A high-voltage charging circuit for controlling adaptive regulation of pulses

Abstract

A high voltage charging circuit for controlling adaptive regulation of pulses comprises a microcontroller, a pulse adaptive regulation controlling circuit, a flyback high-voltage charging circuit andan energy storage capacitor, wherein the energy storage capacitor is used for storing high-voltage energy, and the microcontroller can output a charging control signal and a plurality of reference voltages to the control pulse adaptive regulating circuit and detect the feedback voltage of the energy storage capacitor in real time; The control pulse adaptive regulating circuit can compare the multi-channel feedback voltages of the flyback high voltage charging circuit and the energy storage capacitor with the corresponding reference voltages output by the microcontroller, output pulse control signals after analyzing by the logic control circuit, and control the on-off of the flyback high voltage charging circuit; and the control pulse adaptive regulating circuit can regulate the on-off of the flyback high voltage charging circuit. The flyback high voltage charging circuit is used for charging the energy storage capacitor. The charging process is optimized, the energy storage capacitor can be charged efficiently and quickly, and the high-voltage charging circuit is suitable for an implantable defibrillator or an external defibrillator and other occasions requiring high-voltage charging.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a high-voltage charging circuit for self-adaptive regulation of control pulses. Background technique [0002] Sudden cardiac death is a serious threat to human life and has become a global public health problem due to its high incidence and high mortality. Ventricular fibrillation is the main cause of sudden cardiac death, and the only effective way to terminate ventricular fibrillation is to use electric shock defibrillation within a short time after the occurrence of ventricular fibrillation. Currently, clinical defibrillation technologies include implantable defibrillators and external defibrillators, both of which use high-voltage, high-current pulses for defibrillation. The high-voltage charging circuit is one of the core modules of the defibrillator hardware circuit. This module needs to increase the low voltage of the power supply battery to a high voltage and s...

AI Technical Summary

Problems solved by technology

When the transformer and load are determined, the working mode of the flyback switching power supply is determined by the frequency and duty cycle of the pulse signal that controls the on-off of the switch tube; and the adjustment of the control pulse is usually by using mature pulse width modulation (PWM) technology or pulse Frequency modulation (PFM) technology, but neither of them can make the flyback switching power supply always work in a critical state, so when it is used in a defibrillator, it cannot achieve the best charging effect

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