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UTC MM1538
LINEAR INTEGRATED CIRCUIT
4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS
DESCRIPTION
The UTC MM1538 contains a 4ch H bridge driver and DC-DC converter control circuit on one chip, and was developed for use in portable CD players.
FEATURES
*Built-in 4ch H bridge driver, and PWM control of load drive voltage is made possible by external components. *DC-DC converter control circuit on chip. *With reset output inversion output pin. *Empty detection level can be switched between rechargeable battery and dry battery. *Constant current charging; current value can be varied using external resistor. *Built-in power transistor for charging. *Built-in independent thermal shutdown circuit.
QFP-44-0.8
APPLICATIONS
*Portable CD radio cassette recorders
PIN CONFIGURATION
RCHG OUT1R OUT1F OUT2R OUT2F 33 32 31 30 29 POW GND 28 OUT3F OUT3R OUT4F OUT4R BRAKE1 27 26 25 24 23
AMUTE 34
22
IN1
EMP 35
21 MUTE2
HVcc 36
20 IN2
PSW 37
19
MUTE34
CLK 38
18
IN4
START 39 OFF 40
UTC MM1538
17
IN3
16 Vref 15 VSYS2 14
CHGVcc 41
SEL 42
OP+
PREGND 43
13 OPOUT
PWMFIL 44
12
VSYS1
1 BSEN
2 BATT
3
4
5 SW
6 EO
7 EI
8 SPRT
9 CT
10 N.C.
11 OP-
RESET DEAD
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UNISONIC TECHNOLOGIES CO., LTD.
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UTC MM1538
PIN DESCRIPTION
1 BSEN Input
LINEAR INTEGRATED CIRCUIT
FUNCTION
Battery Voltage Monitor
PIN PIN NAME INPUT/OUTPUT NO.
INTERMAL EQUIVALENT CIRCUIT
1
71k 10.5k 14.85k 16.5k 20 k
2 3
BATT RESET
Input Output
Battery Power Supply Input Reset Detect Output
3
Power Supply
VSYS1 90k
4
DEAD
Input
DEAD Time Setting
13k
4
49k 30.8k
5
SW
Output
Transistor Drive For Voltage Multiplier
BATT
5
150 6k
6
EO
Output
Error Amplifier Output
VSYS1
6
7
EI
Input
Error Amplifier Input
7
VSYS1 35k 21.6k
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8 SPRT Output
LINEAR INTEGRATED CIRCUIT
FUNCTION
Short Circuit Protection Setting
PIN PIN NAME INPUT/OUTPUT NO.
INTERMAL EQUIVALENT CIRCUIT
VSYS1
8
220k
9
CT
Output
Triangular-Wave Output
VSYS1
BATT 2k
9
420k 10k
10 11 14
N.C. OPOP+
Input
Op Amp Negative Input Op Amp Positive Input
14
11
12 13
VSYS1 OPOUT
Input Output
Control Circuit Power Supply Input Op Amp Output
Control Circuit Power Supply
VSYS1
13
15 16
VSYS2 Vref
Input Input
Driver Pre-step Power Supply Reference Voltage Input
Pre-Drive Power Supply
x4 16
24k 50k 200
17 18 20 22
IN3 IN4 IN2 IN1
Input
ch3 Control Signal Input ch4 Control Signal Input ch2 Control Signal Input ch1 Control Signal Input
17 18 20 22
11k
20PIN=7.5k
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19 21 23 MUTE34 MUTE2 BRAKE1 Input
LINEAR INTEGRATED CIRCUIT
FUNCTION
Ch3 and 4 Mute Ch2 Mute Ch1 Brake
PIN PIN NAME INPUT/OUTPUT NO.
INTERMAL EQUIVALENT CIRCUIT
19 21 23
68k 68k
24 25 26 27 29 30 31 32 28 36
OUT4R OUT4F OUT3R OUT3F OUT2F OUT2R OUT1F OUT1R POWGND HVcc
Output
Input
Ch4 Negative Output Ch4 Positive Output Ch3 Negative Output Ch3 Positive Output Ch2 Positive Output Ch2 Negative Output Ch1 Positive Output Ch1 Negative Output Power Block Power Supply Ground H-Bridge Power Supply Input
36
24 26 30 32
25 27 29 31
28
33
RCHG
Input
Charge Current Setting
33
950
34
AMUTE
Output
Reset Invert Output
BATT
34
95k
35
EMP
Output
Empty Detect Output
35
37
PSW
Output
PWM Transistor Drive
BATT
37
50
38
CLK
Input
External Clock Synchronizing Input
VSYS1 2k
38
50k 100k
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39 START Input
LINEAR INTEGRATED CIRCUIT
FUNCTION
Voltage Multiplier DC-DC Converter Start
PIN PIN NAME INPUT/OUTPUT NO.
