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參數(shù)資料
| 型號(hào)： | UDQ2543EB |
| 廠(chǎng)商： | Allegro MicroSystems, Inc. |
| 英文描述： | PROTECTED QUAD POWER DRIVER |
| 中文描述： | 四功率驅(qū)動(dòng)保護(hù) |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 135K |
| 代理商： | UDQ2543EB |
2543
PROTECTED
QUAD POWER DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
TYPICAL OUTPUT BEHAVIOR
CIRCUIT DESCRIPTION AND APPLICATION
INCANDESCENT LAMP DRIVER
For incandescent lamp applications, the UDx2549B/EB or
UDx2559B/EB, with improved shortcircuit protection and thermal
limiting, are recommended.
INDUCTIVE LOAD DRIVER
Bifilar (unipolar) stepper motors, relays, or solenoids can be driven
directly. The internal flyback diodes prevent damage to the output
transistors by suppressing the high-voltage spikes that occur when
turning OFF an inductive load. For rapid current decay (fast turn-OFF
speeds), the use of Zener diodes will raise the flyback voltage and
improve performance. However, the peak voltage must not exceed the
specified minimum sustaining voltage (V
SUPPLY
+ V
Z
+ V
F
≤
V
OUT(SUS)
).
FAULT CONDITIONS
In the event of a shorted load, the load current will attempt to
increase. As described above, the drive current to the affected
output stage is diverted, causing the output stage to go linear, limiting
the peak output current to approximately 1 A. As the power dissipation
of that output stage increases, a thermal gradient sensing circuit will
become operational, further decreasing the drive current to the af-
fected output stage and reducing the output current to a value depen-
dent on supply voltage (I
OUT
≈
2.4/V
SUPPLY
). If the fault condition is
corrected, the output stage will return to its normal saturated condition.
Due to the independent operation of the four channels, only
a single channel should be shorted at a time. Multiple overload
conditions may be tolerated provided rated package power
dissipation is not exceeded.
NORMAL LOAD
TIME
Dwg. WP-013-1
NOT TO SCALE
O
CURRENT LIMIT (12 V SUPPLY)
SHORT CIRCUIT
CURRENT LIMIT (24 V SUPPLY)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UDN2543 | PROTECTED QUAD POWER DRIVER |
| UDN2543B | PROTECTED QUAD POWER DRIVER |
| UDN2543EB | PROTECTED QUAD POWER DRIVER |
| UDQ2543 | Quad Power Driver Providing Interface Between Low-Level Logic and Power Loads to 100 W(為低電平邏輯和100W功率負(fù)載間提供接口的四路功率驅(qū)動(dòng)器) |
| UDQ2547B | PROTECTED QUAD POWER DRIVERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UDQ2544B | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Interface IC |
| UDQ2547B | 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Protected Quad Driver |
| UDQ2547EB | 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:Protected Quad Driver |
| UDQ2549B | 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:PROTECTED QUAD POWER DRIVER |
| UDQ2549EB | 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:PROTECTED QUAD POWER DRIVER |
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