MPS MP6518GF 35v, 1.5a stepper motor driver with integrated mosfet Datasheet

MP6518
35V, 1.5A Stepper Motor Driver
with Integrated MOSFETs
The Future of Analog IC Technology
DESCRIPTION
FEATURES
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The MP6518 is a stepper motor driver with a
built-in micro stepping translator. It operates
from a supply voltage of up to 35V and can
deliver motor current up to 1.5A. The MP6518
can operate a bipolar stepper motor in full-,
half-, quarter-, and eighth- step modes. Internal
safety features include over-current protection,
input over-voltage protection, UVLO and
thermal shutdown. The part has a fixed 3.3V
reference output, which allows it to operate
without any control power supply and work with
any microcontroller. Ron of the switches is as
low as 300mΩ. Current sensing is done by
external resistors.
Wide 8V to 35V Input Voltage Range
Two Internal Full Bridge PWM Converters
Low On Resistance(HS:300mΩ; LS:300mΩ)
No Control Power Supply Required
Simple Logic Interface
3.3 and 5 V Compatible Logic Supply
Full-, Half-, Quarter-, and Eighth- Step
Functionality
1.5A Maximum Output Current
Adjustable Mixed Decay Ratio
Over-Current Protection
Input OVP Function
Thermal Shutdown and UVLO Protection
Space-saving TSSOP-28-EP Package
Fault Indication Output
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The MP6518 comes in a space-saving TSSOP28 package with exposed thermal pad.
APPLICATIONS
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Bipolar Stepper Motors
Printers
Textile Machines
Security Cameras
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
3.3V
3P3VOUT
0.47uF
CPB
VIN
nHOME
1uF
MP6518
AOUT1
MS2
µC
MS3
nENBL
nSLEEP
nRSET
VREF
Exposed GND
PAD
AOUT2
SENA
SENA
BOUT1
BOUT2
MDS
ROSC
1uF
VG
STEP
MS1
100nF
VCP
nFAULT
DIR
VIN
CPA
Motor
SENB
SENB
200kΩ
MP6518 Rev. 1.11
8/22/2016
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© 2016 MPS. All Rights Reserved.
1
MP6518 –35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FET
ORDERING INFORMATION
Part Number*
MP6518GF
Package
TSSOP-28 EP
Top Marking
See Below
* For Tape & Reel, add suffix –Z (e.g. MP6518GF–Z)
TOP MARKING
MPS: MPS prefix:
YY: year code;
WW: week code:
MP6518: product code of MP6518GF;
LLLLLLLLL: lot number;
PACKAGE REFERENCE
TOP VIEW
MP6518 Rev. 1.11
8/22/2016
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2
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN ......................... –0.3V to 40V
xOUTx Voltage VA/BOUT1/2 ................ -0.7V to 40V
VCP, CPB ................................... VIN to VIN+6.5V
ESD Rating (HBD) ....................................... 2kV
SENA, SENB ......................................... 700mV
All Other Pins to AGND
(Except for 3P3VOUT and VG)
................................................. -0.3V to 6.5V
(2)
Continuous Power Dissipation (TA = +25°C)
……………………………………………....3.9W
Storage Temperature ............... -55C to +150C
Junction Temperature ............................ +150C
Lead Temperature (Solder).................... +260C
Recommended Operating Conditions
(3)
Thermal Resistance
(4)
θJA
θJC
TSSOP-28 EP (9.7mmx6.4mm)
................................................ 32 ....... 6.... C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
Supply Voltage VIN .............................. 8V to 35V
Output Current IA,BOUT................................ ±1.5A
Operating Junction Temp. (TJ). -40°C to +125°C
MP6518 Rev. 1.11
8/22/2016
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© 2016 MPS. All Rights Reserved.
3
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
ELECTRICAL CHARACTERISTICS
VIN=24V, TA = +25°C, unless otherwise noted.
