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Ordering number : ENA0817
Bi-CMOS IC
LV8212T
Overview
For CD and DVD-ROM
System Motor Driver
The LV8212T is a system motor driver IC that implements all the motor driver circuits required by CD and DVD players in just a single IC. Since the LV8212T includes both a spindle motor driver and sled, tilt, focus and tracking drivers (as two-phase stepper method), it can contribute to thinner form factors and miniaturization in end products. Furthermore, the spindle motor driver uses a direct PWM sensor-less drive method that minimizes the number of external components and provides highly efficient motor drive.
Function
* PWM H-bridge motor driver (5channels) + direct PWM sensor-less motor driver
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Supply Voltage Output block supply voltage Predriver voltage (gate voltage) Spindle output current Channel 1 and 2 output current Channel 3 output current Channel 4 and 5 output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VS max VG max IO max1 IO max2 IO max3 IO max4 Pd max Topr Tstg Independent IC Conditions Ratings 6 6 10 1.3 0.8 0.6 0.8 0.45 -30 to +85 -55 to +150 Unit V V V A A A A W C C
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.
51607 MS PC B8-8546 No.A0817-1/13
LV8212T
Recommended Operating Conditions at Ta = 25C
Parameter Supply Voltage Output block supply voltage Predriver voltage (gate voltage) Symbol VCC VS VG Conditions Ratings 3.3 to 5.5 0 to VCC VS+3.5 to 9.8 Unit V V V
Electrical Characteristics Ta = 25C, VCC = 5V
Parameter Current drain 1 Current drain 2 Charge pump output Output voltage Control reference voltage Control reference voltage range Internal oscillator circuit Internal oscillation frequency Thermal protection circuit Thermal protection circuit operating temperature Temperature hysteresis width S/S pin High level input voltage range Low level input voltage range MUTE pin High level input voltage range Low level input voltage range VMUH VMUL OUT3F pin and OUT3R pin of channel 3 are OPEN 0 0.6 V 2.7 VCC V VSSH VSSL Start Stop 2.7 0 VCC 0.6 V V TSD Design target value 25 C TSD Design target value 150 180 C OSC1 2.6 3.2 4.0 MHz SREF 1.25 2 V VCP 9.5 9.8 V Symbol ICC1 ICC2 S/S pin : High S/S pin : Low (standby mode) Conditions min Ratings typ 5 max 9 20 mA A Unit
Actuator block : (channel 1, 2, and 3) at Ta=25C and VCC = 5V
Parameter Control Output offset voltage Actuator input pin Input voltage range Current feedback output pin Source Sink Output block Channel 1, 2 output ON resistance Channel 3 output ON resistance Ron3 Ron1, 2 IO = 0.5A, sum of the low and high side outputs IO = 0.5A, sum of the low and high side outputs 1.1 1.5 1.5 1.8 ISO ISI 30 30 40 40 50 50 A A VIN AREF = 1.65V 0 3.3 V VOFS AREF = IN1, 2, 3 = 1.65V -60 +60 mV Symbol Conditions min Ratings typ max Unit
Internal oscillator circuit (triangular wave) Oscillation frequency OSC2 AREF = 1.65V 170 200 230 kHz
Continued on next page.
