Shown in, Figure 12-14, Figure 12-14. dead-time generators – Freescale Semiconductor MC68HC908MR32 User Manual

Page 128

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Pulse-Width Modulator for Motor Control (PWMMC)

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

128

Freescale Semiconductor

Figure 12-14. Dead-Time Generators

FAULT

POLA

RIT

Y

/OUT

PUT DRIV

E

PWMGEN<1:6>

PWMPAIR12

PWMPAIR34

PWMPAIR56

DEAD

-TIME

TOP/BOTT

OM

GENERA

TION

POSTDT (TOP)

T

O

P/BOT

T

OM

GE

NERATION

TOP/

BOTTOM

GENERAT

ION

TOP

BOTTOM

TOP

BOTTOM

TOP

BOTTOM

PWM1

PWM2

PWM3

PWM4

PWM5

PWM6

6

MUX

PWM (TOP)

OUTX

SELECT

PREDT (TOP)

MUX

PWM (TOP)

OUTX

SELECT

PREDT (TOP)

MUX

PWM (TOP)

OUTX

SELECT

PREDT (TOP)

DEAD-TIME

DEAD-TIME

POSTDT (TOP)

DEAD-TIME

DEAD-TIME

POSTDT (TOP)

DEAD-TIME

(TOP)

(TOP)

(TOP)

(PWM1)

(PWM2)

(PWM3)

(PWM4)

(PWM5)

(PWM6)

OUTPUT CONTROL

OUT

1

OUT

3

OUT

5

OUT

C

TL

OUT2

OUT4

OUT6

(OUTCTL)

CURRENT SENSING

PWM GENE

RATOR

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