AN44180A
37V / 1.5A Stepping Motor Driver
FEATURES
4-phase input control
2-phase, half step, 1-2 phase, W1-2 phase excitation enabled
PWM can be driven by built-in CR (3-value can be selected during
PWM OFF period.)
The selection of PWM OFF period enables the best PWM drive.
Mix Decay control (4-value can be selected for Fast Decay ratio)
Mix Decay control can improve accuracy of motor current
waveform.
Built-in over-current protection (OCP)
If the current flows to motor output more than the setup value
due to ground-fault etc., the OCP operates and all motor outputs
are turned OFF
Built-in under voltage lockout (UVLO)
If supply voltage falls to less than the operating supply voltage
range, the UVLO operates and all motor outputs are turned OFF.
Built-in thermal protection (TSD)
If chip junction temperature rises and reaches to the setup
temperature, all motor outputs are turned OFF.
Built-in abnormal detection output function (NFAULT)
If OCP or TSD operates, an abnormal detection signal is output.
TYPICAL APPLICATION
0.01 F
100k
BC1 13
BC2 14
NFAULT 20
PHA 26
PHB 27
IN0
IN1
IN2
IN3
28
29
30
31
PWMSW 32
TJMON 3
0.01 F
VREFA 21
Built-in 3.3 V power supply (accuracy : 3%)
Built-in EMI reduction function
Built-in malfunction prevention function when it don’t input
supply voltage
it prevents from malfunction and destruction when it input
voltage to IF (ENABLEA/ENABLEB, IN0 3, PHA, PHB,
STBY, VREFA, VREFB) and it don’t supply voltage to VM.
32 pin Plastic Small Outline Package (SOP Type)
APPLICATIONS
LSI for stepping motor drives
DESCRIPTION
AN44180A is a two channel H-bridge driver LSI. Bipolar
stepping motor can be controlled by a single driver LSI.
Interface is “parallel control IF” and 2 phase excitation, halfstep, 1-2 phase excitation, W1-2 phase excitation can be
selected.
Mix Decay effect for Motor current
15 VPUMP
Fig1:Slow Decay
0.01 F
6 BOUT2
+OUT
7 RCSB
0.22
8 BOUT1
-OUT
16 VM2 0.1 F
47 F
+
ENABLEA 17
ENABLEB 18
DECAY1 4
DECAY2 5
Built-in standby function
The operation of standby function can lower current
consumption of this LSI.
Motor
Current
2ms/div
distortion
1 VM1
Fig2:Mix Decay(25%)
9 AOUT2
+OUT
10 RCSA
0.22
11 AOUT1
-OUT
VREFB 22
VREG 23
0.1 F
25 GND
Motor
Current
STBY 19
TEST 24
2ms/div
distortionless
Notes : This application circuit is an example. The operation of the
mass production set is not guaranteed. Customers shall
perform enough evaluation and verification on the design of
mass production set. Customers shall be fully responsible for
the incorporation of the above application circuit and
information in the design of the equipment.
Publication date: December 2012
1
Condition:
excitation mode W1-2 phase drive
fig1 DECAY1=L DECAY2=L
fig2 DECAY1=L DECAY2=H
Ver. AEB
AN44180A
ABSOLUTE MAXIMUM RATINGS
Symbol
Rating
Unit
Note
Supply voltage
Parameter
VM
37
V
*1
Power dissipation
PD
0.347
W
*2
Operating ambient temperature
Topr
–20
+85
C
*3
Operating junction temperature
Tj
–20
+150
C
*3
Tstg
–55
+150
C
*3
Storage temperature
Output pin voltage (AOUT1
BOUT2)
VOUT
37
V
*4
Motor drive current (AOUT1 BOUT2)
IOUT
1.5
A
*5
If
1.5
A
*5
VRCSA,VRCSB
2.5
V
—
VVPUMP
43
V
*6
VBC2
43
V
*6
VVREFA,VVREFB
-0.3 to 6
V
—
VSTBY
-0.3 to 6
V
—
VPHA,VPHB
-0.3 to 6
V
—
VENABLEA,VENABLEB
-0.3 to 6
V
—
VPWMSW
-0.3 to 6
V
—
VDECAY1,VDECAY2
-0.3 to 6
V
—
VIN0~IN3
-0.3 to 6
V
—
VTEST
-0.3 to 6
V
—
IVREG
-1 to 0
mA
—
INFAULT
0 to 2
mA
*7
Flywheel diode current
(AOUT1 BOUT2)
Input Voltage Range
Input Current Range
ESD
HBM (Human Body Model)
2
kV
—
CDM (Charge Device Model)
1
kV
—
Notes). This product may sustain permanent damage if subjected to conditions higher than the above stated absolute maximum
rating. This rating is the maximum rating and device operating at this range is not guaranteeable as it is higher than our
stated recommended operating range.
