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參數(shù)資料
| 型號(hào)： | TB6520PG |
| 廠商： | Toshiba Corporation |
| 英文描述： | PWM TYPE 3−PHASE FULL−WAVE SENSORLESS MOTOR CONTROLLER |
| 文件頁(yè)數(shù)： | 4/19頁(yè) |
| 文件大?。?/td> | 391K |
| 代理商： | TB6520PG |
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TB6520P/PG
2006-3-6
4
FUNCTIONAL DESCRIPTION
1. Crystal oscillator (XT,
XT
)
The crystal oscillator is connected as shown in the following diagram:
The start transfer frequency fst and maximum transfer frequency fmx depend upon crystal oscillation
frequency fx. Please make sure of the start operation in determining your frequency.
fst = fx / 2
18
fmx = fx / 2
10
PWM chopping frequency fp is also determined as follows:
fp = fx / 256
2. Lead angle control
Operated at 0 lead angle during forced start transfer, and automatically switched to 15 lead angle upon
normal transfer.
3. PWM Duty Control
PWN duty is controlled through A
D conversion of the
analog voltage that is input to the DUTY pin.
z
0 (V)
≤
V
DUTY
≤
V
AD (L)
z
V
AD (L)
< V
DUTY
< V
AD (H)
(1 / 128 to 127 / 128)
DUTY 0%
n the figure to the right
DUTY 100% (127 / 128)
z
V
AD (H)
≤
V
DUTY
≤
V
DD
4. FG output
FG, which represents the frequency of motor rotation, is output from the position detection signal input.
z
When stopped : LOW
z
When start is forcibly transferred : LOW
z
When normally rotated 1
pulse signal is output in one electric cycle.
4
polar motor
8
polar motor
2 pulses / rotation
4 pulses / rotation
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