TLD5541-1QV Datasheet, PDF (18/82 Pages) Infineon Technologies AG – H-Bridge DC/DC Controller with SPI Interface

H-Bridge DC/DC Controller with SPI Interface
TLD5541-1QV
Power Supply
LHI = LOW
& EN/INUVLO = HIGH
EN/INUVLO = LOW
Power-up
SLEEP
EN/INUVLO = LOW
EN/INUVLO = LOW
LHI = HIGH
& EN/INUVLO = HIGH
IDLE
LHI = HIGH
LIMP HOME
VIN = HIGH
& IVCC = HIGH
& IVCC_EXT = HIGH
& VDD = HIGH
& DVCCTRL.IDLE = LOW
VIN = LOW
or IVCC = LOW
or IVCC_EXT = LOW
or VDD = LOW
or DVCCTRL.IDLE = HIGH
EN/INUVLO = LOW
ACTIVE
LHI = LOW
LHI = HIGH
Figure 5 Simplified State Diagram
5.2
Different Possibilities to RESET the device
There are several reset triggers implemented in the device.
After any kind of reset, the Transmission Error Flag (TER) is set to HIGH.
Under Voltage Reset:
EN/INUVLO: When EN/INUVLO is below V_EN/INUVLOth (P_5.3.7), the SPI interface is not working and all the
registers are reset to their default values. In addition, the device enters SLEEP mode and the current consumption
is minimized.
VDD: When V_VDD is below V_VDD(UV) (P_5.3.6), the SPI interface is not working and all the registers are reset to their
default values.
Reset via SPI command:
There is a command available to RESET all registers to their default values (DVCCTRL.SWRST = HIGH).
Reset via Limp Home:
When Limp Home state is detected the registers are reset to the default values.
Data Sheet
18
Rev. 1.0, 2016-05-20