L6743_08 Datasheet, PDF (3/17 Pages) STMicroelectronics – High current MOSFET driver

L6743, L6743Q
Typical application circuit and block diagram
1
Typical application circuit and block diagram
1.1
Application circuit
Figure 1. Typical application circuit
VCC = 5V to 12V
CDEC
VCC
BOOT
PWM Input
PWM
UGATE
EN Input
EN
PHASE
GND
NC*
LGATE
NC*
L6743 Reference Schematic
CHF
HS
L
LS
VIN = 5V to 12V
CBULK
Vout
COUT
1.2
Block diagram
Figure 2. Block diagram
VCC
EN
PWM
15k
GND
L6743
CONTROL LOGIC
& PROTECTIONS
PWM
HS
VCC
LS
BOOT
UGATE
PHASE
LGATE
GND
3/17