LV8206T [SANYO]
CD and MD System Motor Driver; CD和MD系统电机驱动器
| 型号： | LV8206T |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | CD and MD System Motor Driver |
| 文件： | 总14页 (文件大小：297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENN7189
Bi-CMOS LSI
CD and MD System Motor Driver
LV8206T
Overview
Package Dimensions
unit: mm
The LV8206T is a motor driver system IC that integrates all
the motor driver circuits required to implement CD and MD
players. Since the LV8206T includes a 3-phase PWM
spindle motor driver, a sled driver (3-phase stepping motor
driver), and two PWM H-bridge motor driver circuits for
the focus and tracking motors, it can contribute to
miniaturization, thinner form factors, and lower power
consumption in end products.
3254-TQFP48
[LV8206T]
Direct PWM sensorless drive is adopted in the spindle and
sled drivers for high-efficiency motor drive with a minimal
number of external components.
Features
•
Direct PWM drive (low side control)
•
Three-phase full-wave sensorless drive (spindle block)
•
Reverse torque braking (spindle block)
•
Soft switching drive (spindle block)
•
MOS output transistors structure
SANYO: TQFP48
•
Standby mode power saving functions
•
FG output
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
N2206 / N2503TN (OT) No. 7189 - 1/14
LV8206T
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
VCC max
Vs max
Conditions
Ratings
Unit
V
Maximum supply voltage
Output block supply voltage
5.0
4.5
V
Pre-drive voltage
(Gate-voltage)
VG max
6.5
V
Output current
Io max
1.0
0.4
A
Allowable power dissipation 1
Pd max1
Independent IC
W
* Specified circuit board: 114.3 × 76.1 × 1.6 mm3
Circuit board material: Glass epoxy
Allowable power dissipation 2
Pd max2
1.3
W
Operating temperature
Storage temperature
Topr
Tstg
–20 to +85
°C
°C
–55 to +150
Recommended Operating Conditions at Ta = 25°C
Parameter
Supply voltage
Symbol
VCC
Conditions
Ratings
Unit
V
1.9 to 4.0
Output block supply voltage
VS
0 to VG – 3.0
V
Pre-drive voltage
(Gate-voltage)
VG
VS + 3 to VS + 6.3
V
Electrical Characteristics at Ta = 25°C, VCC = 2.4 V
Ratings
Parameter
Symbol
Conditions
Unit
min
5.5
typ
2.1
max
3.1
20
Power supply current 1
Power supply current 2
[Charge Pump Output]
Output voltage
ICC
1
2
S/S: H
mA
µA
ICC
S/S: L (Stand by)
VG
6.0
6.3
V
Actuator Block at Ta = 25°C, VCC = 2.4 V
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
[Position Detection Comparator]
Input offset voltage
VAOFS
VACM
–9
0
+9
mV
V
Common phase input voltage
range
VCC
High-level output voltage
Low-level output voltage
[Actuator Input Pin]
High-level input voltage range
Low-level input voltage range
[Output Block]
VACH
VACL
IO = –0.5 mA
IO = 0.5 mA
VCC – 0.5
VCC
0.5
V
V
VIH
VIL
VCC – 0.5
0
VCC
0.5
V
V
Output ON resistans
Output delay time
Ron1, 2, 3 IO = 0.5 A, the sum of lower and upper outputs
0.8
0.1
0.1
1.2
1.0
0.7
Ω
TRISE
TFALL
Design target*
µs
µs
(H bridge)
Design target*
Minimum Input Pulse Width
(H bridge)
Ch1, ch2 output pulse width ≥ 2/3 tmin
Design target*
tmin
200
ns
[Mute Pin]
High-level input voltage range
Low-level input voltage range
VMUH
VMUL
Mute OFF
Mute ON
VCC – 0.5
0
VCC
0.5
V
V
*: Since these values are design targets, they are not measured.
