Many motor and drive systems require a clamp circuit to limit increases in power supply voltage when the motor is decelerating under load. This is commonly referred to as “regeneration”, and occurs when DC motors are driven by their load (backdriving). During regeneration the DC motor can produce enough voltage to actually exceed the input power supply voltage. Applied Motion drives can deal with regeneration by channeling the increased motor voltage back to the source power supply. However, if the voltage is not clamped to a safe level the power supply and/or drive can be damaged or destroyed.