L6747A STMicroelectronics, L6747A Datasheet - Page 4

• Manufacturer Part Number: L6747A
• Description: High current MOSFET driver
• Manufacturer: STMicroelectronics

Specifications of L6747A

• Flexible Gate-drive: 5 V to 12 V compatible

Pin information and thermal data
2
2.1
4/15
Pin information and thermal data
Pin information
Figure 3.
Table 2.
Pin #
1
2
3
4
5
6
7
PHASE
LGATE
BOOT
Name
PWM
GND
VCC
Pin connection diagram (top view)
Pin descriptions
EN
BOOT
PWM
High-side driver supply.
This pin supplies the high-side floating driver. Connect through a R
C
Internally connected to the cathode of the integrated bootstrap diode.
See
Control input for the driver; 5V compatible, internally clamp to 3.3V.
This pin controls the state of the driver and which external MOSFET must be
turned ON according to EN status.
It manages the high-impedance (HiZ) state which sets all the MOSFETs to
OFF if externally set in the HiZ window (see
See
Enable input for the driver; 5V compatible, internally clamp to 3.3V.
Pull high to enable the driver based on the PWM status.
Pull low to enter HiZ state with all MOSFETs OFF, regardless of the PWM
status.
See
Device and LS driver power supply.
Connect to any voltage between 5V and 12V.
Bypass with low-ESR MLCC capacitor to GND (1µF typ).
Low-side driver output.
Connect directly to the low-side MOSFET gate. A small series resistor may be
used to reduce dissipated power, especially in high frequency applications.
All internal references, logic and drivers are referenced to this pin. Connect to
the PCB ground plane.
High-side driver return path. Connect to the high-side MOSFET source.
This pin is also monitored for adaptive dead-time management and pre-OV
protection.
Internal clamp circuitry prevents leakage from this pin in disable conditions.
VCC
BOOT
EN
Section 4.3
Section 4.1
Section 4.1
(2.2Ω - 220nF typ.) network to the PHASE pin.
Doc ID 17126 Rev 1
1
2
3
4
for guidance in selecting the capacitor value.
for details of HiZ.
for details of HiZ.
Function
8
7
6
5
UGATE
PHASE
GND
LGATE
Table
5).
BOOT
L6747A
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