Ceramate CMD4510 Motor driver for portable dvd player with dc-dc step down converter Datasheet

CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
DESCRIPITION
Outline Drawing
The CMD4510 is a 4-channel BTL driver IC for
driving the motors and actuators such as used in DVD
player and consists of two DC-DC Step Down
Converters. It is pretty fit for portable DVD player
application. Package material is Pb Free for
environmental protection.
FEATURE
z
4-channel BTL:
1) Two channels are voltage-type BTL
drivers for actuators of tracking and focus. Two
channels are voltage-type BTL driver for sled
and spindle motors. It is also built-in two DC-DC
converters.
2) Wide dynamic range for motor drive
[3.6V (typ.) when Vcc= 5V, at RL= 20Ω¸ load].
z
2 DC-DC Step down converters:
1) Efficiency up to 85%
2) Operation from 4.5~16V
3) Typical frequency operation to 240KHz.
4) Over voltage protection built-in.
5) Over current protection built-in.
z
Common circuit
1) Level shift circuit built-in.
2) Thermal shut down circuit built-in.
3) Mute mode built-in for motor drive. EN1, EN2 mode control for two set of DC-DC
step down converters.
APPLICATIONS
● BTL driver for portable DVD player with DC-DC power management
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 1 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
BLOCK DIAGRAM AND PIN CONFIGURATION
PIN DESCRIPTION
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Pin Name
EN2
CT2
COMP2
SW2
IPK2
PVcc1
PVcc2
VOFC+
VOFCVcc1
VINFC
VINSL+
MGND
VOSL+
VOSLMGND
VOTK+
VOTKMGND
Description
Enable pin for buck converter 2
Timing capacitor input 2
Comparator inverting input 2
Switching output 2
Current sense 2
Vcc for step down converter 1
Vcc for step down converter 2
Focus driver output(+)
Focus driver output(-)
Vcc for power block of sled
Input for focus driver
Input for the sled driver
Ground for motor driver
Sled driver output(+)
Sled driver output(-)
Ground for motor driver
Tracking driver output(+)
Tracking driver output(-)
Ground for motor driver
Continue
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 2 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
Pin No
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Pin Name
VOSP+
VOSPVINSP
VINTK
Vcc2
PGND
PGND1
PGND2
IPK1
SW1
COMP1
CT1
EN1
MUTE
BIAS
Description
Spindle driver output(+)
Spindle driver output(-)
Input for spindle driver
Input for tracking driver
Vcc for power block of spindle, tracking and focus
Ground for analog ground
Ground for step down converter 1
Ground for step down converter 2
Current sense 1
Switching output 1
Comparator inverting input 1
Timing capacitor input 1
Enable pin for buck converter 1
Input for mute control
Input for reference voltage
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Characteristic
Symbol
Value
Unit
Supply Voltage 1 for driver
Vcc1
13.5
V
Supply Voltage 2 for driver
Vcc2
13.5
V
Supply voltage for converter
PVcc
17.6
V
Pd
2.2*
°C
Operating Temperature range
Topr
-40~+85
°C
Storage temperature range
Tstg
-55~+150**
°C
Power dissipation
* Power dissipation reduces 17.6mW/°C for operation above Ta=25°C
** 70mm×70mm×1.6mm glass epoxy board.
RECOMMENDED OPERATING CONDITIONS (Ta=25°C)
Characteristic
Symbol
Value
Unit
Power supply voltage
Vcc1
Vcc2
PVcc
4.3~13.2
4.3~Vcc1
4.5~16
V
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 3 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
ELECTRICAL CHARACTERISTICS (Unless otherwise specified: Ta=25°C, Vcc1=5V,
Vcc2=5V, PVcc=12V,BIAS=1.65V,RL=8Ω/10Ω/20Ω)
Characteristics
Symbol
Quiescent current
Icc
Standby current 1
Istb1
Standby current 2
Test conditions
Min
Typ
Max
Unit
19
mA
Mute=L,EN1=H,EN2=H
3
mA
Istb2
Mute=H,EN1=L,EN2=L
15
mA
Standby current 3
Istb3
Mute=L,EN1=L,EN2=L
Voltage for mute ON
Vston
Voltage for mute OFF
40
52
60
μA
0
0.5
V
Vstoff
2.0
5
V
Voltage for EN low
VENL
0
0.5
V
Voltage for EN high
VENH
2.0
5
V
±50
mV
Actuator drivers
Output offset voltage
Voo
Maximum output voltage
Vom
voltage gain
Gv
3.4
@10Ω load
VIN=BIAS+0.2Vpp
@1KHz
ac
21.5
23.5
V
25.5
dB
±100
mV
Sled motor driver
Output offset voltage
Voofsl
Maximum output voltage
Vomsl
Closed loop voltage gain
Gvsl
3.6
@20Ω load
VIN=BIAS+0.2Vpp
@1KHz
ac
18
20
V
22
dB
±50
mV
Spindle motor driver
Output offset voltage
Voofld
Maximum output voltage
Vomax
Voltage gain
Gain error by polarity
Gvld
ΔGvld
3.2
@8Ω load
VIN=BIAS+0.2Vpp
@1KHz
VIN=BIAS+0.2Vpp
@1KHz
V
ac
13.5
15.5
17.5
dB
ac
0
1
2
dB
Step down converter
Oscillator frequency
Fosc
Charge current
Discharge current
240
KHz
Ichg
24
μA
Idischg
144
μA
200
mV
1.25
V
Current limit sense voltage
Vipk
Comparator threshold voltage
Vth
Output source current
Output sink current
CT=68PF
Rsc=0.1
Isource
Vout=0V
180
mA
Isink
Vout=9V
120
mA
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 4 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
POWER DISSIPATION CURVE:
APPLICATION INFORMATION
1)The built-in thermal shutdown circuit mutes the output current of 4-channel BTL
when the chip temperature reaches 175°C (typ.). The hysteresis is set to 25°C (typ.), so the
circuit will start up again when the chip temperature falling to 150°C(typ.).
2) In case mute pin voltage is under 0.5V or NC, output current is muted (except two
DC-DC converter). Mute pin voltage should be more than 2.0V for normal application.
3) In case EN pin voltage is under 0.5V or NC, the converter circuit will stop operation.
EN pin voltage should be more than 2.0V for normal application.
4) Bias pin (pin 34) should be pulled up to more than 1.2V. In case the bias pin voltage
is pulled down below 0.9V (typ.),the output current of 4-channel BTL is muted.
5) Heat dissipation fins are attached to the GND on the inside of the package. Make
sure to connect them to the external GND.
6)DC-DC Step down converter: Please refer to application note.
7)Truth table of Mute,EN1,EN2.
Truth table (Ο: active
Mute
EN1
H
--H
--L
L
×:inactive
EN2
--H
L
--:don’t care)
Motor channel
Ο
--×
DC-DC ctrl 1
-Ο
-×
DC-DC ctrl 2
--Ο
×
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 5 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
APPLICATION CIRCUIT
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 6 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
CMD4510
Motor Driver for Portable DVD Player with DC-DC Step Down Converter
OUTLINE DRAWING
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 7 of 7
Rev 1.0 Mar. 28, 2006
Fax:886-3-3521052
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