When subjected under the absolute maximum rating for a long time, the reliability of the product may be affected.
*1 :The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2 :The power dissipation shown is the value at Ta = 85 C for the independent (unmounted) LSI package without a heat sink.
When using this LSI, refer to the PD-Ta diagram of the package standard and design the heat radiation with sufficient
margin so that the allowable value might not be exceeded based on the conditions of power supply voltage, load, and
ambient temperature.
*3 :Except for the power dissipation, operating ambient temperature, operating junction temperature,and storage
temperature, all ratings are for Ta = 25 C.
*4 :This is output voltage rating and do not apply input voltage from outside to these pins. Set not to exceed allowable
range at any time.
*5 :Do not apply external currents to any pin specially mentioned. For circuit currents, (+) denotes current flowing into the
LSI and (–) denotes current flowing out of the LSI.
*6 :External voltage must not be applied to this pin. Do not exceed the rated value at any time.
*7 :This pin is connected to open drain circuit inside. Connect a resistor in series with power supply.
rated value at any time.
2
Do not exceed the
Ver. AEB
AN44180A
POWER DISSIPATION RATING
Package
SSOP032-P-0300D
PD Ta=25
JA
PD Ta=85
68.4 C/W *1
1827mW *1
950mW *1
96.9 C/W *2
1290mW
*2
671mW
*2
187.1 C/W *3
668mW
*3
347mW
*3
Note). For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, supply
voltage, load and ambient temperature conditions to ensure that there is enough margin follow the power and
the thermal design does not exceed the allowable value.
*1: Mount On PWB(4Layers) 50X50X0.8t(mm)
*2: Mount On PWB(1Layers) Glass-Epoxy:50X50X0.8t(mm)
*3: Without PWB
Although this LSI has built-in ESD protection circuit, it may still sustain permanent damage if not handled
properly. Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS
gates.
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Min.
Typ.
Max.
Unit
Note
Supply voltage range
VM1,VM2
8
24
34
V
*1
VVREFA,VVREFB
0.1
-
3.5
V
—
VSTBY
0
-
5.5
V
—
VPHA,VPHB
0
-
5.5
V
—
VENABLEA,VENABLEB
0
-
5.5
V
—
VPWMSW
0
-
5.5
V
—
VDECAY1,VDECAY2
0
-
5.5
V
—
VIN0~IN3
0
-
5.5
V
—
VTEST
-
GND
-
V
*2
RCSA,RCSB
-
0.22
-
CBC
-
0.01
-
F
—
CVPUMP
-
0.01
-
F
—
CVREG
-
0.1
-
F
—
Operating ambient
temperature
Taopr
-20
-
85
C
—
Operating junction
temperature
Tjopr
-
-
120
C
—
Input Voltage Range
External Constants
Note)
—
*1:The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2:Be sure to connect TEST pin to GND.
3
Ver. AEB
AN44180A
ELECTRICAL CHARACTERISTICS
VM=24V,Ta = 25 C 2 C unless otherwise specified.
Parameter
Symbol
Limits
Conditions
Min
Typ
Max
Unit Note
Output Drivers
Upper-side output ON Resistance
RONH
I = –0.8 A
—
0.38
0.57
—
Lower-side output ON Resistance
RONL
I = 0.8 A
—
0.57
0.855
—
VDI
I = 0.8A
0.5
1
1.5
V
—
VM = 37 V, VRCS = 0 V
—
—
10
A
—
ENABLE = Low,
STBY = High
—
7.5
12.5
mA
—
STBY = Low
—
25
40
A
—
Flywheel diode forward voltage
Output leakage current
ILEAK
Supply current
Supply current (Active)
IM
Supply current (STBY)
IMSTBY
I/O Block
STBY High-level input voltage
VSTBYH
—
2.1
—
5.5
V
—
STBY Low-level input voltage
VSTBYL
—
0
—
0.8
V
—
STBY High-level input current
ISTBYH
STBY = 5 V
6
12.5
25
A
—
STBY Low-level input current
ISTBYL
STBY = 0 V
-2
—
2
A
—
PWMSW High-level input voltage
VPWMSWH
—
2.3
—
5.5
V
—
PWMSW Middle-level input
voltage
VPWMSWM
—
1.2
—
1.7
V
—
PWMSW Low-level input voltage
VPWMSWL
—
0
—
0.6
V
—
PWMSW High-level input current
IPWMSWH
PWMSW = 5 V
36
73
146
A
—
PWMSW Low-level input current
IPWMSWL
PWMSW = 0 V
-60
-30
-15
A
—
PWMSW open voltage
VPWMSWO
—
1.2
1.45
1.7
V
—
Logic input High-level input
voltage
VLOGICH
—
2.1
—
5.5
V
*1
Logic input Low-level input
voltage
VLOGICL
—
0
—
0.8
V
*1
Logic input High-level input
current
ILOCIGH
Logic input pin = 5 V
25
50
100
A
*1
ILOGICL
Logic input pin = 0 V
Logic input Low-level input current
-2
—
2
A
*1
DECAY High-level input voltage
VDECAYH
—
2.1
—
5.5
V
*2
DECAY Low-level input voltage
VDECAYL
—
0
—
0.8
V
*2
DECAY High-level input current
IDECAYH
DECAY = 5 V
12.5
25
50
A
*2
DECAY Low-level input current
IDECAYL
DECAY = 0 V
-2
—
2
A
*2
Notes) *1 : Logic input pin represents PHA, PHB, ENABLEA, ENABLEB, IN0
*2 : DECAY represents DECAY1 and DECAY2.
