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參數(shù)資料
| 型號： | 2918 |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| 中文描述： | 雙全橋PWM電機驅(qū)動 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 191K |
| 代理商： | 2918 |
2918
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
www.allegromicro.com
LOAD CURRENT PATHS
General
To avoid excessive voltage spikes on the
LOAD SUPPLY pin (V
BB
), a large-value
capacitor (
≥
47
μ
F) should be connected from
V
BB
to the ground pin as close as possible to
the device. Under no circumstances should
the voltage at V
BB
exceed 45 V.
The PHASE input to each bridge
determines the direction motor winding
current flows. An internally generated
deadtime, of approximately 3
μ
s, prevents
crossover currents that can occur when
switching the PHASE input.
All four drivers in the bridge output can
be turned OFF, with V
EN
≥
2.4, resulting in
a fast current decay through the internal
ground clamp and flyback diodes. The fast
current decay is desirable in half-step and
high-speed applications. The ENABLE input
must be tied low if it is not used.
Varying the reference voltage (V
REF
)
provides continuous control of the peak load
current.
Thermal protection circuitry turns OFF all
drivers when the junction temperature
reaches approximately +170
°
C. It is
intended only to protect the device from
failures due to excessive junction
temperature and should not imply that output
short circuits are permitted. The output
drivers are re-enabled when the junction
temperature cools to approximately +145
°
C.
Dwg. EP-006-1
RS
BB
V
BRIDGE ON
SOURCE OFF
ALL OFF
The products described here are manufactured in Japan by Sanken
Electric Co., Ltd. for sale by Allegro MicroSystems, Inc.
Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. reserve the
right to make, from time to time, such departures from the detail
specifications as may be required to permit improvements in the
performance, reliability, or manufacturability of their products.
Therefore, the user is cautioned to verify that the information in this
publication is current before placing any order.
These products are not authorized for use as critical components in
life-support appliances, devices, or systems without express written
approval.
The information included herein is believed to be accurate and
reliable. However, Sanken Electric Co., Ltd. and Allegro
MicroSystems, Inc. assume no responsibility for its use; nor for any
infringements of patents or other rights of third parties which may
result from its use.
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| 2918 BK001 | 功能描述:HOOK-UP STRND 18AWG BLK 1000' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):18 AWG 導(dǎo)線股數(shù):19/30 導(dǎo)體材料:銅，鍍鎳 護套（絕緣）材料:含氟聚合物 護套（絕緣）直徑:0.058"（1.47mm） 護套（絕緣）厚度:0.006"（0.15mm） 長度:1000.0'（304.8m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:黑色 等級:UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1 |
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