Parameter
Power Supply
Input Supply Voltage
Quiescent Current
Voltage Regulator
3P3VOUT Reference Output
Internal MOSFETs
Symbol
VIN
ISLEEP
VIN=24V; nENBL=0;
nSLEEP=1, with no load
VIN=24V; nSLEEP=0
V3P3
IOUT=1mA
IQ
RHS
Output On Resistance
RLS
Body Diode Forward Voltage
Control Logic
Input Logic ‘Low’ Threshold
Input Logic ‘High’ Threshold
Condition
VF
Typ
Max
Units
8
24
35
V
7
10
mA
5
µA
3.3
3.45
V
0.30
0.35
Ω
3.2
VIN=24V, IOUT=1A,
TJ=25°C
VIN=24V, IOUT=1A,
TJ=85°C
VIN=24V, IOUT=1A,
TJ=25°C
VIN=24V, IOUT=1A,
TJ=85°C
IOUT=1.5A
VIL
All Logic Pins
VIH
All Logic Pins
IIN(H)
VIH=5V
Logic Input Current
IIN(L)
VIL=0.8V
R
Internal Pull Down Resistance
All Logic Pins
PD
nHOME nFAULT Outputs(Open-Drain Outputs)
Output Low Voltage
VOL
IO=5mA
Output High Leakage Current
VO=3.3V
IOH
Protection Circuit
VIN RISE
UVLO Rising Threshold
(5)
VHYS
UVLO Hysteresis
VOVP
Input OVP Threshold
∆V
Input OVP Hysteresis
OVP
IOCP1
Sinking
Over-Current Trip Level
IOCP2
Sourcing
tOCP
Over-Current Deglitch Time(5)
TTSD
Thermal Shutdown(5)
(5)
∆TTSD
Thermal Shutdown Hysteresis
MP6518 Rev. 1.11
8/22/2016
Min
0.32
0.30
Ω
0.35
0.32
2
-25
-8
Ω
1.3
V
0.6
V
V
µA
µA
kΩ
25
8
530
6.5
36
2.5
2.5
7
970
37.9
600
5.5
5.5
1
165
30
Ω
0.5
1
V
µA
7.7
V
mV
V
mV
A
A
µs
o
C
o
C
40
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© 2016 MPS. All Rights Reserved.
4
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
ELECTRICAL CHARACTERISTICS (continued)
VIN=24V, TA = +25°C, unless otherwise noted.
Current Control
Constant Off Time
Blanking time
Crossover Dead Time
VREF Input Current
SENx Trip Voltage
Current Trip Accuracy
Charge Pump Frequency
tOFF
tBLANK
tDT
IREF
VTRIP
∆ITRIP
fCP
Rt=200kΩ
HS off to LS on or LS off to
HS on for one bridge arm
VREF=3.3V
VREF=3.3V,
100%
(no
switch in test mode)
VREF=3.3V, 70%-100%
VREF=3.3V, 38%-64%
VREF=3.3V, 19%-30%
VREF=3.3V, <10%
20
30
2
40
400
600
645
-5
-10
-15
-20
µs
µs
ns
3.5
µA
700
mV
5
10
15
20
%
%
%
%
kHz
525
Notes:
5) Not tested in production.
MP6518 Rev. 1.11
8/22/2016
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© 2016 MPS. All Rights Reserved.
5
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=24V, IOUT=1.5A, TA=25°C, FSTEP=500Hz, Resistor+Inductor Load: R=3.3ohm, L=1.5mH/channel,
Automatic Decay, unless otherwise noted.
Steady State-Full Step
Steady State-Half Step
IOUT=1A
VSTEP
5V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
Steady State-Quarter Step
VSTEP
5V/div.
VSTEP
5V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
Steady State-Eighth Step
Power Ramp Up-Full Step
Power Ramp Up-Half Step
IOUT=1A
VSTEP
5V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
VIN
20V/div.
