L6472H STMicroelectronics, L6472H Datasheet - Page 7

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L6472H

Manufacturer Part Number
L6472H
Description
Motor / Motion / Ignition Controllers & Drivers Motor DRV SPI dSPIN 7.0A 3.0 rms 8 - 45V
Manufacturer
STMicroelectronics
Type
2 Phase Stepper Motor Driverr
Datasheet

Specifications of L6472H

Product Category
Motor / Motion / Ignition Controllers & Drivers
Rohs
yes
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
8 V to 45 V
Supply Current
0.5 mA
Operating Temperature
- 25 C to + 125 C
Mounting Style
SMD/SMT
Package / Case
HTSSOP-28
Power Dissipation
5 W

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L6472HTR
Manufacturer:
ST
0
Part Number:
L6472HTR
0
L6472
List of figures
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Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HTSSOP28 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
POWERSO36 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bipolar stepper motor control application using the L6472 . . . . . . . . . . . . . . . . . . . . . . . . . 19
Charge pump circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Normal mode and microstepping (16 microsteps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Automatic full-step switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Speed profile in infinite acceleration/deceleration mode . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Constant speed command examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Positioning command examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Motion command examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
OSCIN and OSCOUT pin configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
External switch connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Internal 3 V linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Predictive current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Non-predictive current control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Adaptive decay - fast decay tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Adaptive decay switch from normal to slow+fast decay mode and viceversa . . . . . . . . . . 36
Fast decay tuning during the falling steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
SPI timings diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Daisy chain configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Command with 3-byte argument. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Command with 3-byte response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Command response aborted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
HTSSOP28 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
POWERSO36 drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Doc ID 022729 Rev 2
List of figures
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