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AN4192 Fiches technique(PDF) 23 Page - STMicroelectronics

No de pièce AN4192
Description  In the latest generation of CPUs for modern desktop and notebook platforms
PDF  47 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4192 Fiches technique(HTML) 23 Page - STMicroelectronics

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AN4192
Low-side FET selection
Doc ID 023820 Rev 1
23/47
In Figure 24 and 25, two phase node waveforms of high-CRSS (CRSS = 315 pF) and low-
CRSS (CRSS = 190 pF) devices are compared. These FETs are mounted on a 3-phase VRM
(fSW = 500 kHz, VOUT = 1.4 V, RG,HS = RG,LS = 2.2 Ω, CSNUB = 4.7 nF, RSNUB = 2.2 Ω) and
the load current is 80 A.
Figure 24.
Low-CRSS LS FET phase node waveform @ 80 A
AM16468V1



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