AD6392 [ETC]
4-CH MOTOR DRIVE IC; 4 - CH电机驱动IC
| 型号： | AD6392 |
| 厂家： | 
ETC |
| 描述： | 4-CH MOTOR DRIVE IC |
| 文件： | 总22页 (文件大小：533K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AD6392
4-CH MOTOR DRIVE IC
DESCRIPTIONS
AD6392 is a 4-CH BTL driver suitable for driving mo-
tors and actuators in CD-P/VCD-P systems. Each
channel drivers except the spindle driver have an
internal primary filter and they can be directly con-
nected to the servo’s PWM output without any at-
tached external components.
FEATURES
ORDER INFORMATION
- 3-CH BTL driver compatible with PWM input
(PWM input is filtered by an internal primary filter,
so there is no need to attach external components)
- 1-CH BTL spindle driver with analog input
- Built-in TSD (thermal shut down) circuit.
- Built-in mute circuit.
Device
AD6392
AD6392
Package
Operating Temp
28SSOPH-375A -35OC ~ +85OC
28SSOPH-375B -35OC ~ +85OC
- Operating supply voltage (4.5V~13.2V).
BLOCK DIAGRAM
DO4R
26
VBINA
25
VBIN
23
VCC2
22
VCC1
21
PGND
28
DO4F
27
VSIN
24
PGND
IN3F
20
IN3R
19
RCIN3
18
DO3R
17
DO3F
16
MUTE
15
150K
100K
BIAS
INTERFACE
190K
LEVEL SHIFT
MUTE
TSD
INTERFACE
INTERFACE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DO1F
DO1R
RCIN1
IN1R
IN1F
REFI
REFO
PGND
SGND
IN2F
IN2R
RCIN2
DO2R DO2F
PGND1
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April. 2002 (Rev.0)
- 1 -
AD6392
4-CH MOTOR DRIVE IC
PIN CONNECTIONS
A D 6 3 9 2
PIN DESCRIPTIONS
NO SYMBOL I/O
DESCRIPTION
NO SYMBOL I/O
DESCRIPTION
Mute
DO1F
15
16
17
MUTE
DO3F
DO3R
I
1
O
CH1 forward output
O
O
CH3 forward output
CH3 reverse output
2
3
DO1R
RCIN1
O
I
CH1 reverse output
CH1 external
capacitor / resistor
CH3 external
capacitor / resistor
18
RCIN3
I
4
5
6
IN1R
IN1F
REFI
I
I
I
CH1 reverse input
CH1 forward input
Reference input
Reference output
19
20
21
22
IN3R
IN3F
I
I
CH3 reverse input
CH3 forward input
Power supple voltage 1
Power supple voltage 2
CH4 bias input
VCC1
VCC2
-
-
7
REFO
O
8
9
SGND
IN2F
-
I
I
Signal ground
23
VBIN
I
CH2 forward input
CH2 reverse input
24
25
VSIN
I
I
CH4 input
10
IN2R
CH4 bias input
(with internal resistor)
VBINA
CH2 external
capacitor / resistor
11
RCIN2
I
26
27
28
DO4R
DO4F
O
O
-
CH4 reverse output
CH4 forward output
Power ground 2
12
13
14
DO2R
DO2F
O
O
-
CH2 reverse output
CH2 forward output
Power ground 1
PGND2
PGND1
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April. 2002 (Rev.0)
- 2 -
AD6392
4-CH MOTOR DRIVE IC
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS
Maximum supply voltage
Power dissipation 1 (375A_Type)
Power dissipation 2 (375B_Type)
Operating temperature
SYMBOL
VCCmax
Pd 1
VALUE
18
UNIT
V
1.7 *
W
Pd 2
2.3 *
W
Topr
-35 ~ +85
-55 ~ 150
OC
OC
Storage temperature
Tstg
Note>
1. When mounted on 100mm X 100mm X 1mm PCB (Phenolic resin material).
2. Power dissipation reduces 13.6 mW/OC(375A_Type), 18.4 mW/OC(375B_Type), for using above Ta=25OC
3. Do not exceed Pd and SOA.
POWER DISSIPATION CURVE
3
375B_Type
375A_Type
2
1
0
25
50
75
100
125
150
175
Ambient Temperature (°C)
RECOMMENDED OPERATING CONDITIONS
CHARACTERISTICS
SYMBOL
VCC1,2
VALUE
UNIT
Operating Supply Voltage
4.5~ 13.2
V
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April. 2002 (Rev.0)
- 3 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS
(VCC1=VCC2=8V, f = 1kHz, RL = 8ohm, Ta = 25OC unless otherwise specified.)
