BD7959EFV-E2_技术文档

System Motor Driver ICs for CD / DVD / Blu-ray Drive and Recorder

System Motor Driver IC

for Half Height Drive (3 Sensors)

No.10012EAT02

BD7959EFV

●Description

BD7959EFV are ICs, developed for the spindle motor, actuator coil, tilt coil, stepping motor, SA (Spherical Aberration) motor

and the loading motor drive of the Blu-ray Drive. The spindle, stepping and SA motor driver use power MOSFET to reduce

power consumption and the actuator, tilt, and loading driver use a linear BTL drive system to reduce noise.

●Features

1) Correspondence to the Blu-ray drive control with built-in 9ch.

2) The spindle motor driver achieves low noise by ROHM's own energizing method.

3) Highly effective spindle, stepping and SA driver is achieved by PWM control driver. And the output current detection

resistance of stepping and SA driver is unnecessary by built-in internal detection circuit.

4) The actuator , tilt and loading driver achieve low noise by using linear BTL drive system.

5) ON/OFF of loading and other channels, brake mode of spindle driver and standby mode are selectable by the two

control terminals.

6) Built-in thermal-shut down circuit.

7) Built-in triangular wave generator.

8) Improved heat radiation efficiency utilizing HTSSOP package.

●Applications

Optical disk equipment, such as Blu-ray recorders

●Absolute maximum ratings

Parameter

Symbol

SPVM,SL/SAVM

Vcc,AVM

DVcc

Ratings

15

Unit

V

#1

POWER MOS power supply voltage

Preblock/BTL power block power supply voltage

PWM control block power supply voltage

Pick-up pull charge capacitor terminal voltage

Power dissipation

15

V

7

V

CHG_C

Pd

15

V

#2

2.0

W

℃

Operating temperature range

Topr

-20 ~ 75

-55 ~ 150

150

Storage temperature

Tstg

Joint part temperature

Tjmax

#1

#2

POWER MOS output terminals (35~42pin, 45 ~ 47pin) are contained.

PCB mounting (70mmX70mmX1.6mm, occupied copper foil is less than 3%, glass epoxy standard board).

Reduce by 16mW/℃ over 25℃

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2010.06 - Rev.A

1/18

Technical Note

BD7959EFV

●Recommended operating conditions

(Set the power supply voltage with consideration to power dissipation)

Ratings

Typ.

Parameter

Symbol

Unit

Min.

Max.

Spindle driver powerblock power supply voltage

Sled / SA motor driver powerblock power supply voltage

Preblock / Loading driver power supply voltage

Actuator driver power block power supply voltage

PWM control block power supply voltage

Vcc ^#3

12

SPVM

SL/SAVM

Vcc

－

V

A

－

10.8

4.3

－

13.2

5.5

AVM

5.0

DVcc

Iosp

5.0

5.5

Spindle driver output current

2.5 ^#4

0.8

1.2

Actuator, sled/SA motor, loading motor driver output current

Ioo

－

0.5

#3

#4

Set the same supply voltage to SPVM, SLVM and Vcc.

The current is guaranteed 3.0A in case of the Short-circuit braking mode and the current which is turned on/off in a duty-ratio of

less than 1/10 with a maximum on-time of 5msec.

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2010.06 - Rev.A

2/18

Technical Note

BD7959EFV

●Electrical characteristics

(Unless otherwise noted, Ta=25℃,Vcc=SL/SAVM=12V,DVcc=AVM=5V,SPRNF=0.33Ω,RL=8Ω,RLSP=2Ω,PICKCTL=3.3V)

Limits

Parameter

Symbol

Unit

Condition

MIN.

TYP.

MAX.

Circuit current

Quiescent current 1

Quiescent current 2

Quiescent current 3

Standby-on current 1

Standby-on current 2

Sled driver block

IQ1

IQ2

－

12

7

24

12

mA

Vcc (Loading OFF)

Vcc (Loading ON)

IQ3

7

12

DVcc

Vcc

IST1

IST2

－

0.5

1.0

DVcc

Input dead zone (one side)

Input output gain

VDZSL

gmSL

0

1.0

－

20

1.25

2.2

80

1.5

3.3

1.56

－

mV

A/V

Ω

RIN1,2=62kΩ

Output On resistor (top and bottom)

