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參數(shù)資料
| 型號： | L6219R013TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| 封裝： | SOP-24 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 211K |
| 代理商： | L6219R013TR |
L6219R
Functional description
3.4
Single-pulse generator
The pulse generator is a monostable triggered on the positive going edge of the comparator
output. The monostable output is high during the pulse time, toff , which is determined by
the time components Rt and Ct.
toff = 1.1 RtCt
The single pulse switches off the power feed to the motor winding, causing the winding
current to decrease during toff. If a new trigger signal should occur during toff, it is ignored.
3.5
Output stage
The output stage contains four darlington transistors (source drivers) four saturated
transistors (sink drivers) and eight diodes, connected in two H bridge.
Figure 4.
Principle operating sequence
The source transistors are used to switch the power supplied to the motor winding, thus
driving a constant current through the winding. It should be noted however, that is not
permitted to short circuit the outputs.
Internal circuitry is added in order to increase the accuracy of the motor current particularly
with low current levels.
3.6
VS, VSS, VRef
The circuit will stand any order of turn-on or turn-off the supply voltages VS and VSS. Normal
dV/dt values are then assumed.
Preferably, VRef should be tracking VSS during power-on and power-off if VS is established.
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相關(guān)代理商/技術(shù)參數(shù) |
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| L6219-S24-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:DUAL FULL-BRIDGE PWM MOTOR DRIVER |
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| L621C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|120V V(RRM)|46A I(T) |
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| L622 | 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Power Modules |
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