L6227Q STMicroelectronics, L6227Q Datasheet - Page 21

• Manufacturer Part Number: L6227Q
• Description: IC DRIVER FULL BRDG PWM 32VFQFPN
• Manufacturer: STMicroelectronics
• Type: H Bridger

Specifications of L6227Q

• Input Type: Non-Inverting
• Number Of Outputs: 4
• On-state Resistance: 730 mOhm
• Current - Output / Channel: 1.4A
• Current - Peak Output: 2.8A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, 32-VFQFPN
• Product: H-Bridge Drivers
• Rise Time: 250 ns
• Fall Time: 250 ns
• Supply Voltage (min): 8 V
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Bridge Type: Full Bridge
• Maximum Turn-on Delay Time: 1900 ns
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 2
• For Use With: 497-6817 - EVAL BOARD FOR L6227Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6227Q
6
Output current capability and IC power dissipation
In
and the IC power dissipation using PWM current control driving two loads, for two different
driving types:
For a given output current and driving type 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 19. IC power dissipation vs output current with one full bridge ON at a time
Figure 20. IC power dissipation versus output current with two full bridges ON at the
Figure 19
P
P
–
–
TWO FULL BRIDGES ON AT THE SAME TIME
D
D
[W]
[W ]
One full bridge ON at a time
energized.
Two full bridges ON at the same time
time are energized.
10
10
8
6
4
2
0
8
6
4
2
0
ONE FULL BRIDGE ON AT A TIME
and
0
same time
0
0.25 0.5 0.75 1
0.25 0.5 0.75 1
Figure 20
I
I
OUT
OUT
are shown the approximate relation between the output current
[A ]
[A]
1.25 1.5
1.25 1.5
Output current capability and IC power dissipation
(Figure
I
I
I
I
19) in which only one load at a time is
A
B
A
B
(Figure
20) in which two loads at the same
Test Conditions:
Supply Volt age = 24 V
Test Conditions:
Supply Voltage = 24V
I
OUT
I
OUT
No PW M
f
I
No PWM
f
SW
OUT
SW
= 3 0 kHz (slow decay)
= 30 kHz (slow decay)
I
OUT
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