No.A0817-2/13
LV8212T
Actuator block : (channel 4 and 5) at Ta=25C and VCC = 5V
Parameter Actuator input pin Input voltage range Output block Channel 4 and 5 output ON resistance Current control circuit Forward drive gain Reverse drive gain Dead band width Limiter voltage GDF+ (RF = 0.2) GDF(RF = 0.2) VDZ VRf AREF = 1.65V 0.15 (0.75) 0.15 (0.75) 25 0.17 0.17 (0.85) 0.17 (0.85) 75 0.20 0.185 (0.925) 0.185 (0.925) 95 0.23 V/V (A/V) V/V (A/V) mV V Ron4, 5 IO = 0.5A, sum of the low and high side outputs 1.3 1.6 VIN AREF = 1.65V 0 3.3 V Symbol Conditions min Ratings typ max Unit
Spindle motor driver block : at Ta=25C and VCC = 5V
Parameter Output block Source 1 Sink Source+Sink Position detection comparator Input offset voltage 1 Control VCTL input voltage range GSW pin (gain change) High level input voltage range Low level input voltage range Current control circuit Forward drive gain 1 Forward drive gain 2 Reverse drive gain 1 Reverse drive gain 2 Dead band width 1 Dead band width 2 Limiter voltage OSC pin High level input voltage range Low level input voltage range BRK SEL pin High level input voltage range Low level input voltage range FG1 output and FG3 output pin Low level output voltage VFGL IO = 0.5mA 0 0.5 V VBRH VBRL Short brake Reverse torque brake 2.7 0 VCC 0.6 V V OSCH OSCL 0.9 0.4 1.0 0.6 1.2 0.8 V V GDF+1 GDF+2 GDF-1 GDF-2 VDZ1 VDZ2 VRf GSW = L (RF = 0.2) GSW = H (RF = 0.2) GSW = L (RF = 0.2) GSW = H (RF = 0.2) GSW = L SREF = 1.65V GSW = H SREF = 1.65V 0.30 (1.50) 0.15 (0.75) 0.30 (1.50) 0.15 (0.75) 15 20 0.17 0.34 (1.70) 0.17 (0.85) 0.34 (1.70) 0.17 (0.85) 45 55 0.20 0.37 (1.85) 0.185 (0.925) 0.37 (1.85) 0.185 (0.925) 75 85 0.23 V/V (A/V) V/V (A/V) V/V (A/V) V/V (A/V) mV mV V VGSWH VGSWL Change to 1/2 gain (gain 2) Normally control GAIN (gain 1) 2.7 0 VCC 0.6 V V VCTL SREF = 1.65V 0 3.3 V VOFS1-1 Design target value VCC = 5.0V, VCOM = 2.5V -5 5 mV Ron (H) Ron (L) Ron (H+L) IO = 0.5A, VS = 5V, VG = 9.5V IO = 0.5A, VS = 5V, VG = 9.5V IO = 0.5A, VS = 5V, VG = 9.5V 0.25 0.25 0.5 0.40 0.40 0.80 Symbol Conditions min Ratings typ max Unit
*Design target value : Item specified to be a design target in the conditions column are not measured.
No.A0817-3/13
LV8212T
Package Dimensions
unit : mm (typ) 3289
9.0 7.0 48 49 33 32
7.0
64 1 0.4 (0.5) 0.16 16
17 0.125
1.2max
0.1
(1.0)
SANYO : TQFP64J(7X7)
Pin Assignment
MUTE SPVS GSW GND GND GND VCC VCC CPC BRK FG3 FG1 VS1 S/S VG CP
64 SPGND 1 UOUT 2 VOUT 3 WOUT 4 SPRF 5 SPGND 6 NC 7 SPGND 8
63
62
61
9.0
60
59
0.5
58
57
56
55
54
53
52
51
50
49 48 PGND1 47 OUT1F 46 OUT1R 45 OUT2F 44 OUT2R 43 OUT3F 42 VS3 41 PGND3
LV8212T
NC 9 SPVS 10 ISH 11 ISL 12 SPCOM 13 SPCIN 14 SPFIL 15 VCTL 16 17
OSC
40 OUT3R 39 PGND4 38 RF4 37 OUT4R 36 OUT4F 35 OUT5R 34 OUT5F 33 PGND5 18
SGND
19
SGND
20
SREF
21
AREF
22
IN5
23
IN4
24
CF3
25
IN3
26
CF2
27
IN2
28
CF1
29
IN1
30
VS4
31
GND
32
RF5
Top view
No.A0817-4/13
LV8212T
Block Diagram
RF4 PGND4 OUT4F OUT4R PGND3 OUT3F PGND1 OUT5R OUT3R OUT2R OUT1R OUT5F OUT2F OUT1F
VS4
VS3
PGND5 PRE DRIVE RF5 LOGIC LOGIC LOGIC LOGIC LOGIC MUTE OSC2 AREF IN5 SQ R AREF AREF CF1 IN1 PRE DRIVE PRE DRIVE PRE DRIVE PRE DRIVE
VS1
IN2 CF2 IN3 CF3
TSD SQ R OSC1 OSC SENSORLESS LOGIC
IN4
VREF
S/S BRK OSC SPCIN SPFIL
CP CPC VG
CHARGE PUMP
1/N
SPINDLE PRE DRIVE
SELECTOR
SPCOM SPVS
VCTL SREF AREF
SQ R
UOUT VOUT WOUT
SPGND SPRF GSW VCC GND FG1 FG3 SUB
No.A0817-5/13
LV8212T
Spindle and Actuator Control Truth Table