VIN
20V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
Power Ramp Up-Quarter Step
Power Ramp Up-Eighth Step
Sleep Recovery-Full Step
IOUT=1.8A
VIN
20V/div.
VnSLEEP
5V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
VIN
20V/div.
MP6518 Rev. 1.11
8/22/2016
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© 2016 MPS. All Rights Reserved.
6
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=24V, IOUT=1.5A, TA=25°C, FSTEP=500Hz, Resistor+Inductor Load: R=3.3ohm, L=1.5mH/channel,
Automatic Decay, unless otherwise noted.
Sleep Recovery-Half Step
Sleep Recovery-Quarter
Step
Sleep Recovery-Eighth
Step
VnSLEEP
5V/div.
VnSLEEP
5V/div.
VnSLEEP
5V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
Disable-Half Step
VnENBL
5V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
Enable-Half Step
Disable-Quarter Step
VnENBL
5V/div.
VnENBL
5V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
Enable-Quarter Step
Disable-Eighth Step
Enable-Eighth Step
VnENBL
5V/div.
VnENBL
5V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT1
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
VAOUT2
20V/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
IIOUTA
1A/div.
VnENBL
5V/div.
MP6518 Rev. 1.11
8/22/2016
www.MonolithicPower.com
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© 2016 MPS. All Rights Reserved.
7
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
PIN FUNCTIONS
Pin #
1
2
3
4,13
5
6,7
8
9
10,11
12
14
Name
CPA
CPB
VCP
VIN
AOUT1
SENA
AOUT2
BOUT2
SENB
BOUT1
nSLEEP
15
VG
16
nRSET
17
nENBL
18
19
20
21
MS3
MS2
MS1
DIR
22
STEP
23
nFAULT
24
25
26
nHOME
ROSC
MDS
27
VREF
28
3P3VOUT
MP6518 Rev. 1.11
8/22/2016
Description
Charge Pump Capacitor. Connect a 100nF ceramic capacitor between these pins.
The capacitor needs to be rated for at least the voltage applied to VIN.
Charge Pump Output. Requires a 1uF 16V ceramic capacitor to VIN.
Input Supply Voltage. Both VIN pins must be connected to the same supply.
Bridge A Output Terminal 1.
Bridge A Sense Resistor Connector. Connect to current sensor resistor for bridge A.
Bridge A Output Terminal 2.
Bridge B Output Terminal 2.
Bridge B Sense Resistor Connector. Connect to current sensor resistor for bridge B.
Bridge B Output Terminal 1.
Sleep Mode Input. Logic low to enter low-power sleep mode. Internal pull down.
Low Side MOSFETs Gate Driver. Decouple with a 1μF 16V ceramic capacitor to
GND.
Reset Input. Logic low initializes the translator and control logic circuit. Internal pull
down.
Enable Input. Logic high to disable the bridge outputs and translator operation, logic
low to enable. Internal pull down.
Mode Select. See ”Microstep Select” below for details. MS1-MS3 sets the step mode
– full-, half-, quarter-, or eighth- step. Internal pull down.
Direction Input. Logic level sets direction of rotation. Internal pull down.
Step Input. Rising edge sequences the translator and advances the motor one
increment. Internal pull down.
Fault Indication. Open-drain output type, logic low when in fault condition (OCP, OTP,
OVP).
Home Position. Open-drain output type, logic low when at home state of step table.
Constant Off Time Setting Input. Connect a resistor to GND.
Mixed Decay Setting. See “Decay Modes” below for details.
Reference Voltage Input. Voltage applied to this pin defines the current through the
motor. Can be connected to 3P3VOUT.
3.3V Regulator Output. Decouple with a 0.47μF 6.3V ceramic capacitor to GND.
