UPD16878 Datasheet, PDF (27/32 Pages) NEC – MONOLITHIC QUAD H BRIDGE DRIVER CIRCUIT

µPD16878
RELATION BETWEEN ROTATION ANGLE, PHASE CURRENT, AND VECTOR QUANTITY
(64-DIVISION MICRO STEP)
(Values of µPD16878 for reference)
Step
Rotation angle (θ )
A phase current
MIN.
TYP.
MAX.
θ0
0
−
0
−
θ1
5.6
2.5
9.8
17.0
θ2
11.3
12.4
19.5
26.5
θ3
16.9
22.1
29.1
36.1
θ4
22.5
31.3
38.3
45.3
θ5
28.1
40.1
47.1
54.1
θ6
33.8
48.6
55.6
62.6
θ7
39.4
58.4
63.4
68.4
θ8
45
65.7
70.7
75.7
θ9
50.6
72.3
77.3
82.3
θ 10
56.3
78.1
83.1
88.1
θ 11
61.9
83.2
88.2
93.2
θ 12
67.5
87.4
92.4
97.4
θ 13
73.1
90.7
95.7
100.7
θ 14
78.8
93.2
98.1
103
θ 15
84.4
−
100
−
θ 16
90
−
100
−
Remark These data do not indicate guaranteed values.
B phase current
MIN.
TYP.
MAX.
−
100
−
−
100
−
93.2
98.1
103
90.7
95.7
100.7
87.4
92.4
97.4
83.2
88.2
93.2
78.1
83.1
88.1
72.3
77.3
82.3
65.7
70.7
75.7
58.4
63.4
68.4
48.6
55.6
62.6
40.1
47.1
54.1
31.3
38.3
45.3
22.1
29.1
36.1
12.4
19.5
26.5
2.5
9.8
17.0
−
0
−
Vector quantity
TYP.
100
100.48
100
100.02
100.02
99.99
99.98
99.97
99.98
99.97
99.98
99.99
100.02
100.02
100
100.48
100
Data Sheet S15974EJ1V0DS
27