S/S H H L MUTE L H * spindle Active Mute Mute H-bridge1 Active Mute Mute H-bridge2 Active Mute Mute H-bridge3 Active Mute Mute H-bridge4 Active Active Mute H-bridge5 Active Active Mute
Pin Descriptions
Pin No. 1, 6, 8 2 3 4 5 7, 9 10, 63 11 12 13 14 15 16 17 Pin name SPGND UOUT VOUT WOUT SPRF NC SPVS ISH ISL SPCOM SPCIN SPFIL VCTL OSC Spindle motor COM point connection. Spindle motor position detection comparator filter pin. Connect a capacitor between this pin and SPFIL pin (pin 15). Spindle motor position detection comparator filter pin. Connect a capacitor between this pin and SPCIN pin (pin 14). Spindle speed control pin. Positive torque control is applied when greater than VCREF. Motor start-up oscillation frequency alternative pin. If this pin is connected to GND or the VCC pin, start-up oscillation select the internal oscillation dividing signal. When a capacitor connect between this pin and GND pin, the start-up frequency is adjusted by charge and discharge current (2.5A) and capacitance of capacity. 18, 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 SGND SREF AREF IN5 IN4 CF3 IN3 CF2 IN2 CF1 IN1 VS4 GND RF5 PGND5 OUT5F OUT5R OUT4F OUT4R RF4 PGND4 OUT3R PGND3 VS3 OUT3F OUT2R OUT2F OUT1R OUT1F Continued on next page. Channel 1 actuator output pin. Output current detection signal input pin of the channel 4 actuator. This pin must be used shorted to the PGND4 pin (pin 39). Output current detection pin of the channel 4 actuator. The drive current is detected by connecting low resistance to GND Output pin of the channel 3 actuator. GND pin of the output block of the channel 3 actuator. Power supply pin for drive of the channel 3 actuator. Connect a capacitor between this and GND. Channel 3 actuator output pin Channel 2 actuator output pin. H-bridge output of the channel 4 actuator. Small signal GND pin. Spindle control reference voltage input pin. Control reference voltage input pin of channel 4 and 5 actuator. Speed control pin of the channel 5 actuator. Speed control pin of the channel 4 actuator. Current feedback circuit output pin of the channel 3 actuator (H-bridge). Control signal input pin of the channel 3 actuator (H-bridge). Current feedback circuit output pin of the channel 2 actuator (H-bridge). Control signal input pin of the channel 2 actuator (H-bridge). Current feedback circuit output pin of the channel 1 actuator (H-bridge). Control signal input pin of the channel 1 actuator (H-bridge). Power supply pin for the channel 4 and 5 of the actuator. Connect a capacitor between this pin and GND. Ground Output current detection signal input of the channel 5 actuator. This pin must be used shorted to the PGND5 pin. (pin 33) Output current detection pin of the channel 5 actuator. The drive current is detected by connecting low resistance to GND H-bridge output of the channel 5 actuator. Power supply pin for spindle driver. Connect a capacitor between this pin and GND. Description Spindle output current detection pin. The drive current is detected by connecting low resistance to GND. 3-phase spindle U-phase output pin. Motor coil is connected to this pin. 3-phase spindle V-phase output pin. Motor coil is connected to this pin. 3-phase spindle W-phase output pin. Motor coil is connected to this pin. Detection signal input pin of spindle output current. This pin must be used shorted to the SPGND pin.
