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參數(shù)資料
| 型號： | LV8713T |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| 封裝： | 0.225 INCH, TSSOP-24 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 296K |
| 代理商： | LV8713T |
LV8713T
No.A1918-10/16
(8) Forward/reverse switching function
FR
Operating mode
Low
Clockwise (CW)
High
Counter-clockwise (CCW)
The internal D/A converter proceeds by one bit at the rising edge of the input STEP pulse.
In addition, CW and CCW mode are switched by setting the FR pin.
In CW mode, the channel 2 current phase is delayed by 90° relative to the channel 1 current.
In CCW mode, the channel 2 current phase is advanced by 90° relative to the channel 1 current.
(9) Setting constant-current control
The setting of STM driver's constant current control is decided the VREF voltage from the resistance connected
between RNF and GND by the following expression.
IOUT = (VREF/5)/RNF resistance
* The above setting is the output current at 100% of each excitation mode.
The voltage input to the VREF pin can be switched to four-step settings depending on the statuses of the two inputs,
ATT1 and ATT2. This is effective for reducing power consumption when motor holding current is supplied.
Attenuation function for VREF input voltage
ATT1
ATT2
Current setting reference voltage attenuation ratio
Low
100%
High
Low
80%
Low
High
60%
High
40%
The formula used to calculate the output current when using the function for attenuating the VREF input voltage is
given below.
IOUT = (VREF/5) × (attenuation ratio)/RNF resistance
Example : At VREF of 1.0V, a reference voltage setting of 100% [(ATT1, ATT2) = (L, L)] and an RNF resistance of
0.5
Ω, the output current is set as shown below.
IOUT = 1.0V/5 × 100%/0.5Ω = 400mA
If, in this state, (ATT1, ATT2) is set to (H, H), IOUT will be as follows :
IOUT = 400mA × 40% = 160mA
In this way, the output current is attenuated when the motor holding current is supplied so that power can
be conserved.
FR
CW mode
CCW mode
STEP
Excitation position
1ch output
2ch output
(1)
(2)
(3)
(4)
(5)
(6)
(5)
(4)
(3)
(4)
(5)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LV8713TGEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR LV8713T RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LV8713T-MPB-H | 功能描述:馬達/運動/點火控制器和驅動器 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 |
| LV8713T-TLM-H | 功能描述:馬達/運動/點火控制器和驅動器 4-16V Stepping Motor Driver 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 |
| LV8727 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PWM Current Control Stepping Motor Driver |
| LV8727-E | 功能描述:馬達/運動/點火控制器和驅動器 PRINTER DRIVER 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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