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IP4001 5-CH MOTOR DRIVE IC
DESCRIPTIONS
The IP4001 is a monolithic integrated circuit, and suitable for 5-ch motor driver which drives focus actuator, tracking actuator, sled motor, spindle motor and Tray motor of CDP & V-CD system.
28SSOP H/S
FEATURES
- 1ch(forward-reverse) control DC motor driver - 4ch BTL(Balanced Transformerless) driver - Built-in TSD (Thermal shutdown) circuit - Built-in 5V regulator with an internal NPN TR - Built-in mute circuit - Built-in Tray motor speed control circuit - Wide operating supply voltage range: 6.5V~13.2V
ORDER INFORMATION
Device IP4001 IP4001TF Package 28SSOPH-375 28SSOPH-375 Operating Temp -35 OC ~ +85 OC -35 OC ~ +85 OC
BLOCK DIAGRAM
PGND2 28 DO427 D DO4+ 26 D
10K 10K
IN4 25
IN4A 24
REF 23
VCC2 22
(FIN)
VCC1 21
CTL 20
IN3 19
DO3+ 18 D
DO317 D
DO516 D
DO5+ 15 D
Level Shift
10K
Level Shift
10K
Level Shift MSC
TSD
SWITCH
REGULATOR
MUTE
IN1
IN2
10K
2.5V
BIAS
10K 3.3K 3.3K 20K 20K
Level Shift VCC2
10K
10K
Level Shift
D 1 DO1-
D 2 DO1+ 3 IN1 4 IN1A
PWR TR 5 N/C 6 REO 7 MUTE (FIN) 8 SGND 9 FWD 10 IN2
D 11 DO2+
D 12 DO213 PGND1 14 REV
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IP4001 5-CH MOTOR DRIVE IC
PIN CONNECTIONS
PGND2 DO427 28 DO4+ 26 IN4 25 IN4A 24 REF 23 VCC2 22 (FIN) VCC1 21 CTL 20 IN3 19 DO3+ 18 DO317 DO516 DO5+ 15
IP4001
1 DO1-
2 DO1+
3 IN1
4 IN1A
5 N/C
6 REO
7 MUTE (FIN)
8 SGND
9 FWD
10 IN2
11 DO2+
12
13
14
DO2- PGND1 REV
PIN DESCRIPTIONS
NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SYMBOL DO1DO1+ IN1 IN1A N/C REO MUTE SGND FWD IN2 DO2+ DO2PGND1 REV I/O O O I I O I I I O O I DESCRIPTION CH1 OUTPUT (-) CH1 OUTPUT (+) CH1 INPUT 1 CH1 INPUT 2 NO-CONNECTION REGULATOR OUTPUT MUTE INPUT SIGNAL GROUND CH5 INPUT 1 CH2 INPUT CH2 OUTPUT (+) CH2 OUTPUT (-) POWER GROUND 1 CH5 INPUT 2 NO 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SYMBOL DO5+ DO5DO3DO3+ IN3 CTL VCC1 VCC2 REF IN4A IN4 DO4+ DO4PGND2 I/O O O O O I I I I I I I O O DESCRIPTION CH5 OUTPUT (+) CH5 OUTPUT (-) CH3 OUTPUT (-) CH3 OUTPUT (+) CH3 INPUT CH5 MOTOR SPEED CONTROL SUPPLY VOLTAGE 1 (CH2,CH3,CH5) SUPPLY VOLTAGE 2 (CH1,CH4,SIGNAL,REG) CH BIAS INPUT CH4 INPUT 1 CH4 INPUT 2 CH4 OUTPUT (+) CH4 OUTPUT (-) POWER GROUND 2
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IP4001 5-CH MOTOR DRIVE IC
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTICS Maximum supply voltage Power dissipation Operating temperature Storage temperature Maximum output current SYMBOL Vccmax Pd Topr Tstg Iomax VALUE 15 2.3 * -35 ~ +85 -55 ~ 150 1 UNIT V W
O
C C
O
A
Note> 1. When mounted on 50mm X 50mm X 1mm PCB (Phenolic resin material). 2. Power dissipation reduces 18.4 mW/OC for using above Ta=25O C 3. Do not exceed Pd and SOA.
POWER DISSIPATION CURVE
Power Dissipation (W) 3 2 1
SOA
0
25
50
75
100
125
150
175
Ambient Temperature (C)
RECOMMENDED OPERATING CONDITIONS
CHARACTERISTICS Supply voltage 1 Supply voltage 2 SYMBOL Vcc1 Vcc2 VALUE 6.5 ~ 13.2 6.5 ~ 13.2 UNIT V V
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS
(Ta = 25O C, VCC1=VCC2=8V, RL=8ohm, unless otherwise specified.)
