PTAT reference current source circuit with high-voltage power supply
A reference current source and high-voltage power supply technology, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of being unable to withstand high voltage, accelerating the power-on start-up process, and slow start-up speed
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[0024] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] Such as figure 2 Shown is a PTAT reference current source circuit for high-voltage power supply proposed by the present invention, including a current sink module and a PTAT reference current generation module, wherein the PTAT reference current generation module includes a first PNP transistor Q1, a second PNP transistor Q2, The second resistor R2, the first capacitor C, the third PMOS transistor P3, the fourth PMOS transistor P4, the third NMOS transistor N3, the fourth NMOS transistor N4 and the fifth NMOS transistor N5, the base of the first PNP transistor Q1 and The collectors are interconnected and connected to the base of the second PNP transistor Q2 and the source of the third PMOS transistor P3, and its emitter is connected to the supply voltage VCC; the collector of the second PNP transistor Q2 is ...
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