KR930018528A - Spindle motor braking and head parking control circuit of disk drive unit in case of power failure - Google Patents

Spindle motor braking and head parking control circuit of disk drive unit in case of power failure Download PDF

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Publication number
KR930018528A
KR930018528A KR1019920001705A KR920001705A KR930018528A KR 930018528 A KR930018528 A KR 930018528A KR 1019920001705 A KR1019920001705 A KR 1019920001705A KR 920001705 A KR920001705 A KR 920001705A KR 930018528 A KR930018528 A KR 930018528A
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South Korea
Prior art keywords
spindle motor
head
comparator
power interruption
head parking
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KR1019920001705A
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Korean (ko)
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KR950000049B1 (en
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박중제
박종일
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배순훈
대우전자 주식회사
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20Driving; Starting; Stopping; Control thereof

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  • Rotational Drive Of Disk (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Linear Motors (AREA)

Abstract

본 발명은 전원단전시 스핀들모터제동 및 헤드파킹제어회로에 관한 것으로, 시정수가 다르게 설정된 시정수회로(R1,R2,C1;R3,C2,ZD1)에 의해 전원단전연부를 검출하여 전원단전검출신호를 출력하는 전원단전검출부(1)와, 이 전원단전검출부(1)의 출력에 기초하여 헤드파킹제어용 전압을 발생하는 헤드파킹전압발생부(2), 상기 전원단전검출부(1)의 출력과 스핀들모터(4)의 관성회전에 의한 역기전력을 이용하여 헤드구동용 보이스코일형모터(VCM)를 제어하여 헤드를 안전위지역에 파킹하는 보이스코이형 모터 제어부(3) 및, 상기 헤드파킹전압발생부(2)의 출력에 기초하여 상기 스핀들보터(4)의 관성역기전력에너지를 자체적으로 소모하여 스핀들모터(4)를 동적으로 제동하는 스핀들모터구동제어부(6)으로 구성된다.The present invention relates to a spindle motor braking and a head parking control circuit during power interruption. The present invention provides a power interruption detection signal by detecting a power interruption edge by time constant circuits R1, R2, C1; R3, C2, and ZD1. The power interruption detecting unit 1 for outputting the power, the head parking voltage generating unit 2 for generating the head parking control voltage based on the output of the power interruption detecting unit 1, and the output and the spindle of the power interruption detecting unit 1; Voice-coil motor control unit 3 which controls the head driving voice coil motor (VCM) by using the counter electromotive force by the inertia rotation of the motor 4 to park the head in the safety zone, and the head parking voltage generation unit ( Based on the output of 2) consists of a spindle motor drive control unit 6 for dynamically braking the spindle motor 4 by consuming the inertial back EMF energy of the spindle boat 4 by itself.

Description

전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로Spindle motor braking and head parking control circuit of disk drive unit in case of power failure

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 일실시예에 따른 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로의 상세회로도, 제2도는 본 발명의 다른 실시예에 따른 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로의 상세회로도이다.1 is a detailed circuit diagram of a spindle motor braking and a head parking control circuit of a disk drive apparatus during power interruption according to an embodiment of the present invention, and FIG. 2 is a spindle motor of a disk drive apparatus during power interruption according to another embodiment of the present invention. Detailed circuit diagram of the braking and head parking control circuit.

Claims (7)

