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參數(shù)資料
| 型號： | TMC239 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Current Microstep Stepper Motor Driver with protection / diagnosis and SPI Interface |
| 中文描述： | 大電流微步驅(qū)動器，步進電機保護/診斷和SPI接口 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 170K |
| 代理商： | TMC239 |
TMC239 DATA SHEET (V1.00 / Apr. 24th, 2003)
16
Copyright 2002, TRINAMIC Microchips GmbH
Slope Control Resistor
The output-voltage slope of the full bridge is controlled by a constant current gate charge / discharge of
the MOSFETs. The charge / discharge current for the high-side MOSFETs can be controlled by an
external resistor: A reference current is generated by internally pulling the SLP-Pin to 1.25V via an
integrated 4.7K
resistor. This current is used to generate the current for switching ON and OFF the
upper side transistors.
The gate-driver output current can be set in range of 0.5mA to 25mA by an external resistor:
≈
[mA]
I
OUT
R
SLP
:
Slope control resistor
I
OUT
:
Controlled output current of the low-side MOSFET driver
The SLP-pin can directly be connected to AGND for the fastest output-voltage slope (respectively
maximum output current).
The low side MOSFETs are switched on/off with a constant current of typ. +/-15mA into their gate for
charge and discharge.
Slope control only affects the upper transistors, and thus the normal direction current, where the circuit
feeds energy into the coils. The additional mixed decay slopes, where the coil feeds back current into
the power supply, have fixed slope control (corresponding to a 5K
to 10K
slope control resistor). For
applications where electromagnetic emission is very critical, it might be necessary to add additional LC
(or capacitor only) filtering on the motor connections.
For these applications emission is lower, if only slow decay operation is used.
Please remark, that there is a trade off between reduced electromagnetic emissions (slow slope) and
high efficiency because of low dynamic losses (fast slope).
25
7
123
R
SLP
]
[k
0
5
10
15
20
-
H
R
SLP
in KOhm
10
5
2
0
20
50
100
I
H
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| TMC239-LA | High Current Microstep Stepper Motor Driver with protection / diagnosis and SPI Interface |
| TMC239-SA | High Current Microstep Stepper Motor Driver with protection / diagnosis and SPI Interface |
| TMC249A | High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface |
| TMC249A-LA | High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMC239_1 | 制造商:TRINAMIC 制造商全稱:TRINAMIC 功能描述:High current microstep stepper motor driver with protection, diagnostics and SPI Interface |
| TMC239A-LA | 制造商:TRINAMIC 制造商全稱:TRINAMIC 功能描述:Microstep Driver for External MOSFETs for up to 4A |
| TMC239A-SA | 制造商:Trinamic 功能描述:MICROSTEPPING MOTOR DRIVER SO-28 制造商:Trinamic 功能描述:MICROSTEPPING MOTOR DRIVER, SO-28 制造商:Trinamic 功能描述:MICROSTEPPING MOTOR DRIVER, SO-28; Motor Type:Stepper; No. of Outputs:8; Output Current:50mA; Driver Case Style:SOIC; No. of Pins:28; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:-25C; Operating ;RoHS Compliant: Yes |
| TMC239-LA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Current Microstep Stepper Motor Driver with protection / diagnosis and SPI Interface |
| TMC239-SA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Current Microstep Stepper Motor Driver with protection / diagnosis and SPI Interface |
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