4
3.
Ver. AEB
AN44180A
ELECTRICAL CHARACTERISTICS continued
VM=24V,Ta = 25 C 2 C unless otherwise specified.
Parameter
Symbol
Conditions
VREF input bias current
IVREF
VREF input voltage range
VVREF
PWM OFF time 1
TOFF1
PWM OFF time 2
PWM OFF time 3
Limits
Unit
Note
1
A
*3
—
3.5
V
*3
16.8
28
39.2
s
—
PWMSW = High
9.1
15.2
21.3
s
—
PWMSW = Middle
4.9
8.1
11.3
s
—
VREF = 0 V
0.4
0.75
1.0
s
—
Min
Typ
Max
—
-1
—
—
0.1
PWMSW = Low
TOFF2
TOFF3
Torque control block
Pulse blanking time
TB
Comp threshold H (100%)
VTCMP1
VREF = 3.3 V
321
330
339
mV
*3
*4
Comp threshold M (70.7%)
VTCMP2
VREF = 3.3 V
224
233
242
mV
*3
*5
Comp threshold L (38.4%)
VTCMP3
VREF = 3.3 V
118
127
136
mV
*3
*6
Notes) *3 : VREF represents VREFA and VREFB.
*4 : VTCMP1 = VREF
*5 : VTCMP2 = VREF
*6 : VTCMP3 = VREF
0.1 100%
0.1 70.7%
0.1 38.4%
5
Ver. AEB
AN44180A
ELECTRICAL CHARACTERISTICS continued
VM=24V,Ta = 25 C 2 C unless otherwise specified.
Limits
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Note
V
—
Reference voltage block
Reference voltage
VVREG
IVREG = 0 mA
3.21
3.3
3.39
Output impedance
ZVREG
IVREG = –1 mA
—
—
10
2.1
—
5.5
V
—
0
—
0.8
V
—
—
Test input block
—
TEST High-level input voltage
VTESTH
TEST Low-level input voltage
VTESTL
TEST High-level input current
ITESTH
TEST = 5 V
25
50
100
A
—
TEST Low-level input current
ITESTL
TEST = 0 V
-2
—
2
A
—
VNFAULTL
INFAULT = 1mA
—
—
0.2
V
—
INFAULT(leak)
VNFAULT = 3.3V
—
—
5
A
—
—
Abnormal detection output block
NFAULT pin output Low-level
voltage
NFAULT pin output leak current
6
Ver. AEB
AN44180A
ELECTRICAL CHARACTERISTICS continued
VM=24V,Ta = 25 C 2 C unless otherwise specified.
Limits
Symbol
Conditions
Output slew rate 1
VTr
At the rising edge of output
voltage, sink side of motor
current
—
300
Output slew rate 2
VTf
At the falling edge of output
voltage, sink side of motor
current
—
TSDon
—
Protection start voltage
VUVLO1
Protection stop voltage
Parameter
Unit
Note
—
V/ s
*7
*10
300
—
V/ s
*7
*10
—
150
—
C
*8
*10
—
—
6.0
—
V
*10
VUVLO2
—
—
7.0
—
V
*10
IOCP
—
—
5
—
A
*9
*10
Min
Typ Max
Output block
Thermal shutdown protection
Thermal shutdown protection
operating temperature
Under voltage lockout
Over current protection
Protection start current
Notes) *7 : It represent the characteristics of AOUT1, AOUT2,BOUT1,BOUT2 .
*8 : TSD is a latch type protection
The protection operation starts at 150 C. (All motor outputs are turned off , and latched.)
/ The latch is released by Standby or UVLO.
*9 : OCP is a latch type protection
All motor outputs are turned off by over-current detection, and be latched. / The latch is released by Standby or UVLO.
In addition, All motor outputs are turned off at under UVLO.
*10 :Typical Value checked by design.
7
Ver. AEB
AN44180A
PIN CONFIGURATION
Top View
VM1
1
32
PWMSW
N.C.
