TLE75620-EST datasheet(24/81 Pages) INFINEON

24 / 81 page

Datasheet

Rev. 1.0

2017-11-23

TLE75620-EST

SPIDER+ 12V

Power Supply

6.1.1

Power-up

The Power-up condition is satisfied when one of the supply voltages (VS or VDD) is applied to the device and the

INn or IDLE pins are set to “high”. If VS is above the threshold VS(OP) or if VDD is above the threshold VDD(LOP) the

internal power-on signal is set.

6.1.2

Sleep mode

When TLE75620-EST 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 IVDD(SLEEP) and IVS(SLEEP), or

parameter ISLEEP 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 IVDD(IDLE) and

IVS(IDLE), or by parameter IIDLE 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 VDD 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 TLE75620-EST when no Limp Home condition is set and it is

necessary to drive some or all loads. Voltage levels of VDD and VS influence the behavior as described at the

beginning of Chapter 6. Device current consumption is specified with IVDD(ACTIVE) and IVS(ACTIVE) (IACTIVE for the

whole device). The device enters Active mode when IDLE pin is set to “high” and one of the input pins is set to

“high” or one OUT.OUTn bit is set to “1”. If HWCR.ACT is set to “0”, the device returns to Idle mode as soon as

all inputs pins are set to “low” and OUT.OUTn bits are set to “0”. If HWCR.ACT is set to “1”, the device remains

in Active mode independently of the status of input pins and OUT.OUTn bits. An undervoltage condition on

VDD supply brings the device into Idle mode, if all input pins are set to “low”. Even if the registers MAPIN0 and

MAPIN1 are both set to “00H” but one of the input pins INn is set to “high”, the device goes into Active mode.

6.1.5

Limp Home mode

TLE75620-EST enters Limp Home mode when IDLE pin is “low” and one of the input pins is set to “high”,

switching ON the channel connected to it. SPI communication is possible but only in read-only mode (SPI

registers can be read but cannot be written). More in detail:

• UVRVS and LOPVDD are set to “1”

• MODE bits are set to “01B” (Limp Home mode)

• TER bit is set to “1” on the first SPI command after entering Limp Home mode. Afterwards it works

normally

• OLON and OLOFF bits is set to “0”

• ERRn bits work normally

• DIAG_OSM.OUTn bits can be read and work normally

• All other registers are set to their default value and cannot be programmed as long as the device is in Limp

Home mode

See Table 6 for a detailed overview of supply voltage conditions required to switch ON channels 2 and 3 during

Limp Home. All other channels are OFF.

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