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參數(shù)資料
| 型號： | L6258EA |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2 A, PDSO36 |
| 封裝： | POWER, SO-36 |
| 文件頁數(shù)： | 10/23頁 |
| 文件大?。?/td> | 214K |
| 代理商： | L6258EA |
L6258EA
18/23
5.2 Motor Selection
Some stepper motor have such high core losses that they are not suitable for switch mode current regulation. Fur-
thermore, some stepper motors are not designed for continuous operating at maximum current. Since the circuit
can drive a constant current through the motor, its temperature might exceed, both at low and high speed operation.
Unused Inputs
Unused inputs should be connected to the proper voltage levels in order to get the highest noise immunity.
5.3 Notes on PCB Design
We recommend to observe the following layout rules to avoid application problems with ground and anomalous
recirculation current.
The by-pass capacitors for the power and logic supply must be kept as near as possible to the IC.
It's important to separate on the PCB board the logic and power grounds and the internal charge pump circuit
ground avoiding that ground traces of the logic signals cross the ground traces of the power signals.
Because the IC uses the board as a heat sink, the dissipating copper area must be sized in accordance with the
required value of Rthj-amb.
6
OPERATION MODE TIME DIAGRAMS
Figure 14. Full step operation mode timing diagram (Phase - DAC input and Motor Current)
Ph2
FULL Step Vector
0
23
1
0
3
2
1
0
Position
DAC 2
Inputs
0
Motor drive
Current 2
0
Motor drive
Current 1
I3_2
I2_2
I1_2
I3_1
0
5V
0
5V
0
5V
0
5V
0
5V
0
5V
0
5V
0
5V
0
5V
DAC 1
Inputs
Phase
2
Phase
1
I0_2
I2_1
I1_1
I0_1
0
3
2
1
Ph1
Ph2
Ph1
D97IN629A
95.2%
19.1%
95.2%
19.1%
I3
I2
I1
I0
Current level
% of IMAX
0000
100
0001
98.4
0010
95.2
0011
92.1
0100
88.9
0101
82.5
0110
77.8
0111
71.4
1000
63.5
1001
55.6
1010
47.6
1011
38.1
1100
28.6
1101
19.1
1110
9.5
1111
No Current
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6258EP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EP_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EX | 功能描述:馬達/運動/點火控制器和驅(qū)動器 1.5A Stepper Motor 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6258EX_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EXTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Hi-Curr Univ Motor 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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