AIC1341
Pin 15: PGND:
Driver power GND pin. PGND
should be connected to a low
impedance ground plane in close
to lower N-MOSFET source.
Pin 16: LGATE: Lower N-MOSFET gate drive pin.
n TYPICAL PERFORMANCE CHARACTERISTICS
UGATE
UGATE
LGATE
LGATE
Fig.1 The gate drive waveforms
FAULT
SS
Over Load
Applied
Inductor Current
10A/div
Fig.2 Over-Current Operation on Inductor
SS
VOUT1 =3.5V
VOUT1 =2V
VOUT1 =1.3V
Fig.3 Soft start initiates PWM Output
6