Động cơ bước A4988 2oz A4988 cho máy in 3D DRV8825
₫ 27.700
Sản phẩm Động cơ bước A4988 2oz A4988 cho máy in 3D DRV8825 đang được mở bán với mức giá siêu tốt khi mua online, giao hàng online trên toàn quốc với chi phí tiết kiệm nhất,0 đã được bán ra kể từ lúc chào bán lần cuối cùng.Trên đây là số liệu về sản phẩm chúng tôi thống kê và gửi đến bạn, hi vọng với những gợi ý ở trên giúp bạn mua sắm tốt hơn tại Pricespy Việt Nam
Note: a4988 green and red are the same 1a
Introduction
A 4988 is a complete microstep motor drive with built-in converters that are easy to operate.The product can operate double-pole stepper motor in full, half, 1/4, 1/8 and 1/16 stepper mode, and the output drive performance can reach 35 v and 1 a.A4988 includes a fixed shutdown time current regulator, which can work in slow or mixed decay mode.Converter is the key to easy implementation of a 4988.As long as a pulse is fed into the stepper input, the motor can be driven to microstep.No phase sequence table, high frequency control line or complex interface programming is required.The a4988 interface is well suited for complex microprocessors that are not available or overloaded.
At microstep operation, the chopper control in a4988 automatically selects current attenuation mode (slow or mixed).In hybrid attenuation mode, the device is initially set to rapidly decay during part of the fixed downtime and then at a slower rate during the remainder of the downtime.The hybrid damping current control scheme can reduce the noise of audible motor, increase stepping accuracy and reduce power consumption.Provide internal synchronous rectifier control circuit to improve power consumption during pulse width modulation (pwm) operation.The internal circuit protection includes: overheat shutdown with lag, underpressure lock (uvlo) and cross current protection.There is no need for special electrical sorting.
A 4988 surface mount qfn package (es) with a size of 5 mm x 5 mm, with a nominal overall packaging height of 0.90 mm and an external heat dissipation board to enhance the heat dissipation function.The package is lead-free package (suffix t), using 100% tin plating lead frame.
Functions and advantages
Low rds (open) output
Detection/selection of automatic current attenuation mode
Hybrid and slow current attenuation mode
Synchronous rectifier for low power dissipation
Internal uvlo
Cross current protection
3.3 and 5v compatible logic power supply
Overheat off circuit
Grounding short circuit protection
Loading short circuit protection
Five optional stepping modes: full, 1/2, 1/4, 1/8 and 1/16
------------------------------------------------------------------Demarcation line-----------------------------------------------------------
Drv 8825 comparative advantage over 4988:
-maximum current 2.5a.
-maximum support 32 breakdown.
3, 4 layers pcb board, heat dissipation performance is better.
-less resistance, less heat and better heat dissipation in the chip.
Parameters:
Size: 1.5mm x 2mm (same as 4988)
Driveable current: 2.5a
Breakdown: 1,1/2, 1/4, 1/8, 1/16, 1/32
Manufacturing process: smt smd machine manufacturing, non-manual welding, higher elite rate, more stable performance
Suitable for:
Need to drive stepper motor on occasion.
Is to build 3 d printer, cnc, engraving machine and other essential modules.
The 3d p
Introduction
A 4988 is a complete microstep motor drive with built-in converters that are easy to operate.The product can operate double-pole stepper motor in full, half, 1/4, 1/8 and 1/16 stepper mode, and the output drive performance can reach 35 v and 1 a.A4988 includes a fixed shutdown time current regulator, which can work in slow or mixed decay mode.Converter is the key to easy implementation of a 4988.As long as a pulse is fed into the stepper input, the motor can be driven to microstep.No phase sequence table, high frequency control line or complex interface programming is required.The a4988 interface is well suited for complex microprocessors that are not available or overloaded.
At microstep operation, the chopper control in a4988 automatically selects current attenuation mode (slow or mixed).In hybrid attenuation mode, the device is initially set to rapidly decay during part of the fixed downtime and then at a slower rate during the remainder of the downtime.The hybrid damping current control scheme can reduce the noise of audible motor, increase stepping accuracy and reduce power consumption.Provide internal synchronous rectifier control circuit to improve power consumption during pulse width modulation (pwm) operation.The internal circuit protection includes: overheat shutdown with lag, underpressure lock (uvlo) and cross current protection.There is no need for special electrical sorting.
A 4988 surface mount qfn package (es) with a size of 5 mm x 5 mm, with a nominal overall packaging height of 0.90 mm and an external heat dissipation board to enhance the heat dissipation function.The package is lead-free package (suffix t), using 100% tin plating lead frame.
Functions and advantages
Low rds (open) output
Detection/selection of automatic current attenuation mode
Hybrid and slow current attenuation mode
Synchronous rectifier for low power dissipation
Internal uvlo
Cross current protection
3.3 and 5v compatible logic power supply
Overheat off circuit
Grounding short circuit protection
Loading short circuit protection
Five optional stepping modes: full, 1/2, 1/4, 1/8 and 1/16
------------------------------------------------------------------Demarcation line-----------------------------------------------------------
Drv 8825 comparative advantage over 4988:
-maximum current 2.5a.
-maximum support 32 breakdown.
3, 4 layers pcb board, heat dissipation performance is better.
-less resistance, less heat and better heat dissipation in the chip.
Parameters:
Size: 1.5mm x 2mm (same as 4988)
Driveable current: 2.5a
Breakdown: 1,1/2, 1/4, 1/8, 1/16, 1/32
Manufacturing process: smt smd machine manufacturing, non-manual welding, higher elite rate, more stable performance
Suitable for:
Need to drive stepper motor on occasion.
Is to build 3 d printer, cnc, engraving machine and other essential modules.
The 3d p