No. 7189 - 2/14
LV8206T
Spindle motor driver block at Ta = 25°C, VCC = 2.4 V
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
[Output Block]
Source1
Ron (H1)
Ron (H2)
Ron (L)
IO = 0.5 A, VS = 1.2 V, VG = 6 V, forward TR
IO = 0.5 A, VS = 1.2 V, VG = 6 V, reverse TR
IO = 0.5 A, VS = 1.2 V, VG = 6 V
0.4
0.4
0.4
0.8
0.6
0.6
0.6
1.2
Ω
Ω
Ω
Ω
Source2
Sink
Source + Sink
[Position Detection Comparator]
Input offset voltage
[VCO Pin]
Ron (H+L)
IO = 0.5 A, VS = 1.2 V, VG = 6 V
VSOFS
Design target*
–9
+9
mV
VCO high-level voltage
VCO low-level voltage
[S/S Pin]
VCOH
VCOL
0.6
0.3
0.8
0.5
1.0
0.7
V
V
High-level input voltage range VSSH
Low-level input voltage range VSSL
[Current Limiter]
Start
Stop
VCC – 0.5
0
VCC
0.5
V
V
Limiter voltage
[Break Pin]
VRF
0.18
0.2
0.22
V
High-level input voltage range VBRH
Low-level input voltage range VBRL
[PWM Pin]
Brake OFF
Brake ON
VCC – 0.5
0
VCC
0.5
V
V
High-level input voltage range VPWMH
Low-level input voltage range VPWML
VCC – 0.5
0
VCC
0.5
V
V
PWM input frequency
[CLK Pin ]
VPWMIN
190
kHz
High-level input voltage range VCLKH
Low-level input voltage range VCLKL
[FG Output Pin]
VCC – 0.5
0
VCC
0.5
V
V
High-level output voltage
Low-level output voltage
VFGH
VFGL
IO = –0.5 mA
IO = 0.5 mA
VCC – 0.5
VCC
0.5
V
V
*: Since these values are design targets, they are not measured.
Actuator Control Truth Table
Focus and Tracking Blocks
MUTE
IN1 , 2F
IN1, 2R
OUT1, 2F
OUT1, 2R
H
H
H
H
L
L
H
L
L
L
L
H
L
L
L
H
H
×
H
L
H
×
L
Z
Z
Z: Open
Sled Motor Stepping Block
MUTE
S1
L
S2
L
S3
L
SUO
H
H
Z
SVO
L
SWO
H
H
H
H
H
H
H
H
L
Z
L
H
L
L
L
Z
H
H
L
L
H
H
Z
L
H
L
L
L
Z
H
H
Z
Z
Z
H
H
H
H
×
L
H
L
L
Z
L
H
H
×
Z
Z
H
×
Z
Z
Z
Z
Z: Open
No. 7189 - 3/14
LV8206T
Pin Assignments
47
46
43
48
45
44
42
41
40
39
38
37
IN2R
IN1F
1
2
36
35
34
33
32
31
IN1R
RMAX
CP1
CPC1
CP2
CPC2
VG
VCO
VCOIN
COMIN
FIL
3
4
5
6
GND
LV8206T
7
PWM 30
S1 29
V
CC
8
CLK
S2
9
28
MODE
VS3
10
11
S3 27
26
25
VS
RF
BRK
12 PGND3
SUCO
13
FG
24
14
15
16
17
18
19
20
21
22
23
Top view
No. 7189 - 4/14
LV8206T
Test Circuit Diagram
VS
VS
DSP
DSP
48
IN1F
47
46
45
44
43
42
41
40
39
38
37
IN2R
DSP
1
2
36
35
34
33
IN1R
RMAX
CP1
CPC1
CP2
VCO
VCOIN
COMIN
3
4
5
FIL 32
31
CPC2
VG
6
GND
PWM 30
LV8206T
V
7
V
CC
CC
S1
S2
S3
VS
RF
8
29
28
27
26
25
CLK
DSP
DSP
9
MODE
VS3
VS
10
11
DSP
VS
BRK
12 PGND3
SUCO
13
FG
24
19
20
21
22
23
14
15
16
17
18
Sled motor
Spindle
motor
DSP
DSP
DSP
Top view
Insert capacitors between VS and ground and between VCC and ground.
