12V Automotive LED - Relay - Motor Control Multichannel low and high side SPI Driver IC TLE75008-ESD (SPIDER Plus) - Open Load

Open online SPICE simulator circuit link: atv_12v_LED_lighting_valve_motor_driver_spider_TLE75602-ESH_open_load.TSC

Coding tables for SPI registers

Application notes

12 V Automotive LED, Relay & Motor Control Smart Switch
SPI Driver IC TLE75602-ESH (SPIDER+)

Open Load at ON Diagnosis

The PSpice model has implemented the thermal behavior for one JEDEC standard: 2s2p.
Change the value of model parameter THERMAL_MODEL accordingly:
THERMAL_MODEL=1 - 2s2p PCB
THERMAL_MODEL=0 - self-heating deactivated

- Change simulation time:
"Analysis->Transient: Start - End Display"
- Double click on the green window to enter design criteria
- Click on "Run" and Simulate Transient

The TLE75602-ESH is a 2 channel low-side and 6 configurable channel Smart SPI Switch in
PG-TSDSO-24 package providing embedded protective functions. It is specially
designed to control relays and LEDs in automotive and industrial applications.
A serial peripheral interface (SPI) is utilized for control and diagnosis of the loads
as well as of the device. For direct control and PWM there are two input pins available
connected to two outputs by default. Additional or different outputs can be controlled
by the same input pins (programmable via SPI).

This test bench is configured to detect Open Load at ON state for Auto-Configurable
channels used as High-Side switches.
- Channel 3 is configured as High-Side switch (open load at ON is detected)
- Channel 4 is configured as Low-Side switch (open load at ON is not detected)

The two channels are turned on after 1 ms and remain on. At the 3 ms timestamp an open
load error is induced on channel 3 and at timestamp 5 ms an open load error is induced on
channel 4. The error is detected on channel 3 but not on channel 4, since it is configured
as a Low-Side switch.

Related SPI registers to Open Load at ON diagnosis:
- DIAG_OLONEN_MUX: OL at ON direct channel diagnosis activation
- DIAG_OLON_OUTn: OL at ON flag

Switching channels in parallel
HWCR_PAR_reg register coding

HWCR_PAR0=1 CH0 & CH2
HWCR_PAR1=1 CH1 & CH3
HWCR_PAR2=1 CH4 & CH6
HWCR_PAR3=1 CH5 & CH7

HWCR_PAR_reg | HWCR_PAR3 HWCR_PAR2 HWCR_PAR1 HWCR_PAR0
0 | 0 0 0 0
1 | 0 0 0 1
2 | 0 0 1 0
3 | 0 0 1 1
4 | 0 1 0 0
5 | 0 1 0 1
6 | 0 1 1 0
7 | 0 1 1 1
8 | 1 0 0 0
..............|........................................
14 | 1 1 1 0
15 | 1 1 1 1

Binary coded signals

Fault flag (OT or OVL): ERRn_reg
Fault latch clear: HWCR_OCL_reg
Open Load Detection in OFF-State: DIAG_IOL_reg
Output Status Monitor: DIAG_OSM_reg
Open Load at ON state: DIAG_OLON_OUTn_reg
Bulb Inrush Mode: BIM_OUTn_reg
PWM Generator channel control: PWM_OUTn_reg
PWM Generator channel mapping: PWM_MAP_reg

CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0 | signal
0 0 0 0 0 0 0 0 | 0
0 0 0 0 0 0 0 1 | 1
0 0 0 0 0 0 1 0 | 2
0 0 0 0 0 0 1 1 | 3
0 0 0 0 0 1 0 0 | 4
0 0 0 0 0 1 0 1 | 5
0 0 0 0 0 1 1 0 | 6
0 0 0 0 0 1 1 1 | 7
0 0 0 0 1 0 0 0 | 8
................................|........
1 1 1 1 1 1 1 0 | 254
1 1 1 1 1 1 1 1 | 255