BCD AM5954AM28-E1 4-channel motor driver for dvd player Datasheet

Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
General Description
Features
The AM5954A is a four-channel BTL driver IC for
driving the motors and actuators in products for DVDplayer drivers. Two of the channels use current feedback to minimize the current phase shift caused by the
influence of load inductance. This IC is an improved
version of AZ5954.
·
·
·
The AM5954A is available in HSOP-28 Package.
·
AM5954A
Level Shift Circuit On Chip
Internal Standby Mode
Built-in Thermal Shutdown Circuit
Applications
DVD Player
HSOP-28
Figure 1. Package Type of AM5954A
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Pin Configuration
M28 Package
(HSOP-28)
VINFC
1
28
STBY
CFCerr1
2
27
BIAS
CFCerr2
3
26
VINTK
VINSL+
4
25
CTKerr1
VINSL-
5
24
CTKerr2
VOSL
6
23
VINLD
VNFFC
7
22
GND
FIN
(GND)
FIN
(GND)
VCC
8
21
PVCC2
PVCC1
9
20
VNFTK
PGND
10
19
PGND
VOSL-
11
18
VOLD-
VOSL+
12
17
VOLD+
VOFC-
13
16
VOTK-
VOFC+
14
15
VOTK+
Figure 2. Pin Configuration of AM5954A (Top View)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Pin Description (Note 1)
Pin Number
Pin Name
Function
1
VINFC
2
CFCerr1
For connection of capacitor for the error amp filter
3
CFCerr2
For connection of capacitor for the error amp filter
4
VINSL+
Op Amp input (+) for the sled driver
5
VINSL-
Op Amp input (-) for the sled driver
6
VOSL
Op Amp output for the sled driver
7
VNFFC
8
VCC
9
PVCC1
Power supply for loading channel
10
PGND
Ground for sled driver block
Focus driver input
Focus driver feedback pin
Supply voltage
11
VOSL-
Sled driver output (-)
12
VOSL+
Sled driver output (+)
13
VOFC-
Focus driver output (-)
14
VOFC+
Focus driver output (+)
15
VOTK+
Tracking driver output (+)
16
VOTK-
Tracking driver output (-)
17
VOLD+
Loading driver output (+)
18
VOLD-
Loading driver output (-)
19
PGND
Ground for actuator driver block
20
VNFTK
21
PVCC2
Power supply voltage for actuator driver block
22
GND
Ground
23
VINLD
24
CTKerr2
For connection of capacitor for the error amp filter
25
CTKerr1
For connection of capacitor for the error amp filter
26
VINTK
27
BIAS
Bias input
28
STBY
Standby control
Tracking driver feedback pin
Loading driver input
Tracking driver input
Note 1: The indicated polarities for the output pin are for when all inputs are (+).
The output H bridge power supply pins are PVCC2 for the focus, tracking channel, PVCC1 for the loading
channel, and VCC for the pre-block and sled channel.
Always ensure that VCC ≥ PVCC.
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
3
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Functional Block Diagram
THERMAL
SHUT DOWN
STANDBY
28
1
VINFC
10K
STBY
20K
27
2
CFCerr1
CFCerr2
BIAS
7.5K
26
3
20k
VINSL+
VINSL-
4
VINTK
10k
25
7.5k
CTKerr1
7.5k
24
5
CTKerr2
7.5k
VOSL
VNFFC
23
6
VINLD
22
7
GND
2
2
10K
8
VCC
10K
21
VCC
PVCC2
9
PVCC1
25K
PVCC2
20
15k
PVCC1
10
VNFTK
19
PGND
PGND
11
18
VOSL-
VOLD-
12
LOADING
DRIVER
SLED
DRIVER
17
VOSL+
VOLD+
16
13
VOFC-
VOTK-
14
ACUATOR
DRIVER
ACTUATOR
DRIVER
VOFC+
15
VOTK+
VCC
PVCC2 PVCC1
Figure 3. Functional Block Diagram of AM5954A
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
4
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Ordering Information
-
AM5954A
E1: Lead Free
Blank: Tin Lead
Circuit Type
Package
TR: Tape and Reel
Blank: Tube
M28: HSOP-28
Package
Part Number
Temperature
Range
HSOP-28
0 to 70oC
Marking ID
Tin Lead
Lead Free
AM5954AM28
AM5954AM28-E1
Tin Lead
Packing
Type
Lead Free
AM5954AM28 AM5954AM28-E1
AM5954AM28TR-E1
Tube
AM5954AM28-E1 Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 2)
Parameter
Symbol
Value
Unit
VCC, PVCC1/2
13.5
V
Power Dissipation
PD
1.7 (Note 3)
W
Operating Junction Temperature
TJ
150
oC
Storage Temperature Range
TSTG
-55 to 150
oC
ESD (Human Body Model)
ESD
2000
V
ESD (Machine Model)
ESD
200
V
Supply Voltage
Note 2: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Note 3: The power dissipation is reduced by 13.6mW for each increase in temperature of 1oC over 25oC.