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8
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
BLOCK DIAGRAM
VG
0.47µF
Internal
Reference
UVLO&
&
Internal Vcc
OVP
Regulator
3P3VOUT
3.3V
MP6518
LS Gate
Driver
VREF
1/5
DAC
nFAULT
nHOME
MS1
MS2
MS3
nRSET
µC
Gate
Driver
OCP
100nF
VCP
1µF
AOUT1
AOUT2
SENA
ROSC PWM
Control
Logic
SENA
Timer
MDS
CPB
VIN
nSLEEP
nENBL
Rt
Charge
Pump
OCP
Translator
STEP
DIR
VIN
CPA
Blanking
Time
Mixed
Decay
RSENSE
VIN
OCP
VIN
BOUT1
Gate
Driver
Motor
BOUT2
OCP
SENB
VREF
1/5
RSENSE
DAC
SENB
Figure 1: Functional Block Diagram
MP6518 Rev. 1.11
8/22/2016
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9
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
OPERATION
The MP6518 is a bipolar stepper motor driver
that integrates 8 N-Channel power MOSFETs
arranged as 2 full-bridges, with 1.5A current
capability over a wide input voltage range of 8V
to 35V. It is designed to operate bipolar stepper
motors in full-, half-, quarter-, and eighth- step
modes. The current in each of the two output
full-bridges is regulated with programmable
constant off-time PWM (pulse width modulated)
control circuitry. At each step, the current for
each full-bridge is set by the value of its
external current sense resistor, a reference
voltage (VREF), and the output voltage of its
DAC which is controlled by the output of the
translator.
Stepping
The motor moves step by step by applying a
series of pulses to the STEP pin. A rising edge
on the STEP input sequences the translator
one increment in the direction set by the level of
the DIR input. The translator controls the input
to the DACs and the direction of current flow in
each winding. The amplitude of the increment is
determined by the state of inputs MS1, MS2
and MS3 (see Table 1).
The STEP input minimum high/low pulse width
is 1us. The logic control signals MSx and DIR
require at least 200ns setup time and hold time
to the STEP rising edge.
MP6518
The motor winding currents are regulated by a
programmable constant off-time PWM current
control circuit. This operates as follows:
 Initially, a diagonal pair of MOSFETs
turns on so current can flow through the
motor winding.
 The current increases in the motor
winding, which is sensed by an external
sense resistor (RSENSE). During the initial
blanking time tBLANK, the high-side
MOSFET always turns on regardless of
current limit detection.
 When the voltage across RSENSE reaches
the current regulation threshold, the
internal current comparator either shuts
off the high-side MOSFET so the
winding inductance current freewheels
through the two low-side MOSFETs
(slow decay), or turns on the opposite
diagonal pair of MOSFETs so the
current flows back to the input (fast
decay).
 The current keeps decreasing for the
constant off-time.
 The cycle then repeats.
The constant off-time, toff, is determined by the
selection of an external resistor Rt which is
approximated by
t OFF (ns)  190  R t (k)
The full-scale (100%) current limit threshold is
calculated by
IMax LIMIT 
VREF
5  R SENSE
The DAC output reduces the VREF output to the
current sense comparator in precise steps (see
table 2 for %ITrip-LIMIT at each step).
Time Duration
Symbol Typ.
Step
minimum
HIGH
1
tA
pulse width
Step minimum LOW pulse
1
tB
width
Setup time, input change
200
tC
to STEP
Hold time, input change to
200
tD
STEP
Figure 2: Logic Timing Diagram
MP6518 Rev. 1.11
8/22/2016
Unit
µs
µs
ns
ITrip LIMIT  %ITrip LIMIT IMax LIMIT
Microstep Select (MS1, MS2, MS3)
The step mode is selected by applying logic
high and low voltages to the MS1, MS2 and
MS3 pins as shown in Table 1. The MP6518
supports full-, half-, quarter-, and eighth- step
modes
for
progressively
finer
step
ns
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10
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
resolution and control. Full step has four states
with each motor winding driven with either
70.7% maximum positive current or 70.7%
maximum negative current. This provides four
steps per electrical rotation. Half step creates 8
steps per electrical rotation. Quarter- and
eighth- step provide 16 and 32 steps per
rotation respectively. Table 2 shows the relative
current level sequence for different settings of
MSx.
