PWM (Pulse Width Modulation) signal decoder and single-input high-voltage integrated circuit using same

Abstract

The invention discloses a PWM signal decoder and a single-input high-voltage integrated circuit using the PWM signal decoder, and belongs to the technical field of semiconductors, and the PWM signal decoder comprises a cache decoding module which is used for decomposing a PWM signal; the cache logic control module is used for decomposing an EN enable signal; the output end of the first NOT gate is electrically connected with the first input end of the AND gate, the EN1 enable output end, the EN2 enable output end and the EN3 enable output end are electrically connected with the corresponding input ends of the first NOT gate in the cache register module respectively, and the PWM1 output end, the PWM2 output end and the PWM3 output end are electrically connected with the corresponding second input end of the AND gate in the cache register module respectively. The single-input high-voltage integrated circuit comprises a PWM signal decoder and a high-side driving circuit module. The PWM signal decoder and the single-input high-voltage integrated circuit using the same solve the problem that an existing high-voltage integrated circuit needs too many pins.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a PWM signal decoder and a single-input high-voltage integrated circuit using the same. Background technique [0002] The high-voltage integrated circuit is used to receive the PWM control signal of the MCU, and then output the drive signal to drive the subsequent IGBT tube or MOS tube to work, so as to achieve the purpose of controlling peripheral devices. At present, the PWM control signal of the six-channel high-voltage integrated circuit is provided by the external MCU. The high-voltage integrated circuit needs six pins to receive its corresponding PWM control signal, so the high-voltage integrated circuit needs to be set with more pins, resulting in The high-voltage integrated circuit package will be larger, so that the space occupied by the circuit in which it is applied will also increase. SUMMARY OF THE INVENTION [0003] In view of the above-mentioned defects, ...

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Problems solved by technology

[0003] In view of the above-mentioned defects, an object of the present invention is to propose a PWM signal decoder, which solves the problem of too many pins required by existing high-voltage integrated circuits

[0004] In view of the above defects, another object of the present invention is to propose a single-input high-voltage integrated circuit, which solves the problem of too many pins required by existing high-voltage integrated circuits

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