超聲電機驅(qū)動IC中的H橋電路設(shè)計
發(fā)布時間：2018-11-09 09:04
【摘要】：隨著微型嵌入式電子設(shè)備與高精密機電設(shè)備產(chǎn)品的不斷發(fā)展,對電機與驅(qū)動系統(tǒng)的一體化、小型化要求也日益迫切。超聲電機具有小體積、高扭矩、響應(yīng)快等優(yōu)勢,使其成為理想的微型電機,但超聲電機對驅(qū)動器高輸出電壓的要求使其驅(qū)動電路體積的縮小較難實現(xiàn)。隨著高壓集成電路工藝的發(fā)展以及新型超聲電機工作電壓的降低,讓設(shè)計單芯片、無變壓器的超聲電機驅(qū)動成為可能。為了設(shè)計一款單片集成的超聲電機驅(qū)動IC,本文提出一種用于超聲電機驅(qū)動IC的H橋電路,該電路基于特征尺寸為0.35μm、最高器件耐壓40V的BCD芯片制造工藝,使用高壓LDMOS器件作為功率開關(guān),能夠直接驅(qū)動工作電壓在40V及以內(nèi)的超聲電機。內(nèi)部集成兩個對稱的超聲電機H橋驅(qū)動電路,輸入與輸出獨立設(shè)計,其頻率、相位參數(shù)可由外部激勵源自由調(diào)節(jié),滿足超聲電機對兩路相位差90°驅(qū)動電壓輸入的需求,且無需片外器件,最大限度地縮小超聲電機驅(qū)動系統(tǒng)的體積。本文所設(shè)計的H橋電路采用自適應(yīng)與固定死區(qū)時間相結(jié)合的死區(qū)時間控制方法,合理設(shè)計柵驅(qū)動器結(jié)構(gòu),提升了LDMOS的開關(guān)速度。使用了高性能、低功耗的電平位移電路,實現(xiàn)了片內(nèi)低壓邏輯電平向高壓柵驅(qū)動信號轉(zhuǎn)換的功能,且通過一系列措施優(yōu)化了電平位移電路的建立時間與穩(wěn)定性。本H橋電路使用了無片外輸出電容的柵驅(qū)動線性穩(wěn)壓器,并借助自適應(yīng)偏置電流和實時補償切換技術(shù),提高了其在高瞬態(tài)負(fù)載電流環(huán)境下的相應(yīng)性能�；谝陨蟽�(yōu)化技術(shù),本H橋電路可在0~3MHz寬頻率范圍工作,靜態(tài)功耗最低僅有80μA。
[Abstract]:With the development of micro embedded electronic equipment and high precision electromechanical equipment, the integration of motor and drive system, miniaturization is becoming more and more urgent. Ultrasonic motor has the advantages of small volume, high torque and fast response, which makes it an ideal miniature motor. However, the requirement of high output voltage of ultrasonic motor makes it difficult to reduce the volume of drive circuit. With the development of HV IC technology and the decrease of working voltage of new ultrasonic motor, it is possible to design single chip and transformer free ultrasonic motor drive. In order to design a monolithic integrated ultrasonic motor driven IC, this paper presents an H-bridge circuit for ultrasonic motor driving IC. The circuit is based on the fabrication process of a BCD chip with a characteristic size of 0.35 渭 m and a maximum voltage of 40V. Using high voltage LDMOS device as power switch, ultrasonic motor with working voltage of 40 V and less than 40 V can be driven directly. Two symmetrical H-bridge drive circuits of ultrasonic motor are integrated inside, the input and output are designed independently, its frequency and phase parameters can be freely adjusted by external excitation source, which can meet the demand of ultrasonic motor for the 90 擄drive voltage input of the two channels of phase difference. Furthermore, the volume of ultrasonic motor drive system is minimized without the need of out-of-chip devices. The H bridge circuit designed in this paper adopts the dead-time control method which combines adaptive control and fixed dead-time. The gate driver structure is designed rationally and the switching speed of LDMOS is improved. The high performance and low power level displacement circuit is used to realize the conversion function of the low voltage logic level to the high voltage gate driving signal. The establishment time and stability of the level displacement circuit are optimized by a series of measures. The H bridge circuit uses a gate driven linear voltage regulator without an output-output capacitor, and improves its performance under high transient load current environment by means of adaptive bias current and real-time compensation switching technology. Based on the above optimization techniques, the H-bridge circuit can work in a wide frequency range of 0~3MHz with the lowest static power consumption of 80 渭 A.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN402;TM359.9
本文編號：2319969
[Abstract]:With the development of micro embedded electronic equipment and high precision electromechanical equipment, the integration of motor and drive system, miniaturization is becoming more and more urgent. Ultrasonic motor has the advantages of small volume, high torque and fast response, which makes it an ideal miniature motor. However, the requirement of high output voltage of ultrasonic motor makes it difficult to reduce the volume of drive circuit. With the development of HV IC technology and the decrease of working voltage of new ultrasonic motor, it is possible to design single chip and transformer free ultrasonic motor drive. In order to design a monolithic integrated ultrasonic motor driven IC, this paper presents an H-bridge circuit for ultrasonic motor driving IC. The circuit is based on the fabrication process of a BCD chip with a characteristic size of 0.35 渭 m and a maximum voltage of 40V. Using high voltage LDMOS device as power switch, ultrasonic motor with working voltage of 40 V and less than 40 V can be driven directly. Two symmetrical H-bridge drive circuits of ultrasonic motor are integrated inside, the input and output are designed independently, its frequency and phase parameters can be freely adjusted by external excitation source, which can meet the demand of ultrasonic motor for the 90 擄drive voltage input of the two channels of phase difference. Furthermore, the volume of ultrasonic motor drive system is minimized without the need of out-of-chip devices. The H bridge circuit designed in this paper adopts the dead-time control method which combines adaptive control and fixed dead-time. The gate driver structure is designed rationally and the switching speed of LDMOS is improved. The high performance and low power level displacement circuit is used to realize the conversion function of the low voltage logic level to the high voltage gate driving signal. The establishment time and stability of the level displacement circuit are optimized by a series of measures. The H bridge circuit uses a gate driven linear voltage regulator without an output-output capacitor, and improves its performance under high transient load current environment by means of adaptive bias current and real-time compensation switching technology. Based on the above optimization techniques, the H-bridge circuit can work in a wide frequency range of 0~3MHz with the lowest static power consumption of 80 渭 A.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN402;TM359.9
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