INTERMAL EQUIVALENT CIRCUIT
390k BATT
39
200k
40
OFF
Input
Voltage Multiplier DC-DC Converter OFF
VSYS1 180k
40
27k
41 42
CHGVcc SEL
Input Input/Output
Charging Circuit Power Supply Input Empty Detect Level Switch
Charging Circuit Power Supply
BATT 200k 130k
42
15k
43 44
PREGND PWMFIL Input
Pre Section Power Supply Ground PWM Phase Compensation
Pre Section Power Supply Ground
VSYS1 2k
44
2k
*The positive and negative outputs are the polarity with respect to the input
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BLOCK DIAGRAM
RCHG 33 OUTIR 32
LINEAR INTEGRATED CIRCUIT
OUT1F 31 OUT2R 30 OUT2F POWGND OUT3F 29 28 27 OUT3R 26 OUT4F 25 OUT4R 24 BRAKE1 23
BRAKE1
AMUTE 34 MUTE2 BTL BTL TSD PSW 37 MAXIMUM DETECTION CLK 38 CLK
+-
22 IN1
EMP 35
21 MUTE2
HVcc 36
BTL
BTL V / I V / I V / I
20 IN2
+
MUTE34
CONTROL CIRCUIT POWER SUPPLY
19 MUTE34
+
18 IN4
START 39 POWER OFF STARTER
+
17 IN3
OFF 40
V / I
+
16 Vref
OVER-VOLTAGE
CHGVcc 41
TSD
TRIANGLE WAVE
PRE-DRIVER POWER SUPPLY
15 VSYS2
SEL 42
+ -
14 OP+
++ POWER UNIT POWER SUPPLY
+-
PWMFIL 44
+-
1 BSEN
2 BATT
3 RESET
4 DEAD
5 SW
6 EO
7 EI
8 SPRT
9 CT
10 N.C.
11 OP-
UTC
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-
PREGND
43
+ -
+
13 OPOUT
12 VSYS1
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PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL RATINGS UNIT
V mA mW C C
ABSOLUTE MAXIMUM RATINGS (Ta=25C )
Supply Voltage Vcc *1 13.5 Driver Output Current Io 500 Power Dissipation PD 625 Operating Temperature TOPR -30~+85 Storage Temperature TSTG -55~+150 *1: Vcc shows input voltage of VSYS1,VSYS2, HVcc, BATT,and CHGVcc.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Control Circuit Power Supply Voltage Pre-Driver Circuit Power Supply Voltage H-Bridge Power Supply Voltage Power Supply Voltage Charging circuit Power supply Voltage Operating Temperature
SYMBOL
VSYS1 VSYS2 HVcc BATT CHGVcc Ta
MIN
2.7 2.7 1.5 3.0 -10
TYP
3.2 3.2 PWM 2.4 4.5 25
MAX
5.5 5.5 BATT 8.0 8.0 70
UNIT
V V V V V C
ELECTRICAL CHARACTERISTICS
(Ta=25C, BATT=2.4V,VSYS1=VSYS2=3.2V,Vref=1.6V,CHGVcc=0V,fCLK=88.2kHz, unless otherwise specified)
PARAMETER
Common Section BATT Stand-by Current BATT Supply Current (No load) VSYS1 Supply Current (No load) VSYS2 Supply Current (No load) CHGVcc Supply Current (No load) H-Bridge Driver Part Voltage Gain ch1,ch3.ch4 Voltage Gain ch2 Gain Error By Polarity Input pin resistance ch1,ch3,ch4 Input pin resistance ch2 Maximum Output Voltage Saturation Voltage (Lower) Saturation Voltage (Upper) Input Offset Voltage Output Offset Voltage ch1,ch3,ch4 Output Offset Voltage ch2 Dead Zone BRAKE1ON Threshold Voltage BRAKE1OFF Threshold Voltage MUTE2 ON Threshold Voltage H-Bridge Driver Part MUTE2 OFF Threshold Voltage MUTE34 ON Threshold Voltage MUTE34 OFF Threshold Voltage Vref ON Threshold Voltage Vref OFF Threshold Voltage
