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參數(shù)資料
| 型號(hào)： | UDQ2916LB-T |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| 封裝： | LEAD FREE, MS-013AD, SOIC-24 |
| 文件頁(yè)數(shù)： | 6/9頁(yè) |
| 文件大?。?/td> | 465K |
| 代理商： | UDQ2916LB-T |
Dual Full-Bridge Motor Driver
2916
6
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-
5000
www.allegromicro.com
LOGIC CONTROL OF OUTPUT CURRENT
Two logic level inputs (I0 and I1) allow digital selection of the motor
winding current at 100%, 67%, 33%, or 0% of the maximum level per the
table. The 0% output current condition turns off all drivers in the bridge and
can be used as an OUTPUT ENABLE function.
CURRENT-CONTROL TRUTH TABLE
l0
I1
Output Current
L
VREF/10 RS = ITRIP
H
L
VREF/15 RS = 2/3 ITRIP
L
H
VREF/30 RS = 1/3 ITRIP
H
0
These logic level inputs greatly enhance the implementation of microprocessor
controlled drive formats.
During half-step operations, the I0 and I1 allow the microprocessor to
control the motor at a constant torque between all positions in an eight-step se-
TYPICAL APPLICATION
quence. This is accomplished by digitally selecting
100% drive current when only one phase is on and
67% drive current when two phases are on. Logic
highs on both I0 and I1 turn-off all drivers to allow
rapid current decay when switching phases. This
helps to ensure proper motor operation at high step
rates.
The logic control inputs can also be used to
select a reduced current level (and reduced power
dissipation) for "hold" conditions and/or increased
current (and available torque) for start-up condi-
tions.
GENERAL
The PHASE input to each bridge determines
the direction motor winding current ows. An in-
ternally generated dead time (approximately 2 μs)
prevents crossover currents that can occur when
switching the PHASE input.
All four drivers in the bridge output can be
turned-off between steps (I0 = I1 ≥ 2.4 V), result-
ing in a fast current decay through the internal
output clamp and yback diodes. The fast current
decay is desirable in half-step and high-speed ap-
plications. The PHASE, I0,and I1 inputs oat high.
Varying the reference voltage, VREF , pro-
vides continuous control of the peak load current
for micro-stepping applications.
Thermal protection circuitry turns-off all
drivers when the junction temperature reaches
+170°C. It is only intended to protect the device
from failures due to excessive junction tempera-
ture and should not imply that output short circuits
are permitted. The output drivers are re-enabled
when the junction temperature cools to +145°C.
The UDx2916 output drivers are optimized
for low output saturation voltages—less than 1.8 V
total (source plus sink) at 500 mA. Under normal
operating conditions, when combined with the ex-
cellent thermal properties of the package designs,
this allows continuous operation of both bridges
simultaneously at 500 mA.
FROM
μP
V
REF
Dwg. EP-008B1
V
BB
FROM
μP
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
θ 2
VCC
2
VBB
1
V
REF
+5 V
STEPPER
MOTOR
R
S
R
S
R
C
R
C
R
T
C
T
C
+
PWM
1
PWM
2
θ1
820 pF
56 k
Ω
C
T
820 pF
56 k
Ω
R
T
TRUTH TABLE
PHASE
OUTA
OUTB
H
L
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UDQ2916LBTR | 功能描述:IC MOTOR DRIVER PWM DUAL 24SOIC RoHS:否 類別: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 |
| UDQ2916LBTR-T | 功能描述:IC MOTOR DRIVER PWM DUAL 24SOIC RoHS:是 類別: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 |
| UDQ2917EB | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| UDQ2936W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| UDQ2936W-120 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER |
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