No.A0817-6/13
LV8212T
Continued from preceding page. Pin No. 48 49 50, 51 52 53 54 55 56 57 58 59, 60 61 62 64 Pin name PGND1 VS1 GND MUTE S/S GSW BRK CPC CP VG VCC FG1 FG3 GND GND pin of the output block of the channel 1, 2 actuator. Power supply pin for drive of the channel 1 and 2 actuator. Connect a capacitor between this and GND. Small signal GND pin. Sled driver block position detection comparator output pin. MUTE pin except for channels 4 and 5. The output pin, except for channels 4 and 5, must be left open. Spindle motor block start/stop control. Apply a high level for the start state. Spindle motor V type control GAIN switching pin. Spindle motor block braking type switching control. Low level : reverse torque braking. Used for charge pump voltage step up. Connect a capacitor between this and the CP pin (pin.57). Charge pump voltage step up pulse output. Connect a capacitor between this pin and CPC pin (pin.56) Charge pump voltage step up output. Connect a capacitor between this pin and GND. Small signal system power supply pin. Connect a capacitor between this pin and GND. FG pulse output pin ( MOS open drain output). Outputs a pulse signal equivalent to a one Hall sensor system pulse out put. FG pulse output pin ( MOS open drain output). Outputs a pulse signal equivalent to a three Hall sensor system pulse out put. Small signal GND pin. Description
Pin Functions
Pin No. 10, 63 2 3 4 1, 6, 8 Pin name SPVS UOUT VOUT WOUT SPGND Function Power supply pin for spindle driver. Connect a capacitor between this pin and GND 3-phase spindle output pin. Motor coil is connected to this pin. U-phase : Pin 2 V-phase : Pin 3 W-phase : Pin 4 Spindle output current detection pin. The drive current is detected by connecting low resistance to GND. 5 SPRF Detection signal input pin of spindle output current. This pin must be used shorted to the SPGND pin. 11 ISH Equivalent circuit
10 63
2
3
4 1 VCC 6 8
5
50k 11
12 ISL
2.5k
12 50k
13 14
SPCOM SPCIN
Spindle motor COM point connection. Spindle motor position detection comparator filter pin. Connect a capacitor between this pin and SPFIL pin (pin 15).
VG uout vout wout 50k 50k 50k 1k 13 14 1k 1k 1k 15
15
SPFIL
Spindle motor position detection comparator filter pin. Connect a capacitor between this pin and SPCIN pin (pin 14).
1k
1k
17
OSC
Motor start-up oscillation frequency alternative pin. If this pin is connected to GND or the VCC pin, start-up oscillation select the internal oscillation dividing signal. When a capacitor connect between this pin and GND pin, the start-up frequency is adjusted by charge and discharge current (2.5A) and capacitance of capacity.
500 17 500
18, 19
SPGND
Small signal GND pin. Continued on next page.