No. 7189 - 5/14
LV8206T
Pin Functions
Pin No.
Pin Name
Function
1
2
3
4
5
6
7
8
IN1R
CP1
H-bridge 1 logic system reverse input
Charge pump stepped-up voltage pulse output. Insert a capacitor between this pin and CPC1 (pin 3).
Charge pump stepped-up voltage connection. Insert a capacitor between this pin and CP1 (pin 2)
Charge pump stepped-up voltage pulse output. Insert a capacitor between this pin and CPC2 (pin 5).
Charge pump stepped-up voltage connection. Insert a capacitor between this pin and CP2 (pin 4)
Charge pump stepped-up voltage output. Insert a capacitor between this pin and ground.
CPC1
CP2
CPC2
VG
V
Small signal system power supply. Insert a capacitor between this pin and ground.
CC
CLK
Logic system reference clock input. Input a signal with a frequency either 32 or 64 times that of the spindle PWN frequency.
PWM frequency switching input. Set this pin high if the frequency input to the CLK pin (pin 8) is 32 times the spindle PWM
frequency, and set this pin low if the input frequency is 64 times the spindle PWM frequency.
9
MODE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VS3
BRK
Three-phase sled drive power supply. Insert a capacitor between this pin and ground.
Spindle motor block brake control. Reverse torque braking is applied when this pin is low.
Sled output block ground
PGND3
SUCO
SUO
Sled driver block position detection comparator output
Three-phase sled driver U phase output
SVO
Three-phase sled driver V phase output
SVCO
SWCO
SWO
SCOM
WOUT
VOUT
COM
Sled driver block position detection comparator output
Sled driver block position detection comparator output
Three-phase sled driver W phase output
Sled driver block position detection comparator common input
Three-phase spindle driver W phase output. Connect the corresponding motor coil to this pin.
Three-phase spindle driver V phase output. Connect the corresponding motor coil to this pin.
Spindle motor common point connection
UOUT
FG
Three-phase spindle driver U phase output. Connect the corresponding motor coil to this pin.
FG pulse output (MOS output). This pin outputs a pulse signal equivalent to that output when three Hall-effect sensors are used.
Output current detection pin. The drive current is detected using the low resistance resistor inserted between this pin and ground.
Connect this pin to ground if the spindle block current limiter function will not be used.
Spindle motor drive power supply. Insert a capacitor between this pin and ground.
25
RF
26
27
28
29
30
31
32
33
VS
S3
Logic inputs for the 3-phase sled block. The outputs are pins 14, 15, and 18.
S2
S1
PWM
GND
FIL
PWM signal input. The output transistors are turned on when the input is set high.
Small signal system ground
Spindle motor position detection comparator filter. Insert a capacitor between this pin and COMIN (pin 33).
Spindle motor position detection comparator filter. Insert a capacitor between this pin and FIL (pin 32).
VCO control voltage input. Insert a capacitor and a resistor with a high resistance in parallel between this pin and ground.
COMIN
34
VCOIN
A control output proportional to the motor speed is generated in the logic block, and that output charges and discharges the
capacitor inserted between this pin and ground. The VCO frequency is controlled by the voltage on this pin.
VCO connection. Insert a capacitor between this pin and ground.
The VCO frequency follows the motor speed as indicated by the VCOIN pin voltage.
VCO maximum frequency setting. When the value of the connected resistor is reduced, the VCO frequency rises.
H-bridge 2 logic system reverse input
35
VCO
36
37
38
RMAX
IN2R
IN2F
H-bridge 2 logic system forward input
High bridge 1, 2, and three-phase sled mute pin.
39
MUTE
When a low level is applied to this pin, the output pins for the above mentioned drivers are set to the high-impedance state.
H-bridge 2 motor power supply. Insert a capacitor between this pin and ground.
H-bridge 2 forward output
40
41
42
43
44
45
46
47
48
VS2
OUT2F
OUT2R
PGND1
OUT1R
OUT1F
VS1
H-bridge 2 reverse output
H-bridge 1 and 2 output block ground
H-bridge 1 reverse output
H-bridge 1 forward output
H-bridge motor power supply. Insert a capacitor between this pin and ground.
