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USB6B1RL Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte USB6B1RL
Spiegazioni elettronici  DATA LINES PROTECTION
PDF  9 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

USB6B1RL Scheda tecnica(HTML) 2 Page - STMicroelectronics

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USB6Bx
2/9
Fig. A1 :
Lw
VI/O
ESD
SURGE
GND
I/O
+Vcc
Vf
Lw di
dt
Lw di
dt
Vcl+ = Vcc+Vf+ Lw
di
dt
surge >0
-Vf- Lw
di
dt
surge <0
Vcl- =
t
tr=1ns
Vcc+Vf
Lw di
dt
Vcl+
POSITIVE
SURGE
-Lw
di
dt
t
tr=1ns
-Vf
Vcl-
NEGATIVE
SURGE
The USB6Bx is particularly optimized to perform
surge protection based on the rail to rail topology.
The clamping voltage VCL can be estimated as follow:
VCL+=Vcc+VF
for positive surges
VCL -=-VF
for negative surges
with: VF =Vt + rd.Ip
(VF forward drop voltage) / (Vt forward drop
threshold voltage)
Note: the estimations do not take into account
phenomena due to parasitic inductances.
SURGE PROTECTION
TECHNICAL INFORMATION



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