SYMBOL
IST IBAT ISYS1 ISYS2 ICGVCC GVC134 GVC2 GVC RIN134 RIN2 VOUT VsatL VsatU VOI VOO134 VOO2 VDB VBRON VBROFF VM2ON VM2OFF VM34ON VM34OFF VrefON VrefOFF
TEST CONDITIONS
BATT=9.0V, VSYS1=VSYS2=Vref=0V HVcc=0.45V, MUTE34=3.2V HVcc=0.45V, MUTE34=3.2V, EI=0V HVcc=0.45V, MUTE34=3.2V CHGVCC=4.5V, ROUT=OPEN
MIN
TYP
0 2.5 4.7 4.1 0.65
MAX
3 4.0 6.4 5.5 2.00 16 24.5 2 13 9
UNIT
A mA mA mA mA dB dB dB k k V mV mV mV mV mV mV V V V V V V V V
IN=1.7V and 1.8V IN=1.7V and 1.8V RL=8,HVcc=BATT=4.0V, IN=0-3.2V Io=-300mA, IN=0 and 3.2V Io=-300mA, IN=0 and 3.2V Vref=IN=1.6V Vref=IN=1.6V IN1=1.8V IN1=1.8V IN2=1.8V IN2=1.8V IN3=IN4=1.8V IN3=IN4=1.8V IN1=IN2=IN3=IN4=1.8V IN1=IN2=IN3=IN4=1.8V
12 21.5 -2 9 6 1.9
14 23.5 0 11 7.5 2.1 240 240 0 0 0 0
-8 -50 -130 -10 2.0 2.0
400 400 8 50 130 10 0.8
0.8 0.8 2.0 1.2 0.8
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PARAMETER
BRAKE1 Brake Current PWM Power Supply Driving PSW Sink Current HVcc Level Shift Voltage HVcc Leak Current PWM Amp Transfer Gain DC-DC Converter Error Amp VSYS1 Threshold Voltage EO Pin Output Voltage "H" EO Pin Output Voltage "L" Short Circuit Protection SPRT Pin Voltage EO=H SPRT Pin Current1 OFF=L SPRT Pin Current2 SPRT Pin Current3 Over-Voltage SPRT Pin Impedance SPRT Pin Threshold Voltage Over-Voltage Protection Detect Transistor Driving SW Pin Output Voltage1 "H" SW Pin Output Voltage2 "H" SW Pin Output Voltage2 "L" SW Pin Oscillating Frequency1 SW Pin Oscillating Frequency2 SW Pin Oscillating Frequency3 SW Pin Minimum Pulse Width Pulse Duty Start Max. Pulse Duty At Self-Running Max. Pulse Duty At CLK Synchronization Interface OFF Pin Threshold Voltage OFF Pin Bias Current START Pin ON Threshold Voltage START Pin OFF Threshold Voltage START Pin Bias Current CLK Pin Threshold Voltage "H" CLK Pin Threshold Voltage "L" CLK Pin Bias Current Dead Time DEAD Pin Impedance DEAD Pin Output Voltage Starter Circuit
LINEAR INTEGRATED CIRCUIT
SYMBOL
IBRAKE1 IPSW VSHIF IHLK GPWM
TEST CONDITIONS
Current difference between BRAKE pin "H" time and "L" time. IN1=2.1V IN1=1.8V, HVcc-OUT1F HVcc=9.0V, VSYS1=VSYS2=BATT=0V IN1=1.8V, HVcc=1.2 ~ 1.4V
MIN
4
TYP
7
MAX
10
UNIT
mA
10 0.35
13 0.45 0 1/50
17 0.55 5 1/40
mA V A 1/k
1/60
VS1TH VEOH VEOL VSPR ISPR1 ISPR2 ISPR3 RSPR VSPTH VHVPR
EI=0.7V, Io=-100A EI=1.3V, Io=100A EI=1.3V EI=0.7V EI=1.3V, OFF=0V EI=1.3V, BATT=9.5V EI=0.7V, CT=0V BSEN Pin Voltage BATT=CT=1.5V, VSYS1=VSYS2=0V, Io=-2mA Starting Time CT=0V, Io=-10mA, EI=0.7V, SPRT=0V CT=2.0V, Io=10mA CT=470pF, VSYS1=VSYS2=0V Starting Time CT=470pF, CLK=0V CT=470pF CT=470pF, EO=0.5V0.7V Sweep CT=470pF, VSYS1=VSYS2=0V CT=470pF, EI=0.7V, CLK=0V CT=470pF, EI=0.7V
3.05 1.4
3.20 1.6
3.35 0.3
