5CH BTL Motor Drive IC
Semiconductor
http:// www.auk.co.kr
S3057
Description
The S3056 contains 4 channels voltage-type BTL drivers for actuators
[ focus, tracking ] and sled, spindle motor drivers and it also contains 1 channel of
bi-directional tray motor driver.
It supports various applications with pb free and heat-sink package.
Application
◈ CD-Player
◈ CD-ROM
SSOPH-28N
◈ DVD-Player
With Heat-sink
Features and Benefits
◈ 1 Channel is bi-directional DC motor driver for tray.
◈ 4 Channels are voltage-type BTL drivers for
ORDERING INFORMATION
actuators[ focus, tracking ] and sled, spindle motors.
◈ Separating power of Vcc1 and Vcc2 is to improve power efficiency.
Product
Marking
Package
S3057
S3057
SSOPH-28N
◈ Built in Level shift circuit.
◈ Built in Thermal shut down circuit.
◈ Built in Mute mode.
◈ Dual Actuator drivers
▲ Marking Detail Information
A general purpose input OP Provides differential input for signal addition.
The output structure is two power OPAMPS in bridge configuration.
S3057(①)
YYWW(②)
◈ Sled motor driver
A general purpose input OP provides differential input for signal addition.
The output structure is one power OPAMP in bridge configuration.
① Device Code
② Year & Week Code
◈ Spindle driver
Single input linear BTL driver. The output structure are two power
OPAMPS in bridge configuration.
◈ Tray Bi-directional driver
The DC motor driver supports forward/reverse control for tray motor.
KSD-I7A007-001
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S3057
◈ Internal Block Diagram & Pin Assignment
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◈ Pin Description
NO
SYMBOL
I/O
DESCRIPTION
1
VINFC
I
Input for focus driver
2
NC
-
-
3
NC
-
-
4
VINSL
I
Input for sled driver
5
NC
-
-
6
FWD
I
Tray driver input signal for forward direction
7
REV
I
Tray driver input signal for reverse direction
8
VCC1
PWR
9
VOTR-
O
Tray driver output (-)
10
VOTR+
O
Tray driver output (+)
11
VOSL+
O
Sled driver output (+)
12
VOSL-
O
Sled driver output (-)
13
VOFC-
O
Focus driver output (-)
14
VOFC+
O
Focus driver output (+)
15
VOTK+
O
Tracking driver output (+)
16
VOTK-
O
Tracking driver output (-)
17
VOLD+
O
Spindle driver output (+)
18
VOLD-
O
Spindle driver output (-)
19
VCC2
PWR
20
NC
-
-
21
VCTL
-
Speed control input of tray driver
22
GND
-
Ground
23
VINLD
I
Input for spindle driver
24
NC
-
-
25
NC
-
-
26
VINTK
I
Input for tracking driver
27
BIAS
I
Input for reference voltage
28
MUTE
I
Input for mute control
VCC for pre-drive block and power block of sled & tray
VCC for power block of focus, tracking and spindle
Symbol of + and – [ output of drives ] means polarity to input pin.
For example : if voltage level of pin1 is high, pin14 is high
KSD-I7A007-001
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◈ Absolute Maximum Ratings ( Ta = 25℃ )
Parameter
Symbol
Limits
Unit
Supply Voltage
VCC1/VCC2
13.5
V
Power Dissipation
Pd
1.7
W
Operate Temperature Range
Topr
-35 ~ +85
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
Symbol
Limits
Unit
VCC1
4.3 ~ 13.2
V
VCC2
4.3 ~ VCC1
V
[ Pd ] When mounted on a 70mm×70mm×1.6mm glass epoxy board.
Reduced by 13.6mW for each increase in Ta of 1℃
[ Tstg ] Should not exceed Pd or SOA and Tj=150℃ values
◈ Guaranteed Operating Conditions ( Ta = 25℃ )
Parameter
Power Supply Voltage
◈ Power Dissipation Curve [ Pd ]
◈ 70mm×70mm×1.6mm glass epoxy board .
◈ De-rating is done at 13.6mW/℃ for operating above Ta=25℃
KSD-I7A007-001
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◈ Electrical characteristics
( Unless otherwise specified Ta=25℃, Vcc1=12V, Vcc2=5V, BIAS=2.5V, RL=8Ω/12Ω/20Ω/45Ω)
NO
1
2
3
Characteristics
Symbol
Quiescent current
Voltage for Mute on
Voltage for Mute off
Specification
Condition
Unit
Iqc
Vston
Vstoff
MIN.
0
2
TYP.
30
-
MAX.
0.5
5
mA
V
V
Voo
Vom
Gv
@12Ω Load
VIN=BIAS+0.2Vpp ac @1khz
-50
3.6
21.5
4
23.5
50
25.5
mV
V
dB
@20Ω Load
VIN=BIAS+0.2Vpp ac @1khz
-100
7.5
18.0
9.0
20.0
100
22.0
mV
V
dB
@8Ω Load
VIN=BIAS+0.2Vpp ac @1khz
-50
13.5
3.5
15.5
50
17.5
mV
V
dB
0.7
1.1
1.5
V
-
-
0.1
V
1
1.55
2.2
V
7.4
9.2
11
dB
< Actuator Driver: Focus, Tracking >
4
5
6
Output Offset Voltage
Maximum output Voltage
Voltage Gain
< Sled Motor Driver >
7
8
9
Output Offset Voltage
Maximum output Voltage
Voltage Gain
Voosl
Vomsl
Gvsl
< Spindle Motor driver >
10
11
12
Output Offset Voltage
Maximum output Voltage
Voltage Gain
Voold
Vomld
Gvld
< Tray Motor driver >
Vsat1
Upper + Lower saturation
IL=200mA
Output saturation voltage1
between FWD and REV
13
Output saturation Voltage1
14
Output saturation voltage
between F&R
15
Output saturation Voltage2
Vsat2
Upper + Lower saturation
IL=200mA
16
Output adjustable gain on
"H" side voltage
VvtrH
VCTL=2V
△Vsat1
< Tray Motor driver input logic >
17
High level input voltage
VIH
1.5
-
Vcc
V
18
Low level input voltage
VIL
-0.3
-
0.5
V
19
High level input current
IIH
-
180.0
270.0
uA
VFWD=VREV=5V
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Application Information
1. Thermal Shut Down Circuit
Focus, Tracking, Tray, Spindle,
Sled, Con. Current
Reg. Bandgap
Voltage [ 1.25V ]
R2
R3
IHys
R1
R4
The built-in thermal shutdown circuit mutes the output current when the chip temperature
reaches 175℃ (typ.). The hysteresis is set to 25℃ (typ.) by IHys,
so the circuit will start up again when the chip temperature falling to 150℃ (typ.)