스핀들모터(4)와 헤드를 구동하기 위한 보이스코이형 모터(VCM)를 구동하는 보이스코일형 모터구동부(5)를 갖춘 디스크드라이브장치에 있어서, 전원단전에 의한 전원이상여부를 판별하는 전원단전검출부(1)와, 이 전원단전검출부(1)에 의해 전원이상상태가 검출되는 경우 헤드를 안전위치로 퇴피시키기 위한 헤드파킹전압을 발생하는 헤드파킹전압발생부(2), 상기 전원단전검출부(1)에 의해 전원이상이 검출되는 경우 헤드를 안전지역으로 퇴피시키기 위해 보이스코일형 모터(VCM)의 구동을 제어하는 보이스코일형 모터 제어부(3), 전원의 이상이 상기 스핀들모터(4)에서 발생되는 역기전력을 이용하여 상기 스핀들코너(4)를 동적으로 제동제어하는 스핀들모터 구동제어부(6)를 갖추어 구성된 것을 특징으로 하는 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로.A disk drive device having a spindle motor (4) and a voice coil type motor driving part (5) for driving a voice coil type motor (VCM) for driving a head, the power drive disconnection detecting unit for discriminating whether power is abnormal due to a power interruption ( 1), a head parking voltage generation unit 2 for generating a head parking voltage for evacuating the head to a safe position when a power failure state is detected by the power disconnect detection unit 1, and the power disconnect detection unit 1 When the power supply abnormality is detected by the voice coil type motor controller 3 which controls the driving of the voice coil type motor (VCM) to evacuate the head to the safe area, the abnormality of the power source is generated in the spindle motor 4 Spindle model of the disk drive unit during power interruption, characterized in that it comprises a spindle motor drive control unit 6 for dynamically braking the spindle corner (4) by using a counter electromotive force Braking and the head parking control circuit. 제1항에 잇어서, 상기 전원단전검출부(1)는 비교적 긴 시정수를 갖는 시정수회로(R1,R2,C1)가 접속된 비반전입력단자와 상기 시정수회로보다는 짧은 시정수를 갖는 시정수회로(R3,C2)와 정전압소자(ZD1)가 접속된 반전입력단자를 갖춘 제1 비교기(CP1)와, 이 제1 비교기(CP1)의 출력측에 접속된 반전단자와 상기 제1 비교기(CP1)의 반전입력측에 접속된 비반전단자를 갖춘 제2 비교기 (CP2)및, 상기 제1 비교기(CP1)의 출력측에 접속된 비반전단자와 상기 제1 비교기(CP1)의 반전입력측에 접속된 반전단자를 갖춘 제3 비교기(CP3)로 구성된 것을 특징으로 하는 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로.The non-inverting input terminal to which the time constant circuits R1, R2, and C1 having relatively long time constants are connected, and the time constant having a shorter time constant than the time constant circuit. A first comparator CP1 having an inverting input terminal to which the circuits R3 and C2 and the constant voltage element ZD1 are connected; an inverting terminal connected to an output side of the first comparator CP1; and the first comparator CP1. A second comparator (CP2) having a non-inverting terminal connected to the inverting input side of the non-inverting terminal connected to the output side of the first comparator (CP1) and an inverting terminal connected to the inverting input side of the first comparator (CP1). Spindle motor braking and head parking control circuit of the disc drive device, characterized in that consisting of a third comparator (CP3). 제2항에 있어서, 상기 전원단전검출부(1)는 비교적 큰 시정수를 갖는 시정수회로(R4,C3)와 비교적 작은 시정수를 갖는 시정수회로(R3,C2,ZD1)에 의해 전원단전을 검출하는 비교기(CP2,CP3)로 구성된 것을 특징으로 하는 헤트파킹제어회로.3. The power supply disconnection detecting unit (1) according to claim 2, wherein the power disconnection detecting unit (1) performs power interruption by time constant circuits (R4, C3) having relatively large time constants and time constant circuits (R3, C2, ZD1) having relatively small time constants. Het parking control circuit comprising a comparator (CP2, CP3) for detecting. 제1항에 있어서, 상기 헤드파킹전압발생부(2)는 전원단전검출신호에 따라 스위칭동작하는 트랜지스터(TRI)와 이 트랜지스터(TRI)의 스위칭동작에 따라 ON 또는 OFF되는 MOS트랜지스터 (Q1)를 포함하여 구성된 것을 특징으로 하는 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로.2. The head parking voltage generator (2) according to claim 1, wherein the head parking voltage generator (2) turns on a transistor (TRI) for switching in response to a power interruption detection signal and a MOS transistor (Q1) for turning on or off in accordance with a switching operation of the transistor (TRI). Spindle motor braking and head parking control circuit of the disk drive unit in the event of a power failure. 