TB6584AFNG(O,EL) Toshiba, TB6584AFNG(O,EL) Datasheet - Page 11

• Manufacturer Part Number: TB6584AFNG(O,EL)
• Description: Motor / Motion / Ignition Controllers & Drivers 3-Phase Brushless Driver IC 45V 1.8A
• Manufacturer: Toshiba

Specifications of TB6584AFNG(O,EL)

• Product Category: Motor / Motion / Ignition Controllers & Drivers
• Rohs: yes

3. Dead Time Insertion
4. Lead Angle Control
To prevent a short-circuit between external low-side and high-side power elements during sine-wave PWM
drive, a dead time is digitally inserted between the turn-on of one side and the turn-off of the other side.
(The dead time is also implemented at the full duty cycle during square-wave drive.)
The lead angle can be adjusted between 0° and 58° in 32 separate steps according to the induced voltage
level on the LA input, which works with 0 to 5 V.
T
T
(i.e., CR oscillator frequency).
0 V = 0°
5 V = 58° (A lead angle of 58° is assumed when the LA voltage exceeds 5 V.)
OFF
OFF
Step
10
0
1
2
3
4
5
6
7
8
9
= 9/f
∼ − 2.0 μs when f
osc
LA (V)
0.00
0.16
0.31
0.47
0.63
0.78
0.94
1.09
1.25
1.41
1.56
osc
Lead angle
10.75
13.18
14.21
16.55
17.58
(cross conduction protection)
0.00
0.94
3.18
4.68
7.11
9.44
= 4.5 MHz, where f
(V, W)
(° )
(Y Z)
X
U
Step
11
12
13
14
15
16
17
18
19
20
21
Sample evaluation
T
OFF
LA (V)
osc
1.72
1.88
2.03
2.19
2.34
2.50
2.66
2.81
2.97
3.13
3.28
11
is the reference clock frequency
Lead angle
19.92
21.79
23.47
25.90
27.12
29.55
30.86
33.01
34.41
36.75
39.27
(° )
Step
T
22
23
24
25
26
27
28
29
30
31
32
OFF
LA (V)
3.44
3.59
3.75
3.91
4.06
4.22
4.38
4.53
4.69
4.84
5.00
Lead angle
TB6584AFNG
40.58
43.01
44.32
46.75
48.25
50.49
52.74
54.05
56.48
56.48
56.48
(° )
2010-05-27