Anpec APX6219KI-TR Pwm stepper motor driver Datasheet

APX6219
PWM Stepper Motor Driver
Features
General Description
•
The APX6219 is designed to drive both winding of a
two-phase bipolar stepper motor or bidirectionally
control 2 DC motors. APX6219 includes two Hbridges capable of continuous output current of ±750
mA with peak start up to 1A and operating voltages
up to 28V. Motor winding current can be controlled
by the internal fixed-frequency, pulse-width modulated
(PWM), current-control circuitry. Wide range current
control is controlled by means of two logic inputs with
a external reference voltage for each bridge. The peak
load current limit is set by the user’s selection of a
reference voltage and current-sensing resistor. Two
logic-level select output current limits of 0%,33%,
67%, or 100% of the maximum level. A phase input
to each bridge determines load current direction. A
thermal shutdown protection circuit disables the outputs if the chip temperature over the safe operation
limit. The APX6219 come in SOP-24 package.
•
Able to Drive Both Windings of Bipolar Stepper
Motor
Up to 750 mA Continuous Output Current for
Each Winding
•
Up to 28V Output Sustaining Voltage
•
Internal PWM Current Control
•
Built-in Protection Diode
•
•
Low Output Saturation Voltage
Internal Thermal Shutdown
Lead Free Available (RoHS Compliant)
•
Applications
•
Scanner
•
•
Stepping Motor Control
Thermal Printer
Pin Configuration
OUT1A
1
24
VBB(LOAD SUPPLY)
OUT2A
2
23
SENSE1
SENSE2
3
22
COMP.INPUT1
COMP.INPUT2
4
21
OUT1B
OUT2B
5
20
l01
GND
6
19
GND
GND
7
18
GND
l02
8
17
l11
I12
9
16
PHASE1
PHASE2
10
15
VREF1
VREF2
11
14
RC1
RC2
12
13
VCC(LOGIC SUPPLY)
SOP-24 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
1
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APX6219
Ordering and Marking Information
P ackage C ode
K : SO P - 24
Tem p. Range
° to 8 5 °C
I : -4 0 C
H a n d lin g C o d e
TU : Tube
TR : Tape & R eel
L e a d F re e C o d e
L : L e a d F re e
B la n k : O rig in a l D e v ic e
APX6219
L e a d F re e C o d e
H a n d lin g C o d e
Tem p. Range
Package Code
A P X6219
XXXXX
A P X6219 K :
X X X X X - D a te C o d e
Notes: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering operations.
ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.
Pin Description
PIN
I/O
NO.
Name
1,2
OUTPUT A
O
3,23
Sense
Resistor
O
4,22
Comparator
Input
I
5,21
6,7,18,19
OUTPUT B
Ground
O
8,9
I02/I12
I
20,17
I01/I11
I
10,16
PHASE
I
11,15
12,14
13
24
Reference
Voltage
RTCT
VCC
VBB
I
O
Description
H- bridge Output connection. The output stage is a “H” bridge formed by four
transistors and four-protection diode for switching applications.
Connection to lower emitters of output stage for insertion of current sensor
resistor to check the peak value of output current
The voltage across the sense resistor is feedback to this input through the
low pass filter RC CC. The higher power transistors are disabled when the
sense voltage exceeds the reference voltage of selected comparator. The
current decays for a time set by RT CT when this happen
See pins 1,2
Ground connection
These pins are logic inputs which select the outputs of the comparators to set
the output current level. Current also depends on the sensing resistor and
reference voltage.
I0
I1
Current level
H
H
No current
Low current 1/3 IO max
L
H
Medium current 2/3 IO max
H
L
Maximum current IO max
L
L
See pins 8,9; current level control for channel2
This TTL-compatible logic input sets the current flow direction through load.
