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UC3846N Datasheet(PDF) 12 Page - Texas Instruments |
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UC3846N Datasheet(HTML) 12 Page - Texas Instruments |
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12 / 24 page 
T T 2.2 fT (kHz) R (k ) C ( F) | : u P T ID Td( s) 145 C ( F) 3.6 ID RT (k ) ª º « » P P « » « » « » : ¬ ¼ UC1846, UC1847, UC2846 UC2847, UC3846, UC3847 SLUS352C – JANUARY 1997 – REVISED DECEMBER 2015 www.ti.com 8.2.2 Detailed Design Procedure This section details the design procedure based on the design requirements. 8.2.2.1 Design Switching Frequency Output deadtime is determined by the external capacitor, CT, according to the formula: where • ID = Oscillator discharge current at 25°C; typically is 7.5. (2) For large values of RT: τd (μs ) ≈145CT (μF). Oscillator frequency is approximated by the formula: (3) 8.2.2.2 Error Amplifier Output Configuration Figure 6. Error Amplifier Output Configuration 12 Submit Documentation Feedback Copyright © 1997–2015, Texas Instruments Incorporated Product Folder Links: UC1846 UC1847 UC2846 UC2847 UC3846 UC3847 |
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