2. Bias & Mute Circuit
Focus, Tracking, Sled
Spindle Con. Current
Bias
Mute
R1
R3
R2
R4
Bias pin (pin 27) should be pulled up to more than 1.2V. In case the bias pin’s voltage is pulled down
below 1.2V (typ.), the output current is muted, also Mute pin is same as Bias pin.
[Except Tray, Regulator, Comparator, those are only controlled by Vcc1. ]
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3. BTL Driver Circuits [Focus, Tracking, Sled, Spindle]
R4
VI-Converter
R3
Level Shift
Va(+)
Iconv
Vin
R1
Bias
-
-
R2
+
Vo(+)
+
PAMP1
Iconv(+)
+
-
Iconv(-)
Vo(-)
+
PAMP2
R5
Va(-)
R6
-
Pref
R7
BTL Driver Circuits are composed of VI-Converter, Level Shifter and Output power AMP.
VI-Converter converts voltage of Vin into current [Iconv ]
Iconv = (Vin – Bias ) / R1[10KΩ]
[ Closed loop Voltage Gain Calculation ]
Va(+) = (R2×Iconv ) + Pref
Va(-) = (-R5×Iconv) + Pref
Vo(+) = Va(+)×(1 + R4/R3 )
Vo(-) = Va(-)×( 1 + R7/R6 )
[ * R2 = R5 , R3 = R6, R4 = R7 * ]
Focus, Tracking closed loop Voltage Gain [ R2 = 25KΩ, R3 = 10KΩ, R4 = 20KΩ ]
Gain = 20 log [{ Vo(+) - Vo(-) } / (Vin - Bias) ]
= 20 log [{ Va(+)×( 1 + R3/R4 ) - Va(-)×( 1 + R6/R7 ) } / ( Vin – Bias ) ]
= 20 log [{(R2×Iconv ) + Pref }×( 1 + R4/R3 )]– [{(-R5×Iconv) + Pref }×( 1 + R7/R6 )]
(Vin – Bias )
= 20 log [2×(25K/10K)×{1+(20K/10K)} ]
= 23.5 [dB]
Sled closed loop Voltage Gain [R2 = 25KΩ, R3 = 10KΩ, R4 = 10KΩ ]
Gain = 20 log [2× (25K/10K)×{1+(10K/10K)} ]
= 20 [dB]
Spindle closed loop Voltage Gain [R2 = 15KΩ, R3 = 10KΩ, R4 = 10KΩ]
Gain = 20 log [2× (25K/10K)×{1+(10K/10K)} ]
= 15.5 [dB]
KSD-I7A007-001
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4. Tray driver logic input
Speed Control
Driver 1
R2
VOTR(+)
-
R1
+
VOTR(-)
VCTL
REV
FWD
R3
R5
R4
R6
Driver 2
Switching Logic
FWD [pin6]
REV [pin7]
VOTR+ [pin10]
VOTR- [pin9]
FUNCTION
L
L
OPEN
OPEN
Open mode
L
H
L
H
Reverse mode
H
L
H
L
Forward mode
H
H
L
L
Brake mode
Input circuit of pin6 [FWD] and pin7 [REV] is designed to avoid simultaneous activation of upper and
lower output power TR. however, in order to improve reliability, apply motor forward/reverse
input once through open mode. We recommend that the time period of open state is longer than 10msec.
“H” side output voltage on output voltage [VOL+, VOL-] varies depending on output control terminal
for tray. [pin21]“H” side output voltage is set three times (9.2dB typ.) VTCL [pin21], and “L” side
output voltage is equal to output saturation voltage.
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Characteristic Diagrams
Fig. 1 VCC - IQC
Fig. 2 Temperature - IQC
Fig. 3 VOM - VCC
Fig.4 VOM - VCC
Ω
Ω
Fig. 5 VOM - VCC
Ω
KSD-I7A007-001
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S3057
◈ Testing Circuit
KSD-I7A007-001
SEPT., 2010 REV. 01
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S3057
◈ Outline Dimension
SSOPH-28N
With Heat-sink
KSD-I7A007-001
SEPT., 2010 REV. 01
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S3057
The AUK Corp. products are intended for the use as components in general electronic
equipment (Office and communication equipment, measuring equipment, home
appliance, etc.).
Please make sure that you consult with us before you use these AUK Corp. products
in equipments which require high quality and / or reliability, and in equipments which
could have major impact to the welfare of human life(atomic energy control, airplane,
spaceship, transportation, combustion control, all types of safety device, etc.). AUK
Corp. cannot accept liability to any damage which may occur in case these AUK Corp.
products were used in the mentioned equipments without prior consultation with AUK
Corp..
Specifications mentioned in this publication are subject to change without notice.
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