High-voltage integrated circuit and control method thereof

Abstract

The invention discloses a high-voltage integrated circuit, and belongs to the technical field of semiconductors, the rising edge output end of a first monopulse GEN is electrically connected with the input end of a first OR gate, and the falling edge output end of the first monopulse GEN is electrically connected with the input end of a second OR gate; a reset pin of the shift register is electrically connected with a reset signal output end of the MCU processor, and a clock pin of the shift register is electrically connected with a PWM (Pulse Width Modulation) output end of the MCU processor; the output end of the shift register is electrically connected with the input end of the second single pulse GEN, the rising edge output end of the second single pulse GEN is electrically connected with the input end of the first OR gate, and the falling edge output end of the second single pulse GEN is electrically connected with the input end of the second OR gate. The invention further discloses a control method of the high-voltage integrated circuit. According to the high-voltage integrated circuit and the control method thereof, the problem that the control signal generated by the RS trigger is inaccurate is solved.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a high-voltage integrated circuit and a control method thereof. Background technique [0002] High-voltage integrated circuits, or HVICs, are integrated circuit products that convert MCU signals into signals that drive IGBT tubes or MOS tubes. Such as figure 1 As shown, HVIC integrates PMOS tubes, NMOS tubes, transistors, diodes, voltage regulator tubes, resistors and capacitors together to form Schmitt, low-voltage LEVELSHIFT, high-voltage LEVELSHIFT, pulse generation circuit, delay circuit, filter circuit, overcurrent Protection circuit and overheating protection circuit, undervoltage protection circuit and bootstrap circuit and other circuits. [0003] The high-side driving unit 5 of the existing HVIC includes an N-channel DMOS transistor Q1, an N-channel DMOS transistor Q2, and an RS flip-flop 51. The single-pulse GEN generates pulses according to the HIN signal inpu...

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Problems solved by technology

[0004] In view of the above-mentioned defects, an object of the present invention is to propose a high-voltage integrated circuit, which solves the problem of inaccurate control signals generated by the RS flip-flop of the existing high-voltage integrated circuit

[0005] In view of the above defects, another object of the present invention is to propose a control method for high-voltage integrated circuits, which solves the problem of inaccurate control signals generated by the RS flip-flops of existing high-voltage integrated circuits

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