NCV70501
Micro-Stepping Motor
Driver
Introduction
NCV70501 is a micro−stepping stepper motor driver for bipolar
stepper motors. The chip is connected through I/O pins and an SPI
interface with an external microcontroller. The NCV70501 contains a
current−translation table and takes the next micro−step depending on
the clock signal on the “NXT” input pin and the status of the “DIR” (=
direction) register or input pin. The chip provides an error message if
stall, an electrical error or an elevated junction temperature is detected.
It is using a proprietary PWM algorithm for reliable current control.
NCV70501 is fully compatible with the automotive voltage
requirements and is ideally suited for general−purpose low current
range stepper motor applications in the automotive, industrial,
medical, and marine environment.
Features
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MARKING
DIAGRAM
NCV70501−2G
AWLYWW
SOIC−16
CASE 751B
A
WL
Y
WW
G
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Dual H−Bridge for 2−Phase Stepper Motors
Programmable Peak−Current Up to 300 mA
On−Chip Current Translator
SPI Interface With Daisy Chain Capability
6 Step Modes from Full−Step up to 16 Micro−Steps
Fully Integrated Current−Sensing and Current−Regulation
On Chip Stall Detection
PWM Current Control with Automatic Selection of Fast and Slow
Decay
Fixed PWM Frequency
Active Fly−Back Diodes
Full Output Protection and Diagnosis
Thermal (Warning and) Shutdown
Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs, 5 V
Tolerant Open Drain Outputs
Reset Function
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
These Devices are Pb−Free and are RoHS Compliant
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PINOUT
DO
CSB
DI
GND
CLK
NXT
DIR
ERRB
1
2
3
NCV70501
4
5
6
7
8
16
15
14
13
12
11
10
9
TST
MOTXP
MOTXN
GND
VBB
MOTYP
MOTYN
RHB
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
©
Semiconductor Components Industries, LLC, 2013
March, 2013
−
Rev. 2
1
Publication Order Number:
NCV70501/D
NCV70501
VBB
Internal voltage
regulator 3.3 V
STALL
SPI
TSD
TRANSLATOR
Open /
Short
Logic &
Registers
OTP
I−sense
RHB
ERRB
POR
Band−
gap
TST
NCV70501
I−sense
EMC
P
W
M
Timebase
CLK
CSB
DI
DO
NXT
DIR
MOTXP
MOTXN
EMC
P
W
M
MOTYP
MOTYN
Figure 1. Block Diagram NCV70501
GND
Table 1. PIN LIST AND DESCRIPTION
Name
DO
CSB
DI
GND
CLK
NXT
DIR
ERRB
RHB
MOTYN
MOTYP
VBB
GND
MOTXN
MOTXP
TST
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SPI data output
SPI chip select input
SPI data input
Ground
SPI clock input
Next micro−step input
Direction input
Error Output
Run/Hold Current selection input
Negative end of phase Y coil output
Positive end of phase Y coil output
Voltage supply Input
Ground
Negative end of phase X coil output
Positive end of phase X coil output
Test pin input (to be tied to ground in normal operation)
Description
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2
NCV70501
DEVICE ORDERING INFORMATION
Part Number
NCV70501DW002G*
NCV70501DW002R2G*
Temperature Range
−40°C −
125°C
−40°C −
125°C
Package Type
SOIC−16, 150 mil
(Pb−Free)
SOIC−16, 150 mil
(Pb−Free)
Peak
Current
300 mA
300 mA
Shipping
†
Tube
Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*Qualified for automotive applications.
Table 2. ABSOLUTE MAXIMUM RATINGS
Symbol
V
BB
V
ESD
T
strg
T
J
Parameter
Analog DC supply voltage (Note 1)
Electrostatic discharges on component level (Note 2)
Storage Temperature
Junction Temperature (Note 3)
Min
−0.3
−2
−55
−50
Max
+36
+2
+160
+175
Unit
V
kV
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. For limited time < 0.5 s.
2. Human body model (100 pF via 1.5 kW, according to JEDEC EIA−JESD22−A114−B).
3. Circuit functionality not guaranteed.
Table 3. THERMAL RESISTANCE
Junction−to−Ambient
Package
SOIC−16
1S0P Board
96
2S0P Board
81
2S2P Board
72
Unit
K/W
EQUIVALENT SCHEMATICS
The following figure gives the equivalent schematics of the user relevant inputs and outputs. The diagrams are simplified
representations of the circuits used.
