TLD5541-1QV Datasheet, PDF (45/82 Pages) Infineon Technologies AG – H-Bridge DC/DC Controller with SPI Interface

H-Bridge DC/DC Controller with SPI Interface
TLD5541-1QV
Protection and Diagnostic Functions
10
Protection and Diagnostic Functions
10.1
Description
The TLD5541-1QV has integrated circuits to diagnose and protect against overvoltage, open load, short circuits
of the load and overtemperature faults. Furthermore, the device provides a 2 Bit information of I_LED, I_IN by the SPI
to the µC.
In IDLE state, only the Over temperature Shut Down, Over Temperature Warning, IVCC or IVCC_EXT
Undervoltage Monitor, V_DD or V_EN/INUVLO Undervoltage Monitor are reported according to specifications.
In Figure 26 a summary of the protection, diagnostic and monitor functions is displayed.
Overvoltages
Open Load
Short at the Load
Device
Overtemperature
Input
Undervoltage
Protection and Diagnostic
SPI
SPI
OR
SPI
SPI
OR
SPI STD
Diagnosis
No output current
Linear Regulators
OFF
(only IVCC disabled
in case of
overtemperature)
Read-back via
SPI
IOUTMON
IIN MO N
Monitoring
2BIT data
2BIT data
2BIT data
KILIS Factor 8
KILIS Factor 20
IOUT
IIN
Mode Indication
IOUT
IIN
Figure 26 Protection, Diagnostic and Monitoring Overview - TLD5541-1QV
Note: A device Overtemperature event overrules all other fault events!
Data Sheet
45
Rev. 1.0, 2016-05-20