V V V V A A A k V V V V
6 12 12 175 1.10 8.0 0.78 1.00
0 10 20 20 220 1.20 8.4 0.98 1.50 0.30 80 70 88.2
0.1 16 32 32 265 1.30 9.0 1.13
VSW1H VSW2H VSW2L fSW1 fSW2 fSW3 TSWmin DSW1 DSW2 DSW3
65 60 0.01 40 70 65
0.45 95 82 0.60
V kHz kHz kHz s % % %
50 80 75
60 90 85
VOFTH IOFF VSTATH1 VSTATH2 ISTART VCLKTHH VCLKTHL ICLK RDEAD VDEAD
EI=1.3V OFF=0V VSYS1=VSYS2=0V, CT=2.0V VSYS1=VSYS2=0V, CT=2.0V START=0V 75 95
BATT0.3 10 13 2.0
VSYS1- V 2.0 115 A BATTV 1.0 V 30 19 0.8 10 A V V A k V
20 16
CLK=3.2V 52 0.78 65 0.88
78 0.98
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PARAMETER
Starter Switching Voltage Starter Switching Hysteresis Width Discharge Release Empty Detection EMP Detection Voltage 1 EMP Detection Voltage 2 EMP Detection Hysteresis Voltage 1 EMP Detection Hysteresis Voltage 2 EMP Pin Output Voltage EMP Pin Output Leak Current BSEN Pin Input Resistance BSEN Pin Leak Current SEL Pin Detection Voltage SEL Pin Detection Current Reset Circuit VSYS1 RESET Threshold Voltage Ratio RESET Detection Hysteresis Width RESET Pin Output Voltage RESET Pin PULL UP Resistance AMUTE Pin Output Voltage 1 AMUTE Pin Output Voltage 2 AMUTE Pin PULL DOWN Resistance Op Amp Input Bias Current Input Offset Voltage High Level Output Voltage Low level Output Voltage Output Drive Current (Source) Output Drive Current (Sink) Open Loop Voltage Gain Slew Rate Battery Charging Circuit RCHG Pin Bias Voltage RCHG Pin Output Resistance SEL Pin Leak Current 1 SEL Pin Leak Current 2 SEL Pin Saturation Voltage
LINEAR INTEGRATED CIRCUIT
SYMBOL
VSTNM VSNHS VDIS VEMPT1 VEMPT2 VEMHS1 VEMHS2 VEMP IEMPL RBSEN IBSENL VSELTH ISELT HSRT VRSTHS VRST RRST VAMT1 VAMT2 RAMT IBIAS VOIOP VOHOP VOLOP ISOU ISIN GVO SR VRCHG RRCHG ISELLK1 ISELLK2 VSELCG OP+=1.6V RL=OPEN RL=OPEN 50GND 50VSYS1 VIN=-75dBV, f=1kHz -5.5 2.8 0
TEST CONDITIONS
VSYS1=VSYS2=03.2V, START=0V START=0V
MIN
2.3 130 1.63 2.1 1.7 25 25
TYP
2.5 200 1.83 2.2 1.8 50 50
MAX
2.7 300 2.03 2.3 1.9 100 100 0.5 1.0 27 1.0
UNIT
V mV V V V mV mV V A k V V A % mV V k V V k nA mV V V mA mA dB V/s V k A A V
VSEL=0V ISEL=- 2A VSEL=0V ISEL=- 2A Io=1mA, BSEN=1V BSEN=2.4V VSEL=0V VSYS1=VSYS2=0V, BSEN=4.5V VSELTH=BATT-SEL, BSEN=2.0V
17 1.5 -2 85 25
23
Comparison with error amplifier threshold voltage Io=1mA, VSYS1=VSYS2=2.8V Io=-1mA, VSYS1=VSYS2=2.8V Io=-1mA, START=0V, VSYS1=VSYS2=0V
90 50 90
95 100 0.5 108 BATT BATT
72 BATT -0.4 BATT -0.4 77
95
113
300 5.5 0.2 -3.0
0.4
-6.5 0.7 70 0.5 0.81 0.95
CHGVcc=4.5V, RCHG=1.8k. CHGVcc=4.5V, RCHG=0.5 and 0.6V CHGVcc=4.5V, RCHG=OPEN, BATT=4.5V CHGVcc=0.6V, RCHG=1.8k, BATT=4.5V CHGVcc=4.5V, Io=300mA, RCHG=0
0.71 0.75
0.91 1.20 1.0 1.0
0.45
1.00
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MEASURING CIRCUIT
1.8k a b SW20 A A V V
51k
LINEAR INTEGRATED CIRCUIT
