APW7098 Datasheet, PDF (13/30 Pages) Anpec Electronics Coropration – Two- Phase Buck PWM Controller with Integrated MOSFET Drivers

APW7098
Pin Description (Cont.)
PIN
NO.
NAME
24
PHASE1
25
PGND
FUNCTION
Switch Node for Channel 1. Connect this pin to the source of high-side MOSFET and the drain of
the low-side MOSFET. This pin is used as sink for UGATT1 driver. This pin is also monitored by
the adaptive shoot-through protection circuitry to determine when the high-side MOSFET has
turned off. An Schottky diode between this pin and the ground is recommended to reduce
negative transient voltage, which is common in a power supply system.
Power Ground for the low-side gate drivers. Connect this pin to the source of low-side MOSFETs.
This pin is used as sink for LGATE1 and LGATE2 drivers.
Copyright © ANPEC Electronics Corp.
13
Rev. A.6 - Oct., 2009
www.anpec.com.tw