TLE75080-EMH Datasheet, PDF (9/80 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75080-EMH
Overview
This device is designed for low supply voltage operation, therefore being able to keep its state at low battery
voltage (V_S ≥ 3.0 V). The SPI functionality, including the possibility to program the device, is available only when
the digital power supply is present (see Chapter 6 for more details).
The TLE75080-EMH is equipped with two input pins that are connected to two outputs, making them controllable
even when the digital supply voltage is not available. With the Input Mapping functionality it is possible to connect
the input pins to different outputs, or assign more outputs to the same input pin. In this case more channels can
be controlled with one signal applied to one input pin.
In Limp Home mode (Fail-Safe mode) the input pins are directly routed to channels 2 and 3. When IDLE pin is
“low”, it is possible to activate the two channels using the input pins independently from the presence of the digital
supply voltage.
The device provides diagnosis of the load via Open Load at ON state, Open Load at OFF state (with
DIAG_OSM.OUTn bits) and short circuit detection. For Open Load at OFF state detection, a internal current source
I_OL can be activated via SPI.
Each output stage is protected against short circuit. In case of Overload, the affected channel switches OFF when
the Overload Detection Current I_L(OVLn) is reached and can be reactivated via SPI. In Limp Home mode operation,
the channels connected to an input pin set to “high” restart automatically after Output Restart time t_RETRY(LH) is
elapsed. Temperature sensors are available for each channel to protect the device against Over Temperature.
The power transistors are built by N-channel power MOSFET with one central chargepump . The inputs are ground
referenced TTL compatible. The device is monolithically integrated in Smart Power Technology.
Data Sheet
9
Rev. 1.0, 2016-06-22