M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 453

• 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

(internal signal)
(internal signal)
TOQnm signal
TOQnm signal
(5) Dead-time control in case of incorrect setting
Remark
Dead-time
Dead-time
counter m
pin output
pin output
counter m
pin output
pin output
TOQnBm
TOQnTm
TOQnBm
TOQnTm
Usually, the TOQnm (internal signal) output of TMQn changes only once during dead-time counting, only in the
vicinity of 0% and 100% output. This section shows an example where the TQnCCR0 register (carrier cycle)
and TQnDTC register (dead-time value) are incorrectly set. If these registers are incorrectly set, the TOQnm
(internal signal) output of TMQn changes more than once during dead-time counting. The following flowchart
shows the 6-phase PWM output wave in this case.
counter
counter
16-bit
16-bit
(b) When TQnOPT2.TQnDTM bit = 1, TQnCCR0 register = 0006H, TQnDTC register = 000FH,
(a) When TQnOPT2.TQnDTM bit = 0, TQnCCR0 register = 0006H, TQnDTC register = 000FH,
V850E/IA3: n = 0, m = 1 to 3
V850E/IA4: n = 0, 1, m = 1 to 3
000H
000H
001H 002H 003H 004H 005H 006H 007H 008H 009H 00AH 009H 008H 007H 006H 005H 004H 003H 002H 001H
Figure 10-14. Operation of Dead-Time Counter m (2)
001H 002H 003H 004H 005H 006H 001H 002H 003H 004H 005H 006H 007H 008H 009H 00AH 00BH 00CH 00DH 00EH 00FH
CHAPTER 10 MOTOR CONTROL FUNCTION
TQnCCRm register = 0004H
TQnCCRm register = 0002H
User’s Manual U16543EJ4V0UD
Counter cleared
Starts counting
down.
Output does not change
and dead-time counter m
continues counting down.
Counter is not cleared but continues counting.
000H
001H 002H 003H 004H 003H 002H 001H
000H
001H
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