H-bridge driver circuit composed by the Smart SIPMOS

Posted on Mar 28, 2007

BTS412B as two high-side power MOSFET switch and two BU271L (50v, Zhang 1n) for the low-side switch, can be composed of bi-directional H-bridge DC motor drive circuit shown in

H-bridge driver circuit composed by the Smart SIPMOS
Click here to download the full size of the above Circuit.

Figure 11-1l. The circuit is an electrical automatic doors design, continuous current up to 6A. Four-leg switches are directly controlled by CMOS logic levels. Two BTS412B state output of the logical drive or a transistor, the LED displays the fault status. Left leg midpoint -to-ground resistance when 12ktl four H-bridge switches are turned off, will not be BTS412B mistaken Open load. Once open load occurs, the right of BTS412B can detect it and issue a fault signal.

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