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參數(shù)資料
| 型號： | A3949SLP-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | DMOS Full-Bridge Motor Driver |
| 中文描述： | DMOS全橋式電動機驅(qū)動器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 357K |
| 代理商： | A3949SLP-T |
5
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
D
2
A3949
DMOS Full-Bridge Motor Driver
VREG.
This supply voltage is used to operate the sink-
side DMOS outputs. VREG is internally monitored and in
the case of a fault condition, the outputs of the device are
disabled. The VREG pin should be decoupled with a 0.22
μ
F
capacitor to ground.
Charge Pump.
The charge pump is used to generate a
supply above VBB
to drive the source-side DMOS gates. A
0.1 uF ceramic monolithic capacitor should be connected
between CP1 and CP2 for pumping purposes. A 0.1 uF
ceramic monolithic capacitor should be connected between
VCP and VBB to act as a reservoir to run the high side
DMOS devices. The VCP voltage is internally monitored,
and in the case of a fault condition, the outputs of the device
are disabled.
Shutdown.
In the event of a fault due to excessive junction
temperature, or low voltage on VCP or VREG, the outputs of
the device are disabled until the fault condition is removed.
At power-up, the UVLO circuit disables the drivers.
Sleep Mode.
Control input SLEEP is used to minimize
power consumption when the A3949 is not in use. This
disables much of the internal circuitry, including the low-side
gate supply and the charge pump. A logic low on this pin
puts the device into Sleep mode. A logic high allows normal
operation. After coming out of Sleep mode, the user should
wait 1 ms before applying PWM signals, to allow the charge
pump to stabilize.
Braking.
The braking function is implemented by driv-
ing the device in slow decay mode via the MODE pin, and
applying an enable chop command. Because it is possible to
drive current in both directions through the DMOS switches,
this con
fi
guration effectively shorts out the motor-generated
BEMF, as long as the enable chop mode is asserted on the
ENABLE pin. The maximum current can be approximated
by V
/ R
. Care should be taken to insure that the maxi-
mum ratings of the device are not exceeded in worse case
braking situations of high speed and high inertial loads.
Functional Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3950 | DMOS Full-Bridge Motor Driver |
| A3950SLPTR-T | DMOS Full-Bridge Motor Driver |
| A3950SLP-T | DMOS Full-Bridge Motor Driver |
| A3951SB | FULL-BRIDGE PWM MOTOR DRIVER |
| A3951SW | FULL-BRIDGE PWM MOTOR DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3949SLPTR | 功能描述:IC MOTOR DRVR PWM FULL 16TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 標準包裝:1 系列:- 應(yīng)用:直流電機驅(qū)動器，步進電機驅(qū)動器 評估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A3949SLPTR-T | 功能描述:IC MOTOR DRVR PWM FULL 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 標準包裝:1 系列:- 應(yīng)用:直流電機驅(qū)動器，步進電機驅(qū)動器 評估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A-394SRD | 制造商:Paralight Electronics Co. 功能描述:LED 4DIGIT HT 0.394-INCH SUPERRED |
| A3950 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:DMOS Full-Bridge Motor Driver |
| A3950_06 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:DMOS Full-Bridge Motor Driver |
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