Frequency limiting control hybrid integrated circuit

Abstract

The invention relates to a frequency limiting control hybrid integrated circuit which comprises differential operational, compensation amplification, hysteresis comparator, totem-pole drive output and reference voltage circuits. The differential operational circuit carries out proportional amplification output on an external input control signal. The output signal of the differential operational circuit and second reference voltage are compensated and amplified by the compensation amplification circuit, and are used as the same-phase end input signal of the hysteresis comparator circuit. First reference voltage is used as the reverse-phase end input signal of the hysteresis comparator circuit. The hysteresis comparator circuit outputs PWM waveform with the duty cycle from 0 to100%. The PWM waveform is used as a drive output end through the totem-pole drive output circuit. The external control signal is a triangular wave signal sampled from a system, is amplified and compared to form a PWM signal, and is output by a totem pole. A reliable drive signal is provided for a post-stage power circuit of the system. The power supply voltage of the system is detected.

Description

technical field [0001] The invention relates to a frequency-limiting control hybrid integrated circuit based on a full-chip soldering process of an aluminum oxide substrate. The output driving signal is stable, the differential amplification precision is high, and the differential amplification circuit realizes adjustable gain through an external adjustment terminal. The amplifying circuit is isolated from the comparison circuit, and the totem pole driving output circuit provides a driving current output driving current of 600mA. The signal duty cycle can be continuously adjusted from 0 to 100% with the external feedback signal. It is a hybrid integrated circuit that can meet the long-term and reliable use in the space environment. . Background technique [0002] In the space system, due to the higher and higher management requirements of the power supply system, the longer and longer working hours of the system, the smaller and smaller circuit volume required, the higher an...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a control circuit with high reliability, long working life, resistance to various radiations in space, and frequency-limited control circuit in order to solve the requirements of similar products with large volume and less than 15 years of reliable life.

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