CHARACTERISTICS Quiescent circuit current Mute on current Mute on voltage Mute off voltage [ BTL DRIVE PART ] Output offset voltage Maximum output voltage Closed-loop voltage gain Ripple rejection ratio Slew rate [ REGULATOR PART ] Output voltage Load regulation 1 Load regulation 2 Line regulation [ TRAY DRIVE PART ] Input high level voltage Input high level voltage Output voltage Output voltage regulation Output offset voltage 1 Output offset voltage 2
SYMBOL Icc Imute Vmon Vmoff
CONDITIONS Pin7=GND -
MIN 2
TYP 10 2.5 -
MAX 5 0.5 -
UNIT mA mA V V
Voo Vom Avf RR SR
Vin=2.5V Vcc1=Vcc2=8V, 8ohm Vin=0.1Vrms, f=1Khz Vin=0.1Vrms, f=120Hz Vout=4Vp-p, square
-40 4 5 50 -
5 6.5 60 1.5
+40 8 -
mV V dB dB V/us
Vreg Vrl 1 Vrl 2 Vcc
IL=100mA IL=0~100mA IL=0~200mA Vcc=6.5V~12.5V, IL=100mA
4.7 -40 -70 -20
5 -
5.3 10 10 +60
V mV mV mV
Vih Vil Vo Vo Voo1 Voo2
Vcc=8V, RL=45ohm, Pin20=open Vcc=8V, RL=45ohm, Pin20=3.5V ~ 4.5V Pin9,Pin14=5V Pin9,Pin14=0V
2 2.5 0.6 -40 -40
3.1 1 -
0.5 3.8 1.4 +40 +40
V V V V mV mV
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IP4001 5-CH MOTOR DRIVE IC
APPLICATION SUMMARY
- Reference & all mute When you want to control output bias current of the IP4001, use pin #23 as follows
VCC2
Pin#23
All Output Driver Bias 23
Mute off on
Above1.0V Below 1.0V
Q1
30k
1V
Fig1. Reference & all mute function
As shown in figure 1, Pin#23 is a negative input of the comparator, and the other Input is the 1.0V reference. If the voltage of the pin#23 falls below 1.0V, TR Q1 will be turned on and the output bias current will be shut down
- Mute When you want to control output bias current of the IP4001, you can also use pin#7 as follows
VCC2
Pin#7 High Low
Mute off on
7
All Output Driver Bias
20k Q2 20k
Q3
As shown in figure 2, Pin#7 is a base input of the TR Q2. If the voltage of the pin#7 is low or open, TR Q2 will be turned off and TR Q3 will be turned on, so the bias current will be shut down by TR Q3. If the voltage of the pin#7 is high, the bias circuit operates normally.
Fig2. Mute function
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IP4001 5-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- Thermal shutdown The IP4001 has a thermal protection against the abnormal operation, and the detailed operation of the TSD circuit is as follows Temperature
VCC2
I
TSD
mute on off 25 O C
Above 175 O C Falls below 150 OC
All Output Driver Bias
Hysteresis
Q4 I
Hysteresis HYS
Fig3. Thermal shut down
As shown in figure 3, TSD circuit controls the base of the TR Q4. If the junction temperature rises above 175O C, TR Q4 will be turned on, and the bias current of the output drive circuit will be shut down (because of the negative temperature characteristic of the NPN transistor). And then temperature falls below 150 O C, TR Q4 will be turned off. (hysteresis temperature is about to 25 O C)
- BTL drive part (Focus, Tracking, Spindle, Sled drive part) BTL drive part is composed of V-I converter, level shifter and output power amp.
Level Shift
23
Ra
10.6k
2
11 26
-Va Pamp1
18
3 19
10 25
Iconv
10k
-Iconv +Iconv Pamp2
10.6k Va
1 17 12 27
4
24
Ra
Pref
Fig4. BTL drive part - V-I converter converts voltage of the input pin into current,
Iconv =
Vin - Vref 10k
*Vref = reference voltage (pin23)
* Vin = input voltage of the input pin (pin3, 10, 19, 25)
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IP4001 5-CH MOTOR DRIVE IC
The level shifter changes the direction of the current(Iconv) as the same amount, and then supply it to the power AMP. The resistor Ra(10.6K) converts current into voltage with the DC offset of Pref.
