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| 型號(hào)： | LM6218AWM |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 電壓反饋運(yùn)算放大器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 224K |
| 代理商： | LM6218AWM |
Three-Phase Motor Commutation
(Continued)
TABLE I. LM621 Commutation Decoder Truth Table
Sensor
Phasing
Position
Range
Sensor Inputs
Sink Outputs
Source Outputs
HS1
HS2
HS3
1
2
3
1
2
3
0–60
60–120
120–180
180–240
240–300
300–360
0
0
0
1
1
1
0
0
1
1
1
0
0
1
1
1
0
0
ON
ON
off
off
off
off
off
off
ON
ON
off
off
off
off
off
off
ON
ON
off
off
off
ON
ON
off
ON
off
off
off
off
ON
off
ON
off
off
off
30 deg
0–60
60–120
120–180
180–240
240–300
300–360
1
1
1
0
0
0
0
0
1
1
1
0
1
0
0
0
1
1
ON
ON
off
off
off
off
off
off
ON
ON
off
off
off
off
off
off
ON
ON
off
off
off
ON
ON
off
ON
off
off
off
off
ON
off
ON
ON
off
off
off
60 deg
0–90
90–180
180–270
270–360
0
0
1
1
1
0
0
1
HS2
HS2
HS2
HS2
off
ON
off
off
na
na
na
na
off
off
ON
off
off
off
off
ON
na
na
na
na
ON
off
off
off
90 deg
Pin Numbers:
5
6
7
16
15
14
13
12
11
Note 1:
The above outputs are generated when the Direction input, pin 2, is logic high. For reverse rotation (pin 2 logic low), the above sink and source output
states become exchanged.
Note 2:
For four-phase motors sink and source outputs number two (pins 15 and 12) are not used; hense the ‘‘na’’ (not applicable) in the appropriate columns
above. Figure 6 shows how the required sink and source outputs for four-phase motors are derived.
TABLE II. Alternative Sensor-Phasing Names
Alternate
Phasing
Position
Range
Sensor Inputs
Corresponding LM621 Position
Range and/or Comments
HS1
HS2
HS3
0–60
60–120
120–180
180–240
240–300
300–360
0
1
1
1
0
0
0
0
1
1
1
0
0
0
0
1
1
1
Same as 30-degree phasing, but in reverse
order; i.e., only change is relative direction.
‘‘60 deg’’
0–60
60–120
120–180
180–240
240–300
300–360
0
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
0
1
Same as 60-degree phasing, but with shifted
order of position ranges; i.e., only change is
relative phasing of sensor signals.
‘‘120 deg’’
0–60
60–120
120–180
180–240
240–300
300–360
0
1
1
1
0
0
1
1
0
0
0
1
0
0
0
1
1
1
Same comment as above for ‘‘120 deg’’
phasing.
‘‘240 deg’’
0–60
60–120
120–180
180–240
240–300
300–360
0
1
1
1
0
0
1
1
1
0
0
0
1
1
0
0
0
1
Same as 30-degree phasing, but with shifted
order of position ranges, i.e., only change is
relative phasing of sensor signals.
‘‘300 deg’’
Four-Phase Motor Commutation
Four-phase motors use a 90-degree (quadrature) rotor-posi-
tion sensor phasing. This phasing scheme is also shown in
Table I. LM621 Commutation Decoder Truth Table. As
shown in Table I, the 90-degree phasing has only two rotor-
position-sensor signals, HS1 and HS2. When using the
ed to both the HS2 and HS3 chip inputs.
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM6218AWMX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| LM6218N | 制造商:IC'S/TRANSISTORS/DIO 功能描述: 制造商:IC'S/TRANSISTORS/DIODES 功能描述: |
| LM6218WM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Fast Settling Dual Operational Amplifiers |
| LM621EJ | 制造商:Texas Instruments 功能描述: 制造商:National Semiconductor Corporation 功能描述: |
| LM621EJ/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
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