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參數資料
| 型號： | L6223A |
| 文件頁數： | 26/33頁 |
| 文件大?。?/td> | 1335K |
| 代理商： | L6223A |
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Matching the L6223A with the motor.
For the correct design of the application the fol-
lowing notesmust be considered.
* For low motor resistance and high supply volt-
age the L6223A minimum duty cycle may limit
the minimum current at a value higher than re-
quested.
In this case we suggest to reduce the window
protection time changing the RC oscillator net-
work. (See Fig. 21a and ExternalRC Network).
* Only in single device application, for very low
motor resistance, a large current imbalance
may affect the correct motor rotation. Motor re-
sistance value higher than 7 Ohm are generally
recommended for 35VPower Supply.
* The correct motor winding executionis very im-
portant for the motor and the L6223Aefficiency.
A simple test is the measurement of the stray
inductance between the central tap and the
ends shorted together of each winding. Theo-
retically the inductance would be zero; values
higher than 50
μ
H may showpoor motor quality.
Computer Aided Development Board
An improvement in the application development
and in system debugging can be obtained by
means of the PersonalComputer.
Interfacing the appliction with the PC, the motor
can be driven directly by this in real time opera-
tion. This permits the testing in very short time
and a lot of different motion configurations, during
application debugging and optimization. More-
over, by paralleling more application boards, an
efficient reliability test can be implemented.
The
development board
L6223A in Single and Dual Device configuration
is shown in Fig. 32a-b. Fig. 33 is the correspond-
ing electrical circuit. On the board are mounted
three L6223A: two for the Dual Device configura-
tion and one for the Single Device. The three con-
nectors J1, J2, J3 allow the application board to
be interfaced with the PC and to be paralleled
with another one. The remaining connectors pro-
vide the interface with the motor and the power
and logic supply. The ground area has been sized
to act as heatsink (35 micron thickness). When
the copper area is not sufficient to dissipate the
heat an externalheatsinkis required.
designed
to
drive
L6223A
26/33
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相關代理商/技術參數 |
參數描述 |
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| L6225 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS DUAL FULL BRIDGE DRIVER |
| L6225_03 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS DUAL FULL BRIDGE DRIVER |
| L6225D | 功能描述:馬達/運動/點火控制器和驅動器 Dual Full 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 |
| L6225DTR | 功能描述:馬達/運動/點火控制器和驅動器 Dual Full 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 |
| L6225N | 功能描述:馬達/運動/點火控制器和驅動器 Dual Full 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 |
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