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参数资料
| 型号： | L6219DS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| 封装： | SOIC-24 |
| 文件页数： | 5/8页 |
| 文件大小： | 961K |
| 代理商： | L6219DS |
L6219DS
DUAL FULL-BRIDGE
MOTOR DRIVER
LOGIC CONTROL OF OUTPUT CURRENT
Two logic level inputs (l
0 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 o all drivers in the
bridge and can be used as an OUTPUT ENABLE function.
CURRENT-CONTROL TRUTH TABLE
l
0
I
1
Output Current
L
V
REF /10 RS = I TRIP
H
L
V
REF /15 RS = 2/3 I TRIP
L
H
V
REF /30 RS = 1/3 I TRIP
0
H
These logic level inputs greatly enhance the implementation of
P-controlled drive formats.
During half-step operations, the l
0 and l 1 allow the P to control the
motor at a constant torque between all positions in an eight-step
TYPICAL APPLICATION
sequence. 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 l
0 and l 1
turn o 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’ condi-
tions and/or increased current (and available
torque) for start-up conditions.
GENERAL
The PHASE input to each bridge
determines the direction motor winding
current ows. An internally generated
deadtime (approximately 2 s) prevents
crossover currents that can occur when
switching the PHASE input.
All four drivers in the bridge output can
be turned o between steps (l
0 = l 1 ≥ 2.4 V)
resulting 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 applications. The PHASE, l
0, and I1
inputs oat high.
Varying the reference voltage (V
REF )
provides continuous control of the peak load
current for microstepping applications.
Thermal protection circuitry turns o all
drivers when the junction temperature
reaches +170°C. It is only intended 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 +145°C.
The L6219DS output drivers are opti-
mized 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 excellent thermal proper-
ties of the batwing package design, this
allows continuous operation of both bridges
simultaneously at 500 mA.
FROM
P
V
REF
Dwg. EP-008B1
V
BB
FROM
P
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 C
R T
C
T
C C
C
+
PWM
1
PWM
2
θ1
820 pF
56 k
C T
820 pF
56 k
R T
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6219DS013TR | 功能描述:马达/运动/点火控制器和驱动器 Dual Stepper Motor RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| L6219DS013TRE | 制造商:STMicroelectronics 功能描述: |
| L6219DSA | 功能描述:马达/运动/点火控制器和驱动器 Dual Stepper Motor RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| L6219DSA_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Stepper motor driver for automotive range |
| L6219DSA13TR | 功能描述:马达/运动/点火控制器和驱动器 Dual Stepper Motor RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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