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature
Symbol
Min
Max
Unit
VCC
4.0
13.2
V
PVCC1
4.0
VCC
V
PVCC2
4.0
VCC
V
TA
0
70
oC
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Electrical Characteristics
(TA=25oC, VCC=PVCC=12V, PVCC2=5V, VBIAS=2.5V, RL1=RL2=RL3= RL4=8Ω, RD=0.5Ω, CFC=CTK=100pF,
unless otherwise specified.)
Parameter
Symbol
Quiescent Current
ΙQC
Standby Current
ΙST
Test Conditions
Min
Standby-on Voltage
VSTON
All channels off
0
Standby-off Voltage
VSTOFF
All channels on
2.0
Typ
Max
Unit
18
27
mA
0.5
mA
0.5
V
V
Actuator Driver
Output Offset Current
IOO
Maximum Output Amplitude
VOM
VIN=VBIAS±1.5V
3.6
3.8
gm
VIN=VBIAS±0.2V
1.3
1.5
VBIAS=6V
VCC=PVCC1=5V
Transmission Gain
-6
6
mA
V
1.7
A/V
-0.3
11.0
V
-0.3
4.0
V
Sled Motor Driver/Pre Op Amp
Common Input Voltage Range
VICM
IIB
14
300
nA
Output Low Level Voltage
VOL
0.1
0.3
V
Output Source Current
ISO
0.3
Output Sink Current
ISI
1
Input Bias Current
0.58
mA
mA
Sled Motor Driver
Output Offset Voltage
VOOFSL
VCC=5V
-100
Maximum Output Voltage
VOMSL
VIN=VBIAS±1.5V
7.5
9
Closed-loop Voltage Gain
GVSL
VIN=VBIAS±0.2V
18.0
20.0
100
mV
V
22.0
dB
50
mV
Loading Motor Driver
Output Offset Voltage
Maximum Output Voltage
Closed-loop Voltage Gain
Gain Error by Polarity
VOOFLD
-50
VIN=VBIAS±2.0V
7.5
9
V
VOMLD
VIN=VBIAS±1.5V
VCC=PVCC1=5V
3.6
3.8
V
GVLD
VIN=VBIAS±0.2V
13.5
15.5
17.5
dB
∆GVLD
VIN=VBIAS±0.2V
0
1
2
dB
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Test Circuit
100µH
RL2
RD
V2
100pF
VST
VBIAS
28
27
26
25
24
23
22
21
20
A
IO2
+
VIN4
VIN2
-
RL4
100µF
16V
19
VO2
VO4
18
+
+
-
17
16
15
VOLD- VOLD+ VOTK- VOTK+
AM5954A
VOSL- VOSL+ VOFC- VOFC+
1
2
3
VIN1
4
5
6
7
8
9
10
11
12
-
VIN3
A ICC
V VOP
13
14
-
+
VO3
+
VO1
+
100µF
16V
100pF
A
RL3
V1
IO1
-
RD
RL1
100µH
Figure 4. Test Circuit of AM5954A
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
7
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Typical Performance Characteristics
4
VCC=PVCC1=12V
3
PVCC2=5V
VCC=PVCC1=12V
12
PVCC2=5V
BIAS=2.5V
Output Voltage: VO (V)
Output Voltage: VO (V)
5
2
1
0
-1
RL=4Ω+100µH
-2
RL=8Ω+100µH
-3
RL=12Ω+100µH
-4
RL=20Ω+100µH
8
BIAS=2.5V
4
0
-4
RL=20Ω
-8
RL=12Ω
RL=8Ω
-12
-5
-0.4
-0.2
0.0
0.2
-1.2
0.4
-0.8
-0.4
0.0
0.4
0.8
1.2
Input Voltage: VIN (V)
Input Voltage: VIN (V)
Figure 5. Driver I/O Characteristics
(Focus and Tracking, Note 4)
Figure 6. Driver I/O Characteristics (Sled, Note 4)
5
4
Output Voltage: VO (V)
3
Op Amp Output Voltage: OP OUT (V)
VCC=PVCC=5V
BIAS=2.5V
2
1
0
-1
RL=4Ω
RL=8Ω
-2
RL=12Ω
-3
RL=20Ω
VCC=5V
4
3
-
2
OP IN
+
OP OUT
V
1
-4
0
-1.0
-0.5
0.0
0.5
1.0
0
1
2
3
4
5
Op Amp Input Voltage: OP IN (V)
Input Voltage: VIN (V)
Figure 8. Op Amp I/O Characteristics (Note 4)
Figure 7. Driver I/O Characteristics (Loading, Note 4)
Note 4: Input voltage herein is referenced to Bias pin voltage.
