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MCT8317A Datasheet(PDF) 20 Page - Texas Instruments

Part # MCT8317A
Description  MCT8317A High Speed Sensorless Trapezoidal Control Integrated FET BLDC Driver
PDF  161 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

MCT8317A Datasheet(HTML) 20 Page - Texas Instruments

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8.3.6 Cross Conduction (Dead Time)
The device is fully protected against any cross conduction of the MOSFETs. The high-side and low-side
MOSFETs are carefully controlled to avoid any shoot-through events by inserting a dead time (tdead). This is
implemented by sensing the gate-source voltage (VGS) of the high-side and low-side MOSFETs and ensuring
that the VGS of high-side MOSFET has reached below turn-off levels before switching on the low-side MOSFET
of same half-bridge as shown in Figure 8-6 and Figure 8-7 and vice versa.
VM
OUTx
GND
Gate
Control
Gate
Control
VGS
VGS
VGS_HS
VGS_LS
t
DEAD
Figure 8-6. Cross Conduction Protection
OUTx HS
OUTx LS
OUTx
Gate
(VGS_HS)
OUTx
Gate
(VHS_LS)
tDEAD
Time
10%
10%
Figure 8-7. Dead Time
MCT8317A
SLLSFQ2 – JANUARY 2023
www.ti.com
20
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