2
31
IN3
TJMON
3
30
IN2
DECAY1
4
29
IN1
DECAY2
5
28
IN0
BOUT2
6
27
PHB
RCSB
7
26
PHA
BOUT1
8
25
GND
AOUT2
9
24
TEST
RCSA
10
23
VREG
AOUT1
11
22
VREFB
N.C.
12
21
VREFA
BC1
13
20
NFAULT
BC2
14
19
STBY
VPUMP
15
18
ENABLEB
VM2
16
17
ENABLEA
8
Ver. AEB
AN44180A
PIN FUNCTIONS
Pin No.
Pin name
Type
Description
1
VM1
Power supply Power supply 1 for motor
2
N.C.
3
TJMON
Output
4
DECAY1
Input
Mix Decay setup 1
5
DECAY2
Input
Mix Decay setup 2
6
BOUT2
Output
7
RCSB
Input/Output
8
BOUT1
Output
Phase B motor drive output 1
Phase A motor drive output 2
—
N.C.
VBE monitor
Phase B motor drive output 2
Phase B motor current detection
9
AOUT2
Output
10
RCSA
Input/Output
11
AOUT1
Output
12
N.C.
—
13
BC1
Output
Capacitor connection 1 for charge pump
14
BC2
Output
Capacitor connection 2 for charge pump
15
VPUMP
Output
Charge pump circuit output
16
VM2
17
ENABLEA
Input
Phase A Enable/Disable CTL
18
ENABLEB
Input
Phase B Enable/Disable CTL
19
STBY
Input
Standby
20
NFAULT
Output
21
VREFA
Input
Phase A Torque reference voltage input
22
VREFB
Input
Phase B Torque reference voltage input
23
VREG
Output
Internal reference voltage (output 3.3 V)
24
TEST
Input
25
GND
Ground
26
PHA
Input
Phase A phase selection input
27
PHB
Input
Phase B phase selection input
28
IN0
Input
Phase A output torque control 1
29
IN1
Input
Phase A output torque control 2
30
IN2
Input
Phase B output torque control 1
31
IN3
Input
Phase B output torque control 2
32
PWMSW
Input
PWM OFF period selection input
Phase A motor current detection
Phase A motor drive output 1
N.C.
Power supply Power supply 2 for motor
Abnormal detection output
Test mode setup
Ground
Notes) Concerning detail about pin description, please refer to OPERATION and APPLICATION INFORMATION section.
9
Ver. AEB
AN44180A
FUNCTIONAL BLOCK DIAGRAM
BC1 13
BC2 14
NFAULT
15 VPUMP
CHARGE
PUMP
20
VM
OCP
TSD
ENABLEB 18
BOUT1
OCP BOUT2
Gate Circuit
DECAY1 4
6 BOUT2
31
30
R
IN3
IN2
SQ
DECAY2 5
PHB 27
7 RCSB
8 BOUT1
16 VM2
VREFB 22
VREG
TJMON 3
PWMSW 32
PWMSW
BLANK
OSC
TSD
UVLO
VREFA 21
1 VM1
9 AOUT2
10
IN0 28
TEST
24
PHA
ENABLEA
26
17
VREG
23
STBY
19
RCSA
QS
R
IN1 29
11 AOUT1
TEST
Gate Circuit
DECAY2
DECAY1
AOUT1
BG
VM
VPUMP
VM
OCP AOUT2
25 GND
Note) This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
10
Ver. AEB
AN44180A
OPERATION
1. Control mode
1) Truth table (output control)
STBY
ENABLEA
ENABLEB
Control / Charge
pump circuit
Ach output
transistor
Bch output
transistor
Low
-
-
OFF
OFF
OFF
High
Low
High
ON
OFF
ON
High
High
Low
ON
ON
OFF
High
High
High
ON
ON
ON
Note) Input external signals to STBY pin in order to set STBY signal to High-level.
Because, STBY pin cannot be set to High-level when it is connected to VREG.
Note) Low 0V 0.8V High 2.1V 5.5V
2) Truth table (PHA/PHB input)
3) Truth table (PWM OFF period selection)
PHA/PHB
AOUT1/BOUT1
AOUT2/BOUT2
PWMSW
High
High
Low
Low
28.0
sec
High
Middle or OPEN
8.1
sec
High
15.2
sec
Low
Low
Note) Low 0V
0.8V
High 2.1V
5.5V
4) Truth table (Decay selection)
DECAY1
DECAY2
Decay control
Low
Low
Slow Decay
Low
High
25%
High
Low
50%
High
High
100%
PWM OFF period
Note) Low 0V 0.6V, Middle 1.2V 1.7V ,High 2.3V 5.5V
Note) PWMSW can be set to Middle by setting PWMSW to
Open. However, it might occur the error of operation
due to the noise. In case, connect the capacity of
0.01 F or more between PWMSW and GND .
Note) The above rate is applied to Fast Decay every PWM OFF period.
