Detailed description

Detailed description of the HIL Infineon TriBoard interface

The board features the following key sections, as shown in Figure 1.

  1. HIL Analog connector
  2. HIL Digital connector
  3. Analog stage
  4. TriBoard FTSH plug connectors
  5. Measurement terminals
Figure 1. HIL Infineon TriBoard interface layout

HIL Analog I/O

32 HIL Analog Outputs (AO) and 2 HIL Analog Input (AI) are routed from the DIN41612 socket (HIL side) to the FTSH connectors (TriBoard side).

Table 1. Analog signal routing
HIL Analog Output TriBoard analog input HIL Analog Input TriBoard Resolver PWM
AO1 AN46 AI1 P00.5
AO2 AN47 AI2 P00.6
AO3 AN43
AO4 AN42
AO5 AN30
AO6 AN39
AO7 AN29
AO8 AN38
AO9 AN15
AO10 AN14
AO11 AN13
AO12 AN12
AO13 AN10
AO14 AN9
AO15 AN6
AO16 AN5
AO17 AN28
AO18 AN11
AO19 AN4
AO20 AN27
AO21 AN26
AO22 AN37
AO23 AN1
AO24 AN25
AO25 AN23
AO26 AN33
AO27 AN34
AO28 AN22
AO29 AN19
AO30 AN36
AO31 AN35
AO32 AN18

The HIL Analog Outputs undergo a level shifting process from a range of +/-10 V to 0-5 V. This level shifting is performed to ensure compatibility with the analog inputs of the TriBoard. The specific equation used for this level shifting process can be expressed as follows:

  • V = V ao ₕᵢₗ 4 + 2.5

The resolver PWM signal outputs undergo digital-to-analog conversion via a digital-to-analog converter (DAC). The resulting analog signals are subsequently routed to analog input pins on the Hardware-in-the-Loop (HIL) device.

In addition to routing the converted analog signal to an analog input pin on the HIL device, the digital signals from the PWM signal are also routed to the digital input pins of the HIL device.

HIL Digital I/O

28 HIL Digital Inputs (DI) and 16 HIL Digital Outputs (DO) are routed from the DIN41612 socket (HIL side) to the FTSH connector (TriBoard side).

Table 2. HIL Digital Output signal routing
HIL Digital Output signal TriBoard Digital Input signal
DO1 P34.1
DO2 P34.2
DO3 P34.3
DO4 P34.4
DO5 P34.5
DO6 P21.6
DO7 P21.7
DO8 P21.2 (Emergency)
DO9 P21.3
DO10 P21.4
DO11 P21.5
DO12 P21.1
DO13 P21.0
DO14 ESR0#
DO15 ESR1#
DO16 PORST# (Reset)
Table 3. HIL Digital Input signal routing
HIL Digital Input signal TriBoard Digital Output signal
DI1 P02.0
DI2 P02.1
DI3 P02.2
DI4 P02.3
DI5 P02.4
DI6 P02.5
DI7 P02.9
DI8 P02.10
DI9 P02.11
DI10 P02.6
DI11 P02.7
DI12 P02.8
DI13 P00.6 (Resolver PWM)
DI14 P00.5 (Resolver PWM)
DI15 P22.2
DI16 P22.3
DI17 P22.0
DI18 P22.1
DI19 P22.11
DI20 P22.10
DI21 P22.9
DI22 P22.8
DI23 P22.4
DI24 P22.5
DI25 P22.6
DI26 P22.7
DI27 P20.13
DI28 P20.12


While various evaluation boards share a common pinout, TriBoard Interface was tested with TC399 and designed with the following TriBoards in mind:

Power Supply

By default, the TriBoard Interface receives power from the HIL (Hardware-in-the-Loop) device's +12 V supply through a diode. However, the TriBoard package is equipped with a 12 V power adapter and has the capability to operate in standalone mode, where it can be powered directly using the provided adapter.

The TriBoard's maximum estimated power consumption at 12 V falls within the range of 0.5 A to 1 A. If the power consumption is 0.5 A or lower, it can be directly powered from the +12 V supplies of the HIL4 and HIL6 devices. In this case, there is no need for an external 12 V power adapter.

However, if the power consumption exceeds 0.5 A, the TriBoard can still be directly powered from the +12 V supply of the HIL6 device. Again, no external 12 V power adapter is required.

"Infineon" and "AURIXTM TriBoard" are registered trademarks of Infineon Technologies AG in Germany and/or other countries.