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LM5145 Datasheet(PDF) 30 Page - Texas Instruments

Part # LM5145
Description  LM25139 42V, Synchronous Buck DC/DC Controller With Dual Random Spread Spectrum for Advanced EMI Mitigation
PDF  60 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM5145 Datasheet(HTML) 30 Page - Texas Instruments

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ωp2=
1
RCOMP× CCOMP CHF+CBW ≅ 1
RCOMP×CCOMP
(29)
The EA compensation components create a pole close to the origin, a zero, and a high-frequency pole. Typically,
RCOMP << RO-EA and CCOMP >> CBW and CHF, so the approximations are valid.
Error Amplifier Model
VREF
COMP
FB
CHF
CBW
RO-EA
–
+
z1
p2
p1
RFB1
VOUT
gm
RFB2
CCOMP
RCOMP
AGND
Zero
Pole
Figure 7-3. Error Amplifier and Compensation Network
LM25139
SLVSJ80 – OCTOBER 2025
www.ti.com
30
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Copyright © 2025 Texas Instruments Incorporated
Product Folder Links: LM25139



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