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TLE9185QXV33 Datasheet(PDF) 36 Page - Infineon Technologies AG

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

TLE9185QXV33 Datasheet(HTML) 36 Page - Infineon Technologies AG

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TLE9185QXV33
BLDC Driver
High-Voltage Wake Input
Datasheet
36
Rev.1.0
2021-01-21
7.2
High-Voltage Wake Function
7.2.1
Functional Description
The wake inputs pin are edge-sensitive inputs with a switching threshold of typically 3 V. Both transitions, high
to low and low to high, result in a signalization by the device. The signalization occurs either in triggering the
interrupt in Normal Mode and Stop Mode or by a wake up of the device in Sleep Mode and Fail-Safe Mode.
A filter time tFWKx is implemented to avoid an unintentional wake-up due to transients or EMC disturbances
in static sense configuration.
The filter time (tFWKx) is triggered by a level change crossing the switching threshold and a wake signal is
recognized if the input level will not cross again the threshold during the selected filter time.
Figure 18 shows a typical wake-up timing and filtering of transient pulses.
Figure 18 Wake-up Filter Timing for Static Sense
The wake-up capability for the WKx pin can be enabled or disabled via SPI command.
A wake event via the WKx pin can always be read in the register WK_STAT.
The actual voltage level of the WKx pin (low or high) can always be read in Normal Mode, Stop Mode and Init
Mode in the register WK_LVL_STAT.
7.2.2
Wake Input Configuration
To ensure a defined and stable voltage levels at the internal comparator input it is possible to configure
integrated current sources via the SPI register WK_CTRL.
Table 13
Pull-Up / Pull-Down Resistor
WKx_PUPD_
1
WKx_PUPD_
0
Current Sources Note
00
no current
source
WK input is floating if left open (default setting)
0
1
pull-down
WK input internally pulled to GND
VWKTh,f
t
VWKx
tFWK
No Wake Event
Wake Event
VWKth,f
tFWK
t
VINTN
tINTN


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