Note) Low 0V 0.8V High 2.1V 5.5V
Note) DECAY1 and DECAY2 can be set to Low by setting DECAY1 and DECAY2 to Open.
However, it might change to High setting due to the noise. In case, DECAY1 pin and DECAY2 pin is shorted to GND.
5) Truth table (IN0 IN3 control)
IN0/IN2
IN1/IN3
output current
Low
Low
(VREF / 10)
(1 / Rs)
100% = IOUT
High
Low
(VREF / 10)
(1 / Rs)
70.7% = IOUT
Low
High
(VREF / 10)
(1 / Rs)
38.4% = IOUT
High
High
0
Note) Rs : current detection resistance
Note) IN0 = IN1 = High / IN2 = IN3 = High, all outputs transistors turn off.
Note) Low 0V 0.8V High 2.1V 5.5V
6) Truth table (NFAULT output)
TSD
OCP
Thermal shutdown protection start
Thermal shutdown protection stop
NFAULT
Output transistor
Low
All channel output : OFF
Over-current detection start
Low
All channel output : OFF
Over-current detection stop
Hi-Z
ON
Notes)
TSD is a latch type protection The protection operation starts at 150 C. (All motor outputs are turned off , and latched.)
The latch is released by Standby or UVLO.
OCP is a latch type protection
All motor outputs are turned off by over-current detection, and be latched.
The latch is release by Standby or UVLO. In addition, All motor outputs are turned off at under UVLO.
NFAULT is an open drain output
If it uses NFAULT pin ,connect the resistance between VREG and NFAULT pin.
The recommended value of resistance is 100k . If it don‘t use NFAULT, it recommends open pins.
11
Ver. AEB
AN44180A
OPERATION (continued)
2. About motor current setup
Motor current is represented by the following formula.
motor current :Imotor = (VREF
0.1) / RCS (current detection resistance)
3. Each phase current value (Timing chart)
1) 2-phase excitation drive (4-step sequence)
(IN0 IN3 = const.)
1
2
3
4
1
VPHA
VPHB
VPHB
flow-out
4
A-ch.
motor current
flow-out
flow-out
flow-in
flow-in
A-ch.
motor current
flow-in
B-ch.
motor current
flow-in
B-ch.
motor current
3
flow-out
VPHA
2
FWD
REV
12
Ver. AEB
AN44180A
OPERATION (continued)
3. Each phase current value (Timing chart) (continued)
2) Half-step drive (8-step sequence)
(Ex.)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
VPHB
VPHB
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
flow-out
flow-in
B-ch.
motor current
flow-in
B-ch.
motor current
flow-out
flow-in
A-ch.
motor current
flow-in
A-ch.
motor current
flow-out
VPHA
flow-out
VPHA
FWD
REV
REV
FWD
13
Ver. AEB
AN44180A
OPERATION (continued)
3. Each phase current value (Timing chart) (continued)
3) 1-2-phase excitation drive (8-step sequence)
(Ex.)
1
2 3 4
5
6
7
8
1
VPHB
VPHB
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
6
7
8
flow-in
flow-out
flow-out
B-ch.
motor current
flow-in
B-ch.
motor current
5
flow-in
A-ch.
motor current
flow-in
A-ch.
motor current
3 4
flow-out
VPHA
flow-out
VPHA
2
FWD
REV
REV
FWD
14
Ver. AEB
AN44180A
OPERATION (continued)
3. Each phase current value (Timing chart) (continued)
4) W1-2-phase excitation drive (16-step sequence)
(Ex.)
1 2 3 4 5 6 7 8 9 10111213141516
1 2 3 4 5 6 7 8 9 10111213141516
VPHA
VPHB
VPHB
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
flow-out
flow-in
A-ch.
motor current
flow-out
B-ch.
motor current
flow-in
flow-in
B-ch.
motor current
flow-out
flow-in
A-ch.
motor current
flow-out
VPHA
FWD
REV
REV
FWD
15
Ver. AEB
AN44180A
APPLICATIONS INFORMATION
1. Notes
1) Pulse blanking time
This LSI has pulse blanking time (0.75 µs/Typ. value) to prevent erroneous current detection caused by noise.
Therefore, the motor current value will not be less than current determined by pulse blanking time. Pay attention at
the time of low current control. The relation between pulse blanking time and minimum current value is shown as
Figure1. In addition, increase-decrease of motor current value is determined by L value, wire wound resistance,
induced voltage and PWM on Duty inside a motor.