DIGITAL
IN
DI, CLK
NXT, DIR
RHB, CSB
Ipd
DIGITAL
OUT
ERRB,
DO
VDD
VBB
MOT
OUT
MOTXP,
MOTXN,
MOTYN,
MOTYP
Figure 2. Input and Output Equivalent Diagram
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NCV70501
ELECTRICAL SPECIFICATION
Recommended Operating Conditions
Operating ranges define the limits for functional
operation and parametric characteristics of the device. A
mission profile (Note 5) is a substantial part of the operation
conditions, hence the Customer must contact
ON Semiconductor in order to mutually agree in writing on
Table 4. OPERATING RANGES
Symbol
V
BB
T
J
V
DIGIO
Analog DC supply
Junction temperature
Digital I/Os Voltage
Parameter
the allowed missions profile(s) in the application. Note that
the functionality of the chip outside these operating ranges
is not guaranteed. Operating outside the recommended
operating ranges for extended periods of time may affect
device reliability.
Min
+6
−40
0
Max
+29
+145
(Note 4)
5.5
Unit
V
°C
V
4. Operating above thermal warning level is limited in time.
5. A mission profile describes the application specific conditions such as, but not limited to, the cumulative operating conditions over life time,
the system power dissipation, the system’s environmental conditions, the thermal design of the customer’s system, the modes, in which the
device is operated by the customer, etc.
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NCV70501
Table 5. DC PARAMETERS
The DC parameters are given for V
BB
and T
J
in the recommended operating ranges unless otherwise specified.
Convention: Currents flowing into the circuit are defined as positive.
Symbol
Supply Inputs
V
BB
I
BB
I
BBs
Motordriver
I
MDmax
(Peak)
Pin(s)
V
BB
Parameter
Remark/Test Conditions
Min
Typ
Max
Unit
Nominal operating supply range
Total current consumption (Note 9)
Sleep current (Note 10)
Unloaded outputs
6
90
29
15
150
V
mA
mA
I
MDabs
I
MDrel
R
ls
MOTXP
MOTXN
MOTYP
MOTYN
Max peak current through motor coil in normal
operation
Absolute error on coil current
Error on current ratio I
coilx
/ I
coily
On resistance LOW SIDE driver, high current
range, ambient temperature (Note 11)
On resistance low side driver, high current
range, high temperature
At I
MDmax,
Peak = 300 mA
At I
MDmax,
Peak = 300 mA
V
BB
= 12 V, T
J
= 27°C
V
BB
= 12 V, T
J
= 150°C
V
BB
= 12 V, T
J
= 27°C
V
BB
= 12 V, T
J
= 150°C
HiZ Mode
−12
−9
300
12
9
1.3
2.7
2.0
4.1
70
5.8
3.8
mA
%
%
W
W
W
W
kW
0.8
V
V
mA
4
0.8
mA
V
V
mA
1
mA
kW
9
R
hs
On resistance HIGH SIDE driver, high current
range, ambient temperature (Note 11)
On resistance high side driver, high current
range, high temperature
R
mpd
Logic Inputs
V
inL
V
inH
I
inL
I
inH
V
inL
V
inH
I
inL
I
inH
R
pd
Logic Outputs
V
OLmax
V
OHmax
I
OLmax
V
OLmax
V
OHmax
I
OLmax
T
tw
T
tsd
(Notes 6, 7)
6.
7.
8.
9.
ERRB
DO
TST0
CSB
Motor pin pulldown resistance
DI, CLK Logic low input level, max
NXT, DIR
Logic high input level, min
RHB
Logic low input level, max
Logic high input level, max
Logic low input level, max
Logic high input level, min
Logic low input level, max (Note 8)
Logic high input level, max (Note 8)
Internal pulldown resistor
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
Tested at 1 MHz frequency
3
2.4
−50
2.4
−1
Output voltage when sinking 8 mA
Maximum drain voltage
Maximum allowed drain current
Output voltage when sinking 8 mA
Maximum drain voltage
Maximum allowed drain current
Pin in open drain state
Pin in open drain state
0.4
5.5
8
0.4
5.5
8
V
V
mA
V
V
mA
Thermal Warning and Shutdown
Thermal warning
Thermal shutdown
145
T
tw
+ 20
°C
°C
No more than 100 cumulated hours in life time above T
tw.
Thermal shutdown is derived from thermal warning.
CSB has an internal weak pullup resistor of 100 kW.
Dynamic current is with oscillator running, all analogue cells active. Coil currents 0 mA, SPI active, ERRB inactive, no floating inputs, TST
input tied to GND.
10. All analog cells in powerdown. Logic powered, no clocks running. All outputs unloaded, no floating inputs.
11. Characterization value, not measured in production.
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