L295 principle block diagram and connection circuit

Pin 9 is externally connected to the RC network. The parameters shown in Figure 11-23 are stable at about
25kHz. It can be seen from the chopper control chart that when V. . When the level is high, only the high-voltage switch
(vl) is switched, V, is maintained on, and the freewheeling path of the coil
is VDz-coil-v, -ground, which is equivalent to freewheeling through the short circuit of the carrier coil. When y． ． When it becomes zero, V, and V:
cut off, the coil freewheeling path becomes ground-VD2-coil-VDl-Vs, the coil electromagnetic energy
is released to the power supply, and the current decays much faster than the previous method. This is the advantage of using a coil driver
with two switches on the high and low sides instead of just one switch .