Setup current value
At normal operation
In case of setting less
than minimum current
value
Minimum current value
Setup current value
TB
TPWM : PWM OFF period
TB
: Pulse blanking time
TPWM
Figure1. RCS current waveform
2) VREF voltage
When VREF* voltage is set to Low-level, erroneous detection of current might be caused by noise because
threshold of motor current detection comparator becomes low (= VREF/10 motor current ratio [%] ).
Use this LSI after confirming no misdetection with setup VREF* voltage.
Measures such as adding capacity are recommended, if the VREF* voltage is not stabilized due to the noise.
The recommended value of capacity is 0.01µF. * : A or B)
3) Notes on interface, DECAY1,DECAY2,PWMSW,TEST
Absolute maximum of Pin 4 to 5, Pin 17 to 19, Pin 21 to 22, Pin 24 and Pin 26 to 32 is –0.3 V to 6 V. When the
setup current for a motor is large and lead line of GND is long, GND pin potential might rise. Take notice that
above-mentioned pin potential is negative to difference in potential between GND pin reference and abovementioned pin in spite of inputting 0 V to the above-mentioned pin. At that time, pay attention allowable voltage
range must not be exceeded.(*Interface pin: ENABLEA, ENABLEB, IN0~3, PHA, PHB, STBY,VREFA,VREFB)
4) Notes on ENABLE and IN0~3
In case it set ENABLEA,ENABLEB,IN0~3 pin to High -level, short above-mentioned pins to VREG or input external
High-level signal. In case it set ENABLEA,ENABLEB,IN0~3 pin to Low -level, short above-mentioned pins to
GND.
5) Notes on DECAY1 and DECAY2 and PWMSW
DECAY1 and DECAY2 and PWMSW are not IF pin. As for the High/Low setting of DECAY1, DECAY2, PWMSW,
it is recommended to short to GND or VREG. If the above pins are high-impedance such as open, note that this
LSI might not operate normally because it easily influences the noise.
PWMSW can be set to Middle by setting PWMSW to Open. However, it might occur the error of operation due to
the noise. In case, connect the capacity of 0.01µF or more between PWMSW and GND .
6) Notes on test mode
When inputting voltage of above 0.8 V to TEST (Pin 24), this LSI might become test mode.
When disturbance noise etc. makes this LSI test mode, motor might not operate normally. Therefore, use this
LSI on condition that TEST pin is shorted to GND at normal motor operation.
7) Notes on N.C. pin
It recommends connecting N.C. pin to GND.
16
Ver. AEB
AN44180A
APPLICATIONS INFORMATION ( continued )
1. Notes (continued)
8) Notes on Standby mode release / Under-voltage lockout release
This LSI has all motor outputs OFF period of about 400 µs (typ) owing to release of Standby and UVLO (Refer to
the below figure).
This is why restart from Standby and UVLO after charge pump voltage rises sufficiently because charge pump
operation stops at Standby and UVLO.
When the charge pump voltage does not rise sufficiently during all motor outputs OFF period due to that
capacitance between VPUMP and GND becomes large etc., the LSI might overheat and it might not operate
normally. In this case, release Standby and UVLO at ENABLE = Low-level, and restart at ENABLE = High-level
after the charge pump voltage rises sufficiently.
After all motor outputs OFF period, the ground-fault detection period is set to about 6 µs in order to detect the
ground-fault of motor output before motor is turned on.
All the upper side power MOS are turned on during the above ground fault detection period, and then whether the
ground-fault occurs or not is checked. (Refer to the following contents.)
If the ground-fault is detected at that time, all motor outputs are turned off, and motor drive stops.
[At Standby release]
STBY
Standby
Motor output
Low
Standby
All motor outputs
OFF
High
Standby release
Start (At ENABLE = High)
All motor outputs OFF
Ground fault
All motor outputs OFF
detection
(At ENABLE = Low)
About 400 µs(typ)
About 6 µs(typ)
[At under-voltage lockout release]
VM
Motor output
Low
High
All motor outputs
OFF (UVLO)
All motor outputs OFF
Start (At ENABLE = High)
About 400 µs(typ)
17
Ground fault
All motor outputs OFF
detection
(At ENABLE = Low)
About 6 µs(typ)
Ver. AEB
AN44180A
APPLICATIONS INFORMATION ( continued )
1. Notes (continued)
9) Notes on RCS line
Take consideration in the below figure and the points and design PCB pattern.
(1) Point 1
Design so that the wiring to the current detection pin (RCSA/RCSB pin) of this LSI is thick and short to lower
impedance. This is why current can not be detected correctly owing to wiring impedance and current might
not be supplied to a motor sufficiently.
(2) Point 2
Design so that the wiring between current detection resister and connecter GND (the below figure Point 2) is
thick and short to lower impedance. As the same as Point 1, sufficient current might not be supplied due to
wiring impedance. In addition, if there is a common impedance on the side of GND of RCSA/RCSB, peak
detection might be erroneous detection. Therefore, install the wiring on the side of GND of RCSA/RCSB
independently.
