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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MIC4604 датащи(PDF) 14 Page - Micrel Semiconductor |
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MIC4604 датащи(HTML) 14 Page - Micrel Semiconductor |
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14 / 18 page  Micrel, Inc. MIC4604 June 25, 2013 14 Revision 1.0 Figure 10. Half Bridge DC Motor Figure 11. Full Bridge DC Motor Figure 12. 3-Phase Brushless DC Motor Driver – 24V Block Diagram The MIC4604 is offered in a small 2.5mm × 2.5mm TDFN package for applications that are space constrained and an SOIC-8 package for ease of manufacturing. The motor trend is to put the motor control circuit inside the motor casing, which requires small packaging because of the size of the motor. The MIC4604 offers low UVLO threshold and programmable gate drive, which allows for longer operation time in battery operated motors such as power hand tools. Cross conduction across the half bridge can cause catastrophic failure in a motor application. Engineers typically add dead time between states that switch between high input and low input to ensure that the low- side MOSFET completely turns off before the high-side MOSFET turns on and vice versa. The dead time depends on the MOSFET used in the application, but 200ns is typical for most motor applications. Power Inverter Power inverters are used to supply AC loads from a DC operated battery system, mainly during power failure. The battery voltage can be 12VDC, 24VDC, or up to 36VDC, depending on the power requirements. There two popular conversion methods, Type I and Type II, that convert the battery energy to AC line voltage (110VAC or 230VAC). |
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