CHARACTERISTICS
Quiescent Circuit Current
PREFO Pin Voltage
PREFO Pin Voltage Variance
All Mute On Voltage
All Mute Off Voltage
Mute On Voltage
SYMBOL
Icc
CONDITIONS
No Load
MIN
-
TYP
MAX
-
UNIT
mA
V
6.5
Vbias
Vbias
Vamon
Vamoff
Vmon
Vmoff
Imute
-
3.40
-30
-
3.70
4.00
30
0.5
-
1mA Source, sink
Pin6=variation
Pin6=variation
Pin15=variation
Pin15=variation
-
-
-
-
-
-
-
mV
V
2.0
-
V
0.5
-
V
Mute Off Voltage
2.0
-
V
Mute on current
3
mA
[ DRIVE PART (CH1,CH2,CH3) ]
Input High Level Voltage
Input Low Level Voltage
Input High Level Current
Input Low Level Current
Output Offset Voltage 1,2,3
Output High Level Voltage
Output Low Level Voltage
Constant Current
Vih
Vil
-
-
2.4
-
-
-
0.5
150
-
V
V
-
50
-
lih
Vin = 5V
Vin = 5V
100
0
uA
uA
mV
V
lil
Voo
Vohd
Vold
Iconst
C
-
-40
5.2
-
-
+40
-
FWD = 5V, REV = 0V
5.8
1.1
22
24
0.08
0.55
-
FWD = 0V, REV = 5V
1.6
30
-
V
-
14
-
uA
pF
us
us
us
%
Internal integral Capacitance
Current Pulse rise time 1
Current Pulse fall time 2
Current Pulse time differential
Drive Linearity
-
At startup
tr
-
1
tf
At shutdown
-
1
tr-f
-
-160
90
-
160
110
-
LIN
RR
Vin = Vref±0.5, 1, 1.5V*1
Vin = 100mVrms, 100Hz
100
70
Ripple Rejection
dB
*1. If Vo = Vo1 when Vin = Vref±0.5V, Vo = Vo2 when Vin = Vref±1.0V, and Vo = V3
when Vin = Vref±1.5V, then Lin = (Vo3/Vo2)(Vo2/Vo1)X100%
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April. 2002 (Rev.0)
- 4 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS
(VCC1=VCC2=8V, f = 1kHz, RL = 8ohm, Ta = 25OC unless otherwise specified.)
[ DRIVE PART (CH4) ]
Input Bias Current
lb
-
-
1.6
5.2
-
-
-
300
6.4
-
nA
V
Common mode input range
Maximum Output Voltage High
Maximum Output Voltage Low
Voltage Gain
Vicm
Vohs
Vols
Gvc
Voos
SR
-
-
5.8
1.1
10.5
0
V
-
1.6
13
60
-
V
-
8
dB
mV
V/us
dB
Output offset voltage 4
Slew Rate
-
-60
-
-
2
Ripple Rejection Ratio
RRs
Vin = 100mVrms, 100Hz
-
70
-
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April. 2002 (Rev.0)
- 5 -
AD6392
4-CH MOTOR DRIVE IC
APPLICATION SUMMARY
- Mute function through power reference or signal reference pins
Muting all channel drivers can be obtained through power reference or signal reference pins. Fig.1 shows
the simplified schematic diagram for power/signal reference mute.
Fig. 1 Power reference, Signal reference & all mute function
As it can be seen in Fig. 1, pin6, pin23 and pin25 are connected
Pin6, Pin23, Pin25
Mute
to the positive input terminals of comparators, and the internal
1.0V reference is connected to the negative input terminals.
Thus, if the voltage applied to each pins falls below 1.0V, Q1
and Q2 become on and hence the bias currents for all channel
drivers become to be shut down. Thus all mute function can be
carried out.
Above 1.0V
Below 1.0V
off
on
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April. 2002 (Rev.0)
- 6 -
AD6392
4-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- Mute function through MUTE pin
Mute function is also performed at MUTE pin (pin15). The logic is as followers:
Pin15
Mute
High
Low
off
on
As it can be seen in Fig. 2, If the voltage of the pin15
become low (below 0.5V) or open, Q3 becomes off and
Q4 on, and hence the bias currents for all channel
drivers are shut down and muted. If the voltage of the
pin15 become high (above 2.0V), the channel drivers
operate normally.
