L6393DTR STMicroelectronics, L6393DTR Datasheet - Page 15

• Manufacturer Part Number: L6393DTR
• Description: IC GATE DRIVER HALF BRDGE SOIC14
• Manufacturer: STMicroelectronics
• Type: High Side/Low Sider

Specifications of L6393DTR

• Configuration: Half Bridge
• Input Type: Non-Inverting
• Delay Time: 125ns
• Current - Peak: 270mA
• Number Of Configurations: 1
• Number Of Outputs: 2
• High Side Voltage - Max (bootstrap): 600V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Product: Half-Bridge Drivers
• Rise Time: 75 ns
• Fall Time: 35 ns
• Propagation Delay Time: 125 ns
• Supply Voltage (max): 21 V
• Supply Voltage (min): - 0.3 V
• Supply Current: 270 mA
• Maximum Power Dissipation: 800 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Bridge Type: Half Bridge
• Maximum Turn-off Delay Time: 200 ns
• Maximum Turn-on Delay Time: 200 ns
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 1
• Output Voltage: 580 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8323-2

L6393
The following equation is useful to compute the drop on the bootstrap DMOS:
where Q
bootstrap DMOS, and T
For example: using a power MOS with a total gate charge of 30 nC the drop on the
bootstrap DMOS is about 1 V, if the T
V
is too high, or the circuit topology doesn’t allow a sufficient charging time, an external diode
can be used.
Figure 7.
drop
has to be taken into account when the voltage drop on C
gate
is the gate charge of the external power MOS, R
Bootstrap driver
charge
V
drop
is the charging time of the bootstrap capacitor.
Doc ID 14497 Rev 4
=
V
I
ch
drop
arg
charge
e
=
R
dson
30nC
-------------- - 120Ω 0.7V
5μS
is 5 µs. In fact:
→
⋅
V
drop
=
∼
------------------ - R
T
Q
ch
gate
arg
e
DSon
BOOT
dson
is the on resistance of the
is calculated: if this drop
Bootstrap driver
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