EVAL-IH-R5IPB-A-V1 Evaluation board
User Guide
Experimental results
5.1.2
Normal operation and change of output power
Table 2
Target output power according to the power setting
Power level setting
Target input power level (W)
1
1000
2
1200
3
1400
4
1600
5
1700
6
1900
7
2100
Starting from stand-by mode, by pressing the ON/OFF button once, the system turns on and performs a check
to verify the presence of a vessel on the resonant inductor. The detection process is repeated five times, once per
second. In case a vessel is detected, the output power level is automatically set to ‘5’, as also indicated by the
display, and the system starts the operation. In this condition, the target output power is 1700 W. In case there is
no vessel, the system returns to stand-by mode. While in operation, the output power of the system can be
increased and reduced by means of buttons P+ and P-. Table 2 shows the power levels and the corresponding
target output power.
During normal operation conditions the IEWS20R5135IPB is driven by the INN signal, as shown in Figure 11. When
the INN voltage changes from high to low, the IGBT is turned on, with a typical propagation delay of 700 ns; on
Figure 11
Normal operation of IEWS20R5135IPB: turn-off and turn-on INN-to-IC propagation delay.
IC (yellow curve, 20 A/div), VCE (cyan curve, 200 V/div) and INN (magenta curve, 1V/div),
time scale: 5 µs/div
Application Note
16 of 34
V 1.1
2019-11-25