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L6741 Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce L6741
Description  High current MOSFET driver
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6741 Fiches technique(HTML) 4 Page - STMicroelectronics

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Pins description and connection diagrams
L6741
4/16
2
Pins description and connection diagrams
Figure 3.
Pins connection (Top view)
2.1
Pin description
Table 2.
Pins descriptions
1
2
3
4
LGATE
VCC
PVCC
PHASE
GND
PWM
BOOT
UGATE
5
6
7
8
L6741
Pin n
Name
Function
1UGATE
High-side driver output.
Connect to High-Side MOSFET gate.
2BOOT
High-side driver supply. this pin supplies the high-side floating driver. Connect
through a RBOOT - CBOOT capacitor to the PHASE pin.
Internally connected to the cathode of the integrated Bootstrap diode. See
Section 5.3 for guidance in designing the capacitor value.
3PWM
Control input for the driver (5V compatible).
This pin controls the state of the driver and which external MOSFET have to be
turned-ON.
If left floating, it causes the driver to enter the High-Impedance (HiZ) state
which causes all mosfets to be OFF. See Section 5.1 for details about HiZ.
4GND
All internal references, logic and drivers are referenced to this pin. Connect to
the PCB ground plane.
5LGATE
Low-side driver output.
Connect directly to the Low-Side MOSFET gate. A small series resistor can be
useful to reduce dissipated power especially in high frequency applications.
6VCC
Device and LS driver power supply. Connect to any voltage between 5V and
12V. Bypass with low-ESR MLCC capacitor to GND.
7
PVCC
Integrated bootstrap diode anode supply.
Connect to any voltage between 5V and 12V to supply the HS driver
accordingly.
8
PHASE
High-side driver return path. Connect to the high-side MOSFET source.
This pin is also monitored for the adaptive dead-time management and Pre-OV
protection.


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