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6269CRZ

High-Performance Notebook PWM Controller with Bias Regulator and Audio-Frequency Clamp

Intersil 

ISL6269

PHASE Pin-15 (Input)

The PHASE pin is the return current path for the UG

MOSFET driver. The PHASE pin also measures the polarity

of the low-side MOSFET drain voltage for the diode

emulation function. Connect the PHASE pin to the node

consisting of the high-side MOSFET source, the low-side

MOSFET drain, and the output inductor. Refer to Figure 1,

Typical Application Schematic.

PGOOD Pin-16 (Output)

The PGOOD pin is an open-drain output that is high

impedance when the converter is in regulation, or when the

EN pin is pulled below the falling threshold voltage VENTHF.

The PGOOD pin has three distinct pull-down impedances

that correspond to an OVP fault, OCP/SCP, or UVP and

soft-start. Connect the PGOOD pin to a pull-up resistor.

6

FN9177.1

August 7, 2006

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