Infineon CoolGaN IGI60F1414A1L, Manual, Page: 4 / 27

Application Note 4 of 27 V 1.0
2021-04-30
CoolGaN™ IPS half-bridge evaluation board with IGI60F1414A1L
Functional description
2 Functional description
For a typical double-pulse testing Figure 2 shows the proper configuration with this hardware. The 5 V power
supply provides the circuit power which also powers the IPS logic section and the isolated gate driver power
supply. A 0-400 V power supply provides the DC bus voltage and the input PWM signal is provided by a lab pulse
generator. A test inductor is needed to connect from the DC bus to the switch-node output. An oscilloscope is
used to observe and measure the inductor current (with a current probe), switch-node voltage or any other
signal on the hardware board.
Table 2 includes all the available test points.
The inductor can be connected to either the positive DC bus (shown in Figure 2 ), and for inverting double-pulse
test, as shown in Figure 3 , it can be connected to negative bus (V
in-
). In this case the high-side is the active
switch, and the low-side is the freewheeling synchronous rectifier.
This evaluation board can also be configured as a buck, boost, or inverter topology. See section 4.2 for further
details.
Figure 2 Evaluation board typical application example (double-pulse test)
Figure 3 Evaluation board connected for inverted double-pulse test
Switching States