Power motor driver composed of IN8510 and DAC7520
Source: InternetPublisher:ghaytweyhtoo Keywords: DAC motor driver switch CMOS Updated: 2021/10/21
Using two BTS412B as high-side switches and two BU271L power MOSFETs
(50v, 䉉1n) as low-side switches, an H-bridge bidirectional DC motor drive circuit can be formed,
as shown in Figure 11-1l. This circuit is designed for an electrical automatic door with a continuous current of 6A.
The four-leg switch is controlled directly by CMOS logic levels. The two BTS412B status outputs
are driven by a transistor with OR logic and an LED indicates the fault status. The middle point of the left bridge arm
is connected to a 12ktl resistor to the ground so that when all four switches of the H-bridge are turned off, the BTS412B will not
mistake it for an open load. Once a load open circuit occurs, the BTS412B on the right can detect
it and send a fault signal.
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