參數(shù)資料
型號： TPIC43T02DAR
廠商： TEXAS INSTRUMENTS INC
元件分類： 運動控制電子
英文描述： BRUSHLESS DC MOTOR CONTROLLER, PDSO38
封裝： PLASTIC, TSSOP-38
文件頁數(shù)： 9/29頁
文件大?。?/td> 463K
代理商： TPIC43T02DAR
TPIC43T01, TPIC43T02
THREE-PHASE BRUSHLESS MOTOR RPM CONTROLLERS
SLIS098 – APRIL 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
digital integrator gain selections
In Table 4, EEPROM bits can be set for different clocking rates of the digital integrator. In effect, this allows for
different integrator gain, thereby allowing the user to optimize loop performance (see Figure 12). The integrator
circuit actually utilizes 14 bits with a 4-bit pre-integrator prior to the 10 bits which are output to the digital filter.
This design increases resolution in the error detected by the speed discriminator while reducing the bit-count
output to the digital filter.
Table 4. Digital Integrator Gain Selection Table
EEPROM
ADDR 0
BIT 2
EEPROM
ADDR 0
BIT 1
EEPROM
ADDR 0
BIT 0
INTEGRATOR INPUT
FREQUENCY DIVIDE
DOWN
INTEGRATOR
GAIN ADJUST
TYPICAL INTEGRATOR
INPUT FREQUENCY
0
÷ 1
0 dB
5.8 MHz
0
1
0
÷ 2
–6 dB
2.9 MHz
0
1
÷ 3
– 9.5 dB
1.93 MHz
1
0
÷ 4
– 12 dB
1.45 MHz
0
1
÷ 6
– 15.5 dB
967 kHz
1
0
÷ 8
– 18 dB
725 kHz
1
0
1
÷ 12
– 21.5 dB
483 kHz
1
÷ 16
– 24 dB
363 kHz
Default setting for integrator clock.
Pre-
Integrator
(4 Bits)
Integrator
(10 Bits)
Digital
Filter
8-Bit
PWM
Generator
Divide-By
Gain
Adjust
Input Frequency
B0
B1
B2
5.8 MHz
OSC
Up
Down
Figure 12. Integrator Implementation
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相關代理商/技術參數(shù)
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