Spindle motor block start/stop pin. A high-level input: Start
H-bridge 1 logic system forward input
S/S
IN1F
No. 7189 - 6/14
LV8206T
Pin Functions
Pin No.
Pin Name
Pin description
Equivalent circuit
48, 1
IN1±
IN2±
Logic input pin of the actuator high bridge block
Input clock pin of the motor drive system
38, 37
8
9
CLK
PWM frequency switching pin of Spindle block.
Input frequency relations with the CLK (pin 8) and PWM (pin 30)
are as follows
.
MODE
When set high: fPWM=fCLK/32
When set low: fPWM=fCLK/64
V
CC
10kΩ
Brake pin of spindle motor block.
High-level input: Forward torque
Low-level input: Brake
11
BRK
29
28
27
S1
S2
S3
Three-phase sled logic input pin
PWM signal input pin of the spindle block.
30
39
47
PWM
MUTE
S/S
The output TR turns it on by a high level input on this pin.
High bridge and three-phase sled mute pin
Low-level input: Mute
Spindle motor block start/stop pin.
High-level input: Start
Charge pump pulse output pin.
4
2
A capacitor must be connected between this pin and CPC1
(pin 3).
V
CC
2
4
CP1
This pin must be held open when used as voltage doubler.
Charge pump pulse output pin.
CP2
A capacitor must be connected between this pin and CPC2
(pin 5).
Pin for charge pump.
CPC1
3
5
6
7
A capacitor must be connected between this pin and CP1
(pin 2).
3
5
V
CC
Pin for charge pump.
6
CPC2
VG
A capacitor must be connected between this pin and CP2
(pin 4).
Pin for charge pump.
A capacitor must be connected between this pin and GND
Power supply pin to supply to the small signal system circuit
A capacitor must be connected between this pin and GND
VCC
Continued on next page.
No. 7189 - 7/14
LV8206T
Continued from preceding page.
Pin No.
10
Pin Name
VS3
Pin description
Equivalent circuit
Power supply pin for sled motor driver.
10
A capacitor must be connected between this pin and GND.
Sled driver outputs. Connect these pins to the sled motor coils.
14
15
18
SUO
SVO
SWO
14
15
18
12
12
PGND3
Sled output block ground
13
17
18
SUCO
SVCO
SWCO
V
CC
Sled driver block position detection comparator outputs
FG pulse output pin.
24
FG
The pulse of three hall sensor is outputted.
VG
1kΩ
19
SCOM
Three-phase sled motor common point connection
19
Power spply for spindle motor driver.
26
26
VS
A capacitor must be connected between this pin and GND.
23
21
20
UOUT
VOUT
WOUT
20
21
23
Output pin.
Connect the spindle motor coil.
25
V
CC
Output current detection pin.
25
RF
Drive current is detected when a resistor with a small value is
connected between this pin and GND.
Spindle motor common point connection
connect to COM
22
32
COM
FIL
VG
Waveform synthesis signal filter pin.
A capacitor is connected between this pin and COMIN (pin 33).
600Ω
600Ω
22
33
32
Differential input pin of Position detection comparator.
33
COMIN
A capacitor must be connected between this pin and FIL
(pin 32).
6kΩ
Continued on next page.
No. 7189 - 8/14
LV8206T
Continued from preceding page.
Pin No.
31
Pin Name
GND
Pin description
GND pin of small signal system
Equivalent circuit
V
CC
34
Pin to control the voltage of VCO pin.
34
VCOIN
A capacitor must be connected between this pin and GND.
V
CC
Oscillation frequency of VCO pin.
A capacitor must be connected between this pin and GND.
35
35
VCO
500Ω
The VCO oscillation frequency changes in correspondence to
the spindle motor rotation speed.
V
CC
Sets the maximum frequency of VCO pin.
36
RMAX
With the resistance of a resistor connected to GND reduced, the
higher frequency can be set.
