Step Number

PWM Duty Cycle (%)

Full

1/2

1/4

1/8

1/16

1/32

INH1/

INH2/

PHA

PHB

PHC

PHD

Step Angle (º )

117

97.0

24.4

1

0

1

0

329.06

59

118

95.7

29.0

1

0

1

0

331.88

119

94.2

33.7

1

0

1

0

334.69

15

30

60

120

92.4

38.3

1

0

1

0

337.50

121

90.4

42.8

0

1

0

1

340.31

61

122

88.2

47.1

0

1

0

1

343.13

123

85.8

51.4

0

1

0

1

345.95

31

62

124

83.1

55.6

0

1

0

1

348.75

125

80.3

59.6

0

1

0

1

351.56

63

126

77.3

63.4

0

1

0

1

354.38

127

74.1

67.2

0

1

0

1

357.19

0

0

0

0

0

0

70.7

70.7

0

1

0

1

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NOTE:

In Table4 the PWM duty cycles are indicated for Fast Decay mode which causes INH1/ and INH2/ outputs to be chopped.

In Slow Decay mode INH1/ and INH2/ outputs remain high while PHA, PHB, PHC and PHD outputs are chopped.

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