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參數(shù)資料
| 型號(hào)： | TMC249A |
| 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)： | 7/25頁(yè) |
| 文件大小： | 219K |
| 代理商： | TMC249A |
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TMC249 / TMC249A DATA SHEET (V2.02 / Aug 12th, 2005)
7
Copyright 2005, TRINAMIC Motion Control GmbH & Co KG
Using additional Power Drivers
For higher voltage and higher output current it is possible to add external MOSFET gate drivers. Both,
dedicated transistor drivers are suitable, as well as a circuit based on standard HCMOS drivers. It is
important to understand the function of dedicated gate drivers for N-channel transistors: Since the
chopping also can be stopped in open load conditions, the gate drive circuit for the upper transistors
should allow for continuous ON conditions. In the schematic below this is satisfied by attaching a weak
additional charge pump oscillator and pumping the VS up to the high voltage supply. Do not enable
the TMC249, before the gate driver capacitors are charged to an appropriate voltage. A current
sensing comparator in the VM line pulling down the VT pin by some 100mV on overcurrent can be
added, if required. Since the TMC249 in this application can not sense switch-off of the transistor
gates to ensure break-before-make operation, the break before-make-delays have to be set by
capacitive loading of its transistor drive outputs. The capacitors CdHS and CdLS are charged /
discharged with the nominal gate current. The opposite output is not enabled, before the switching-off
output has been discharged to 0.5V. To calculate the timing, refer to the required logic levels of the
attached power driver, resp. the attached PMOS. For CdHS and CdLS 470pF give about 100ns. Both
circuits do not show decoupling capacitors and further details.
+12V
High current, high
voltage MOS, e.g.
SI4450
R
S
Coil
N
N
HA1
LA1
SRA
VT
TMC249/
TMC239
VS
small signal P-
MOS, e.g. BSS84
LS-
Driver
+V
M
e.g. 50V
HS-Driver
1μF
C
470p
C
470p
2n2
C-Pump
20kHz
ICM7555
to other
bridges
100R
4.7nF
opt.
22K
N
N
IR2101
12V
390R
390R
1
SLP
10K
Set HS and LS
current to 10mA
LED
grn*
*) The LED increases break-before-make
time and may be bridged if not desired
High voltage logic
level MOS bridge
R
S
Coil
N
N
P
P
HA1
LA1
SRA
VT
TMC249/
TMC239
VS
+V
S
+V
M
20..60V
C
DHS
C
DLS
1K
1/2 74HC244
on low side
+5V
1K
1/2 74HC244
on high side
VM-5.2V
1K
SLP
15K
set to 7 mA high-
side drive current
LM337
HV
120R
390R
ADJ
OUT
IN
55V low current
N-MOS
7..15V
100R
100R
GND
VCC
VCC
GND
/OE
/OE
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| TMC249A-LA | High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface |
| TMC249A-SA | High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnostics and SPI Interface |
| TMC249-SA | 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 |
|---|---|
| TMC249-A | 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 Sensorless Stall D e t e c t i o n ,P rotection / Diagnosis and SPI Interface |
| TMC249A-LA | 制造商:Trinamic 功能描述:IC BRIDGE DRIVER SPI/ANLG 32QFN |
| TMC249A-SA | 制造商:Trinamic 功能描述:STEPPER MOTOR DRIVER SMD SO-28 制造商:Trinamic 功能描述:STEPPER MOTOR DRIVER, SMD, SO-28 制造商:Trinamic 功能描述:IC MOTOR DRIVER, FULL BRIDGE, 1mA SOIC-28; Motor Type:Full Bridge; No. of Outputs:8; Output Current:1mA; Output Voltage:34V; Driver Case Style:SOIC; No. of Pins:28; Supply Voltage Min:3V; Supply Voltage Max:5.5V; MSL:MSL 2 - 1 year ;RoHS Compliant: Yes |
| 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 |
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