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參數資料
| 型號： | L9942XP1TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO24 |
| 封裝： | ROHS COMPLIANT, SSOP-24 |
| 文件頁數： | 1/40頁 |
| 文件大小： | 639K |
| 代理商： | L9942XP1TR |
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May 2009
Doc ID 11778 Rev 6
1/40
1
L9942
Integrated stepper motor driver for bipolar stepper motors
with microstepping and programmable current profile
Features
■ Two full bridges for max. 1.3 A load
(RDSON = 500 mΩ)
■ Programmable current waveform with look-up
table: 9 entries with 5 bit resolution
■ Current regulation by integrated PWM
controller and internal current sensing
■ Programmable stepping mode: full, half, mini
and microstepping
■ Programmable slew rate for EMC and power
dissipation optimization
■ Programmable Fast-, Slow-, Mixed- and Auto-
Decay Mode
■ Full-scale current programmable with 3 bit
resolution
■ Programmable stall detection
■ Step clock input for reduced Controller
requirements
■ Very low current consumption in standby mode
IS < 3 A, typ. Tj ≤ 85 °C
■ All outputs short circuit protected with
openload, overload current, temperature
warning and thermal shutdown
■ The PWM signal of the internal PWM controller
is available as digital output.
■ All parameters are guaranteed for 3 V < Vcc <
5.3 V and for 7 V < Vs < 20 V
Applications
Stepper motor driver for bipolar stepper motors in
automotive applications like light levelling,
Bending light and Throttle control.
Description
The L9942 is an integrated stepper motor driver
for bipolar stepper motors with microstepping and
programmable current profile look-up-table to
allow a flexible adaptation of the stepper motor
characteristics and intended operating conditions.
It is possible to use different current profiles
depending on target criteria: audible noise,
vibrations, rotation speed or torque. The decay
mode used in PWM-current control circuit can be
programmed to slow-, fast-, mixed-and auto-
decay. In autodecay mode device will use slow
decay mode if the current for the next step will
increase and the fast decay or mixed decay mode
if the current will decrease. The programmable
stall detection is useful in case of head lamp
leveling and bending light application, by
preventing to run the motor too long time in stall
for position alignment. If a stall is detected, the
alignment process is closed and the noise is
minimized.
PowerSSO24
Table 1.
Device summary
Order code
Junction temp. range,
°CPackage
Packing
L9942XP1
-40 to 150
PowerSSO24
Tube
L9942XP1TR
-40 to 150
PowerSSO24
Tape and reel
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相關代理商/技術參數 |
參數描述 |
|---|---|
| L9946 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| L9947 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER |
| L9947L | 制造商:STMicroelectronics 功能描述: |
| L9947S | 功能描述:馬達/運動/點火控制器和驅動器 Quad Half Bridge RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L9949 | 功能描述:功率驅動器IC Door Actuator RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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