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TPS61372 Folha de dados(PDF) 13 Page - Texas Instruments

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Nome de Peças TPS61372
Descrição Electrónicos  16-V, 3.6-A Synchronous Boost with Load Disconnect
PDF  35 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

TPS61372 Folha de dados(HTML) 13 Page - Texas Instruments

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=
1
K
R
C
¦
´
´
OFF
T
T =
= K
R
C
1
D
´
´
-
(
)
IN
OUT
V
1
D
=
V
-
(
)
OFF
T
= T
1
D
´
-
IN
OFF
OUT
K
R
C
V
T
=
V
´
´
´
VOUT
0
TON
TOFF
IN
OFF
OUT
K
R
C
V
T
=
V
´
´
´
TOFF
OFF
IN
I
T
= K
V
C
´
´
´
SW
TOFF
V
I
=
R
SW
TOFF
VIN
L
RUP
RDOWN
VOUT
+
Gm
R
+
COMP
TOFF
TON
TOFF
TON
C
VCOMP
SW
K x VIN
VIN
ISENSE
HS FET
LS FET
Driver
Driver
13
TPS61372
www.ti.com
SLVSEE7 – JUNE 2018
Product Folder Links: TPS61372
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
Device Behavior Description (continued)
Figure 10. Adaptive Off Time with Peak Current Control Topology
(1)
(2)
(3)
For the CCM operation, as shown in Equation 1, VSW = VOUT during off time:
Figure 11. Switching Cycle at CCM
The frequency at CCM operation can be calculated by Equation 4, Equation 5, Equation 6, Equation 7,
Equation 8:
(4)
(5)
(6)
(7)
(8)
Where
K is the resistor divider ratio of VIN



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