TLE75008-EMD_15 Datasheet, PDF (26/64 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75008-EMD
Power Supply
Table 7 shows the correlation between device operation modes, V_S and V_DD supply voltages, and state of the most
important functions (channels operativity, SPI communication and SPI registers).
Table 7
Operation
Mode
Sleep
Device function in relation to operation modes, V_S and V_DD voltages
Function
Undervoltage
condition on V_S1)
V_DD ≤ V_DD(UV)
Undervoltage
condition on V_S
V_DD > V_DD(UV)
V_S not in
undervoltage
V_DD ≤ V_DD(UV)
Channels
not available
not available
not available
SPI comm.
not available
not available
not available
SPI registers reset
reset
reset
Idle
Channels
not available
not available
not available
SPI comm.
not available
✔
not available
SPI registers reset
✔
reset
Active
Channels
not available
✔
✔ (IN pins only)
SPI comm.
not available
✔
not available
SPI registers reset
✔
reset
Limp Home Channels
not available
✔ (IN pins only) ✔ (IN pins only)
SPI comm.
not available
SPI registers reset
1) see Chapter 6.2.1 for more details
2) see Chapter 6.1.5 for a detailed overview
✔ (read-only)
✔ (read-only)²⁾
not available
reset
V_S not in
undervoltage
V_DD >V_DD(UV)
not available
not available
reset
not available
✔
✔
✔
✔
✔
✔ (IN pins only)
✔ (read-only)
✔ (read-only)²⁾
6.1.1 Power-up
The Power-up condition is satisfied when one of the supply voltages (V_S or V_DD) is applied to the device and the
INn or IDLE pins are set to “high”. If V_S is above the threshold V_S(OP) or if V_DD is above the threshold V_DD(LOP) the
internal power-on signal is set.
6.1.2 Sleep mode
When TLE75008-EMD is in Sleep mode, all outputs are OFF and the SPI registers are reset, independently from
the supply voltages. The current consumption is minimum. See parameters I_VDD(SLEEP) and I_VS(SLEEP), or parameter
I_SLEEP for the whole device.
6.1.3 Idle mode
In Idle mode, the current consumption of the device can reach the limits given by parameters I_VDD(IDLE) and I_VS(IDLE),
or by parameter I_IDLE for the whole device. The internal voltage regulator is working. Diagnosis functions are not
available. The output channels are switched OFF, independently from the supply voltages. When V_DD is available,
the SPI registers are working and SPI communication is possible. In Idle mode the ERRn bits are not cleared for
functional safety reasons.
6.1.4 Active mode
Active mode is the normal operation mode of TLE75008-EMD when no Limp Home condition is set and it is
necessary to drive some or all loads. Voltage levels of V_DD and V_S influence the behavior as described at the
beginning of Chapter 6. Device current consumption is specified with I_VDD(ACTIVE) and I_VS(ACTIVE) (I_ACTIVE for the
Data Sheet
26
Rev. 1.1, 2015-09-25