Output limit current

PWM frequency

RONSL

ILIMSL

fosc

IL=500mA

0.84

－

1.2

A

100

kHz

SA driver block

Input dead zone (one side)

Input output gain

VDZSA

gmSA

RONSA

ILIMSA

fosc

0

0.141

－

60

0.17

2.2

120

0.199

3.3

mV

A/V

Ω

RIN1=68kΩ, RIN2=75kΩ

Output On resistor (top and bottom)

Output limit current

PWM frequency

IL=200mA

280

－

400

100

520

－

mA

kHz

Spindle driver block

Input dead zone (one side)

Input output gain

VDZSP

gmSP

RONSP

ILIMSP

fosc

0

10

1.15

1.5

40

1.39

2.6

mV

A/V

Ω

0.91

－

SPRNF=0.33Ω

IL=500mA

Output On resistor (top and bottom)

Output limit current

PWM frequency

0.88

－

1.1

1.32

－

A

SPRNF=0.33Ω

100

kHz

Actuator driver block

Output offset voltage

Output saturation voltage

Voltage gain

VOFFT

VOFT

GVFT

-50

－

0

50

1.8

mV

V

0.9

17.5

IL=500mA

15.5

19.5

dB

Loading driver block

Output offset voltage

Output saturation voltage

Voltage gain

VOFLD

VOLD

GVLD

-50

－

0

50

2.9

mV

V

2.2

17.5

15.5

19.5

dB

CTL1,CTL2、PickCTL terminal

Input high voltage

VCTLH

VCTLL

2.0

－

3.7

0.5

V

Input low voltage

GND

Others

VC drop-muting

VMVC

VMVcc

0.4

3.4

0.7

3.8

1.0

4.2

V

Vcc drop-muting

*This product is not designed to be radiation-resistant.

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2010.06 - Rev.A

3/18

Technical Note

BD7959EFV

●Block diagram

Current

LIMIT

HU+

1

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

SPIN

HU-

HV+

BTHC

2

BOTTOM

HOLD

SPVM

FG

3

FG

HV-

4

40kΩ

HW+

HW-

SPCNF

CTL1

5

80kΩ

6

40kΩ

Vcc

7

CTL2

LDIN

LDO-

LDO+

AGND

TKO-

TKO+

TLO+

TLO-

CHG_C

FCO-

FCO+

PickCTL

ICTL

8

W

80kΩ

25kΩ

105kΩ

9

V

105kΩ

25kΩ

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

U

SPGND

SL/SAGND

SLO2-

SLO2+

SLO1-

SLO1+

SAO2-

SAO2+

SAO1-

SAO1+

N.C.(OPEN)

N.C.(pull-up to Vcc)

SLIN2

105kΩ

25kΩ

CURR.FEED

FF

105kΩ

25kΩ

105kΩ

25kΩ

FF

CURR.FEED

FF

105kΩ

25kΩ

105kΩ

25kΩ

FF

Pick-up

pull CTL

CURR.FEED

AVM

FCIN

TLIN

6kΩ

TKIN

VC

SLIN1

SL/SAVM

SAIN2

SAIN1

4.3kΩ

DVcc

DGND

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2010.06 - Rev.A

4/18

Technical Note

BD7959EFV

●Pin description

No.

1

Symbol

Description

Hall amp U positive input

Hall amp U negative input

Hall amp V positive input

Hall amp V negative input

Hall amp W positive input

Hall amp W negative input

BTL pre and Loading power supply

Loading driver input

No.

28

Symbol

SAIN1

SAIN2

Description

SA driver 1 input

SA driver 2 input

HU+

HU-

2

29

3

HV+

30 SL/SAVM Sled / SA driver pre and power supply

4

HV-

31

32

33

34

35

36

37

38

39

40

41

42

SLIN1

SLIN2

N.C.

Sled driver1 input

5

HW+

HW-

Sled driver2 input

6

N.C. (pull-up to Vcc)

7

Vcc

N.C.

