- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄375135 > A3936SED (Allegro MicroSystems, Inc.) DMOS THREE-PHASE PWM MOTOR DRIVER PDF資料下載
參數(shù)資料
| 型號(hào)： | A3936SED |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | DMOS THREE-PHASE PWM MOTOR DRIVER |
| 中文描述： | 的DMOS三相PWM電機(jī)驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 7/9頁(yè) |
| 文件大小： | 177K |
| 代理商： | A3936SED |
3936 Three Phase PWM Motor Driver
PWM Blank Timer.
When a source driver turns on, a
current spike occurs due to the reverse recovery currents of
the clamp diodes and/or switching transients related to
distributed capacitance in the load. To prevent this current
spike from erroneously resetting the source enable latch, the
sense comparator is blanked. The blank timer runs after the
off time counter to provide the blanking function. The blank
timer is reset when ENABLE is chopped or DIR is changed.
For external PWM control, a DIR change or ENABLE ON
will trigger the blanking function. The duration is adjusted
by control input BLANK.
BLANK
0
1
t
BLANK
6/f
OSC
12/f
OSC
Synchronous Rectification.
Logic high applied to
the SR terminal enables synchronous rectification. When a
PWM off cycle is triggered, either by an ENABLE chop
command or internal fixed off time cycle, load current will
recirculate according to the decay mode selected by control
logic. The A3936 synchronous rectification feature will turn
on the appropriate MOSFET(s)during the current decay and
effectively short out the body diodes with the low Rdson
driver. This will lower power dissipation significantly and
can eliminate the need for external schottky diodes.
Reversal of load current is prevented by turning off
synchronous rectification when a zero current level is
detected.
Brake.
Logic high to the brake terminal activates the
brake function, logic low allows normal operation. Brake
will turn all three sink drivers ON and effectively shorts out
the motor generated BEMF. It is important to note that the
internal PWM current control circuit will not limit the
current when braking, since the current does not flow
through the sense resistor. The maximum current can be
approximated by V
BEMF
/R
L
. Care should be taken to insure
that the maximum ratings of the device are not exceeded in
worse case braking situations of high speed and high
inertial loads.
Oscillator.
The PWM timer is based on an internal
oscillator set by a resistor connected from the OSC terminal
to V
DD
. Typical value of 4Mhz is set with 51k resistor.
F
OSC
= 204E9/R
OSC
.
Tach.
A tachometer signal is available for speed
measurement. This open collector output toggles at each
Hall transition.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3936SED-T | DMOS THREE-PHASE PWM MOTOR DRIVER |
| A3938 | Three-Phase Power MOSFET Controller |
| A3938SEQ | Three-Phase Power MOSFET Controller |
| A3938SLD | Three-Phase Power MOSFET Controller |
| A3938SLD-T | Three-Phase Power MOSFET Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3936SED-T | 功能描述:IC MOTOR DRIVER PWM 3PH 44-PLCC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)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(lèi)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(chēng):MTS62C19A-HS105DKR |
| A3936SED-T | 制造商:Allegro MicroSystems 功能描述:Driver IC Output Current Max:3A |
| A3936SEDTR | 功能描述:IC MOTOR DRIVER PWM 3PH 44-PLCC RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)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(lèi)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(chēng):MTS62C19A-HS105DKR |
| A3936SEDTR-T | 功能描述:IC MOTOR DRIVER PWM 3PH 44-PLCC RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)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(lèi)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(chēng):MTS62C19A-HS105DKR |
| A3938 | 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Three-Phase Power MOSFET Controller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。