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TLE9185QXV33 Datasheet(PDF) 47 Page - Infineon Technologies AG

Part # TLE9185QXV33
Description  BLDC Driver
Download  192 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLE9185QXV33 Datasheet(HTML) 47 Page - Infineon Technologies AG

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Datasheet
47
Rev. 1.0
2021-01-21
TLE9185QXV33
BLDC Driver
Gate Drivers
Turn-on without cross-current protection
If LSx is OFF (HBxMODE[1:0] = 11B), before the activation of HSx (HBxMODE[1:0] = 10B), then the high-side
MOSFET is turned on without cross-current protection (refer to Figure 24):
• right after the CSN rising edge and for a duration tHBxBLANKACTIVE + tFVDS:
– The gate of the high-side MOSFET is charged with the current ICHGSTx.
– The low-side MOSFET is kept OFF with the current -IHARDOFF.
• At the end of tFVDS:
– The drive current of the high-side MOSFET is reduced to IHOLD.
– The drive current of the low-side MOSFET is set to -IHOLD.
Figure 24
Turn-on of a high-side MOSFET without cross-current protection
Note:
The CSN rising edge must be synchronized with the device logic. Therefore SPI commands are
executed with a delay of up to 3 µs after the CSN rising edge.
Previous State
New State
HSx OFF
HSx ON
LSx OFF
LSx OFF
VS
SHx
HSx
LSx
GHx
GLx
IGHx
IGLx
SL
CSN
t
t
IGLx
t
IGHx
ICHGSTx
tHBxBLANK
Active
t
ICHGSTx
tFVDS
-IHOLD
IHOLD
t
-IHOLD
IHOLD
0
-IHARDOFF
Hard off
0
HSx internal
drive signal
LSx internal
drive signal
SPI Frame accepted
Turn on HSx


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