Robot power supplies utilize electronic switching devices (such as transistors, field-effect transistors, and silicon controlled thyristors) and control circuits to continuously "turn on" and "turn off" these devices. This allows the electronic switching devices to pulse-modulate the input voltage, thereby achieving DC/AC and DC/DC voltage conversion, as well as adjustable and automatic voltage regulation of the output voltage.
Switching power supplies are typically composed of a pulse-width modulation (PWM) control IC and MOSFETs. Compared to linear power supplies, the cost of both increases with output power, but at different rates. At a certain output power point, the cost of the latter actually exceeds that of the former; this point is called the cost inversion point.
With the development and innovation of power electronics technology, this technology is also constantly being innovated. The cost reversal point is increasingly shifting towards the low-output power end, providing broad development space for robot power supplies.