36
40
46
46, 40
45, 44
41, 42
43
VS1/VS2
OUT1F/R
OUT2F/R
PGND1
H bridge block outputs
41
42
45
44
Insert capacitors between VS1 (pin 46) and ground and between
VS2 (pin 40) and ground.
43
No. 7189 - 9/14
LV8206T
Functional Description and External Components
The LV8206T is a system motor driver IC that implements all the motor driver circuits required by CD and MD players in
just a single IC. Since the LV8206T includes sled, focus, and tracking drivers (as H-bridge driver), it can contribute to
thinner form factors in end products. Furthermore, the spindle motor driver uses a direct PWM sensorless drive method that
minimizes the number of external components and provides highly efficient motor drive.
This document presents information necessary to design systems with the best possible characteristics and should be read
before designing driver circuits using the LV8206T.
yOutput Drive Circuits and Speed Control Methods
The LV8206T adopts a synchronous commutation direct PWM drive method to minimize power loss in the output. Low
on-resistance DMOS devices are used as the output transistors. (The upper and lower side output block device
on-resistances: 0.8 Ω (typical))
The spindle driver speed control system uses two signals supplied from an external DSP: the PWM and BRK signals. The
PWM signal is created by the sink side transistor, and speed is controlled by switching proportional to the duty of the
signal input to the PWM pin (pin 30). (The sink side transistor is on when the PWM input is high, and off when the PWM
input is low.)
This IC performs variable-duty soft switching for quieter motor operation.
yCurrent Limiter Circuit
The current limiter circuit limit current is determined according to I = VRF/Rf. (VRF = 0.20 V, typical) The current
limiter is activated by the peak current at the RF pin (pin 25), and turns the sink transistor off. Applications that do not use
the current limiter should connect the RF pin to the power system ground.
yNotes on VCO Circuit Constant Determination
The LV8206T spindle block adopts a sensorless drive method. In sensorless drive, the IC detects the back EMF signal
generated by the motor and uses that to determine the timing with which it applies power to the motor. For this reason, it
uses a VCO signal to control the timing and other aspects. We recommend the following procedure to determine the VCO
circuit external component values.
— Build a test system using components with temporary values.
Connect a 2.2 µF capacitor and a 4.7 MΩ resister in parallel between the VCOIN pin (pin 34) and ground, a 68KΩ
resistor between the RMAX pin (pin 36) and ground, and a 3300 pF capacitor between the VCO pin (pin 35) and
ground.
— Determine the optimal capacitance of the VCO pin (pin 35) capacitor.
Select a value that gives the shortest startup time (the time until the target speed is reached) and furthermore gives the
minimum variation in the startup time. If the capacitance is too large, the variation in the startup time will be excessive,
and the value too small, idling may occur. Since the optimal value of the VCO pin capacitor will vary with the motor
characteristics and startup current, the value of this capacitor must be verified if the type of motor used is changed or
if the specifications change.
— Determine the optimal resistance of the RMAX pin (pin 36) resistor.
With the motor running at the maximum operating speed, select a resistance that brings the VCOIN pin voltage to
about VCC - 1.0 (V) (or lower). If the resistance is too large, the VCOIN pin voltage may rise.
— Determine the optimal capacitance of the VCOIN pin (pin 34) capacitor.
With the motor running at the minimum operating speed, increase the value of the VCOIN capacitor if the FG output
(pin 24) pulse signal is unstable.
— Determine the value of the resistor inserted between VCOIN (pin 34) and ground.
The LV8206T generates a VCO control voltage, which is proportional to the spindle motor speed at the VCOIN pin.
In an application that implements intermittent drive using the S/S pin (and/or the MUTE pin) to save power, the
VCOIN pin potential will be retained in the power saving states due to the charge stored on the capacitor. This means
that a voltage discharge resistor with a large value (a few MΩ) is required for the VCOIN pin. Choose a time constant
that makes the discharge time longer than the motor free-running deceleration time. Note that when determining this
time constant, the discharge characteristics may be changed by an oscilloscope probe connected to the VCOIN pin,
and that this may cause problems when testing prototypes. (We recommend using an FET probe.) This discharge
capacitor is not required if intermittent drive (free-running deceleration) is not used.