No.A0817-7/13
LV8212T
Continued from preceding page. Pin No. 16 20 Pin name VCTL SREF Function Spindle speed control pin. Positive torque control is applied when greater than VCREF. Spindle control reference voltage input pin. Equivalent circuit
VCC
500
21 22 23 24 AREF IN5 IN4 CF3 Control reference voltage input pin of channel 4 and 5 actuator. Speed control pin of the channel 5 actuator. Speed control pin of the channel 4 actuator. Current feedback circuit output pin of the channel 3 actuator (H-bridge). 26 CF2 Current feedback circuit output pin of the channel 2 actuator (H-bridge). 28 CF1 Current feedback circuit output pin of the channel 1 actuator (H-bridge). 25 IN3 Control signal input pin of the channel 3 actuator (H-bridge). 27 IN2 Control signal input pin of the channel 2 actuator (H-bridge). 29 IN1 Control signal input pin of the channel 1 actuator (H-bridge). 31, 50 51, 64 30 VS4 GND Small signal GND pin. Sled driver block position detection comparator output pin. Power supply pin for the channel 3 and 4 of the actuator. Connect a capacitor between this pin and GND. 32 RF5 Output current detection signal input of the channel 5 actuator. This pin must be used shorted to the PGND4pin. (pin 33) 33 PGND5 Output current detection pin of the channel 5 actuator. The drive current is detected by connecting low resistance to GND. 34,35 36, 37 38 OUT5F/R OUT4F/R RF4 H-bridge output of the channel 5 actuator. H-bridge output of the channel 4 actuator. Output current detection signal input pin of the channel 4 actuator. This pin must be used shorted to the PGND4 pin (pin 39). 39 PGND4 Output current detection pin of the channel 4 actuator. The drive current is detected by connecting low resistance to GND. 42 49 VS3 VS1 Power supply pin for drive of the channel 3 actuator. Connect a capacitor between this and GND. Power supply pin for drive of the channel 1 and 2 actuator. Connect a capacitor between this and GND. 40, 43 44, 45 46, 47 41 48 OUT3R/F OUT2R/F OUT1R/F PGND3 PGND1 Output pin of the channel 3 actuator. Output pin of the channel 2 actuator. Output pin of the channel 1 actuator. GND pin of the output block of the channel 3 actuator. GND pin of the output block of the channel 1 and 2 actuator.
20 500 21
16 500 22 23 500
VCC 5k 5k 24 26 28 10k 10k
VCC
25 27 29
30 34 36 35 37 33 39 VCC
32 38
42 49
40 44 46
43 45 47
41 48
Continued on next page.
No.A0817-8/13
LV8212T
Continued from preceding page. Pin No. 52 Pin name MUTE Function MUTE pin except for channels 4 and 5. The output pin, except for channels 4 and 5, must be left open. 53 SS Spindle motor block start/stop control. Apply a high level for the start state. 54 55 56 GSW BRK CPC Spindle motor V type control GAIN switching pin. Spindle motor block braking type switching control. Low level : reverse torque braking Used for charge pump voltage step up. Connect a capacitor between this and the CP pin (pin 57). Equivalent circuit
VCC
52 53 54 55
10k 50k
57 VCC
56 58
57
CP
Charge pump voltage step up pulse output. Connect a capacitor between this pin and CPC pin (pin 56)
58
VG
Charge pump voltage step up output. Connect a capacitor between this pin and GND.
59, 60 61
VCC FG1
Small signal system power supply pin. Connect a capacitor between this pin and GND. FG pulse output pin ( MOS open drain output). Outputs a pulse signal equivalent to a one Hall sensor system pulse out put.
VCC
61
62 FG3 FG pulse output pin ( MOS open drain output). Outputs a pulse signal equivalent to a three Hall sensor system pulse out put.
62
No.A0817-9/13
LV8212T
LV8212T Functional Description and External Components This document presents information necessary to design systems with the best possible characteristics and should be read before designing driver circuits using the LV8212T. 1. Output Drive Circuits and Speed Control Methods The LV8212T 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 devices on-resistance is 0.5 (typical)). The LV8212T spindle drivers control system takes an analog input and uses a V-type control amplifier. The gain of V-type control circuit can be selected by the following formula with the GSW pin (pin 54). typ = 0.34V/V (when the GSW pin is low) and typ = 0.17V/V (when the GSW pin is high). The V-type control amplifier based speed control system controls the speed by controlling the voltage of the VCTL pin (pin 16) and SREF pin (pin 20). The circuit provides forward torque when VCTL is greater than VCREF, and allows the application to select either reverse torque braking (when the BRK pin is low) or short-circuit braking (when the BRK pin is low) when VCTL is less than VCREF. The PWM frequency is twice the frequency of the charge pump pulse rate (pin 57). 