M30843FJFP

Manufacturer Part NumberM30843FJFP
ManufacturerRenesas Electronics Corporation.
M30843FJFP datasheets

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Page 213/529:

Sawtooth Waveform as a Carrier Wave

Download datasheet (4Mb)Embed
PrevNext
M
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C
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Sawtooth Waveform as a Carrier Wave

Sawtooth Wave
Signal Wave
Timer B2
Timer A4 Start
(1)
Trigger Signal
Timer A4
(1)
One-Shot Pulse
U-Phase
(1)
Output Signal
U-Phase
(1)
Output Signal
U-Phase
INV14 = 0
("L" active)
U-Phase
U-Phase
INV14 = 1
("H" active)
U-Phase
INV14: Bits in INVC1 register
NOTES:
1. Internal signals. See Figure 16.1.
The above applies to INVC0 = 01XX110X
The examples of PWM output change are
- Default value of the IDB0 and IDB1 registers: DU0=0, DUB0=1, DU1=1, DUB1=1
They are changed to DU0=1, DUB0=0, DU1=1, DUB1=1 by the timer B2 interrupt.
Figure 16.9 Sawtooth Wave Modulation Operation
Page 192
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16. Three-Phase Motor Control Timer Functions
C
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Rewrite the IDB0 and IDB1 registers
Dead time
Dead time
and INVC1 = 000XXX00
2
2
f o
4
9
5
Transfer the register values to
the three-phase shift register
(X varies depending on each system.)

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