a b SW19 V b SW18 a B b a SW17
V V a SW21 + 47 A 33 47 A V a A A a SW26 a 41 CHGVcc 42 SEL b V Va A 10p SW1 a + A SW2 a A b V a A V SW27 43 PREGND
OPOUT VSYS2
V
POWGND
BRAKE1
OUTIR
OUT2R
OUT3R
RCHG
OUT4R
OUT2F
OUT1F
OUT3F
OUT4F
a b
SW23
34 AMUTE
IN1 22
b 35 EMP
MUTE2
21 a V
36 HVcc
IN2
20
37 PSW SW24
MUTE34 19
b a SW14 b a SW13 V b A 1k V SW12 a + V
38 CLK
IN4
18
b SW25 39 START
UTC MM1538
IN3
17
40 OFF
Vref
16
15
a
OP+
14
13
10
RESET
44 PWMFIL
BATT
VSYS1 12 DEAD SPRT N.C EO OPSW EI Ct
b SW28 100k 2200p
BSEN
a b V
A
SW11 50
1
2 A
3
4
5 SW5 a SW4 V b
6 b
7 SW6 a
8
9
10
11
SW10
d c 20k
100k
10k
SW9 SW8 b b 470p V aV
ab 470 +
SW3 b
a
frequency
a V
SW7 b A
a
1M
100
V
10k
V
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A
A
A
SW15
A
SW16
V
V A A A
b c a b R SW22 33 32 31 30 29 28 27 26 25 24 23 a F
A
10
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ITEM
LINEAR INTEGRATED CIRCUIT
1
a a -
SWITCHING POSITION TABLE
4
a a a b b b b b b b
5
a a a b -
6
a a a a a a a a a a
SW NO. 7 8
a b b b b a a b a a a a b b b b b b b
22
a a a -
24
b a b b a
25
a a a a a a -
26
a -
BATT Stand-by Current BATT Supply Current (No load) VSYS1 Supply Current (No load) VSYS2 Supply Current (No load) CHGVcc Supply Current (No load) VSYS1 Threshold Voltage EO Pin Output Voltage "H" EO Pin Output Voltage "L" SPRT Pin Voltage SPRT Pin Current1 EO="H" SPRT Pin Current2 OFF="L" SPRT Pin Current3 Over-Voltage SPRT Pin Impedance SPRT Pin Threshold Voltage Over-Voltage Protection Detect SW Pin Output Voltage1"H" SW Pin Output Voltage2"H" SW Pin Output Voltage2"L" SW Pin Oscillating Frequency 1 SW Pin Oscillating Frequency 2 SW Pin Oscillating Frequency 3 SW Pin Minimum Pulse Width Pulse Duty Start Max Pulse Duty At Self-Running Max Pulse Duty At CLK Synchronization -: Turn off switch
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ITEM
LINEAR INTEGRATED CIRCUIT
2
b b b a -
3
b a -
4
a a a a a a -
6
a -
SW NO. 7 8
a a a a b b -
20
b b a
24
b b a -
25
a a a a a -a -
26
a a -
DEAD Pin Impedance DEAD Pin Output Voltage OFF Pin Threshold Voltage OFF Pin Bias Current START Pin ON Threshold Voltage START Pin OFF Threshold Voltage START Pin Bias Current CLK Pin Threshold Voltage "H" CLK Pin Threshold Voltage "L" CLK Pin Bias Current Starter Switching Voltage Starter Switching Hysteresis Width Discharge Release Voltage VSYS1 Pin RESET Threshold Voltage Ratio RESET Detection Hysteresis Width RESET Pin Output Voltage RESET Pin PULL UP Resistance AMUTE Pin Output Voltage 1 AMUTE Pin Output Voltage 2 AMUTE Pin PULL DOWN Resistance -: Turn off switch
ITEM