N.C. (OPEN)

8

LDIN

LDO-

LDO+

AGND

TKO-

TKO+

TLO+

TLO-

SAO1+

SAO1-

SAO2+

SAO2-

SLO1+

SLO1-

SLO2+

SLO2-

SA driver1 positive output

SA driver1 negative output

SA driver2 positive output

SA driver1 negative output

Sled driver1 positive output

Sled driver1 negative output

Sled driver2 positive output

Sled driver2 negative output

9

Loading driver negative output

Loading driver positive output

BTL driver block power ground

Tracking driver negative output

Tracking driver positive output

Tilt driver positive output

10

11

12

13

14

15

16

17

18

Tilt driver negative output

Sled/SA driver block

pre and power ground

CHG_C Pick-up pull charge capacitor terminal

43 SL/SAGND

FCO-

Focus driver negative output

Focus driver positive output

44

45

46

47

48

49

50

51

52

53

54

SPGND Spindle driver power ground

FCO+

U

V

Spindle driver output U

19 Pick CTL Pick-up pull control terminal

Spindle driver output V

20

21

22

23

24

25

26

27

ICTL

AVM

FCIN

TLIN

TKIN

VC

Pick-up pull current control terminal

Actuator driver block power supply

Focus driver input

W

Spindle driver output W

Driver logic control 2 input

Driver logic control 1 input

Spindle driver feedback filter

Frequency generator output

Spindle driver power supply

CTL2

CTL1

SPCNF

FG

Tilt driver input

Tracking driver input

Reference voltage input

PWM block control power supply

Pre-ground

SPVM

BTHC

SPIN

Capacitor connection terminal

for spindle current bottom holding

DVcc

DGND

Spindle driver input

*Positive/negative of the output terminals is determined in reference to those of the input terminals.

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2010.06 - Rev.A

5/18

Technical Note

BD7959EFV

●Equivalent-circuit diagram of the terminals

Spindle Driver output

Spindle driver current detection input Spindle driver error amplifier input pin

2kΩ

52

6kΩ

7pin

200kΩ

52

53

47

46

45

1.03kΩ

5kΩ

44

Hall signal input

FG signal input

Spindle driver input

26 pin

1

3

5

2

4

6

50kΩ

26 pin

26pin

200Ω

4P

51

54

12kΩ

10kΩ

27 pin

Spindle driver feedback filter pin

PWM driver output(SLED1,2 SA1,2)

PWM driver input(SLED1,2)

30

7 pin

26 pin

10kΩ

500Ω

31

32

6kΩ

50

36 40

38 42

39 35

41 37

5kΩ

10kΩ

500Ω

5p

43

PWM driver input (SA1,2)

BTL driver output(FC,TK,TL)

BTL driver output(LD)

21

7

26 pin

4.3kΩ

28

29

13

14

18

12

15

17

10

9

6p

11

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2010.06 - Rev.A

6/18

Technical Note

BD7959EFV

BTL driver input(FC,TK,TL,LD)

Driver logic control input (CTL1,2)

7 pin

8

200

22

23

24

Ω

Pick-up pull control pin

Pick-up pull current control pin

7 pin

16

220kΩ

50kΩ

19

20

50kΩ

Reference voltage input

7pin

26pin

50kΩ

25

200Ω

68kΩ

72.3kΩ

24kΩ

26pin

(×4ch)

(×2ch)

26pin

(×2ch)

26pin

10kΩ

(×2ch)

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2010.06 - Rev.A

7/18

Technical Note

BD7959EFV

●Test circuit

VSPIN

Current

LIMIT

470p

1

HU+

2

HU-

3

HV+

4

HV-

5

54

SPIN

53

BTHC

52

SPVM

51

FG

50

SPCNF

VRNF

0.33

HU+

HV+

HW+

BOTTOM

HOLD

VCC

SP

FG

40kΩ

100k

DVCC

0.01μF

HW+

6

80kΩ

49

40kΩ

CTL1

CTL2

HW-

7

VCC

CTL1

48

CTL2

47

W

VCC

LDIN

IQVC

8

80kΩ

25kΩ

LDIN

9

46

105kΩ

LDO-

10

LDO+

V

45

U

44

105kΩ

25kΩ

11

AGND

12

TKO-

13

SPGND

43

SL/SAGND

42

SLO2-

41

SLO2+

40

SLO1-

39

SLO1+

38

105kΩ

25kΩ

CURR.FEED

FF

105kΩ

25kΩ

TKO+

14

TLO+

15

TLO-

16

25kΩ

FF

CURR.FEED

CHG_C(=VCC)

CHG_C

17

105kΩ

FCO-

18

FCO+

19

PickCTL

20

ICTL

21

AVM

FF

SAO2-

37

SAO2+

36

SAO1-

35

105kΩ

25kΩ

pickCTL

105kΩ

25kΩ

FF

Pick-up

pull CTL

ICTL(=VCC)

CURR.FEED

SAO1+

34

N.C.