No. 7189 - 10/14
LV8206T
yS/S and Mute Circuits
The S/S pin (pin 47) is the spindle driver start/stop pin; a high level selects the start state. The MUTE pin (pin 39) applies
to the driver circuits other than the spindle block; a low level selects the muted state. In the muted state, the corresponding
drivers (the H-bridge and 3-phase sled drivers) all go to the high-impedance state, regardless of the input logic. Since the
S/S pin and the MUTE pin operate independently, both the S/S pin and the MUTE pin must be set to the low level to put
the IC in full standby state (power saving mode).
yBRK Circuit
The BRK pin (pin 11) functions to reverse the direction of the spindle driver torque; a low level selects reverse torque
breaking. When the motor speed becomes adequately slow by reverse torque breaking, the IC switches to the short-circuit
braking state and stops the motor. (Note: The IC must not be in the power saving state at this point.)
When using the BRK pin function to stop the motor, if the timing of the switch to short-circuit braking is too early,
excessive motor rotation remains, and problems occur, the value of the RMAX pin (pin 36) resistor must be reduced. Also,
if motor oscillation continues when the motor is nearly stopped, and the IC does not switch to short braking mode, insert
a resistor with a value of a few kΩ at the COM pin. (Note: Verify that inserting this resistor does not adversely affect the
startup characteristics.)
yThe CLK and PWM Signals
The LV8206T CLK pin (pin 8) signal is used as the sensorless logic reference clock, for voltage step-up pulses, and for
other purposes. Therefore, it must be provided at all times the IC is in the start state. The CLK input signal must be either
32 or 64 times the frequency of the PWM input signal. The MODE pin (pin 9) selects the relationship between the CLK
and PWM pin frequencies; a low level on the MODE pin (pin 9) selects 64× input, a high level on the MODE pin (pin 9)
selects 32× input. We recommend that the CLK input frequency be less than 6 MHz.
yFG Output Circuit
The FG pin (pin 24) is the spindle block FG output pin. It provides a pulse signal equivalent to that provided by systems
that use three Hall-effect sensors. This output has a MOS circuit structure.
ySpindle Block Position Sensor Comparator Circuit
The spindle block position sensor comparator circuit uses the back EMF generated by motor rotation to detect the rotor
position. The output block power application timing is determined based on the position information acquired by this
circuit. Startup problems due to noise on the comparator inputs can be ameliorated by inserting a capacitor (1000 to
4700 pF) between the COMIN pin (pin 33) and the FIL pin (pin 32). Note that if the value of this capacitor is too large, the
output current application timing may be delayed at higher motor speeds and efficiency may be degraded.
yCharge Pump Circuit
Since the LV8206T has a DMOS (n-channel) output structure, it includes a charge pump based voltage step-up circuit. A
voltage multiplied by a factor of three (or a voltage of about 6.0 V) can be acquired by connecting capacitors between the
CP1 and CPC1 pins and between the CP2 and CPC2 pins. It is desirable that this IC be used with the voltage relationship
between the stepped-up voltage (VG) and the motor supply voltage (VS) meeting the condition VG – VS ≥ 3.0 V. Note
that the IC is designed so that the stepped up voltage (VG) is clamped at about 6.0 VDC. If the stepped-up voltage (VG)
exceeds 6.5 V (VGmax) due to ripple or other cause, the value of the VG pin capacitor must be increased.
Observe the following points if the VG voltage is supplied externally.
— The externally applied VG voltage must not exceed VGmax in the Absolute Maximum Ratings.
— The capacitor between the CP1 and CPC1 pins (pins 2 and 3), and the capacitor between the CP2 and CPC2 pins (pins
4 and 5) are not required.
— The sequence in which the VG voltage is applied requires care. The VG voltage must be applied after VCC, and must
be removed before VCC is cut off.
— Since there is an internal diode between the VCC and VG pins in the IC, a voltage such that VCC > VG must never be
applied to the VG pin.
