VSINT is the supply for the voltage regulator VCC1
VS is the supply for the charge pump and for the gate drivers.
Having two separate inputs for VS and VSINT enables to buffer more easily VSINT, in order to maintain VCC1 in case of a drop of the battery voltage.



Indeed, the possible high load current drawn by the half-bridges does not discharge Cin2, which is the buffer capacitor for VSINT, thanks to the decoupling diode Drev1.
Note: Drev1 is also used as reverse battery protection for VSINT. Show Less

VSINT is the supply for the voltage regulator VCC1
VS is the supply for the charge pump and for the gate drivers.
Having two separate inputs for VS and VSINT enables to buffer more easily VSINT, in order to maintain VCC1 in case of a drop of the battery voltage.



Indeed, the possible high load current drawn by the half-bridges does not discharge Cin2, which is the buffer capacitor for VSINT, thanks to the decoupling diode Drev1.
Note: Drev1 is also used as reverse battery protection for VSINT. Show Less

A drop of the battery voltage while the module is in Sleep Mode leads to a higher device current consumption.
The scenario can be the following:
1. The microcontroller sends the TLE9185xx to Sleep Mode, and goes itself in Sleep Mode
2. VS/VSINT drops below the monitoring threshold voltage VPOR,f and rises above the voltage VPOR,r. The TLE9185xx wakes up autonomously
3. Since the watchdog cannot be served, the microcontroller is still in Sleep Mode, after 4 consecutive watchdog failures, the TLE9185xx goes in Fail Safe Mode with higher device current consumption as expected in Sleep Mode without the microcontroller knowledge. Show Less

The TLE9185xx can supply the microcontroller through the interrupt (INTN) or reset (RSTN) pins in case a voltage drop of the battery voltage occurs while the module is in Sleep Mode:
1. The microcontroller sends the TLE9185xx into Sleep Mode and after it goes itself to Sleep Mode.
2. VS/VSINT drops below the monitoring threshold voltage*VPOR,f*and rises above the voltage*VPOR,r. The TLE9185xx wakes up autonomously
3. The internal power supply VCC1 is turned on, the TLE9185xx starts the long open widow (tLW). During this time (tLW) there is no reset and no interrupt, the pins RSTN and INTN are pulled to high
4. The microcontroller is supplied through those pins. If the power management device does not keep the microcontroller reset low, then the microcontroller would start to operate without external supervision.*
The microcontroller is now awake and can send the TLE9185xx again into Sleep Mode. Show Less

The device goes to Restart Mode or to Fail-Safe Mode (see the figures attached) when the following failure occurs:
- VCC1 undervoltage/overvoltage
- VCC1 short to GND
- TSD2 event
- 4 consecutive watchdog failures/single watchdog failure
- 4 consecutive VCC1 undervoltage events
- Sleep Mode entry without the wake-up source enabled
In Restart Mode and Fail-Safe Mode the SPI is not available.
The microcontroller input must be connected to the reset pin RSTN. In this way the microcontroller monitors this pin and realizes that the device cannot receive any SPI frame. A low level on RSTN, while the TLE9185 is supposed to be in normal mode, makes the microcontroller aware that the SPI communication is not possible.
If the device is in Fail-Safe Mode the microcontroller can wake it up. Show Less

The TLE9185QXV33 can be waked up upon an edge of the WK4 pin if the wake-up source is enabled before going to Sleep Mode. *The Wake-up sequence is described below:
1) Enable WK4 while in Normal Mode
(WK_EN = 01B with WK_BNK = 011B)
Keep the WK4 pin high (external pull-up to VSINT)

2) Microcontroller sends the device to Sleep Mode

3) RSTN pin monitor for t ≥ (tRD1 or tRD2)

4) The 3.3V µC must pull the pin WK4
down to a voltage V < VWKx_th,f

5) TLE9185QXV33 wakes up and goes to Restart Mode Show Less

The TLE9185QX can be woken up upon an edge of the WK4 pin if the wake-up source is enabled before going to Sleep Mode. The Wake-up sequence is described below:
1) TLE9185QX wakes up and goes to Restart Mode
The 5V microcontroller must pull
the pin WK4 up to a voltage V > VWKx_th,r
RSTN pin monitor for t ≥ (tRD1 or tRD2)
Enable WK4 while in Normal mode
(WK_EN = 01B with WK_BNK = 011B)
Keep the WK4 pin low (external pull-down to GND)

2) Microcontroller sends the device to Sleep Mode

3) RSTN pin monitor for t ≥ (tRD1 or tRD2)

4) The 5V microcontroller must pull
the pin WK4 up to a voltage V > VWKx_th,r

5) TLE9185QX wakes up and goes to Restart Mode Show Less