Fig. 2 Mute function
- Thermal shutdown (TSD)
The AD6392 has a thermal protection against the abnormal high temperature operation to protect the chip.
Temperature
mute
Above 175 OC
on
off
Falls below 150 OC
Hysteresis
25 OC
Q5 is biased through the resistor string from the
internal bandgap reference voltage so that it
remains in off state at the ranges of the normal
operating temperatures. If the junction tempera-
ture rises above 175OC, Q5 turns into on state
and hence Q7 turns on, and all channel drivers
are muted as the bias currents are shut down.
When the junction temperature falls below 150
OC, Q5 and Q7 are turned off and the drivers
operate normally. The hysteresis temperature is,
thus, 25 OC
Fig. 3 Thermal shut down
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April. 2002 (Rev.0)
- 7 -
AD6392
4-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- CH1,CH2 and CH3 Drive Parts (Focus, Tracking , Sled Drivers)
CH1, CH2 and CH3 drive parts are composed of internal filter, V-I converter and output power amplifiers.
Internal filter
V-I converter
Output Power AMP
Fig. 4 CH1, CH2 and CH3 drive parts
- Internal primary filter
Internal primary filter is composed of sourcing/sinking current source of 22uA and forward/reverse
controlled switches. It converts “FWD/REV” digital signals to analog signal as shown in Fig. 5.
Fig. 5 Output signal waveforms of the primary filter
- V-I converter
V-I converter converts filtered analog voltage signal to positive or negative steering current signals and
delivers them to output power amplifiers.
- Output power amplifier
Output power amplifiers with a unity feedback configuration re-convert the current outputs of V-I
converters to differential output voltage to drive motors in BTL mode.
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April. 2002 (Rev.0)
- 8 -
AD6392
4-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
Input waveform (digital servo output).
(Pin4,5,9,10,19,20)
Output waveform at internal filter(RCIN).
(Pin3,11,18)
Final output waveform.
(Pin1,2,12,13,26,27)
Fig. 6 Operation waveforms of CH1, CH2 and CH3 drive parts
- Operation principle
If FWD is high and REV is low, then SW_FWD and SW_REV become on and off, respectively.
This causes the internal capacitor to be charged with sourcing current of 22 uA and consequently the
voltage of the filter output (RCIN) increases with the internal time constant of 2.4usec (time constant =
R*C=24 pF * 100 Kohm =2.4usec). Then the output current of V-I converter is given by
VRCIN
di=
100K
The output voltages of power amplifiers are, then, given as:
DOF = Pref
DOR = Pref
RCIN
RCIN
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April. 2002 (Rev.0)
- 9 -
AD6392
4-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- CH4 spindle drive part
CH4 drive part is composed V-I converter and output power amplifiers.
V-I converter
Output Power AMP
Fig. 7 CH4 spindle drive part
- The V-I converter converts the input voltage applied to pin24 into a incremental output current given
by
* Vin = input voltage of pin24
*Vref = reference voltage (pin23 or pin25)
Vin - Vref
100K
Vin
di =
=
Vin = Vin - Vref
100K
- These sourcing and sinking output current from V-I converter are delivered to output power amplifiers,
where they are appeared as differential output voltages given as:
DOF = Pref
DOR = Pref
di*170K
di*170K
- The differential voltage gain is, then, calculated as follows:
Vout = DOFDOR = 2*di *170K
Vout
Vin
2*170K
100K
Avf = 20log
= 20log
= 10.6dB
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April. 2002 (Rev.0)