(3) Point 3
Connect GND pin of this LSI to the connecter on PCB independently. Separate the wiring removed current
detection resister of large current line (Point 2) from GND wiring and make these wirings one-point shorted
at the connecter as the below figure. That can make fluctuation of GND minimum.
Motor current
detection resistor
Point 2
Point 1
Connecter GND
RCSA/RCSB
Motor
LSI
GND
Point 3
10)Note of a substrate pattern design
A high current flows into the LSI. Therefore, the common impedance of PCB can not be ignored. Take the
following points into consideration and design the PCB pattern for a motor. Because the wiring connecting to VM1
(Pin 1) and VM2 (Pin 16)of this LSI is high-current, it is easy to generate noise at time of switching by wiring L.
That might cause malfunction and destruction (Figure 2). As Figure 3, the escape way of the noise is secured by
connecting a capacitor to the connector close to the VM pin of the LSI. This makes it possible to suppress the
fluctuation of direct VM pin voltage of the LSI. Make the setting as shown in Figure 3 as much as possible.
Low spike amplitude
due to capacitance
between VM pin
and GND
VM
VM
L
L
VM
VM
GND
GND
LSI
LSI
C
C
RCS
RCS
GND
GND
Figure 3. Recommended pattern
Figure 2. No recommended pattern
18
Ver. AEB
AN44180A
APPLICATIONS INFORMATION ( continued )
1. Notes (continued)
11) LSI junction temperature
In case of measuring chip temperature of this LSI, measure the voltage of TJMON pin (Pin 3) and estimate
the chip temperature from the data below. However, because this data is technical reference data, conduct a
sufficient reliability test of the LSI and evaluate the product with the LSI incorporated.
VBE[V]
TJMON pin temperature characteristics
VBE / temp = –4.91 [mV / C]
Temp[ C]
0
150
12) Power-on and Supply voltage change
When supplying to VM pin (Pin 1, 16) or raising supply voltage, set the rise speed of VM voltage to less than 0.1
V/µs . If the rise speed of supply voltage is too rapid, it might cause error of operation and destruction of the LSI.
If the rise speed of VM voltage is more rapid than 0.1V/µs, conduct a sufficient reliability test and also check a
sufficient evaluation for a product.
In addition, rise the VM supply voltage in an ENABLE = Low state when change VM supply voltage from low
voltage to high voltage within the operating supply voltage range.
Since there is not the all motor outputs OFF period shown in P17. APPLICATION INFORMATION 8) for the supply
voltage change within the operating supply voltage range, the VPUMP voltage is in a low voltage state due to not
following to VM supply voltage change enough, and this LSI might not operate normally.
Therefore, restart this LSI by setting ENABLE to High after the VPUMP voltage rises enough.
In addition, it is recommended to fall VM voltage in motor stop state (ENABLEA/B = Low or STBY = Low) for
the stable fall of supply voltage.
Supply voltage
VM
Rise at less than 0.1 V/µs
Time
13) Over-current protection function
This LSI has over-current protection (OCP) circuit to protect from the ground-fault etc. of the motor output. When
motor current more than setting value flows to power MOS for about 5 µs (Typ.) due to the ground-fault, all motor
outputs are turned OFF by latch operation. OCP is canceled by STBY = Low or UVLO (Under-voltage lockout)
operation. However, the OCP circuit do not guaranteed the protection circuit of set. Therefore, do not use the OCP
function of this LSI to protect a set. Note that this LSI might break before the protection function operates when it
instantaneously exceeds the safe operation area and the maximum rating. When the inductor element is large due
to the length of wiring at ground-fault, note that this LSI might break. Because the motor output voltage falls on a
negative voltage or excessively rises after motor current excessively flows to motor outputs.
19
Ver. AEB
AN44180A
PACKAGE INFORMATION ( Reference Data )
Package Code :SSOP032-P-0300D
unit : mm
Body Material
:
Lead Material
:
Br/Sb Free Epoxy resin
Cu Alloy
Lead Finish Method :
20
Ver. AEB
AN44180A
IMPORTANT NOTICE
1. When using the LSI for new models, verify the safety including the long-term reliability for each product.
2. When the application system is designed by using this LSI, please confirm the notes in this book.
Please read the notes to descriptions and the usage notes in the book.
3. Please use this product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled
substances, including without limitation, the EU RoHS Directive. Our company shall not be held responsible for any damage
incurred as a result of our LSI being used by our customers, not complying with the applicable laws and regulations.
4. Pay attention to the direction of LSI. When mounting it in the wrong direction onto the PCB (printed-circuit-board), it might emit
smoke or ignite.
5. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. In
addition, refer to the Pin Description for the pin configuration.