Vin- Vref +Pref 10k Vin- Vref - Va = -10.6K x +Pr ef 10k Va =10.6K x
when
Pref
=
VCC1 2
- Vbe
The power amp has unity gain. So the total differential voltage gain of the IP4001 is as follows,
Vin- Vref Vin- Vref +Pref] - [(-)10.6k x +Pref]} 10k 10k Gain= 20log Vin- Vref 10.6K = 20log 2 x 10K = 6.527dB {[10.6k x
If you want to reduce the total gain of the BTL drive part, use additional series resistor into the input pin(pin#3, 10,19,25) You can also increase or decrease the voltage gain of the CH1, CH4 using adjustable pin (pin#4, pin24) by inserting an external series resistor.
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IP4001 5-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- Tray motor drive part CH5 is a forward-reverse control DC motor driver and it is composed of logic control part, level shifter, and output power amp.
VCC1 Level Shift 50K
20
R1
Speed Control
15
R4
50K
R2 R5
16
R3
9
14
Switching Logic Pref
Fig5. Tray drive part The forward and reverse rotation is controlled by pin9(fwd), pin14(rev) and the amplitude of the output voltage is controlled by pin20(CTL). The output status due to the input conditions are as follows
INPUT FWD(PIN9) High High Low Low REV(PIN14) High Low High Low DO5+(PIN15) Vp High Low Vp
OUTPUT DO5-(PIN16) Vp Low High Vp STATUS Brake Forward Reverse Brake
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IP4001 5-CH MOTOR DRIVE IC
APPLICATION SUMMARY (Continued)
- Tray motor speed control The amplitude of the output voltage is controlled by pin20(CTL).
VCC VCC1
R
20
50k
Speed Control Level Shift
ZD
50k
Fig6. Tray motor speed control Normally, the differential output voltage is 3.1V when the pin20(CTL) is open. If you want to control differential output voltage of the tray drive part, insert external resistor R and zener diode ZD as shown in figure 6. Zener diode ZD is only needed when you want to obtain a precision output voltage, In other case you only insert an external resistor R.
- Regulator part IP4001 has a temperature independent voltage source internally. So in the figure 7, the reference voltage (2.5V) is generated by the internal circuit (bandgab reference).
VCC2
Because the power NPN TR Q5 is inserted internally, there is no need to attach an external active component. The output voltage of the regulator is Calculated as follows
2.5V
6
3.3K 3.3K
+ - 103
Vreo = (1+
3.3K ) x 2.5 = 5V 3.3K
And he capacitor 1uF is used as a ripple & noise eliminator and should have a good Temperature characteristics.
Internal circuit External circuit
Fig7. Regulator
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IP4001 5-CH MOTOR DRIVE IC
TEST CIRCUIT
DO1(-) DO1(+)
PGND2 DO4(-) DO4(+)
28
8
1 1
8 8 SW3
3 2 1
1
SW1
2
SW2
32
27
8 8
1 2 1
8
1
2
VCC
2
SW12
3
SW11
2 3
SW10
2
DI1
1
26
3
SW13
3
VCC
1
DI1A N/C
25
DI4
4 5
SW16
2 3
DI4A
24
5V Reg out 6 103
REO MUTE (FIN) SGND FWD DI2
REF VCC2
23
2.5V
22
7 8 9 10
1
SW18
20
3
(FIN) VCC1 CTL DI3 21 20 19
2
VCC
1
DO3(+) DO3(-) DO5(-)
SW14
2 3
1
DO2(+) DO2(-) PGND1
8
1 1
8 8 SW6
3 2 1
8 8
1 1
8
1
SW15
2 3
11
18
SW4
2 3
SW5
2
SW9
2 3
SW8
2 3
SW7
2
12
17
VCC 13 14
VCC
SW17
16
REV
DO5+
15
45
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IP4001 5-CH MOTOR DRIVE IC
TYPICAL APPLICATION CIRCUIT
DO1(-) DO1(+)
PGND2 DO4(-) DO4(+)
28
1
FOCUS ACTUATOR 2 3 4 5
27 TRACKING ACTUATOR 26
DI1 DI1A N/C
25 24
DI4 DI4A
5V Reg out 103
REO MUTE (FIN) SGND FWD DI2 DO2(+) DO2(-) PGND1
REF
23
6 7 8 9 10 11
VCC2 (FIN) VCC1 CTL DI3 DO3(+) DO3(-) DO5(-)
VCC
22 21 20 19 18
