TLE75602-ESH datasheet(51/82 Pages) INFINEON

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Datasheet

Rev. 1.0

2017-11-23

TLE75602-ESH

SPIDER+ 12V

Diagnosis

Figure 27 Output Status Monitor - concept (Auto-configurable channel as Low-Side)

In Standard Diagnosis the bit OLOFF represents the OR combination of all DIAG_OSM.OUTn bits for all

channels in OFF state which have the corresponding current source IOLactivated.

9.3

Open Load at ON

Each auto-configurable channel (when used as high-side switch) channel has the possibility of Open Load at

ON diagnosis, which can be controlled programming DIAG_OLONEN.MUX bits. By default after a reset Open

Load at ON diagnosis is not active. The device compares IL_Sn with IL(OL) and sets the DIAG_OLON.OUTn

accordingly:

• IL_Sn < IL(OL) → DIAG_OLON.OUTn = “1” if VOUTn_S > VOUT_S(OL)

9.3.1

Open Load at ON - direct channel diagnosis

When DIAG_OLONEN.MUX bits are programmed with a value corresponding to a channel (0010B → 0111B), the

internal multiplexer checks for Open Load at ON condition on the selected channel. It is recommended that

the channel is ON for at least tON before activating the diagnosis. After a time tOLONSET the corresponding

DIAG_OLON.OUTn bit for the selected channel is available. All the other bits in the DIAG_OLON register are

set to default (“0B”). The bits are updated every time the register is read.

When a channel is selected, the corresponding DIAG_OLON.OUTn bit content is mirrored also in the

Standard Diagnosis (bit OLON). In case of several register readouts in sequence the register content is updated

at every read request from micro-controller. See Figure 28 for further details.

OutStatMon_XS_LS.emf

Auto-configurable

Channel (as low-side)

GND

OUT_Dn

OUT_Sn

VDS

ROL

IOL

VDS(OL)

VDS < VDS(OL)

DIAG_OSM.OUTn = „1"

DIAG_OSM.OUTn

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