A schmitt trigger with this input provides the noise immunity and a delay
circuit prevents output stage short circuits during switching
A voltage apply this pin sets the input of a comparator to control the output
current
A RTCT connection to this pin sets the off time of higher power transistor
Logic supply voltage
Load supply voltage
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
2
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APX6219
Block Diagram
(22)
COMPARATOR
INPUT1
(20) I01
¡]
17¡^I11
(16) PHASE1
(14)
RC1
(13)¡)
LOGIC
SUPPLY
LOGIC
SURRENT
SELECT
(24)
LOAD
SUPPLY
POWER
BRIDGE
1
(1) OUT1A
WINDING1
(21) OUT1B
(15) VREF1
THERMAL
SHUTDOWN
(11) VREF2
(8) I02
(9) I12
(10) PHASE2
LOGIC
SURRENT
SELECT
(6,7,18,19)
(4)
GND
COMPARATOR
INPUT2
POWER
BRIDGE
2
(12)
RC2
(23)
SENSE1
RSENSE1
(2) OUT2A
WINDING2
(5) OUT2B
(3)
SENSE2
RSENSE2
Absolute Maximum Ratings
Symbol
VBB
IO
IO
VCC
VIN
VSENSE
RTH,JA
RTH,JC
PD
Parameter
Load Supply Voltage
Output Current (Peak)
Output Current (Continuous)
Logic Supply Voltage
Logic Input Voltage
Driver Output Sense Voltage
Thermal Resistance – Junction to Ambient*
SOP-24
Thermal Resistance – Junction to Case
SOP-24
Power Dissipation
TJ
Junction Temperature
TOP
Operating Temperature Range
TSTG
Storage Temperature Range
TL
Lead Temperature (Soldering, 10 second)
(*) With minimized copper area.
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
3
Rating
30
±1
±750
7
-0.3 to
VCC+0.3
1.5
75
15
Internally
Limited
0 to 150
0 to 70
-65 to +150
260
Unit
V
A
mA
V
V
V
°C/W
°C/W
W
°C
°C
°C
°C
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APX6219
Electrical Characteristics
Unless otherwise noted these specifications apply over full temperature, VBB=28V, VCC=4.75 to 5.25V, VREF=5V,
TJ=0 to 125°C . Typical values refer to TJ=25°C .
Symbol
Parameter
Test Conditions
Output drivers (OUTA or OUTB)
VBB
Motor Supply Voltage
ILEAK
VCE(sat)
Output Leakage Current
Output Saturation Voltage
IR
Clamp Diode Leakage Current
VF
Clamp Diode Forward Voltage
IBB(on) Driver Supply Current
IBB(off) Driver Supply Current
Control logic
VIH
Voltage Input
VIL
Voltage Input
IIH
Input Current
IIL
Input Current
VREF
Reference Voltage
ICC (on) Logic Supply Current
ICC (off) Logic Supply Current
VREF/VSENSE
Current Limit Threshold (at trip
point)
TOFF
Cutoff Time
TD
Turn off Delay
Protection
Over Temperature Shutdown
OTS
Over Temperature Shutdown
Hystersis
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
Min.
APX6219
Typ. Max.
10
VOUT=VBB
VOUT=0
Sink driver, IOUT=+500mA
Sink driver, IOUT=+750mA
Source driver, IOUT=-500mA
Source driver, IOUT=-750mA
VR=28V
Sink diode
Source diode IF=750mA
Both bridges ON, no load
Both bridges OFF
All inputs
All inputs
VIN=2.4V
VIN=0.8V
<1
<-1
0.4
0.8
1.1
1.4
<1
1.6
1.6
14
2
2.4
<1
-5
1.5
I0=I1=0.8V, no load
I0=I1=2.4V, no load
I0=I1=0.8V
I0=2.4V,I1=0.8V
I0=0.8V,I1=2.4V
RT=56KΩ, CT=820pF
Hystersis
4
28
50
-50
0.7
1.1
1.4
1.7
50
2
2
25
10
9.5
13.5
25.5
47
8
10
15
30
45
2
0.8
20
-50
7.5
57
14
10.5
16.5
34.5
Unit
V
µA
V
µA
V
mA
mA
V
V
µA
µA
V
mA
mA
µs
µs
150
°C
20
°C
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APX6219
PWM Output Current Waveform
V PHASE
+
IO U T 0
I TR IP
I TR IP =V R E F /10 R S
t off
td
Load Current Paths
VBB
motor
B ridge on
S ource off
Rs
A ll off
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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APX6219
Principle Operating Sequence
Stand-by
Half-step motor drive
1
2 3
4
5
6 7
8
Full-step motor drive
1
2
3
4 5 6 7
8
I01
I11
Phase1
x
x
x
Phase2
x
I02
I12
Motor1 Current
500mA
333 mA
-167 mA
-333 mA
-500mA
Motor2 current
500mA
333 mA
167 mA
-333 mA
-500mA
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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APX6219
PWM Current-Control Circuitry
V BB
"
m o to r
O U TA
O U TB
V RE F
#
S e nse
!
