M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 447
M-V850E-IA4
Manufacturer Part Number
M-V850E-IA4
Description
KIT EVAL V850E IA4 UPD70F3186
Manufacturer
Renesas Electronics America
Specifications of M-V850E-IA4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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10.4.2 Dead-time control (generation of negative-phase wave signal)
(internal signal)
(internal signal)
TOQnm signal
TOQnm signal
(1) Dead-time control mechanism
Remark
Dead-time
Dead-time
counter m
counter m
pin output
pin output
pin output
pin output
TOQnBm
TOQnBm
TOQnTm
TOQnTm
In the 6-phase PWM output mode, compare registers 1 to 3 (TQnCCR1, TQnCCR2, and TQnCCR3) are used
to set the duty factor, and compare register 0 (TQnCCR0) is used to set the cycle. By setting these four
registers and by starting the operation of TMQ, three types of PWM output waves (basic 3-phase waves) with a
variable duty factor are generated. These three PWM output waves are input to the timer Q option unit
(TMQOPn) and their inverted signal with dead-time is created to generate three sets of (six) PWM waves.
The TMQOPn unit consists of three 10-bit counters (dead-time counters 1 to 3) that operate in synchronization
with the count clock of TMQn, and a TMQn dead-time compare register (TQnDTC) that specifies dead time. If
“a” is set to the TQnDTC register, the dead-time value is “a”, and interval “a” is created between a positive-
phase wave and a negative-phase wave.
counter
counter
16-bit
16-bit
V850E/IA3: n = 0, m = 1 to 3
V850E/IA4: n = 0, 1, m = 1 to 3
0000H
(a) When dead time is inserted (TQnDTC register = a)
a
0
Figure 10-8. PWM Output Wave with Dead Time (1)
(b) No dead time (TQnDTC register = 000H)
CHAPTER 10 MOTOR CONTROL FUNCTION
User’s Manual U16543EJ4V0UD
a
0
445
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