Apparatus for generating high dynamic range, high voltage source using low voltage transistors

摘要

The present disclosure provides a varying high voltage source implemented with low voltage domain electronic components that are less costly to manufacture. According to one aspect, the present disclosure provides a high voltage circuit apparatus comprising a pull up resistance module, a plurality of cascode cell stages, a first of the cascode cell stages being coupled to the pull up resistance module, a low voltage domain current sink module coupled to a last of the cascode cell stages, and a clamping voltage source coupled to the last of the cascode cell stages. The circuit apparatus is devoid of high-voltage transistor components.

主权项

1. A high voltage circuit apparatus comprising:
a pull up resistance module including a high voltage source and an output to provide an output voltage; a plurality of cascode cell stages coupled to one another, a first of the cascode cell stages being coupled to the pull up resistance module; wherein each of the cascode cell stages comprises:
an output current leg having a first end and a second end;a bias current leg having a first end and a second end; anda voltage drop leg having a first end and a second end and a voltage drop element coupled between the first and second ends of the voltage drop leg; a low voltage domain current mirror module coupled to the second end of the output current leg of a last of the cascade cell stages and coupled to the second end of the bias current leg of the last cascode cell stage; and a clamping voltage source module comprising a voltage source and a zero threshold voltage native transistor having a source node coupled to the voltage drop leg second end of the last of the cascode cell stages, and a gate node and drain node shorted together and coupled to an output of the voltage source, wherein the circuit apparatus is devoid of high-voltage transistor components.