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PDF LV8220FN Data sheet ( Hoja de datos )
| Número de pieza | LV8220FN | |
| Descripción | CD/MD System Motor Driver | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number : EN7811A
LV8220FN
Bi-CMOS IC
CD/MD System Motor Driver
Overview
The LV8220FN is a system motor driver IC that implements all the motor driver circuits needed for CD and MD
products. Since the LV8220FN provides a three-phase PWM spindle driver, a three-phase sled driver, and focus and
tracking drivers (as two PWM H-bridge driver channels), it can contribute to further miniaturization, thinner from factors,
and lower power in end products. The adoption of the direct PWM sensorless drive method for the spindle driver and the
sled driver makes it possible to implement high efficiency motor drive with few external parts.
Features
• Direct PWM drive (low side control)
• Three-phase full-wave sensorless motor driver (spindle and sled blocks)
• Soft switching drive (spindle block)
• Reverse torque braking
• MOS output transistors
• Standby mode power saving function
• FG output
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Power supply voltage 1
VCC max
Power supply voltage 2
VG max
Output block power supply voltage
VS max
Output current
IO max
Power dissipation 1
Pd max1
Independent IC
Power dissipation 2
Pd max2
Mounted on a specified board
Operating temperature
Topr
Storage temperature
Tstg
* Mounted on a specified board: 50mm×50mm×0.8mm, glass epoxy
Ratings
6.0
9.6
6.0
0.8
0.35
1.1
-20 to +85
-55 to +150
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
Unit
V
V
V
A
W
W
°C
°C
50907 TI IM B8-6675 No.7811-1/15
1 page  
Pin Assignment
LV8220FN
36 35 34 33 32 31 30 29 28 27 26 25
SPGND
SLGND
37 SPFG
SLFG 24
38 UOUT
SUO 23
39 SPCOM
SLCOM 22
40 VOUT
SVO 21
41 WOUT
SWO 20
42 SPPWM
43 VS2
LV8220FN
SLPWM 19
VS1 18
44 OUT2F
OUT1F 17
45 OUT2R
OUT1R 16
46 PGND2
PGND1 15
47 SPBR
IN1R 14
48 S/S
IN1F 13
SPPD
SEL
1 2 3 4 5 6 7 8 9 10 11 12
Top view
Pin Functions
Pin
No.
13,14
3,4
7
Pin
Name
IN1F/R
IN2F/R
CLK
12 SEL1
19 SLPWM
42 SPPWM
47 SPBR
48 S/S
Pin Description
Actuator H-bridge logic input.
Logic system reference clock input. Provide a
frequence that is 32 times that of the PWM
frequency.
Three-phase sled mode switching input. When
high, the block operates in sensorless drive mode,
and when low, the block operates in stepping drive
mode.
Sled drive block PWM signal input. When high, the
control output transistor (SINK) is turned on.
Spindle drive block PWM signal input. When high,
the control output transistor (SINK) is turned on.
Spindle drive block brake input. When low, reverse
torque braking is applied.
Start/stop input. When high, all of the spindle, sled,
and actuator blocks operate. When low, the IC
goes to the standby state (power saving mode).
Equivalent Circuit
VCC
10kΩ
100kΩ
Continued on next page.
No.7811-5/15
5 Page 
LV8220FN
LV8220FN Functional Description and Notes on External Components
The LV8220FN is a system motor driver IC that can implement, with just a single chip, the motor driver circuits
required for CD and MD systems. Since the LV8220FN provides not only a spindle driver, but drivers (with an H-
bridge structure) for sled, focus, and tracking motors, it can contribute to miniaturization and thinner form factors in end
products. Since the spindle and sled drivers adopt a direct PWM sensorless drive technique, they provide high
efficiency motor drive with a minimal number of external components.
Read the following notes before designing driver circuits using the LV8220FN to design a system with fully satisfactory
characteristics.
1. Channel Structure
The LV8220FN drive circuits have the 4-channel structure shown below. To minimize power loss in the output
blocks, this IC adopts synchronous commutation direct PWM (the recommended PWM frequency is 132kHz) in all
channels, and at the same time, adopts low on-resistance DMOS devices (total high and low side on-resistance: 0.8Ω,
typical) as the output transistors.
Furthermore, this IC’s sled driver channel can operate in either three-phase sensorless or three-phase stepper drive
mode as selected by the SEL pin.
Applications
Three-pahse
sensorless
Three-phase
stepping
H-bridge
Remarks
Spindle
c
Sled
c
c
Select the mode on SEL pin
Focus
c
Tracking
c
2. Power Supply Pins
The LV8220FN has six power supply pins: the small signal system circuit power supply VCC (pin 6), the source
output gate drive power supply VG1 (pin 5), and power supplies for each of the output transistors, namely SPVS (pin
35), SLVS (pin 26), VS1 (pin 18), and VS2 (pin 43). All of these pins must be connected to an external power supply.
(Since this IC does not include a built-in charge pump circuit for output gate drive, power must also be supplied to
the VG1 pin.) Since VG2 (pin 31) is the output of an internal 4V regulator, there is no need to connect a power
supply to this pin. Note that capacitor must be inserted between each power supply pin and ground.
When power is first applied, it is desirable to apply power in the order VS first, then VG1, and finally VCC.
Although no problems with IC operation will occur of any other order is used, note that circuit current (ICC) may
flow during the period until all power supply levels have been provided.
3. S/S Circuit
The S/S pin (pin 48) functions as the system start/stop pin. A high level starts IC operation and causes all channels to
operate in drive mode. A low level switches the IC to the standby state (power saving mode). In the standby state, all
power supply currents go to zero. Total system power consumption can be reduced by manipulating the S/S pin to
operate the drivers intermittently.
Note that the S/S pin must be held at the low level while the VCC power supply level is first applied.
4. CLK Pin
The LV8220FN CLK pin (pin 7) must be connected to the reference clock signal supplied by the DSP. The CLK
signal is used as the reference clock for spindle block and sled block sensorless drive logic operation. Therefore, the
CLK signal is always required in start mode. A frequency 32 times that of the PWM input signal must be provided as
the CLK input signal. (Example: when the SPPWM and SLPWM input frequency is 132kHz, the CLK signal must be
4.224MHz.)
No.7811-11/15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LV8220FN.PDF ] | |
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