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LM22675QMRX-ADJ 数据表(PDF) 11 Page - Texas Instruments

部件名 LM22675QMRX-ADJ
功能描述  LM22675/LM22675Q 42V, 1A SIMPLE SWITCHER Step-Down Voltage Regulator with
Download  23 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LM22675QMRX-ADJ 数据表(HTML) 11 Page - Texas Instruments

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FREQUENCY (Hz)
-ADJ
-5.0
LM22675
www.ti.com
SNVS591K – 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
SNVA364 shows how to perform a loop transfer function measurement with only an oscilloscope and function
generator.
Copyright © 2008–2013, Texas Instruments Incorporated
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