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UCC2540PWPR Datasheet(PDF) 11 Page - Texas Instruments |
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UCC2540PWPR Datasheet(HTML) 11 Page - Texas Instruments |
11 / 43 page UCC2540 SLUS539C − JUNE 2004 − REVISED OCTOBER 2008 11 www.ti.com APPLICATION INFORMATION Using UCC2540 as the Secondary-Side Post Regulator UCC2540 can also be used as a secondary-side post regulator (SSPR) for precision regulation of the auxiliary voltages of multiple output power supplies, as shown in Figure 4. The UCC2540 uses leading-edge modulation so that it is compatible with either voltage-mode or current-mode primary-side control converters using any topology such as forward, half-bridge or push-pull. C1 OUT1 OUT2 INPUT C2 Q2’ Q1’ NP1 NP2 Q1 Q2 L2 MAIN OUTPUT UCC2540 14 18 G2 G1 4 SYNCIN C3 Q6 Q5 PWM2 L3 AUX OUT1 PWM2 1 FB UCC3808x UDG−02145 VFB Figure 4. Multiple Output Converter with Primary Side Push−Pull Converter |
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