figure 24 Coilcraft N2881−A Primary: 62 turns AWG Secondary: 5 turns AWG Core: Coilcraft PT2510 Gap: 0.072″ total for a primary inductance (L Heatsink = AAVID Engineering Inc. 590302B03600, or 593002B03400 MC34262, MC33262 36V + Zero Current 1.2V Detector 6.7V + 1.6V/ 1 ...
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... This data was taken with the test set−up shown in Figure 24 Coilcraft N2880−A Primary: 78 turns AWG Secondary: 6 turns AWG Core: Coilcraft PT4215, EE 42−15 Gap: 0.104″ total for a primary inductance (L Heatsink = AAVID Engineering Inc. 590302B03600 MC34262, MC33262 36V + Zero Current 1.2V Detector 6.7V + 1.6V/ 1 ...
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... Coilcraft P3657−A Primary: 38 turns Litz wire, 1300 strands of #48 AWG, Kerrigan−Lewis, Chicago, IL Secondary: 3 turns AWG Core: Coilcraft PT4220, EE 42−20 Gap: 0.180″ total for a primary inductance (L Heatsink = AAVID Engineering Inc. 604953B04000 Extrusion MC34262, MC33262 36V + Zero Current 1.2V Detector 6. ...
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... Figures 19 and 20. It has a minimum inductance and a maximum current rating of 2.0 A. Coilcraft CMT4−17−9 was used to test Figure 21. It has a minimum inductance and a maximum current rating of 9.0 A. Circuit conversion efficiency h (%) was calculated without the power loss of the RFI filter. MC34262, MC33262 (Figure 20 Circuit) 432 V ...
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... Figure 27. Current Waveform Spike Suppression A narrow turn−on spike is usually present on the leading edge of the current waveform and can cause circuit instability. The MC34262 provides an internal RC filter with a time constant of 220 ns. An additional external RC filter may be required in universal input applications that are above 200 ...
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... MC34262, MC33262 (Bottom View) NOTE: Use 2 oz. copper laminate for optimum circuit performance. Figure 29. Printed Circuit Board and Component Layout (Circuits of Figures 20 and 21) http://onsemi.com (Top View) 4.5″ 16 3.0″ ...
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... MC33262DR2 MC33262DR2G MC33262P MC33262PG MC33262CDR2 MC33262CDR2G †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. MC34262, MC33262 T = 0°C to +85° 0°C to +85° −40°C to +105°C A http://onsemi ...
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... F −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M MC34262, MC33262 PACKAGE DIMENSIONS PDIP−8 P SUFFIX PLASTIC PACKAGE CASE 626−05 ISSUE http://onsemi.com 18 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. ...
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... ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. The products described herein (MC34262, MC33262), may be covered by the following U.S. patent: 5,073,850. 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 ...