2 0 kΩ
÷1 0
C O M P IN
4 0 kΩ
1 0 kΩ
CMP
+
O ne
sho t
"
RC
I0
Rs
1Ω
CC
Phase
OU TA
OU TB
H
H
L
L
L
H
RC
CT
820pf
RT
5 6 kΩ
I1 %
True Table
S o urce
D isa b le
Typical Application Circuit
STEPPER
MOTOR
1
R T= 56K Ω , C T=820p F
R C=1K Ω , C C=820pF
R S= 1Ω
2
RS
RC
CC
Fom µ P
V REF2
RT
V BB
24
RS
+
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
CT
0 .1 µ F
RC
100µ F
CC
Fom µ P
V REF1
0 .1 µ F
CT
RT
V CC
0 .1 µ F
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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APX6219
Typical Characteristics
All Bridge Enable
All Bridge Disable
I0
I0
I1
I1
IL(0~300mA)
IL(0~300mA)
VOUT1A (1V/div)
VOUT1A(1V/div)
Time ( 0.1ms/div)
Time ( 0.1ms/div)
I0, I1 Threshold Voltage
PHASE Pin Threshold Voltage
2.5
1.8
VPHASE+
1.6
2
1.4
1.2
1.5
PHASE (V)
I0 , I1(V)
IIO=0µA
VBB=12V
1
VPHASE-
1
IPHASE+=IPHASE-=0µA
VBB=12V
0.8
0.6
0.4
0.5
0.2
0
0
4
4.5
5
5.5
6
4
VCC (V)
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
4.5
5
5.5
6
VCC (V)
8
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APX6219
Typical Characteristics
Output Saturation Voltage
RTCT vs. Cut Off Time
900
110
800
100
700
90
Sink
Source
80
RT (kΩ)
IE (mA)
600
500
400
820pF
CT=470pF
1000pF
70
60
300
50
200
40
100
30
V CC=5V
VBB=12V
20
0
0
0.25
0.5
0.75
1
1.25
1.5
0
1.75
VCE (V)
20
30
40
50
60
70
80
90 100
Cut Off Time(µs)
Operating Waveform1
VPHASE1(5V/div)
10
Operating Waveform2
RT=56kΩ,CT=820pF,
RC=1kΩ,CC=820pF
RT=56kΩ,CT=820pF,
RC=1kΩ,CC=820pF
IL(300mA~-300mA)
VCOMP INPUT1
IL(500mA~-500mA)
VRC1(1.6V~4.2V)
VOUT1A(10V/div)
VOUT1A(10A/div)
VOUT1B(10V/div)
Time (1ms/div)
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
Time (0.1ms/div)
9
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APX6219
Typical Characteristics
Half Stage Operation
VOUT1A(10V/div)
VOUT1B(10V/div)
IL(300mA~-300mA)
V RC1(1.6V~4.2V)
Time (5ms/div)
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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APX6219
Application Information
PWM Current Control
Logic Control Of Output Current
The APX6219 dual bridge is designed to drive both
windings of a bipolar stepper motor. Output current is
sensed and controlled independently in each bridge
by an external sense resistor (RS), internal comparator,
and monostable multivibrator. When the bridge is
turned on, current increases in the motor winding and
it is sensed by the external sense resistor until the
sense voltage (VCOMPIN) reaches the level set at the
Two logic level inputs (l0 and I1) allow digital selection
of the motor winding current at 100%, 67%, 33%, or
0% of the maximum level per the table. The 0% output current condition turns off all drivers in the bridge
and can be used as an OUTPUT Disable/Enable
function.
