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XP Power’s High Voltage DC to DC converters can be divided into two major categories: proportional and regulated. Proportional converters provide a high voltage output which is directly proportional to the input voltage applied, rather like a high voltage output DC transformer. As shown here on the graph, the high voltage output is directly proportional to the applied input voltage, with a completely linear relationship, from input voltages as low as 0.7VDC, providing a wide output voltage range from a single device. Many converters feature a control input to enable on/off control from a low voltage logic level signal. Proportional converters also feature input to output isolation enabling configuration of the output as positive or negative in most cases. These devices are not regulated meaning that the output is sensitive to output load changes as well as input voltage changes. The graph shows the difference in output voltage when the load is varied from zero to full power for a typical proportional converter. The available output power is a factor of output voltage, with the maximum power available at the maximum rated output voltage. Proportional converters are lower cost and smaller size when compared to fully regulated versions and are ideal for a wide range of applications.
