Application Note
12 of 27
V 1.0
2021-04-30
CoolGaN™ IPS half-bridge evaluation board with IGI60F1414A1L
Setup and use
4.5
Power-up and power-down sequencing
To power up the board, make sure to turn-on the 5 V power supply. Then ramp up the DC bus from zero to the
desired voltage (maximum 450 V). Depending to the load, adjust the current limit. To power down the
hardware, reduce the DC bus to zero and then turn-off the 5 V supply.
4.6
Verifying and adjusting deadtime
For adjusting and trimming the deadtime, refer to section 4.6 in reference [1].
and
show
the adjusted 100 ns deadtime in rising and falling edge of the PWM after trimming (default setting).
4.7
Test inductor recommendation
A good high-frequency capable inductor is used for testing for best results. We recommend a low-loss inductor
with high saturation current (>25 A) and self-resonant frequency >20 MHz. Micrometals T-series toroidal core
with wire winding in a single-layer is recommended for clean observation.
Figure 12
Measuring deadtime on the rising edge of PWM