EMP Detection Voltage 1 EMP Detection Voltage 2 EMP Detection Hysteresis Voltage 1 EMP Detection Hysteresis Voltage 2 EMP Pin Output Voltage EMP Pin Output Leak Current BSEN Pin Input Resistance BSEN Pin Leak Current SEL Pin Detection Voltage SEL Pin Detection Current Input Bias Current Input Offset Voltage "H" Level Output Voltage "L" Level Output Voltage Output Drive Current (Source) Output Drive Current (Sink) Open Loop Voltage Gain Slew Rate -: Turn off switch
1
a a a a a a a a a a -
9
a b a -
10
a d c c d d b d
SW NO. 11
b a -
12
a a
21
a a a a b c a a -
27
a b a b a a b -
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ITEM
Voltage Gain
LINEAR INTEGRATED CIRCUIT
13
Ch1R Ch2R Ch3R Ch4R Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1R Ch2R Ch3R Ch4R Ch1F Ch1R Ch2F Ch2R Ch3F Ch3R Ch4F Ch4R Ch1F Ch1R Ch2F Ch2R Ch3F Ch3R Ch4F Ch4R Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 b b b b b b b b a b b -
14
b b b b b b b b a b b
15
b b b b b b b b a b b -
SW NO. 16
b b b b b b b b a b b -
17
b b b b b b b b b b b b b b b b a a a a a a a a b b b b b b b b
18
b b b b b b b b b b b b b b b b a a a a a a a b b b b b b b b
22
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Gain Error By Polarity
Input Pin resistance
Maximum Output Voltage
Saturation Voltage (Lower)
Saturation Voltage (Upper)
Input Offset Voltage
Output Offset Voltage
Dead Zone
-: Turn off switch
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ITEM
BRAKE1 ON Voltage BRAKE1 OFF Voltage MUTE2 ON Voltage MUTE2 OFF Voltage MUTE34 ON Voltage MUTE34 OFF Voltage Vref ON Voltage
LINEAR INTEGRATED CIRCUIT
13
Ch1 Ch1 Ch2 Ch2 Ch3 Ch4 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 Ch2 Ch3 Ch4 Ch1 b b b b -
14
b b b b -
15
b b b b -
16
b b b b b b b b
SW NO. 17
b b b b b b b b b b b b b b b b b b b b
18
b b b b b b b b b b b b b b b b b b b b
22
a a a a a a a a a a a a a a a a a a b a a
23
b a -
28
a b -
Vref OFF Voltage
BREAK1 Brake Current PWM Sink Current HVcc Level Shift Voltage HVcc Leak Current PWM Amp Transfer Gain
ITEM
CHGSET Pin Bias Voltage CHGSET Pin Output Resistance SEL Pin Leak Current 1 SEL Pin Leak Current 2 SEL Pin Saturation Voltage -: Turn off switch
SW NO. 19
a b a b
27
a a b
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Input voltage:VIN (mV)
LINEAR INTEGRATED CIRCUIT
SWITCHING POSITION TABLE
VO4
VO3
VIN1 VIN2 XC'
XC VO2
Dead Zone
VO1
VIN3 VIN4
Output Offset Voltage
Output Voltage:Vo (mV)
* Voltage Gain Gvc(+)=20 log Gvc(-)=20 log
VO1-VO2 VIN1-VIN2 VO3-VO4 VIN3-VIN4
* Gain Error By Polarity Gvc=Gvc (+)-Gvc (-) * Dead Zone VIN2*VO1 - VIN1*VO2 XC-XC'= VO1-VO2 VIN3*VO4 - VIN4*VO3 VO3-VO4
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APPLICATION CIRCUIT
M
LINEAR INTEGRATED CIRCUIT
M
SPINDLE FOCUS TRACKING
TRAVERSE
33
32
31
30
29
28
27
26
25
24
BRAKE1
OUT3R
OUT2R
OUT1F
OUT2F
OUTIR
OUT4R
1.8k RCHG
POWGND
OUT3F
OUT4F
23
BRAKE1
AMUTE 34 MUTE2 BTL BTL TSD MAXIMUM DETECTION CLK