- 10 -
AD6392
4-CH MOTOR DRIVE IC
TEST CIRCUIT
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April. 2002 (Rev.0)
- 11 -
AD6392
4-CH MOTOR DRIVE IC
TYPICAL APPLICATION CIRCUIT
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April. 2002 (Rev.0)
- 12 -
AD6392
4-CH MOTOR DRIVE IC
INTERNAL CIRCUIT
Pin no
Pin name
Internal circuit
DO1F,
DO1R,
DO2R,
DO2F,
DO3F,
DO3R,
DO4R,
DO4F
1,2,
12,13,
16,17,
26,27
3,
11,
18
RCIN1,
RCIN2,
RCIN3
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April. 2002 (Rev.0)
- 13 -
AD6392
4-CH MOTOR DRIVE IC
INTERNAL CIRCUIT (Continued)
Pin no
Pin name
Internal circuit
IN1R,
IN1F,
IN2F,
IN2R,
IN3R,
IN3F
4,5,
9,10,
19,20
6
PREFI
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April. 2002 (Rev.0)
- 14 -
AD6392
4-CH MOTOR DRIVE IC
INTERNAL CIRCUIT (Continued)
Pin no
Pin name
Internal circuit
15
MUTE
22
Vcc2
23,
24,
25
23
25
24
VBIN,
VSIN,
VBINA
150k
100k
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April. 2002 (Rev.0)
- 15 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES
Vin vs Vout (CH4)
Vout (V)
6
RL=25 ohm
RL=8 ohm
5
4
3
2
1
0
RL=4 ohm
VCC=8.0V
Vref=2.5V
Vin=sweep
RL=Change
Mute=high
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Vin (V)
Vout (V)
6
Vin vs Vout (CH1,2,3,)
RL=25 ohm
RL=8 ohm
RL=4 ohm
5
4
3
2
1
VCC=8.0V
Vref=2.5V
VRCIN=sweep
RL=Change
Mute=high
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Vin (V)
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April. 2002 (Rev.0)
- 16 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Vcc vs Vout (CH1,2,3,)
Vout (V)
7
6
5
4
3
2
1
0
RL=open
RL=8 ohm
VCC=Sweep
Vref=2.5V
FWD=Low
REV=High
RL=Change
Mute=high
0
2
4
8
10
12
14
16
6Vcc (V)
ICC (mA)
Vcc vs ICC
10
9
8
7
6
5
4
VCC=Sweep
Vref=2.5V
FWD=open
REV=open
RL=open
Mute=high
4
6
8
10
12
14
16
Vcc (V)
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April. 2002 (Rev.0)
- 17 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Imute (mA)
2.2
Vcc vs Imute
2.1
2.0
1.9
1.8
1.7
VCC=Sweep
Vref=2.5V
FWD=open
REV=open
RL=open
Mute=Low
1.6
4
6
8
10
12
14
16
Vcc (V)
Duty vs Vout
Vout (V)
3.0
VCC=8.0V
Vref=2.5V
FWD=Low
REV=pulse
(0V,5V,50kHz)
RL=open
2.5
2.0
1.5
1.0
0.5
0.0
Mute=High
0
10
20
30
40
50
Duty (%)
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April. 2002 (Rev.0)
- 18 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Avf (dB)
12
Vcc vs Avf
11
10
9
VCC=8.0V
Vref=2.5V
8
Vin=0.2Vrms, 1KHz
RL=8 ohm
Mute=High
7
6
4
6
8
10
12
14
16
Vcc (V)
Temp vs Icc
Icc (mA)
8
7
6
5
4
3
2
1
0
VCC=8.0V
Temp=Sweep
Vref=2.5V
RL=8 ohm
Mute=High
-40
-20
0
20
40
60
80
100
Temperature
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April. 2002 (Rev.0)
- 19 -
AD6392
4-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Icc (mA)
3.0
Temp vs Imute
2.5
2.0
1.5
1.0
0.5
0.0
VCC=8.0V
Temp=Sweep
Vref=2.5V
RL=8 ohm
Mute=Low
-40
-20
0
20
40
60
80
100
Temperature
Temp vs Avf
Avf (dB)
12.0
11.5
11.0
10.5
10.0
9.5
VCC=8.0V
Temp=Sweep
Vref=2.5V
9.0
RL=8 ohm
Mute=High
8.5
8.0
-40
-20
0
20
40
60
80
100
Temperature
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April. 2002 (Rev.0)
- 20 -
AD6392
4-CH MOTOR DRIVE IC
[ 28SSOPH_375A_Type ]
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April. 2002 (Rev.0)
- 21 -
AD6392
4-CH MOTOR DRIVE IC
PACKAGE DIMENSION
[ 28SSOPH_375B_Type ]
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April. 2002 (Rev.0)
- 22 -
相关型号：
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IC ANALOG TRIGONOMETRIC FUNCTIONS, 1.5 MHz BAND WIDTH, UUC16, DIE-16, Analog Computational Function
ADI
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