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參數(shù)資料
| 型號： | UC2638J |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.5 A, CDIP20 |
| 封裝： | CERAMIC, DIP-20 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 304K |
| 代理商： | UC2638J |
6
UC1638
UC2638
UC3638
The UC3638 is designed to provide pulse width modula-
tion control of DC brush motors in applications requiring
precision torque, velocity, or position control. Due to its
high frequency capability, other high power applications
such as switch mode audio amplifiers can also be ad-
dressed. Through a combination of circuit sophistication
and integration, the designer can maintain a high level
of flexibility, while reducing cost compared to solutions
using other PWM ICs.
Figure 1 shows a typical application circuit for the
UC3638. By taking advantage of the UC3638's many in-
tegrated functions, a low cost and compact average cur-
rent mode motor controller can be designed. Depending
on the level of complexity, as many as 15 discrete com-
ponents and an additional high bandwidth amplifier can
be saved compared to a similar circuit using the
UC3637 PWM controller.
Oscillator Section and Modulation Scheme
Figure 2 depicts the UC3638 oscillator and PWM wave-
forms for the condition where the output of the voltage
amplifier (COMP) is at the null point (same voltage as
AREF). For applications using split voltage supply rails,
AREF will normally be tied to system ground. This re-
sults in a voltage null point of zero volts. For this condi-
tion, AREFIN should be tied to the negative voltage sup-
ply rail (VEE), which disables the internal voltage buffer,
allowing AREF to be tied to ground. For a single supply
system, AREFIN should be left open circuit, and AREF
should be decoupled to VEE (system ground) with at
least 0.1
F. The resulting voltage null point for this case
APPLICATION INFORMATION
Figure 1. Average Motor Current Control Loop
UDG-95049-2
Figure 2. Oscillator and PWM Waveforms
UDG-95068-1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UC2638N | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Advanced PWM Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| UC2638NG4 | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Advanced PWM Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| UC2638Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| UC2638QTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| UC2638-W | 制造商:Texas Instruments 功能描述:WAFER FORM - Gel-pak, waffle pack, wafer, diced wafer on film |
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