AVM

FCIN

Vcc

22

FCIN

23

33

N.C.

32

6kΩ

TLIN

TKIN

SLIN2^62k

31

TLIN

VSLIN2

VSLIN1

24

TKIN

25

VC

26

DVCC

27

DGND

SLIN1^62k

30

SL/SAVM

VC

SL/SAVM

29

4.3kΩ

SAIN2^75k

28

DVCC

IQDV

VSAIN2

VSAIN1

SAIN1^68k

OUTSP

OUT

U

W

V

RLSP

47µH

V

2

Vo

SW-RL

2

RL

47µH

SW-RL

RLSP

47µH

1

2

1

SW-RL

RLSP

2

1

2-W

2-V

SW-IL

IL

2-U

1

SW-IL

IL

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2010.06 - Rev.A

8/18

Technical Note

BD7959EFV

●Functional description

1. Driver logic control terminal 1and 2 (CTL1,2)

All drivers and spindle-drive braking modes can be switched on/off by inputting combinations of H-level signal (higher

than 2V and lower than 3.7V) and L-level signal (lower than 0.5V) to these terminals.

CTL1

L

CTL2

Spindle

×

Sled

×

SA

×

○

Focus

×

Tracking

Tilt

×

○

Loading

L

×

○

×

○

×

①

H

×

②

－

H

○

○:ON ×:OFF

CTL1

CTL2

H

SPIN ＞ VC

SPIN ＜ VC

L

Forward-rotation mode

Reverse-rotation braking mode

Short-circuit braking mode

③

④

H

①

②

③

Stand-by mode

The IC is brought into stand-by mode, and its power dissipation can be limited.

Drivers muting

All output channels, except the loading, are muted and their outputs are turned off.

Reverse-rotation braking mode (spindle)

A reverse-rotation torque is applied when SPIN < VC.

Reverse-rotation is detected with SPIN input and Hall input. If the spindle detects reverse rotation

when SPIN < VC, all the output are shorted to GND.

④

Short-circuit braking mode (spindle)

All the spindle driver outputs are shorted out to GND when SPIN < VC.

2. Input/Output timing chart

HU-

HV-

HW-

Vc

》

HU+

Forward

rotation

Forward

rotation

Reverse

rotation

Forward

rotation

HV+

HW+

SPIN

SOURCE

MID

》

U

V

SINK

SOURCE

MID

SINK

SOURCE

MID

W

SINK

J K L ꢀ

G H I ꢀ

Ⅱ）Reverse

A B C D E F

Ⅰ）Forward

rotation mode

Ⅲ）Reversal

Ⅳ）Short brake

prevention

rotaion brake

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2010.06 - Rev.A

9/18

Technical Note

BD7959EFV

3. Pick-up lens pull function

Pick CTL

Function

ON

L

①

②

H

Normal (function:OFF)

①FOCUS and Tilt load are driven by the charge of the electrolytic capacitor connected with the CHG_C terminal (16pin).

The load drive current flows as follows.

FCO- (17pin) → FCO+ (18pin)

TLO- (15pin) → TLO+ (14pin)

And the load drive current and time can be adjusted with the resistor and capacitor of CHG_C (16pin) and

ICTL (20pin).

②Please turn off this function by PickCTL=H when you use a usual driver.

4. Hall input(1 ~ 6pin）

The hall element can use both a series connection and a parallel connection.

However, please set the hall input voltage with 1.5-3.8V and 75mVpp or more (one side).

DVCC

HU

HV

HU

HV

HW

＜Parallel connection. ＞＜Series connection＞

5. Torque command/ output current detection terminals

The relation between the torque command input and the output current detection terminals input is expressed in the

figure below:

SPRNF

Forward rotation

Input dead zone +

Input dead zone -

SPIN

VC

The input-output gain (gm) and the otuput-limit current (ILIM) depend on SPRNF (output current detection resistor).

6. PWM oscillation frequency

The PWM oscillation for driving the spindle, sled and SA is free running. The oscillating frequency is 100kHz(typ.)

7. Muting function

7-1) VC-drop muting

When the voltage at VC terminal drops to a value lower than 0.7V(Typ.), the outputs of all the channels are turned

off. Set the VC terminal voltage higher than 1.0V.

