TLE8110EE Datasheet, PDF (15/72 Pages) Infineon Technologies AG – Smart Multichannel Low Side Switch with Parallel Control and SPI Interface

FLEX
Smart Multi-Channel Switch
Power Supply
5
Power Supply
5.1
Description Power Supply
The TLE8110EE is supplied by analogue power supply line V_DD which is used for the analogue functions of the
device, such as the gate control of the power stages. The digital power supply line V_CC is used to supply the digital
part and offers the possibility to adapt the logic level of the serial output pins to lower logic levels.
RST
VCC
VCC
Under
Voltage
Monitor
or
VDD
EN
VDD
Under
Voltage
Monitor
or
Input
and
Serial
Inter-
face
input
register
diagnosis ^Logic
register
control
unit
control
register
analogue
control,
diagnostic
and protective
functions
Fault
Detection
Gate Control
OUTx
Figure 6 Block Diagram Supply and Reset
GND
Block_diag_Supply_Reset.vsd
Description Supply
The Supply Voltage Pins are monitored during the power-on phase and under normal operating conditions for
under voltage.
If during Power-on the increasing supply voltage exceeds the Supply Power-on Switching Threshold, the internal
Reset is released after an internal delay has expired.
In case of under voltage, a device internal reset is performed. The Switching Threshold for this case is the Power-
on Switching threshold minus the Switching Hysteresis.
In case of under voltage on the analogue supply line V_DD the outputs are turned off but the content of the registers
and the functionality of the logic part is kept alive. In case of under voltage on the digital supply V_CC line, a complete
reset including the registers is performed.
After returning back to normal supply voltage and an internal delay, the related functional blocks are turned on
again. For more details, refer to the chapter “Reset”
The device internal under-voltage set will set the TOR bit and the related bits in SDS (Short Diagnosis and Device
Status) to allow the micro controller to detect this reset. For more information, refer to the chapter “Control of the
Device”.
Figure 7 removed
Data Sheet
15
Rev. 1.0, 2009-06-15