L6390D STMicroelectronics, L6390D Datasheet - Page 18

• Manufacturer Part Number: L6390D
• Description: IC DRIVER HV HI/LOW SIDE SOIC-16
• Manufacturer: STMicroelectronics
• Type: High Side/Low Sider

Specifications of L6390D

• Configuration: Half Bridge
• Input Type: Inverting and Non-Inverting
• Delay Time: 125ns
• Current - Peak: 290mA
• Number Of Configurations: 1
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 600V
• Voltage - Supply: 12.5 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Product: H-Bridge Drivers
• Rise Time: 120 ns
• Fall Time: 70 ns
• Supply Voltage (min): 12.5 V
• Supply Current: 290 mA
• Maximum Power Dissipation: 800 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Bridge Type: Half Bridge
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 1
• For Use With: 497-10543 - BOARD EVAL L6390/STD5N52U497-8404 - BOARD EVAL L6390/STD5NK52ZD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Bootstrap driver
18/22
Equation 3
where Q
bootstrap DMOS and T
For example: using a power MOS with a total gate charge of 30nC the drop on the bootstrap
DMOS is about 1 V, if the T
Equation 4
V
is too high, or the circuit topology doesn’t allow a sufficient charging time, an external diode
can be used.
Figure 8.
drop
V
CC
has to be taken into account when the voltage drop on C
gate
D
is the gate charge of the external power MOS, R
Bootstrap driver
BOOT
a
V
HVG
LVG
drop
charge
=
charge
I
V
BOOT
OUT
is the charging time of the bootstrap capacitor.
ch
Doc ID 14493 Rev 5
drop
arg
H.V.
is 5 μs. In fact:
e
R
=
dson
C
TO LOAD
BOOT
30nC
-------------- - 120Ω
5μs
→
V
⋅
V
CC
drop
=
∼
------------------ R
T
0.7V
Q
ch
b
dson
gate
HVG
LVG
BOOT
arg
e
is the on resistance of the
is calculated: if this drop
dson
BOOT
OUT
H.V.
D99IN1067
C
TO LOAD
BOOT
L6390