6. Perform a visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as a
solder-bridge between the pins of the semiconductor device. Also, perform a full technical verification on the assembly quality,
because the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the LSI
during transportation.
7. Take notice in the use of this product that it might be damaged or occasionally emit smoke when an abnormal state occurs
such as output pin-VM short (Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load
short).
Especially, for the pins below, take notice Power supply fault, Ground fault, short to motor current detection pin, load short and
short between the pin.
Motor drive output pin (Pin 6, 8, 9, 11)
Motor current detection pin (Pin 7, 10)
Charge pump circuit pin (Pin 13, 14, 15)
Power supply (Pin 1, 16)
Safety measures such as an installation of fuses are recommended because the extent of the above-mentioned damage and
smoke emission will depend on the current capability of the power supply..
8. This LSI is intended to be used for general electronic equipment.
Consult our sales staff in advance for information on the following applications: Special applications in which exceptional
quality and reliability are required, or if the failure or malfunction of this LSI may directly jeopardize life or harm the human
body.
Any applications other than the standard applications intended.
(1) Space appliance (such as artificial satellite, and rocket)
(2) Traffic control equipment (such as for automobile, airplane, train, and ship)
(3) Medical equipment for life support
(4) Submarine transponder
(5) Control equipment for power plant
(6) Disaster prevention and security device
(7) Weapon
(8) Others : Applications of which reliability equivalent to (1) to (7) is required
Our company shall not be held responsible for any damage incurred as a result of or in connection with the LSI being used for
any special application, unless our company agrees to the use of such special application.
9. This LSI is neither designed nor intended for use in automotive applications or environments unless the specific product is
designated by our company as compliant with the ISO/TS 16949 requirements.
Our company shall not be held responsible for any damage incurred by customers or any third party as a result of or in
connection with the LSI being used in automotive application, unless our company agrees to such application in this book.
10. The protection circuit is for maintaining safety against abnormal operation. Therefore, the protection circuit should not work
during normal operation.
Especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily
exceeded due to output pin to VM short (Power supply fault), or output pin to GND short (Ground fault), the LSI might be
damaged before the thermal protection circuit could operate.
11. Unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the
pins because the device might be damaged, which could happen due to negative voltage or excessive voltage generated
during the ON and OFF timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven.
12. Product which has specified ASO (Area of Safe Operation) should be operated in ASO
13. Verify the risks which might be caused by the malfunctions of external components.
21
Ver. AEB
AN44180A
IMPORTANT NOTICE (continued)
14. Confirm characteristics fully when using the LSI. Secure adequate margin after considering variation of external part and this
LSI including not only static characteristics but transient characteristics. Especially, Pay attention that abnormal current or
voltage must not be applied to external parts because the pins (Pin 6, 8, 9, 11, 13, 14, 15 ) output high current or voltage.
15. Design the heat radiation with sufficient margin so that Power dissipation must not be exceeded base on the conditions of
power supply voltage, load and ambient temperature.
(It is recommended to design to set connective parts to 70% to 80% of maximum rating)
16. Set capacitance value between VPUMP and GND so that VPUMP (Pin 15) must not exceed 43 V transiently at the time of
motor standby to motor start.
17. This LSI employs a PWM drive method that switches the high-current output of the output transistor. Therefore, the LSI is apt
to generate noise that may cause the LSI to malfunction or have fatal damage. To prevent these problems, the power supply
must be stable enough. Therefore, the capacitance between the VREG and GND pins must be a minimum of 0.1 F and the
one between the VM and GND pins must be a minimum of 47 F and as close as possible to the LSI so that PWM noise will
not cause the LSI to malfunction or have fatal damage.
22
Ver. AEB
Request for your special attention and precautions
in using the technical information and semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the
laws and regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit
examples of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic
Corporation or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon
any such right owned by any other company which may arise as a result of the use of technical information de-scribed in
this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment,
communications equipment, measuring instruments and household appliances), or for specific applications as expressly
stated in this book.
Please consult with our sales staff in advance for information on the following applications, moreover please exchange
documents separately on terms of use etc.: Special applications (such as for in-vehicle equipment, airplanes, aerospace,
automotive equipment, traffic signaling equipment, combustion equipment, medical equipment and safety devices) in
which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize
life or harm the human body.
Unless exchanging documents on terms of use etc. in advance, it is to be understood that our company shall not be held
responsible for any damage incurred as a result of or in connection with your using the products described in this book for
any special application.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or
improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date
Product Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating
conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed
the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down
and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design,
arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages,
for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD,
EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. We do not
guarantee quality for disassembled products or the product re-mounted after removing from the mounting board.
When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed
time since first opening the packages.
(7) When reselling products described in this book to other companies without our permission and receiving any claim of
request from the resale destination, please understand that customers will bear the burden.
(8) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our
company.
No.010618