During half-step operations, the l0 and l1 allow the µP
to control the motor at a constant torque between all
positions in an eight-step sequence. This is accomplished by digitally selecting 67% drive current when
two phases are on. When all drivers are turn off will
make rapid current decay when phases be changed.
This helps to ensure proper motor operation at high
step rates.
comparator’s input:
ITRIP = VREF/10 RS
The comparator then triggers the monostable which
turns off the source driver of the bridge. The actual
load current peak will be slightly higher than the trip
point (especially for low-inductance loads) because of
the internal logic and switching delays. This delay (TD)
is typically 2µs. After turn-off, the motor current
decays, going through the ground-clamp diode and
sink transistor (source off). The source driver’s off time
is determined by the external RC timing components,
where TOFF = RTCT within the range of 30kΩ to 100kΩ
and 470pF to 1000pF.When VRC drop to certain
voltage, the source driver will be re-enabled automatically (bridge on), the winding current is again limited
at the desired level.
The logic control inputs can also be used to select a
reduced current level (and reduced power dissipation)
for ‘hold’ conditions and/or increased current (and available torque) for start-up conditions.
General
The PHASE input to each bridge determines the direction motor winding current flows. An internally generated deadtime (approximately 2µs) prevents shoot
through that can occur when switching the PHASE
input. Thermal protection circuitry turns off all drivers
when the junction temperature reaches +150°C. It is
only intended to protect the device from failures due
to excessive junction temperature and should not imply that output short circuits are permitted. The output drivers are re-enabled when the junction temperature cools to +130°C.
Loads with high VBB, low L , high-frequency and low
current will may result in high turn-on current peaks.
This peak (appearing across RS) will attempt to trip
the comparator, resulting in erroneous current control
or high-frequency oscillations. An external RCCC time
delay should be used to form low pass filter to reduce
noise to avoid the comparator’s fault operation. The
locations of RC, CC, RC components should be as close
The APX6219 output drivers are optimized for low output saturation, less than 2V (source plus sink) at loading 500mA.Under normal operating conditions, this
allows continuous operation of both bridges simultaneously at 750mA (such as Typical Application).
to the APX6219 as possible.
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
11
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APX6219
Package Information
SO – 300mil ( Reference JEDEC Registration MS-013)
D
N
H
GAUGE
PLANE
E
1 2 3
A
Millimeters
1
A1
B
e
L
Variations- D
Inches
Variations- D
Dim
Min.
Max.
Variations
Min.
Max.
Dim
Min.
Max.
Variations
Min.
Max.
A
2.35
2.65
SO-16
10.10
10.50
A
0.093
0.1043
SO-16
0.398
0.413
A1
0.10
0.30
SO-18
11.35
11.76
A1
0.004
0.0120
SO-18
0.447
0.463
B
0.33
0.51
SO-20
12.60
13
B
0.013
0.020
SO-20
0.496
0.512
D
See variations
SO-24
15.20
15.60
D
See variations
SO-24
0.599
0.614
E
7.40
SO-28
17.70
18.11
E
SO-28
0.697
0.713
SO-14
8.80
9.20
e
SO-14
0.347
0.362
e
7.60
1.27BSC
0.2914
0.2992
0.050BSC
H
10
10.65
H
0.394
0.419
L
0.40
1.27
L
0.016
0.050
N
See variations
N
See variations
0°
φ1
φ1
8°
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
12
0°
8°
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APX6219
Physical Specifications
Terminal Material
Lead Solderability
Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn
Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3.
