2PCS02 datasheet(5/20 Pages) INFINEON

5 / 20 page

Version 2.4

22 Mar 2010

CCM-PFC

ICE2PCS02/G

Pin Configuration and Functionality

1.1

Pin Configuration

Figure 1

Pin Configuration (top view)

1.2

Pin Functionality

GND (Ground)

The ground potential of the IC.

ICOMP (Current Loop Compensation)

Low pass filter and compensation of the current control

loop. The capacitor which is connected at this pin

integrates the output current of OTA2 and averages the

current sense signal.

ISENSE (Current Sense Input)

The ISENSE Pin senses the voltage drop at the

external sense resistor (R1). This is the input signal for

the average current regulation in the current loop. It is

also fed to the peak current limitation block.

During power up time, high inrush currents cause high

negative voltage drop at R1, driving currents out of pin

3 which could be beyond the absolute maximum

ratings. Therefore a series resistor (R2) of around

220

W is recommended in order to limit this current into

the IC.

VINS (Brown-out Sense Input)

This VINS pin senses a filtered input voltage divider

and detects for the input voltage Brown-out condition.

A Brown-out condition of VINS<0.71V, shuts down the

IC. The IC turns on at VINS>1.5V.

VSENSE (Voltage Sense/Feedback)

The output bus voltage is sensed at this pin via a

resistive divider. The reference voltage for this pin is

3V.

VCOMP (Voltage Loop Compensation)

This pin provides the compensation of the output

voltage loop with a compensation network to ground

(see Figure 2).

VCC (Power Supply)

The VCC pin is the positive supply of the IC and should

be connected to an external auxiliary supply. The

operating range is between 11V and 26V. The turn-on

threshold is at 11.8V and under voltage occurs at 11V.

There is no internal clamp for a limitation of the power

supply.

GATE

The GATE pin is the output of the internal driver stage,

which has a capability of 1.5A instantaneous source

and 2.0A instantaneous sink current.

Its gate drive voltage is internally clamped at 15.0V

(typically).

Symbol

Function

GND

IC Ground

ICOMP

Current Loop Compensation

ISENSE

Current Sense Input

VINS

Brown-out Sense Input

VCOMP

Voltage Loop Compensation

VSENSE V

OUT Sense (Feedback) Input

VCC

IC Supply Voltage

GATE

Gate Drive Output

Package PG-DIP-8 / PG-DSO-8

GATE

GND

ICOMP

ISENSE

VCC

VSENSE

VINS

VCOMP

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