2. Soft Switching Circuit This IC performs "soft switching", which is a technique that varies the duty and achieves quieter motor operation by reducing the level of motor drive noise. This IC provides a "current application ON/OFF dual sided soft switching" type soft switching function. 3. Current Limiter Circuit The current limit value of the current limiter circuit is determined by RF in the equation I = VRF/Rf (here, VRF = 0.20V, typical). Spindle block : the current limiter circuit detects the SPGND pin (pin 1, 6 and 8) peak current at the SPRF pin (pin 5) and turns the sink side transistor off. 4. OSC circuit The OSC pin (pin 17) is an oscillation terminal for start-up current commutation of sensor-less, it has two types, the main-clock dividing mode, and the self-excited oscillation mode. The main-clock dividing mode can be set-up by connecting the OSC pin to the VCC pin or GND. The set-up frequency is divided by internal oscillation frequency (here, 3.2 MHz as typical). And, when the OSC pin is connected to the VCC pin (high level), the main-clock divided by 4096 to get ground 781Hz. Also, when the OSC pin is connected to GND, the main-clock is divided by 3072 to get around 1042Hz. The self-excited oscillation mode can be set up by connecting a capacitor between the OSC pin and GND. When the self-excited oscillation mode is chosen, the OSC pin starts self-excited. Thus, it becomes set-up frequency. Oscillation frequency can be adjusted by changing the capacity of an external capacitor. (ex, if capacity is made small, the set-up frequency will become high.) When the OSC pin is connected to the VCC pin or GND, and if there is no problem in the start-up characteristic, the number of external components are reduced. However, if a problem occurs in it, you should choose the value of a capacitor which can obtain the best start-up characteristic after choosing self-excited mode. 5. Spindle Block Position Sensor comparator Circuit The spindle block position sensor comparator circuit uses the back EMF signal 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. Start-up problems due to noise on the comparator inputs can be ameliorated by inserting a capacitor (1000 of 4700pF) between the SPCIN pin (pin 14) and the SPFIL pin (pin 15). 6. Actuator Block (channel 4 and 5) Output Drive Circuit and Speed Control Method This IC adopts a synchronous commutation direct PWM drive method. Low on-resistance DMOS devices are used as the output transistors. (the upper and lower side output block devices on-resistance is 1.3 (typical)). This circuit takes an analog input and uses a V-type control amplifier. The V-type control amplifier based speed control system controls the speed by controlling the voltage of the IN4 pin (pin 23 : channel 4), the IN5 pin (pin 22 : channel 5) and the AREF pin (pin 21).
No.A0817-10/13
LV8212T
7. Actuator Block (channel 4 and 5) Current Limiter Circuit Actuator block : the current limiter circuit detects the PGND4 pin (pin 39 : channel 4) and the PGND5 pin (pin 33 : channel 5) peak current at the RF4 pin (pin 38 : channel 4) and the RF5 pin (pin 32 : channel 5) and turns the SINK side transistor off. 8. S/S and MUTE Circuit The S/S pin (pin 53) functions as the spindle motor driver's and the actuators motor driver's start/stop pin ; a high-level input specifies that the operation is in the start state. The MUTE pin (pin 52) operates in all the driver blocks except for channels 4 and 5 ; a high-level input mutes these outputs. In the muted state, the H-bridge drivers will shift to high-impedance state, regardless of the logic input conditions for the spindle motor driver, if mute is activated while the motor is active, the motor will slow down as set by the BRK pin (High means a short break, Low means a reverse torque brake). After the motor stops, all the outputs will become high (short brake condition). A low level input must be applied to the S/S pin to set the IC to the standby state (power saving mode). 