UC1517
UC3517
Figure 5. Logic Flow Graph
For applications requiring very fast step rates, a zener diode not overshoot past 40V. If the zener diodes are not used and
permits windings to discharge at higher voltages, and higher UC3610 pin 2 is connected directly to Vss then higher Vss can
rates. Driver transistor breakdown must be considered when be used.
selecting Vss and zener voltage to insure that the outputs will
Figure 6. Bilevel Motor Driver
5