L6208PD STMicroelectronics, L6208PD Datasheet - Page 20

• Manufacturer Part Number: L6208PD
• Description: IC DVR STEPPER MOTOR 36POWERSOIC
• Manufacturer: STMicroelectronics
• Type: Driverr

Specifications of L6208PD

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 2
• Current - Output: 5.6A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 36-PowerSOIC
• Operating Supply Voltage: 8 V to 52 V
• Supply Current: 0.01 A
• Mounting Style: SMD/SMT
• For Use With: 497-5488 - EVAL BOARD FOR L6208N DIP497-4136 - EVAL BOARD FOR L6208 SERIES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-1425-5; 497-1425-5; 497-4214-5

L6208
Output Current Capability and IC Power Dissipation
In Fig. 24, 25, 26 and 27 are shown the approximate relation between the output current and the IC power dis-
sipation using PWM current control driving a two-phase stepper motor, for different driving sequences:
– HALF STEP mode (Fig. 24) in which alternately one phase / two phases are energized.
– NORMAL DRIVE (FULL-STEP TWO PHASE ON) mode (Fig. 25) in which two phases are energized
– WAVE DRIVE (FULL-STEP ONE PHASE ON) mode (Fig. 26) in which only one phase is energized at
– MICROSTEPPING mode (Fig. 27), in which the current follows a sine-wave profile, provided through
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 guar-
antee a safe operating junction temperature (125°C maximum).
Figure 24. IC Power Dissipation versus Output Current in HALF STEP Mode.
Figure 25. IC Power Dissipation versus Output Current in NORMAL Mode (full step two phase on).
20/27
during each step.
each step.
the V
ref
pins.
P
P
D
D
[W ]
[W]
10
10
8
6
4
2
0
8
6
4
2
0
0
0
0.5
0.5
NORM AL DRIVE
HALF STEP
1
1
I
I
OUT
OUT
1.5
1.5
[A]
[A ]
2
2
2.5
2.5
3
3
I
I
A
B
I
I
A
B
Test Conditions:
Supply Voltage = 24V
Test Conditions:
Supply Volt age = 24 V
I
OUT
I
No PWM
OUT
f
SW
I
No PWM
f
= 30 kHz (slow decay)
OUT
SW
= 30 kHz (slow decay)
I
OUT