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Typical Performance Characteristics (Continued)
180
60
10K
10µ
g
Gain: g (dB)
2.5V
V IN
20K
100µ
0
20
0
Phase: θ (deg)
90
40
-90
θ
VCC=12V
PVCC=5V
-20
10k
-180
100k
1M
10M
Frequency: f (Hz)
Figure 9. Op Amp Phase-Frequency, AmplitudeFrequency Characteristics
2.0
Power Dissipation (W)
1.6
1.2
0.8
0.4
0.0
0
50
100
150
O
Ambient Temperature ( C)
Figure 10. Power Dissipation Curve
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Typical Application
µ-COM
LOADING
STANDBY
VCENTER
TRACKING
FOCUS
SLED
DSP
TRACKING COIL
LOADING
MOTOR
5V
Rd
M
28
27
26
25
24
23
22
21
20
19
18
17
16
15
9
10
11
12
13
14
AM5954A
1
2
3
4
5
6
7
8
5V or 12V
M
5V or 12V
SLED
MOTOR
Rd
FOCUS COIL
Figure 11. Typical Application of AM5954A in DVD Player
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
10
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Application Information
1.
2.
3.
4.
5.
6.
Supplement: (Current-feedback driver)
This IC has a built-in thermal shutdown circuit
that mutes the output current when the chip temperature reachs 178oC (Typ). The hysteresis is set
to 25oC (Typ), so the driver circuits start up again
when the chip temperature falls to 153oC (Typ).
The driver buffer is switched off when the supply
voltage falls below 3.5V (Typ), and is switched
back on when the voltage reaches 3.7V (Typ)
again.
In case standby pin voltage is under 0.5V or
opened, quiescent current is muted. Standby pin
voltage should be over 2.0V for normal application.
BIAS pin (pin 27) should be pulled up more than
1.2V. In case bias pin voltage is pulled down
under 0.9V (Typ), output current is muted.
Insert the by-pass capacitor (approximately
0.1µF) between VCC-pin and GND-pin as near as
possible to this IC.
Heat dissipation fins are attached to the GND
inside the package. Make sure to connect them to
the external GND.
The transmission gain (output current/input
voltage) is given by:
gm=1/(RD + RWIRE) (A/V)
RWIRE is the total gold wire resistance inside the
package (0.15Ω ± 0.05Ω ) (Typ).
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
11
Data Sheet
4-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5954A
Mechanical Dimensions
HSOP-28
Unit: mm(inch)
17.890(0.704)
18.190(0.716)
0.204(0.008)
0.360(0.014)
0.400(0.016)
1.270(0.050)
10.000(0.394)
10.650(0.419)
7.400(0.291)
7.600(0.300)
0o ~ 8 o
0.800(0.031) TYP
5.050(0.199)
5.250(0.207)
0.230(0.009)
0.470(0.019)
0.100(0.004)
0.300(0.012)
2.180(0.086)
2.330(0.092)
2.280(0.090)
2.630(0.104)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
12
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