Renesas M32R/ECU Series, User Manual

Page: 444 / 839

10
10-201
MULTIJUNCTION TIMERS
10.8 TOU (Output-Related 24-Bit Timer)
32180 Group User’s Manual (Rev.1.0)
10.8.19 Example Application for Using the 32180 in Motor Control
The three-channel TOU timers incorporated in the 32180 help to reduce software burdens during motor control.
The following shows an example application for using these 32180 timers in motor control.
The three-phase motor control waveform is produced by starting TOU in accordance with the fixed 20 kHz TOU
startup timing generated by TID. The single-shot PWM function included in TOU enables any desired output
waveform to be configured easily by storing waveform data only when the data needs to be rewritten. Note that
the transistor shorting prevention time can be provided by changing the set time of TOU in software.
32180
Power-MOS
Motor
U
/U
V
/V
W
/W
TOU
TOU
TOU
TOU
TOU
TOU
Circuit board
Figure 10.8.23 System Configuration Diagram
clk
TOUn_0
clk
TOUn_1
clk
TOUn_2
clk
TOUn_3
clk
TOUn_4
clk
TOUn_5
F/F
F/F
F/F
F/F
F/F
F/F
TO(U)
PRS
EN
EN
EN
EN
EN
EN
clk
udf
TIDn
Single-shot PWM
Single-shot PWM
Single-shot PWM
Single-shot PWM
Single-shot PWM
Single-shot PWM
Fixed period
udf
udf
udf
udf
udf
udf
TO(/U)
TO(V)
TO(/V)
TO(W)
TO(/W)
20 kHz generated
Startup
Figure 10.8.24 Timer Connections When Used for Three-Phase Motor Control
U
V
W
20KHz
TOU start
TO(U)
TO(/U)
TO(V)
TO(/V)
TO(W)
TO(/W)
Delay
Single shot
Delay Single shot
: Shorting prevention time
Figure 10.8.25 Conceptual Diagram of Motor Control