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STGAP1S Datasheet(PDF) 44 Page - STMicroelectronics

No. de pieza STGAP1S
Descripción Electrónicos  gapDRIVE™: galvanically isolated single gate driver
PDF  67 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STGAP1S Datasheet(HTML) 44 Page - STMicroelectronics

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DocID027190 Rev 3
Figure 21. SPI daisy chain connection example
In case a bootstrap capacitor and a diode are used to generate the VH supply voltage for
the high-side drivers, it is recommended to have one dedicated SD line for all of the high-
side drivers and another dedicated SD line for all of the low-side drivers. An example of
such topology is shown in Figure 22.
Figure 22. SPI daisy chain connection example when bootstrap technique is used for high-side
drivers
μC
MOSI
MISO
CK
Device 1
Device 2
Device N
SD
SDO
CK
CS
SDI
I
S
O
L
A
T
I
O
N
CS
SD
SD
SDO
CK
CS
SDI
I
S
O
L
A
T
I
O
N
SD
SDO
CK
CS
SDI
I
S
O
L
A
T
I
O
N
μC
MOSI
MISO
CK
SD
SDO
CK
CS
SDI
VH
VL
GNDISO
I
S
O
L
A
T
I
O
N
VH_HS1
Cboot_HS1
SD
SDO
CK
CS
SDI
VH
VL
GNDISO
I
S
O
L
A
T
I
O
N
VH_LS
SD
SDO
CK
CS
SDI
VH
VL
GNDISO
I
S
O
L
A
T
I
O
N
VH_HS2
Cboot_HS2
SD
SDO
CK
CS
SDI
VH
VL
GNDISO
I
S
O
L
A
T
I
O
N
VH_LS
GNDiso
GNDiso
SD_HS
SD_LS
CS



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