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MP3356 数据表(PDF) 9 Page - Monolithic Power Systems |
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MP3356 数据表(HTML) 9 Page - Monolithic Power Systems |
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9 / 10 page ![]() MP3356 – HIGH VOLTAGE PHOTO FLASH CHARGER AND IGBT DRIVER FOR DSC MP3356 Rev. 0.91 www.MonolithicPower.com 9 1/29/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. APPLICATION INFORMATION Charge Speed The output capacitor charging speed is determined by: LIM ch arge IN OUT I T N V V ∝ + Primary Inductance The primary inductance is calculated based on the minimum off time period: OUT min,off primary PEAK VT I NI ≥ VOUT: output voltage about 300V TMIN-OFF Minimum off time 200ns. IPEAK: primary peak current Turns Ratio The minimum turns ratio of the flyback transformer is obtained as: OUT ds IN V N VV ≥ − VDS: FET drain-source voltage VIN: Input voltage 3~5V Output Diode Selection The reverse voltage of the output diode is determined by: DOUT IN VV NV = + |
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