7-2) Vcc-drop muting

When the voltage at DVcc terminal and Vcc terminal drops to a value lower than 3.8V(Typ.), the outputs of all the

channels are turned off.

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2010.06 - Rev.A

10/18

Technical Note

BD7959EFV

8. Thermal-shut down

Thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the IC from thermal breakdown.

Please use the IC according to the thermal loss allowed in the package. In case the IC is left running over the allowed

loss, the junction temperature rises, and the thermal-shutdown circuit works at a junction temperature of 175℃(Typ.)

(All other channel outputs are turned off).

When the junction temperature drops to 150℃ (Typ.) the IC resumes operation.

9. Protect system1

The actuator protect system disables all output that exceeds 130ms (Typ.) at maximum power.

*It is possible to reset the protect system by CTL1,2=Low (Stand-by) in the protect operates.

10. Protection function 2

Function to protect against destruction of output terminal (Focus, Tracking, Tilt, and Loading) when output pin connects

to GND or Vcc.

①When SINK side POWER transistor has been turned on, if the output current (400mA<Typ> or more) and

the output voltage (Vcc-1VF or more) are detected, the channel concerned will be turned off.

②When SOURCE side POWER transistor has been turned on, if the output current (1.6A<Typ> or more) are detected,

the channel concerned will be turned off.

*It is possible to reset the protect system by CTL1,2=Low (Stand-by) in the protect operates.

11. 33pin, 34pin

Please 33pin is a pull-up in Vcc and use, though it is N.C.

Please make to open and use 34pin.

●External parts description

1). Filtering capacitor

It is recommended to connect 0.01µF filtering capacitor to SPCNF terminal. This capacitor filters PWM output carrier

frequency. Dispersion of the cut off frequency due to circuit board wiring layout is taken into consideration. If it is difficult

to filter at the recommended value due to circuit board wiring led round, the capacity can be increased. In this case, note

that the output transmission delay time may be longer.

2). Bypass capacitor

Please connect a bypass capacitor (0.1µF) across the supply voltage lines close to the IC pins.

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2010.06 - Rev.A

11/18

Technical Note

BD7959EFV

●Notes for use

1. Absolute maximum ratings

We are careful enough for quality control about this IC. So, there is no problem under normal operation, excluding that it

exceeds the absolute maximum ratings. However, this IC might be destroyed when the absolute maximum ratings, such

as impressed voltages (Vcc, VM) or the operating temperature range(Topr), is exceeded, and whether the destruction is

short circuit mode or open circuit mode cannot be specified. Please take into consideration the physical countermeasures

for safety, such as fusing, if a particular mode that exceeds the absolute maximum rating is assumed.

2. Reverse polarity connection of the power supply

Connecting the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply

lines. An external direction diode can be added.

3. Power supply line

Design PCB layout pattern to provide low impedance GND and supply lines. To obtain a low noise ground and supply line,

separate the ground section and supply lines of the digital and analog blocks. Furthermore, for all power supply terminals

to ICs, connect a capacitor between the power supply and the GND terminal. When applying electrolytic capacitors in the

circuit, note that capacitance characteristic values are reduced at low temperatures.

4. GND voltage

Ground-GND potential should maintain are the minimum ground voltage level. Furthermore, no terminals should be lower

than the GND potential voltage including an electric transients.

5. Thermal design

Do not exceed the power dissipation (Pd) of the package specification rating under actual operation, and please design

enough temperature margins.

6. Inner-pin shorts and mounting errors

Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any

connection error or if positive and ground power supply terminals are reserved. The IC may also be damaged if pins are

should together or are shorted to other circuits power lines.

7. Operation in a strong electromagnetic field

Use caution when using the IC in the presence of a strong electromagnetic field as doing so many cause the IC to

malfunction.

8. ASO(Area of Safety Operation.)

Do not exceed the maximum ASO and the absolute maximum ratings of the output driver.

9. TSD(Thermal shut-down)

The TSD is activated when the junction temperature (Tj) reaches 175℃(with +/-25℃ hysteresis), and the output terminal

is switched to Hi-z. The TSD circuit aims to intercept IC from high temperature. The guarantee and protection of IC are not

purpose. Therefore, don't use this IC after TSD circuit operates, or don't use it for assumption that operates the TSD

circuit.