Reflow Condition
(IR/Convection or VPR Reflow)
tp
TP
C ritical Z one
T L to T P
T e m p e ra tu re
R am p-up
TL
tL
T sm ax
T sm in
R am p-down
ts
Preheat
25
t 25 °C to Peak
T im e
Classificatin Reflow Profiles
Profile Feature
Average ramp-up rate
(TL to TP)
Preheat
- Temperature Min (Tsmin)
- Temperature Max (Tsmax)
- Time (min to max) (ts)
Time maintained above:
- Temperature (TL)
- Time (tL)
Peak/Classificatioon Temperature (Tp)
Time within 5°C of actual
Peak Temperature (tp)
Ramp-down Rate
Sn-Pb Eutectic Assembly
Pb-Free Assembly
3°C/second max.
3°C/second max.
100°C
150°C
60-120 seconds
150°C
200°C
60-180 seconds
183°C
60-150 seconds
217°C
60-150 seconds
See table 1
See table 2
10-30 seconds
20-40 seconds
6°C/second max.
6°C/second max.
6 minutes max.
8 minutes max.
Time 25°C to Peak Temperature
Notes: All temperatures refer to topside of the package .Measured on the body surface.
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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APX6219
Classificatin Reflow Profiles(Cont.)
Table 1. SnPb Entectic Process – Package Peak Reflow Tem peratures
3
3
Package Thickness
Volum e m m
Volum e m m
<350
≥350
<2.5 m m
240 +0/-5°C
225 +0/-5°C
≥2.5 m m
225 +0/-5°C
225 +0/-5°C
Table 2. Pb-free Process – Package Classification Reflow Tem peratures
3
3
3
Package Thickness
Volum e mm
Volum e mm
Volum e mm
<350
350-2000
>2000
<1.6 m m
260 +0°C*
260 +0°C*
260 +0°C*
1.6 m m – 2.5 m m
260 +0°C*
250 +0°C*
245 +0°C*
≥2.5 m m
250 +0°C*
245 +0°C*
245 +0°C*
*Tolerance: The device m anufacturer/supplier shall assure process com patibility up to and
including the stated classification tem perature (this m eans Peak reflow tem perature +0°C.
For exam ple 260°C+0°C) at the rated MSL level.
Reliability test program
Test item
SOLDERABILITY
HOLT
PCT
TST
ESD
Latch-Up
Method
MIL-STD-883D-2003
MIL-STD-883D-1005.7
JESD-22-B, A102
MIL-STD-883D-1011.9
MIL-STD-883D-3015.7
JESD 78
Description
245°C , 5 SEC
1000 Hrs Bias @ 125 °C
168 Hrs, 100 % RH , 121°C
-65°C ~ 150°C, 200 Cycles
VHBM > 2KV, VMM > 200V
10ms , Itr > 100mA
Carrier Tape
t
D
P
Po
E
P1
Bo
F
W
Ko
Ao
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
D1
14
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APX6219
Carrier Tape(Cont.)
T2
J
C
A
B
T1
Application
SOP- 24
A
B
330±1
62 ±1.5
F
D
C
12.75 ±
0.15
D1
J
T1
T2
2 ± 0.6 24.4 ± 0.2 2± 0.2
Po
P1
Ao
W
P
E
24 ± 0.3 12 ± 0.1 .75± 0.1
Bo
Ko
t
11.5 ± 0.1 1.55 +0.1 1.5+ 0.25 4.0 ± 0.1 2.0 ± 0.1 10.9 ± 0.1 15.9± 0.1 3.1± 0.1 .35±0.05
(mm)
Cover Tape Dimensions
Application
SOP- 24
Carrier Width
24
Cover Tape Width
21.3
Devices Per Reel
1000
Customer Service
Anpec Electronics Corp.
Head Office :
5F, No. 2 Li-Hsin Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : 886-3-5642000
Fax : 886-3-5642050
Taipei Branch :
7F, No. 137, Lane 235, Pac Chiao Rd.,
Hsin Tien City, Taipei Hsien, Taiwan, R. O. C.
Tel : 886-2-89191368
Fax : 886-2-89191369
Copyright  ANPEC Electronics Corp.
Rev. A.4 - Apr., 2005
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