+-
IN1 22 MUTE2 21 IN2 BTL BTL V / I V / I V / I POWER OFF STARTER V / I 20
+
EMP 35 HVcc 36
+ 0.1
33 47
47
37 CLK 38 START 39
MUTE34
CONTROL CIRCUIT POWER SUPPLY
PSW
MUTE34 19 IN4 18 IN3 17 Vref 16 VSYS2
+
+
0.1
OFF 100k 40 CHGVcc 41 SEL 42 PREGND 43 PWMFIL
100k
2200p
+
OVER-VOLTAGE
TSD
TRIANGLE WAVE
15
PRE-DRIVER POWER SUPPLY
OP+ 14 OPOUT 13 VSYS1 12
++ -
+-
44
-
10p
+
EI
DEAD
BSEN
RESET
SPRT
N.C.
EO
1
BATT
2
3
4
5
6
7
8
9
10
OP-
SW
CT
11 FILTER
VIN 47
+
0.1
DC-DC Converter application
8.2k VOUT
+
0.022
0.1
470p
100
* We shall not be liable for any trouble or damege caused by using this circuit. *In the evert a problem which may affect industrial property or any other rights of us or a third party is encountered during the use of information described in these circuit,Mitsumi Electric Co.,Ltd.shall not be liable for any such problem,nor grant a license therefor.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
-
+ -
+
+-
16
QW-R109-009,A
UTC MM1538
CIRCUIT OPERATION
1 H-bridge driver block
LINEAR INTEGRATED CIRCUIT
(1) Gain setting *The driver input resistance (ch 1,3 and 4) are 11k typ. ,ch2 is 7.5k typ. . Set the gain according to the following formula.
ch1 55k ch2 GV=20 log 11k+R ch3
R:Externally-connected input (db)
110k ch2 GV=20 log 7.5k+R (db)
*The driver output stage power supply is HVcc (36PIN), and the bridge circuit power supply is VSYS2 (15PIN). Connect a bypass capacitor between these two power supplies (approximately 0.1F). (2) Mute function *Of the four drivers,ch1 has a brake function, and the other channels have a mute function. *When BRAKE1(23PIN)is set to high level, both ch1 outputs go low level, and the circuit enters brake mode. *When MUTE2(21PIN)is set to high level, the ch2 output is muted. *When MUTE34(19PIN)is set to high level, the ch3 and 4 outputs are muted. (3) Vref drop mute *When the voltage applied to Vref (16PIN)is 1.0V or less typ. , the driver outputs are set to high impedance. (4) Thermal shutdown *When the chip temperature reaches 150 typ. the output current is cut. The chip starts operating again at about 120 typ. . 2 PWM power supply drive block *This detects the maximun output level from among the four channels, and supplies the load drive power supply (36PIN)for the PWM. The external components are a PNP transistor, coil, Schottky diode, and capacitor.
33H 10pF 100k 2200pF 44 PWMFIL 37 PSW 36 HVcc BATT + 47k SBD 47F 0.1F
UTC
UNISONIC TECHNOLOGIES CO., LTD.
17
QW-R109-009,A
UTC MM1538
3 DC-DC converter block
LINEAR INTEGRATED CIRCUIT
(1) Output voltage *3.2V typ. voltage multiplier circuit can be constructed using external components. This voltage can be varied with the addition of an external resistor. The setting method is as follows.
