TLE75080-EMH Datasheet, PDF (30/80 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75080-EMH
Power Supply
6.1.6 Definition of Power Supply modes transition times
The channel turn-ON time is as defined by parameter t_ON when TLE75080-EMH is in Active mode or in Limp Home
mode. In all other cases, it is necessary to add the transition time required to reach one of the two aforementioned
Power Supply modes (as shown in Figure 13).
init
t_SLEEP2IDLE
t_IDLE2SLEEP
Sleep
t_LH2SLEEP
t_SLEEP2LH
Idle
t_ACTIVE2SLEEP
Channel ON
t_{ON Limp Home}
t_ACTIVE2IDLE
t_IDLE2ACTIVE
Figure 13 Transition Time diagram
t_ON
Active
t_LH2ACTIVE
t_ACTIVE2LH
OpModesTimings.emf
6.2
Reset condition
One of the following 3 conditions resets the SPI registers to the default value:
• V_DD is not present or below the undervoltage threshold V_DD(UV)
• IDLE pin is set to “low”
• a reset command (HWCR.RST set to “1”) is executed
– ERRn bits are not cleared by a reset command (for functional safety)
– UVRVS and LOPVDD bits are cleared by a reset command
In particular, all channels are switched OFF (if there are no input pin set to “high”) and the Input Mapping
configuration is reset.
6.2.1
Undervoltage on V_S
Between V_S(UV) and V_S(OP) the undervoltage mechanism is triggered. If the device is operative and the supply
voltage drops below the undervoltage threshold V_S(UV), the logic set the bit UVRVS to “1”. As soon as the supply
voltage VS is above the minimum voltage operative threshold V_S(OP), the bit UVRVS is set to “0” after the first
Standard Diagnosis readout. Undervoltage condition on VS influences the status of the channels, as described in
Table 6. Figure 14 sketches the undervoltage behavior (the “V_S - V_DS” line refers to a channel which is
programmed to be ON).
Data Sheet
30
Rev. 1.0, 2016-06-22