10.Capacitor between the output and GND

If a large capacitor is connected between the output and GND, this IC might be destroyed when Vcc becomes 0V or GND,

because the electric charge accumulated in the capacitor flows to the output. Please set said capacitor to smaller than

0.1µF.

11. The capacitor between SPVM (52pin) and GND

The capacitor between SPVM (52pin) and GND absorbs a sudden charge in the voltage and the current on account of

PWM drive, and suppresses disorder of Vcc voltage. However if a capacitor becomes far from IC, the effect will fall under

the influence of wiring impedance etc. Please arrange the capacitor between SPVM (52pin) and GND near the IC.

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2010.06 - Rev.A

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Technical Note

BD7959EFV

12.Wiring for SPRNF

Considering the wiring resistance, connect each detecting resistor as close as possible to the current detection terminals

for the spindle drive SPRNF.

12V

This range of wiring is considered as detection resistor.

Please wire as wide and short as possible.

Close to IC

SPVM

52

SPRNF

+

7

Vcc

13.Earth wiring pattern

Use separate ground lines for control signals and high current power driver outputs. Because these high current output

that flow to the wire impedance change the GND voltage for control signal. Therefore, each ground terminal of IC must be

connected at the one point on the set circuit board. As for GND of external parts, it is similar to the above-mentioned.

14.Each input terminal

This IC is a monolithic IC, and has P⁺isolation and P substrate for the element separation. Therefore, a parasitic PN

junction is firmed in this P-layer and N-layer of each element. For instance, the resistor or the transistor is connected to the

terminal as shown in the figure below. When the GND voltage potential is greater than the voltage potential at Terminals A

or B, the PN junction operates as a parasitic diode. In addition, the parasitic NPN transistor is formed in said parasitic

diode and the N layer of surrounding elements close to said parasitic diode. These parasitic elements are formed in the IC

because of the voltage relation. The parasitic element operating causes the wrong operation and destruction. Therefore,

please be careful so as not to operate the parasitic elements by impressing to input terminals lower voltage than GND(P

substrate). Please do not apply the voltage to the input terminal when the power-supply voltage is not impressed.

Moreover, please impress each input terminal lower than the power-supply voltage or equal to the specified range in the

guaranteed voltage when the power-supply voltage is impressing.

Resistor

Transistor(NPN)

E

Terminal-A

Terminal-B

C

B

Terminal-A

C

E

B

Parasitic

element

P⁺

P

P⁺

P

P⁺

Surrounding

elements

Parasitic

element

P-Substrate

GND

Parasitic

element

Parasitic

element

GND

Simplified structure of IC

15.Inspection by the set circuit board

The stress might hang to IC by connecting the capacitor to the terminal with low impedance. Then, please discharge

electricity in each and all process. Moreover, in the inspection process, please turn off the power before mounting the IC,

and turn on after mounting the IC. In addition, please take into consideration the countermeasures for electrostatic

damage, such as giving the earth in assembly process, transportation or preservation.

16.Belly metal

Belly metal pattern is attached to the GND on the inside of the package. Make sure to the external GND.

www.rohm.com

2010.06 - Rev.A

13/18

Technical Note

BD7959EFV

●Application circuit

Current

LIMIT

HU+

HU-

SPIN

BTHC

SPVM

FG

1

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

SPIN

470p

HALL1

HALL2

2

BOTTOM

HOLD

0.33Ω

HV+

3

12V

HV-

0.1µF

4

FG

40kΩ

100k

SPCNF

HW+

HW-

5

0.01µF

HALL3

80kΩ

CTL1

CTL2

W

80kΩ

6

DVCC

12V

40kΩ

Vcc

7

CTL2

LDIN

LDO-

LDO+

AGND

TKO-

TKO+

TLO+

TLO-

CHG_C

FCO-

FCO+

PickCTL

ICTL

LDIN

8

80kΩ

25kΩ

SP

motor

V

9

105kΩ

U

105kΩ

25kΩ

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

SPGND

105kΩ

25kΩ

SL/SAGND

SLO2-

Tracking coil

Tilt coil

CURR.FEED

FF

105kΩ

25kΩ

SLO2+

SLO1-

105kΩ

25kΩ

STM

FF

SLO1+

12V

CURR.FEED

SAO2-

Focus coil

PickCTL

FF

105kΩ

25kΩ

SAO2+

SAO1-

105kΩ

25kΩ

FF

SAO1+

N.C.(OPEN)

