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參數(shù)資料
| 型號： | TPIC43T01 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Three-Phase Brushless Motor RPM Controller |
| 中文描述： | 三相無刷電機 RPM 控制器 |
| 文件頁數(shù)： | 18/27頁 |
| 文件大?。?/td> | 376K |
| 代理商： | TPIC43T01 |
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TPIC43T01, TPIC43T02
THREE-PHASE BRUSHLESS MOTOR RPMCONTROLLERS
SLIS098 – APRIL 2000
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
digital filter coefficients
The two digital filter coefficients can be set by programming the EEPROM to select the pole and zero for the
digital filter. The pole and zero values are directly proportional to the digital filter sample rate, T
(s)
, and the filter
gain is independent of T
(s)
. The adjustment range of T
(s)
is from 250
μ
s to 1 ms (see Figure 13). The K1 lead
coefficient value is stored in bits 2–7 of Address 1 as a BCD equivalent of the K1 coefficient. K1 has a range
from 0 to 63, with a default setting of 28. See Table 5 for a typical range of pole and zero frequencies at
T
(s)
= 500
μ
s. The K2 coefficient value is stored in bits 5–7 of Address 0 (see Table 6 and Figure 14).
The gain of the digital filter is given by the equation:
OUT
IN
[128
Z – K2]
Z–K1 128
0.25
Where:
Z represents a delay of one period of the f
(s)
sampling clock.
The scaling factor of 0.25 in the above equation accounts for the difference in word lengths in the integrator
(10 bits), the filter (17 bits) and the PWM generator (8 bits).
Digital
Integrator
(10-Bit Data Word)
Σ
+
+
1/Z
Σ
–
K1
K2
+
PWM
Generator
(8-Bit Data Word)
Figure 13. Digital Filter System Diagram
Table 5. Filter Zero and Gain as a Function of K2, Ts = 500
μ
s
K2
K1 = 14 (POLE = 704 Hz)
ZERO (Hz)
K1 = 28 (POLE = 483 Hz)
ZERO (Hz)
K1 = 56 (POLE = 263 Hz)
ZERO (Hz)
GAIN
GAIN
GAIN
127
6.2
0.28
4.8
0.32
3.7
0.45
126
12.4
0.28
9.7
0.32
7.3
0.45
125
18.4
0.42
14.5
0.48
11
0.68
124
24.7
0.28
19.3
0.32
14.6
0.45
123
30.9
0.35
24.2
0.4
18.3
0.56
122
37.1
0.42
29
0.48
21.9
0.68
121
43.3
0.25
33.9
0.28
25.6
0.39
120
49.4
0.28
38.7
0.32
29.2
0.45
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPIC43T01DA | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3 Phase Brushless MotorRPMController RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TPIC43T01DAR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase Brushless Motor RPM Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TPIC43T02 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:THREE-PHASE BRUSHLESS MOTOR RPM CONTROLLERS |
| TPIC43T02DA | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase Brushless Motor RPM Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TPIC43T02DAR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 3-Phase Brushless Motor RPM Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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