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TPS53353 датащи(PDF) 19 Page - Texas Instruments |
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TPS53353 датащи(HTML) 19 Page - Texas Instruments |
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19 / 37 page ![]() 19 TPS53353 www.ti.com SLUSAK2C – AUGUST 2011 – REVISED FEBRUARY 2016 Product Folder Links: TPS53353 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated Switching frequency versus output current in the light load condition is a function of L, VIN, and VOUT, but it decreases almost proportionally to the output current from the IOUT(LL) given in Equation 7. For example, it is 60 kHz at IOUT(LL)/5 if the frequency setting is 300 kHz. 7.4.4 Forced Continuous Conduction Mode When the MODE pin is tied to PGOOD through a resistor, the controller keeps continuous conduction mode (CCM) in light load condition. In this mode, switching frequency is kept almost constant over the entire load range which is suitable for applications need tight control of the switching frequency at a cost of lower efficiency. |
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