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參數(shù)資料
| 型號： | M54676P |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 2-PHASE STEPPER MOTOR DRIVER |
| 中文描述： | 二相步進電機驅動器 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 112K |
| 代理商： | M54676P |
2-PHASE STEPPER MOTOR DRIVER
M54676P
MITSUBISHI <CONTROL / DRIVER IC>
PRECAUTIONS FOR USE
Sequence of supply voltage (VM and Vcc5) and logic
input voltage
The VM voltage should be the maximum voltage among all volt-
ages applied to this IC. If no voltage is applied to VM and 5V
voltage is applied to Vcc5 pin and logic input pin, leak current flows
from Vcc5 pin and logic input pin to VM through a surge protection
diode.
Thermal shutdown function
The circuit board on which this IC is mounted is designed to realize
low impedance between power supply and output pin. Therefore, it
is desirable to take a safe measure such as fixing a fuse to avoid
such a situation that the board is damaged by a fire when output
pin is internally short-circuited by excessive surge voltage applied
externally by accident (or when the TSD function is damaged).
Thermal loss
In case that conditions for use (regarding supply voltage and
output current) or a board used is changed, sufficient thermal
evaluation should be conducted and design should be worked out
to leave a margin for thermal loss. The higher the chopping
frequency is, the larger switching loss within the IC becomes.
Wiring on the board
Current is controlled by flowing output current to the current
sensing resistor (1 ohmlevel) to measure the voltage fall.
The output current performs the chopping operation at high speed.
Therefore, wiring to flow current and to connect the high-
impedance input pin (Vref) should be conducted carefully not to
cause a cross talk.
Sequence
After the VM voltage rises, set the Vcc5 power supply voltage and
logic input voltage. Similarly, after Vcc5 supply voltage and logic
input voltage rise, raise the VM supply voltage.
VM
Vcc5
and
logic input
Time
(Open)
VM
12V
Mode
Normal operation mode
12V
Standby mode (No current flows to
logic input pin and Vcc pin.)
0V
Leak current flows
from Vcc5 pin and
logic input pin to
VM pin.
Prohibited
(Open)
Vcc5
5V
0V
5V
Logic
input
5V,0V
5V,0V
5V,0V
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M54677FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:2-PHASE STEPPER MOTOR DRIVER |
| M54678FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:2-PHASE STEPPER MOTOR DRIVER |
| M54679FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:2-PHASE STEPPER MOTOR DRIVER |
| M54679SP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:2-Phase Stepper Motor Driver |
| M54679SP(#TB0G) | 制造商:Renesas Electronics Corporation 功能描述: |
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