THREE-PHASE WAVEFORM MODE
10.3 Three-phase mode 0
10.3 Three-phase mode 0
10.3.1 Setting for three-phase mode 0
Explanation of the triangular wave modulation output and saw-tooth-wave modulation output in three-phase
mode 0 is described below. Table 10.3.1 lists the differences between the triangular wave modulation
output and the saw-tooth-wave modulation output (in view of software).
Table 10.3.1 Differences between triangular wave modulation output and saw-tooth-wave modulation
output (in view of software)
Saw-tooth-wave modulation output
Triangular wave modulation output
Trigger of dead-time timer
Falling edge of timers A0 through A2 Falling and Rising edges of timers A0
through A2
Reversed at each timer A3 interrupt Not reversed.
request occurrence.
Contents of output polarity set
buffer
Figures 10.3.1 and 10.3.2 show an initial setting example for registers relevant to three-phase mode 0,
Figure 10.3.3 shows a data-updating example in three-phase mode 0.
Note that the initial output level at the three-phase waveform output pin is undefined. Be sure to start the
three-phase waveform output (in other words, the waveform output is enabled.) after the output level at the
three-phase waveform output pin is stabilized.
7905 Group User’s Manual Rev.1.0
10-18
RENESAS [ RENESAS TECHNOLOGY CORP ]