Table 1: Stepping Format
MS3
L
L
L
L
H
H
H
H
MS2
L
L
H
H
L
L
H
H
MS1
L
H
L
H
L
H
L
H
STEP MODE
Full Step
Half Step
Quarter Step
Eighth Step
Reserved
Reserved
Reserved
Reserved
Decay Modes
During the PWM off time, the output current
decay can operate in slow, fast, or mixed decay,
depending on the voltage level at the MDS
input, and any current change commanded by a
STEP transition.
If the voltage on the MDS input pin is less than
2.5V, then mixed decay mode with adjustable
fast decay ratio is selected. The time that the
device operates in fast decay is approximated
by:
t FD  Vmds ( V )  0.4  t OFF
After this fast decay portion tFD, the device will
switch to slow decay mode for the remainder of
the constant off-time period. Note that if the
MDS pin is set to 0V (connected to ground),
slow decay is used for the entire off time.
If the voltage at the MDS input is greater than
2.8 V, then automatic decay mode is selected.
In automatic decay mode, if the commanded
current level is equal or higher than the level at
the previous step, then slow decay is selected;
if current level is lower than previous level, then
mixed decay with fixed 30% fast decay ratio is
selected.
nRSET, nSLEEP, and nENBL Operation
When the nRSET pin is set to low, the
excitation position is forcibly set to the home
MP6518 Rev. 1.11
8/22/2016
position. The step input signal is ignored during
this period.
Driving nSLEEP low will put the device into a
low power sleep state. In this state, the gate
drive charge pump and 3P3VOUT regulator is
stopped; all the internal circuits and H-bridge
outputs are disabled. All inputs are ignored
when nSLEEP is active low. When waking up
from sleep mode, some time (approximately 1
ms) needs to pass before issuing a STEP
command, to allow the internal circuitry to
stabilize.
The nENBL pin is used to control the output
drivers. When nENBL is low, the output Hbridge outputs are enabled, and rising edges on
the STEP pin are recognized. When nENBL is
high, the H-bridge outputs are disabled, and the
STEP input is ignored.
Blanking Time
There is usually a current spike during the
switching transition due to the body diode’s
reverse-recovery current or the distributed
inductance or capacitance. This current spike
requires filtering to prevent it from erroneously
shutting down the high-side MOSFET. An
internal fixed blanking time tBLANK blanks the
output of the current sense comparator when
the outputs are switched, which is also the
minimum on time for high-side MOSFET.
In automatic decay mode, if the current limit is
reached within the blanking time, the mixed
decay with 30% fast decay ratio is performed
after the blanking time.
Charge Pump
The MP6518 integrates an internal charge
pump to generate gate drive voltage for the
high-side MOSFETs. The charge pump
requires a 100nF ceramic capacitor (rated for at
least the voltage applied to VIN) to be
connected between the CPA and CPB pins,
and a 1uF 16V ceramic capacitor connected
between VCP and VIN.
Fault
MP6518 provides a nFAULT pin, which reports
the system if the protection circuit operates by
detecting a fault condition such as OCP, OTP
and OVP. This pin is of the open-drain output
type and will be driven low once
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11
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
the fault condition occurs. If the fault condition
is released, the nFAULT pin would be pulled to
high level.
Over-Current Protection
The over-current protection circuit limits the
current through the FET by disabling the gate
driver. If the over-current limit threshold is
reached and lasts for longer than the overcurrent deglitch time, all MOSFETs in the Hbridge will be disabled and the nFAULT pin will
be driven low. The driver will remain disabled
and is reset to enable state after 5ms(typ). After
5 times auto-recovery, the chip will shutdown if
the over-current condition still exists.