Pick-up

12V

CURR.FEED

AVM

pull CTL

5V

N.C. (pull-up to Vcc)

12V

FCIN

TLIN

FCIN

TLIN

6kΩ

SLIN2

62k

TKIN

VC

SLIN1

TKIN

VC (1.65V)

5V

SL/SAVM

SAIN2

12V

4.3kΩ

DVcc

DGND

SAIN2

SAIN1

75k

SAIN1

68k

www.rohm.com

2010.06 - Rev.A

14/18

Technical Note

BD7959EFV

●Connecting wires of application board

www.rohm.com

2010.06 - Rev.A

15/18

Technical Note

BD7959EFV

●Pattern drawing of application board

Silk screen on the surface

Wiring pattern on the surface

Silk screen on the back

Wiring pattern on the back

www.rohm.com

2010.06 - Rev.A

16/18

Technical Note

BD7959EFV

●Electrical characteristic curves

6

4

6

4

6

4

2

0

-2

-4

-6

-2

-4

-6

-2

-4

-6

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

INPUT VOLTAGE [V]

Fig.1 Focus driver I/O characteristic

Fig.2 Tracking driver I/O characteristic Fig.3 Tilt driver I/O characteristic

(Ta=27℃,R_L=8Ω+47µH) (Ta=27℃,R_L=8Ω+47µH)

(Ta=27℃,R_L=8Ω+47µH)

350

300

250

200

150

100

50

12

8

1400

1200

1000

800

600

400

200

0

4

0

-4

-8

-12

0

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

2.0

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

INPUT VOLTAGE [V]

Fig.4 Loading driver I/O characteristic Fig.5 Sled driver I/O characteristic

(Ta=27℃,R_L=12Ω+47µH) (Ta=27℃,R_L=8Ω+47µH)

Fig.6 SA driver I/O characteristic

(Ta=27℃,R_L=8Ω+47µH)

480

400

320

240

160

80

0

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

2.0

INPUT VOLTAGE [V]

Fig.7 Spindle driver I/O characteristic

(Ta=27℃,R_L=2Ω+47µH)

●Power dissipation reduction

2.0

1.0

0

25

50

75

100

125

150

AMBIENT TEMPERATURE : Ta (℃)

*70mm×70mm, t=1.6mm, occupied copper foil is less than 3%, glass epoxy mounting.

www.rohm.com

2010.06 - Rev.A

17/18

Technical Note

BD7959EFV

●Ordering part number

B D

7

9

5

9

E

F

V - E

2

Part No.

Package

EFV: HTSSOP-B54

Packaging and forming specification

E2: Embossed tape and reel

HTSSOP-B54

18.5 0.1

(MAX 18.85 include BURR)

Tape

Embossed carrier tape (with dry pack)

(6.0)

+

−

6°

4°

Quantity

1500pcs

4°

54

28

E2

Direction

of feed

The direction is the 1pin of product is at the upper left when you hold

reel on the left hand and you pull out the tape on the right hand

(

)

1

27

1PIN MARK

+0.05

0.8

0.17

-

0.03

S

0.08 S

0.65

+0.05

Direction of feed

1pin

0.22

M

-

0.04

0.08

Reel

Order quantity needs to be multiple of the minimum quantity.

(Unit : mm)

∗

www.rohm.com

2010.06 - Rev.A

18/18

Notice

N o t e s

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content speciﬁed herein is subject to change for improvement without notice.

The content speciﬁed herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the speciﬁcations,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information speciﬁed in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information speciﬁed herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products speciﬁed in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, ofﬁce-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products speciﬁed in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, ﬁre or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, ﬁre control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

may result in a direct threat to human life or create a risk of human injury (such as a medical

instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-

controller or other safety device). ROHM shall bear no responsibility in any way for use of any

of the Products for the above special purposes. If a Product is intended to be used for any

such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology speciﬁed herein that may

be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to

obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

www.rohm.com

R1010

A


型号：	BD7959EFV-E2
厂家：	ROHM
描述：	System Motor Driver IC for Half Height Drive (3 Sensors) 系统电机驱动器IC，适用于半高磁带机（ 3传感器）驱动器驱动电子器件驱动程序和接口传感器接口集成电路光电二极管电机 CD
文件：	总19页 (文件大小：1139K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD7959EFV-E2 [ROHM]

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