SPINDLE M MOTOR 12 13 14
M
SLED MOTOR
17 16
M
TRAY MOTOR
DO5(+)
Focus Spindle Sled Tracking Ref
Servo signal processor
REV Mute
15 Rev CTL
Fwd
Micro processor
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IP4001 5-CH MOTOR DRIVE IC
INTERNAL CIRCUIT
Pin no Pin name Internal circuit
1,2, 11,12, 15,16, 17,18, 26,27
DO1DO1+ DO2+ DO2DO5+ DO5DO3DO3+ DO5+ DO5-
2
11
1
12
18
26
15
17
27
16
PGND
13 28 13 28
3, 4, 10, 19, 23, 24, 25,
IN1 IN1A IN2 IN3 REF IN4A IN4
23
3
10
19 4
25 10k 24
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IP4001 5-CH MOTOR DRIVE IC
INTERNAL CIRCUIT (Continued)
Pin no Pin name Internal circuit
6
6
REO
3.3k
3.3k
20k
7
MUTE
7
20k
30k
30k
20k
20k 14
9,14
FWD REV
9 20k 20k 30k 30k
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IP4001 5-CH MOTOR DRIVE IC
INTERNAL CIRCUIT (Continued)
Pin no Pin name Internal circuit
50k
20
CTL
20
50k
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES
ICC (mA)
16 14 12 10 8 6 4 2 0 4 6
VCC vs ICC
VCC=variable Vin=Vref=2.5V RL=open Mute=high
8
10
12
14
VCC (V)
Imute (mA)
7
VCC vs Imute
6
5
VCC=variable Vin=Vref=2.5V RL=open Mute=low
4
3
2
1
0 4 6 8
VCC (V)
10
12
14
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Avf (dB)
8 7 6 5 4 3 2 1 0 4 6
VCC vs Avf
VCC=Variable Vref=2.5V Vin=0.1V rms RL=8.0 ohm Mute=high
8 10 12 14
VCC (V)
Vom (V)
10
VCC vs Vom
8
6
VCC=variable Vref=2.5V Vin=VCC RL=8.0 ohm Mute=high
4
2
0 4 6 8
VCC (V)
10
12
14
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Vcesat_upper (V)
3.0
IL vs Vcesat_upper
2.5
2.0
VCC=8.0V Vref=2.5V Mute=high Vin=VCC IL=variable
1.5
1.0
0.5
0.0 0 200 400 600 800 1000
IL (mA)
Vcesat_lower (V)
3.0
IL vs Vcesat_lower
2.5
2.0
VCC=8.0V Vref=2.5V Mute=high Vin=VCC IL=variable
1.5
1.0
0.5
0.0 0 200 400
IL (mA)
600
800
1000
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Vreg (V)
6
VCC vs Vreg
5
4
3
2
1
VCC=variable IL=100 mA
0 4 6 8
VCC (V)
10
12
14
Vreg (V)
5.4
IL vs Vreg
VCC=8 V IL=variable
5.2
5.0
4.8
4.6
0
50
100
150
200
250
300
IL (mA)
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
VO (V)
6
VCC vs Vo
5
4
VCC=Variable Vref=2.5V Mute=high Fwd=high Rev=low CTL=open
3
2
1 4 6 8 10 12 14
VCC (V)
Vo (V)
6
Vctl vs Vo
5
4
3
VCC=8.0V Vref=2.5V Mute=high Fwd=high Rev=low CTL=Variable
2
1
0 0 1 2 3 4 5 6 7 8
Vctl (V)
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Icc(mA)
12
Temperature vs Icc
10
8
6
4
2
VCC=8V Vin=Vref=2.5V RL=open Mute=high Temp=variable
-40 -20 0 20 40 60 80 100
0
Temperature (C)
Im (mA)
4.0
Temperature vs Im
3.5
3.0
2.5
2.0
1.5
VCC=8V Vin=Vref=2.5V RL=open Mute=low Temp=variable
-40 -20 0 20 40 60 80 100
1.0
Temperature (C)
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Avf (dB)
7
Temperature vs Avf
6
5
4
3
2
1
VCC=8V Vref=2.5V Vin=0.1Vrms f=1kHz RL=8 ohm Mute=high Temp=variable
-40 -20 0 20 40 60 80 100
0
Temperature (C)
Vom
5
Temperature vs Vom
4
3
2
1
VCC=8V Vref=2.5V RL=8 ohm Mute=high Temp=variable
-40 -20 0 20 40 60 80 100
0
Temperature (C)
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IP4001 5-CH MOTOR DRIVE IC
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Vo
3.5 3.0
Temperature vs Vo
2.5 2.0
1.5
1.0 0.5
VCC=8V Vref=2.5V RL=45 ohm Mute=high CTL=open Temp=variable
0.0 -40 -20 0 20 40 60 80 100
Temperature (C)
Vreg
5
Temperature vs Vreg
4
3
2
1
VCC=8V IL=100mA Temp=variable
-40 -20 0 20 40 60 80 100
0
Temperature (C)
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IP4001 5-CH MOTOR DRIVE IC
PACKAGE DIMENSION
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