Over-current conditions on both high and low
side devices; i.e., a short to ground, supply, or
across the motor winding will all result in an
over-current shutdown. Note that over-current
protection does not use the current sense
circuitry used for PWM current control, and is
independent of the sense resistor value or
VREF voltage.
Over-Voltage Protection
If the input voltage on the VIN pin is higher than
the OVP threshold, the H-bridge output will be
disabled and the nFAULT pin will be driven low.
This protection is released when VIN drops to a
safe level.
Input UVLO Protection
If at any time the voltage on the VIN pin falls
below the under-voltage lockout threshold
voltage, all circuitry in the device will be
disabled and internal logic will be reset.
Operation will resume when VIN rises above
the UVLO threshold.
Thermal Shutdown
If the die temperature exceeds safe limits, all
MOSFETs in the H-bridge will be disabled and
the nFAULT pin will be driven low. Once the die
temperature has fallen to a safe level operation
will automatically resume.
MP6518 Rev. 1.11
8/22/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
12
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
Table 2: Relative Current Level Sequence
Home position is at step angle 45°
1/8 Step
#
1/4 Step
#
Half
Step #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
1
MP6518 Rev. 1.11
8/22/2016
Full
Step #
2
3
2
1
4
5
3
6
7
4
2
8
9
5
10
11
6
3
12
13
7
14
15
16
8
4
Phase A
Current %ITripLIMIT (%)
Phase B
Current %ITRIPLIMIT (%)
Step Angle
(°C)
100.00
98.08
92.39
83.15
70.71
55.56
38.27
19.51
0.00
-19.51
-38.27
-55.56
-70.71
-83.15
-92.39
-98.08
-100.00
-98.08
-92.39
-83.15
-70.71
-55.56
-38.27
-19.51
0.00
19.51
38.27
55.56
70.71
83.15
92.39
98.08
0.00
19.51
38.27
55.56
70.71
83.15
92.39
98.08
100.00
98.08
92.39
83.15
70.71
55.56
38.27
19.51
0.00
-19.51
-38.27
-55.56
-70.71
-83.15
-92.39
-98.08
-100.00
-98.08
-92.39
-83.15
-70.71
-55.56
-38.27
-19.51
0.0
11.3
22.5
33.8
45.0
56.3
67.5
78.8
90.0
101.3
112.5
123.8
135.0
146.3
157.5
168.8
180.0
191.3
202.5
213.8
225.0
236.3
247.5
258.8
270.0
281.3
292.5
303.8
315.0
326.3
337.5
348.8
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
13
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
IA
IB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Figure 3a: Full Step (4 Step Sequences)
Figure 3b: Half Step (8 Step Sequences)
MP6518 Rev. 1.11
8/22/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
14
nHOME
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
Figure 3c: Quarter Step (16 Step)
IA
IB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Figure 3d: Eighth Step (32 Step)
MP6518 Rev. 1.11
8/22/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
15
MP6518 – 35V, 1.5A MICROSTEPPING MOTOR DRIVER WITH INTEGRATED FETS
PACKAGE INFORMATION
TSSOP-28 EP
6.00
TYP
9.60
9.80
0.65
BSC
0.40
TYP
28
15
1.60
TYP
4.30
4.50
PIN 1 ID
3.20
TYP
6.20
6.60
5.80
TYP
14
1
TOP VIEW
RECOMMENDED LAND PATTERN
0.80
1.05
1.20 MAX
SEATING PLANE
0.19
0.30
0.65 BSC
0.00
0.15
0.09
0.20
SEE DETAIL "A"
FRONT VIEW
SIDE VIEW
GAUGE PLANE
0.25 BSC
5.40
5.90
0o-8o
DETAIL
2.60
3.10
BOTTOM VIEW
0.45
0.75
A
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
5) DRAWING CONFORMS TO JEDEC MO-153, VARIATION AET.
6) DRAWING IS NOT TO SCALE.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP6518 Rev. 1.11
8/22/2016
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
16