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LM22678QTJ-ADJ 데이터시트(PDF) 11 Page - Texas Instruments |
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11 / 23 page 100 1k 10k 100k 1M 10M 0 5 10 15 20 25 30 35 40 FREQUENCY (Hz) -ADJ -5.0 LM22678 www.ti.com SNVS585K – SEPTEMBER 2008 – REVISED MARCH 2013 Alternatively, this pole should be placed between 1.5kHz and 15kHz and is given by the equation shown below: (9) The Q factor depends on the parasitic resistance of the power stage components and is not typically in the control of the designer. Of course, loop compensation is only one consideration when selecting power stage components; see Application Information for more details. Figure 14. Compensator Gain In general, hand calculations or simulations can only aid in selecting good power stage components. Good design practice dictates that load and line transient testing should be done to verify the stability of the application. Also, Bode plot measurements should be made to determine stability margins. Application note AN-1889 SNVA364shows how to perform a loop transfer function measurement with only an oscilloscope and function generator. Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM22678 |
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