L6228QTR STMicroelectronics, L6228QTR Datasheet - Page 25

• Manufacturer Part Number: L6228QTR
• Description: IC DVR BIPO STEP MOTOR 32-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Bipolar Stepper Motor Driverr

Specifications of L6228QTR

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 1.4A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, 32-VFQFPN
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 48 V
• For Use With: 497-6818 - EVAL BOARD FOR L6228Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6864-2; L6228QTR

L6228Q
6
Output current capability and IC power dissipation
In
between the output current and the IC power dissipation using PWM current control driving
a two-phase stepper motor, for different driving sequences:
●
●
●
●
For a given output current and driving sequence the power dissipated by the IC can be
easily evaluated, in order to establish which package should be used and how large must be
the on-board copper dissipating area to guarantee a safe operating junction temperature
(125 °C maximum).
Figure 26. IC power dissipation versus output current in HALF STEP mode
Figure
HALF STEP mode
energized.
NORMAL DRIVE (FULL-STEP TWO PHASE ON) mode
phases are energized during each step.
WAVE DRIVE (FULL-STEP ONE PHASE ON) mode
phase is energized at each step.
MICROSTEPPING mode
provided through the V
P
D
26,
[W]
10
Figure
8
6
4
2
0
0 0.25 0.5 0.75 1 1.25 1.5
27,
HALF STEP
(Figure
Figure 28
I
OUT
ref
[A]
Doc ID 14321 Rev 4
pins.
(Figure
26) in which alternately one phase / two phases are
and
Output current capability and IC power dissipation
29), in which the current follows a sine-wave profile,
Figure 29
I
I
A
B
are shown the approximate relation
Test Conditions:
Supply Voltage = 24V
(Figure
I
No PWM
f
OUT
(Figure
SW
= 30 kHz (slow decay)
27) in which only one
I
OUT
27) in which two
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