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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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LM25183 Arkusz danych(PDF) 24 Page - Texas Instruments |
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LM25183 Arkusz danych(HTML) 24 Page - Texas Instruments |
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24 / 39 page  I OUT1 = 0.3 A C IN 2 x 22 F 10 F T 1 V IN = 4.5 V...42 V 1 : 1.5 : 1.5 R SET 12.1 k: R FB 102 k: D CLAMP D F R TC 221 k: D OUT1 18 V 9 PH V OUT1 = 15 V D OUT2 18 V SW FB VIN EN/UVLO TC GND SS/BIAS RSET LM25183 D FLY1 C OUT1 C OUT2 D FLY2 I OUT2 = ±0.3 A V OUT2 = ±15 V 20 V 2 x 22 F 24 LM25183 SNVSBJ3 – APRIL 2020 www.ti.com Product Folder Links: LM25183 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated 8.2.3 Design 2: PSR Flyback Converter With Dual Outputs of 15 V and –15 V at 0.3 A The schematic diagram of a dual-output flyback converter intended for isolated IGBT and SiC MOSFET gate drive power supply applications is given in Figure 34. Figure 34. Schematic for Design 2 With VIN(nom) = 24 V, VOUT1 = 15 V, VOUT2 = –15 V, IOUT = 0.3 A 8.2.3.1 Design Requirements The required input, output, and performance parameters for this application example are shown in Table 4. Table 4. Design Parameters DESIGN PARAMETER VALUE Input voltage range (steady state) 4.5 V to 42 V Output 1 voltage and current (at VIN ≥ 24 V) 15 V, 0.3 A Output 2 voltage and current (at VIN ≥ 24 V) –15 V, 0.3 A Input UVLO thresholds 4.5 V on, 4 V off Output voltage regulation ±2% The target full-load efficiency of this LM25183 design is 90% based on a nominal input voltage of 24 V and isolated output voltages of 15 V and –15 V sharing a common return. The selected flyback converter components are cited in Table 5, including the following: • A multi-winding flyback transformer • Input and output capacitors • Flyback rectifying diodes • A flyback converter IC |
Podobny numer części - LM25183 |
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Podobny opis - LM25183 |
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