L6203 DC motor controller circuit

Posted on Feb 7, 2014

The L620x is a monolithic full bridge switching motor driver realized in the new Multipower-BCD technology which allows the integration of multiple, isolated DMOS power transistors plus mixed CMOS/bipolar control circuits and is available in many versions : L6201 /1PS/2/3. All this motor driver circuits are identically, the differences between t

L6203 DC motor controller circuit
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hem is the total RMS current, which is up to : 1A for L6201, 2A for L6202 and 4A for L6203 and L6201PS. transconductance amplifier for speed control, as shown in this circuit schematic. In this configuration only half of the L6506 is used and the other half of the device may be used to control a second motor. The L6506 senses the voltage across the sense resistor RS to monitor the motor current: it compares the sensed voltage both to control the speed and during the brake of the motor. VS is the maximum Supply Voltage foreseen on the application; Ip is the peak of the load current; dv/dt is the limited rise time of the output voltage (200V/ms is generally used).

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