No. 7189 - 11/14
LV8206T
yThree-Phase Sled Driver
This driver is designed for sled motor drive. The SUC0 to SWC0 pins (pins 13, 16, and 17) are the sled driver position
detection comparator output pins, and are MOS outputs. These pins are used to feed back the sled motor speed
information (position information) to the DSP or microcontroller. The S1 to S3 pins (pins 29, 28, and 27, respectively) are
the sled driver logic inputs, and are connected to the DSP. These pins have built-in pull-up resistors.
yActuator Block
The LV8206T provides two H-bridge driver channels as actuator drivers for the focus and tracking systems. The logic
input pins have built-in pull-down resistors. PWM is used for actuator control, and synchronous commutation is
supported.
The figures below present reference data related to the dead band during control.
Actuator Infinitesimal Signal I/O Characteristics
Actuator Extremely Small Signal I/O Characteristics
yNotes on PCB Pattern Design
The LV8206T is a system driver IC fabricated in a BI-DCMOS process, and includes bipolar circuits, MOS logic circuits,
and MOS driver circuits on a single chip. This means that ground leading and sneak currents must be considered during
application circuit design.
— Ground and VCC/VS lines
The LV8206T ground and power supply pins are classified as follows.
Small-signal system ground pins → GND (pin 31)
Large-signal system ground pins → PGND1 (pin 43), PGND3 (pin 12)
Small-signal system power supply pins → VCC (pin 7)
Large-signal system power supply pins → VS (pin 26), VS1 (pin 46), VS2 (pin 40), and VS3 (pin 10)
Capacitors must be inserted between the small-signal system power supply pin (pin 7) and ground pin (pins 31).
Locate these capacitors as close to the IC as possible.
The large-signal system ground (PGND) pins must be connected with the shortest distances possible, and furthermore
must not have any shared impedances with the small-signal system ground lines. The large-signal system power
supply (VS) pins must also be connected with the shortest distances possible, and capacitors must be inserted between
these pins and the corresponding large-signal system ground pin. Locate these capacitors as close to the IC as possible.
— Location of small-signal system external components
Of the small-signal system external components, those that are connected to ground must be connected to the
small-signal system ground with the shortest possible lines.
No. 7189 - 12/14
LV8206T
Block Diagram
MUTE
VS1
IN1F
IN1R
H-bridge
2
OUT1F Focus
Pre-driver
Pre-driver
Control logic
OUT1R
PGND1
VS2
H-bridge
3
IN2F
IN2R
OUT2F Tracking
Control logic
OUT2R
PGND2
VS4
Sled
Three
phase
stepper
S1
S2
S3
SUO
SVO
SWO
Pre-driver
Control logic
PGND3
SCOM
SWCO
SVCO
SUCO
Actuator Block
VG
CPC1 CP1 CPC2 CP2
Charge pump
COMIN WIN VIN
V
1
VCOIN
VCO
CC
RMAX
VCO
+
Divider
Drive waveform
synthesis
COM
VS
PLL
+
CLK
BRK
MODE
UOUT
VOUT
Sensorless logic
S/S
Commutation
logic
VREF
WOUT
GND
FG
GND1
PWM
Spindle Motor Driver Block
No. 7189 - 13/14
LV8206T
Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the
performance, characteristics, and functions of the described products in the independent state, and are
not guarantees of the performance, characteristics, and functions of the described products as mounted
in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an
independent device, the customer should always evaluate and test devices mounted in the customer's
products or equipment.
SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any
and all semiconductor products fail with some probability. It is possible that these probabilistic failures
could give rise to accidents or events that could endanger human lives, that could give rise to smoke or
fire, or that could cause damage to other property. When designing equipment, adopt safety measures
so that these kinds of accidents or events cannot occur. Such measures include but are not limited to
protective circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO Semiconductor products (including technical data,services) described
or contained herein are controlled under any of applicable local export control laws and regulations, such
products must not be exported without obtaining the export license from the authorities concerned in
accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or
otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO Semiconductor product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and
reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual
property rights or other rights of third parties.
This catalog provides information as of November, 2003. Specifications and information herein are subject
to change without notice.
No. 7189 - 14/14
相关型号：
©2020 ICPDF网 联系我们和版权申明