參數(shù)資料
型號(hào)： TMC249A-SA
廠商： Electronic Theatre Controls, Inc.
英文描述： High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface
中文描述： 大電流微步步進(jìn)電機(jī)驅(qū)動(dòng)器，帶有傳感器的失速檢測(cè)，保護(hù)/診斷和SPI接口
文件頁(yè)數(shù)： 6/25頁(yè)
文件大小： 219K
代理商： TMC249A-SA
TMC249 / TMC249A DATA SHEET (V2.02 / Aug 12th, 2005)
6
Copyright 2005, TRINAMIC Motion Control GmbH & Co KG
Selecting Power Transistors
Selection of power transistors for the TMC249 depends on required current, voltage and thermal
conditions. Driving transistors directly with the TMC249 is only limited by the gate capacity of these
transistors. If the total gate charge is too high, slope time increases and leads to a higher switching
power dissipation. Typical applications can reach a current in excess of 4A, while the maximum
voltage is limited to 30V. A total gate charge of below 10nC per transistor is recommended. The table
below shows a choice of transistors which can be driven directly by the TMC249. The maximum
application current mainly is a function of cooling and environment temperature. The given values are
more conservative. Peak currents typically can be higher by a factor of 1.5 for a limited time.
List of recommended transistors
Manufacturer
and type
Siliconix
SI 7501DN
Siliconix
SI 4539ADY
Siliconix
SI 5504
IRF 9952
(/ IRF 7509)
Siliconix
SI 1901
Fairchild Semi
FDS 8333C
Package
(#Trans)
PPack
(1N,1P)
SO8
(1N,1P)
1206-8
(1N,1P)
SO8
(1N,1P)
SOT363-6
(2P)
SO8
(1N,1P)
Volts N-type
Volts P-type
30V
30V
30V
30V
30V
30V
30V
30V
30V
RDS
ON
[Ohm]
0.03
0.05
0.04
0.06
0.09
0.17
0.10
0.25
0.48
Total gate
charge [nC]
5.0
8.0
7.5
9.0
3.0
3.2
4.5
4.0
0.8
Typical maximum
application current
4000mA
Remark
(1)
3500mA
2000mA
2500mA
200mA unipolar
30V
30V
0.08
0.13
2.9
3.0
3000mA
6000mA (2 devices
in parallel)
(1) These transistor types have a very high drain to gate capacity (P-channel), which may introduce
destructive current impulses into the HA/HB outputs by forcing them above the power supply level,
depending on the low-side slope. To ensure reliability, connect one ZHCS1000 SOT23 or an SS16 1A
schottky diode or similar to both HA and HB outputs against VS to protect them.
Layout Considerations
For optimal operation of the circuit a careful board layout is important, because of the combination of
high current chopper operation coupled with high accuracy threshold comparators. Please pay special
attention to massive grounding. Depending on the required motor current, either a single massive
ground plane or a ground plane plus star connection of the power traces may be used. The schematic
shows how the high current paths can be routed separately, so that the chopper current does not flow
through the system’s GND-plane. Tie the TMC249’s AGND and GND to the GND plane. Additionally,
use enough filtering capacitors located near to the board’s power supply input and small ceramic
capacitors near to the power supply connections of the TMC249. Use low inductance sense resistors,
or add a ceramic capacitor in parallel to each resistor to avoid high voltage spikes. In some
applications it may become necessary to introduce additional RC-filtering into the SRA / SRB line, as
shown in the schematic, to prevent spikes from
triggering the short circuit protection or the
chopper comparator. If you want to take
advantage of the thermal protection and
diagnosis, ensure, that the power transistors
are very close to the package, and that there is
a good thermal contact between the TMC249
and the external transistors. Please be aware,
that long or thin traces to the sense resistors
may add substantial resistance and thus
reduce output current. The same is valid for the
high side shunt resistor.
+VM
GND
GND-
Plane
R
SB
R
SA
Bridge A
Bridge B
R
S
C
VM
100R
optional voltage
divider
VS
VT
TMC249/
TMC239A
100R
100R
10nF
SRA
SRB
optional filter
AGND
GND
100nF
R
DIV
相關(guān)PDF資料
PDF描述
TMC249-SA High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface
TMC2601 140-370 MHz Output Frequency Digital Video Serial Transmission Encoder （8- or 10-bit Parallel Data Into Serial Format）(140-370 MHz 輸出頻率的數(shù)字視頻串行傳輸譯碼器（8位或10位并行數(shù)據(jù)轉(zhuǎn)換成串行格式）)
TMC3211 32-Bit, 20 MOPS Integer Divider(32位,20MOPS 整數(shù)除法器)
TMC428 Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces
TMD0305-2 Microwave Power GaAs MMIC(微波功率砷化鎵MMIC)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMC249-EVAL 制造商:Trinamic 功能描述:EVALUATION BOARD FOR TMC249
TMC249-HVHR 制造商:TRINAMIC 制造商全稱:TRINAMIC 功能描述:Evaluation Board for TMC249 with High Voltage and High Resolution
TMC249-SA 制造商:Trinamic 功能描述:IC TMC249-SA SO-28
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*