제1항에 있어서, 상기 보이스코일형 모터 제어부(3)는 게이트가 풀업저항(R9) 및 저항(R10)과 캐패시터(C7)의 지연소자를 매개하여 상기 제2 비교기(CP2)의 출력측에 접속됨과 더불어 소오스가 스핀들 모터(4)의 코일(L3)의 일단에 접속되며 드레인이 다이오드(D1)를 매개하여 상기 보이스코일형 모터 구동부(5)와 보이스코일형 모터(VCM)의 일측에 접속된 N채널 MOS트랜지스터(Q2)와, 게이트가 상기 제2 비교기(CP2)의 출력측과 상기 MOS트랜지스터(Q2)의 게이트의 접속접에 접속되는 한편 드레인이 저향(R8)을 매개하여 상기 보이스코일형 모터 구동부(5)와 보이스코일형 모터(VCM)의 다른측에 접속되며 드레인이 접지측에 접속된 MOS 트랜지스터(Q3)로 구성된 것을 특징으로 하는 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로.2. The voice coil type motor controller 3 is connected to the output side of the second comparator CP2 via a pull-up resistor R9 and a delay element between the resistor R10 and the capacitor C7. In addition, the source is connected to one end of the coil L3 of the spindle motor 4 and the drain is connected to one side of the voice coil type motor driver 5 and the voice coil type motor VCM via the diode D1. The voice coil-type motor is connected to an N-channel MOS transistor Q2 and a gate thereof is connected to an output side of the second comparator CP2 and a gate of the MOS transistor Q2 while a drain is connected via a bottom line R8. Spindle motor braking and head parking control of a disk drive device during power interruption, comprising a MOS transistor Q3 connected to the drive unit 5 and the other side of the voice coil type motor VCM and whose drain is connected to the ground side. Circuit. 제1항에 있어, 상기 스핀들모터구동제어부(6)는 일단이 저항(R16)과 캐패시터(C8)의 시정수소자에 접속된 복수의 저항(R11~R15)과, 각각의 게이트가 상기 저항(R11)의 다른 단을 매개하여 스핀들모터구동집적회로(IC1)의 각 출력단(IP1~IP6)에 접속된 복수의 N채널 및 P채넘 MOS트랜지스터 (Q4~Q9)와 게이트에 PWM듀티 제어신호가 인가되는 MOS트랜지스터(Q10)를 갖추어서 구성되고, 상기 MOS트랜지스터(Q6,Q8)에 의해 상기 스핀들모터(4)의 역기전력 순환루우프가 형성되는 것을 특징으로 하는 전원단전시 디스크드라이브장치의 스핀들모터제동 및 헤드파킹제어회로.2. The spindle motor drive control section (6) according to claim 1, wherein one end of the spindle motor drive control section (6) has a plurality of resistors (R11 to R15) connected to a time constant element of a resistor (R16) and a capacitor (C8), and each gate is connected to the resistor ( The PWM duty control signal is applied to the gates and the N-channel and P-channel MOS transistors Q4 to Q9 connected to each output terminal IP1 to IP6 of the spindle motor driving integrated circuit IC1 via the other stage of R11). And a MOS transistor (Q10) to be formed, and the MOS transistor (Q6, Q8) is formed by the reverse motor circulating loop of the spindle motor (4) characterized in that the spindle motor braking of the disk drive unit during power interruption and Head parking control circuit. 제6항에 있어서, 상기 스핀들모터구동제어부(6)는 스핀들모터(4)의 역기전력을 접지로 직접 바이패스하도록 구성된 것을 특징으로 하는 헤드파킹제어회로.7. The head parking control circuit according to claim 6, wherein the spindle motor drive control section (6) is configured to bypass the counter electromotive force of the spindle motor (4) directly to ground. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920001705A 1992-02-06 1992-02-06 Spindle motor & head packing control circuit for disk driver KR950000049B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920001705A KR950000049B1 (en) 1992-02-06 1992-02-06 Spindle motor & head packing control circuit for disk driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920001705A KR950000049B1 (en) 1992-02-06 1992-02-06 Spindle motor & head packing control circuit for disk driver

Publications (2)

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KR930018528A true KR930018528A (en) 1993-09-22
KR950000049B1 KR950000049B1 (en) 1995-01-07

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KR1019920001705A KR950000049B1 (en) 1992-02-06 1992-02-06 Spindle motor & head packing control circuit for disk driver

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KR950000049B1 (en) 1995-01-07

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