VSYS1=1.2x
R1* R3 R2* R4 + R1 + R3 R2 + R4 R2* R4 R2 + R4
(V)
VSYS1 12 R1 7 R2 EI R4 R3 + 1.2V R1=external resistor R2=external resistor R3=35k R4=21k
(2) Short protect function *When the error amplifier output(6PIN)has switched to the high-level state, SPRT (8PIN)is charged, and when the voltage reaches 1.2V typ. , the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT(8PIN)according to the following formula.
t=CSPRT x
VTH (sec) (VTH=1.2V,ISPRT=10A) ISPRT
(3) Soft start function *The soft start function operates when a capacitor is connected between DEAD(4PIN)and GND. Also, the maximum duty can be varied by connecting a resistor to 4PIN.
t=CDEAD x R(sec) ( R=65k)
(4) Power off function *When low-level is applied to OFF(40PIN), SPRT(8PIN)is charged, and when the voltage reaches 1.2V typ. , the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT (8PIN)according to the following formula.
t=CSPRTx
VTH (sec)(VTH=1.2V,IOFF=20A) IOFF
(5) Over voltage protection circuit *When the voltage applied to BSEN(1PIN)reaches 8.4V typ. , SPRT (8PIN) is charged, and when the voltage reaches 1.2V typ. , theSW (5PIN)switching stops. The time until switching stops is set by the capacitor connected to SPRT(8PIN)according to the following formula.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
18
QW-R109-009,A
UTC MM1538
t=CSPRTx
LINEAR INTEGRATED CIRCUIT
VTH (sec)(VTH=1.2V,IHV=20A) IHV
4 Empty detector block (1) Output voltage *When the voltage applied to the BSEN(1PIN)falls below the detector voltage, EMP(35PIN)goes from high level to low level(open-collector output). The detector voltage has 50mV typ. of hysteresis to prevent output chattering. Use SEL (42PIN) to switch the detection voltage as shown below. SEL L High-Z 5 Reset circuit block *At about 90% typ. of the DC-DC converter output voltage, RESET(3PIN)goes from low level to high level, and AMUTE(34PIN)goes from high level to low level. The reset voltage has 50mV typ. of hysteresis to prevent output chattering. 6 Charging circuit block *The power supply for the charging circuit block is CHGVCC(41PIN), and is independent from the other circuits. The resistance between RCHG (33PIN) and GND sets the charging current. This current is drawn from SEL (42PIN). *A thermal shutdown circuit is provided, and when the chip temperature reaches 150 typ. the charging current is cut. The chip starts operating again at about 120 typ. . Detect Voltage 2.20V typ. 1.80V typ. Return Voltage 2.25V typ. 1.85V typ.
CHARACTERISTICS
Input Load Fluctuation
3 2
RL=
Output Voltage:Vo (V)
1 0 -1 -2 -3 -0.8
4 8 4 20
-0.6 -0.4 -0.2 0 Input Voltage:Vin (V) 0.2
8
20
*Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V
0.4 0.6 0.8
UTC
UNISONIC TECHNOLOGIES CO., LTD.
19
QW-R109-009,A
UTC MM1538
Input Load Fluctuation (ch2)
3 Output Voltage:Vo (V) 2 1 0 -1 -2 -3 -0.8
LINEAR INTEGRATED CIRCUIT
RL=
4 20
-0.6 -0.4 -0.2 0 Input Voltage:Vin (V) 0.2
8
20
8
4
*Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V
0.4 0.6 0.8
Dead Zone
0.006 Input voltage: VIN (mV) 0.004 0.002 0 -0.002 -0.004 -0.006 -30 -20
*Ta=normal temperature *BATT=HVcc=4V *VSYS1=VSYS2=3.2V *Vref=1.6V 8 20 4
-10 0 Output Voltage:Vo(mV) 10
20 8 4
20
30
Error Amp Output Voltage
2.0 1.8 Ta=normal temperature 1.6 BATT=2.4V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 1.0 0.0 0.5
Dead Output voltage E:VDAED (V) Eo Output Voltage:VEO(V)
EOPIN DAED PIN
1.5
2.0
2.5
3.0
3.5
4.0
Control Circuit Power Supply voltage:VSYS1(V)
UTC
UNISONIC TECHNOLOGIES CO., LTD.
20
QW-R109-009,A
UTC MM1538
Resete Pin Voltage
LINEAR INTEGRATED CIRCUIT
4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0
Reset Output Voltage:VRST (V)
Ta=normal temperature BATT=2.4V
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Control Circuit Power Supply voltage:VSYS1(V)
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
21
QW-R109-009,A

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