9. BRK Circuit The BRK pin (pin 55) switches between reverse torque and short-circuit braking ; a high level selects short-circuit braking and a low level selects reverse torque braking. When the motor speed becomes adequately slow in the reverse torque braking state, the application must switch to the short-circuit braking state to stop the motor (Note : The IC must not be in the power saving state at this point.). Set the S/S pin (pin 53) to the low level to put the IC in power saving state. 10. FG Output Circuit The FG3 pin (pin 62) is the spindle block FG output pin. It provides a pulse signal equivalent to that provided by systems that use three Hall-effect sensors. The FG1 pin (pin 61) outputs a signal that follows the spindle output U phase back EMF voltage. The FG1 and the FG3 pins both have a MOS open-drain output circuit structure. This means that external pull-up resistors must be provided. Connect the power supply from the FG signal input side as the pull-up resistor power supply. We recommended using a resistor of about 10k. 11. Charge Pump Circuit Since the LV8212T has a DMOS (n-channel) output structure, it includes a charge pump based voltage step-up circuit. When capacitors (recommended value : 0.22F of higher) are connected between the CP and CPC pins, the IC generates a level that is twice the VCC voltage (or 9.5V). It is desirable that this IC be used with the voltage relation ship between the stepped-up voltage (VG) and the motor supply voltage (VS) meeting the condition VG-VS3.5V. Note that the stepped-up voltage (VG) is, by design, clamped at about 9.5V DC. If the stepped-up voltage (VG) exceeds 10V (VG max) due to ripple, the value of the VG pin capacitor must be increased. Observe the following points if the VG voltage is supplied externally. (1) The externally applied VG voltage must not exceed VGmax in the Absolute Maximum Ratings. (2) The capacitor between the CP and the CPC pin (pin 57 and 56) is not required. (3) 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. (4) 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.A0817-11/13
LV8212T
12. Notes on PCB Pattern Design The LV8212T is a system driver IC fabricated in a BI-DCMOS process, and includes bipolar circuits, MOS logic circuits, and MOS driver circuits on the same chip. This means that ground leading and sneak currents must be considered during application circuit design. (1) Ground and VCC/VS lines. The LV8212T ground and power supply pins are classified as follows. Small-signal system ground pins SGND (pin 18 and 19). Large-signal system ground pins PGND1 (pin 48), PGND3 (pin 41) and GND (pin 31 and 64). Small-signal system power supply pins VCC (pin 59 and 60). Large-signal system power supply pins SPVS (pin 10 and 63), VS1 (pin 49), VS3 (pin 42) and VS4(pin 38). Capacitors must be connected between the small-signal system power supply pin and GND. Locate these capacitors as close to the IC as possible. The large-signal system GND (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 connected between these pins and the corresponding large-signal system ground pin. Locate these capacitors as close to the IC as possible. (2) 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.
Application Circuit Example
10k 10k 0.22F 0.22F 60 VCC 59 VCC 58 VG 57 CP 56 CPC 55 BRK 54 GSW 53 S/S 52 MUTE 51 GND 50 49 GND VS1 48 PGND1 OUT1F 47 OUT1R 46 OUT2F 45 OUT2R 44 OUT3F 43 5V 7 NC 8 SPGND 9 NC 10 5V 11 ISH 12 ISL 13 SPCOM 14 SPCIN 2200pF 15 SPFIL SGND SGND SREF AREF 16 VCTL OSC 17 18 * 1000pF GND VS4 CF3 CF2 CF1 IN5 IN4 IN3 IN2 IN1 OUT5F 34 PGND5 33 RF5 31 32 0.5 RF4 38 OUT4R 37 OUT4F 36 OUT5R 35 SPVS VS3 42 PGND3 41 5V
FG3
1 SPGND 2 UOUT 3 VOUT 4 WOUT 5 SPRF 6 SOGND 0.2
SPVS
FG1
64 63 GND
62
61
LV8212T
OUT3R 40 PGND4 39 0.5
19
20
21
22
23
24 25 1k 30k 2200pF
26 27 1k 30k 2200pF
28 29 1k 2200pF 30k
30
5V
Remarks : Connect a capacitor the terminals SPVS and GND, the terminals VCC and GND, the terminals VS1 and GND, the terminals VS3 and GND and the terminals VS4 and GND. * When the motor start up oscillation frequency is adjusted, a capacitor is connected at the outer side of the OSC pin.
No.A0817-12/13
LV8212T
SANYO Semiconductor Co.,Ltd. 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 Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent 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 Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above.
This catalog provides information as of May, 2007. Specifications and information herein are subject to change without notice. PS No.A0817-13/13

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