ICE2AS01 datasheet(5/24 Pages) INFINEON

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Datasheet

30 Jun 2006

Preliminary Data

ICE2AS01/S01G

ICE2BS01/S01G

Figure 1

Pin Configuration (top view)

1.2

Pin Functionality

SoftS (Soft Start & Auto Restart Control)

This pin combines the function of Soft Start in case of

Start Up and Auto Restart Mode and the controlling of

the Auto Restart Mode in case of an error detection.

FB (Feedback)

The information about the regulation is provided by the

FB Pin to the internal Protection Unit and to the internal

PWM-Comparator to control the duty cycle.

Isense (Current Sense)

The Current Sense pin senses the voltage developed

on the series resistor inserted in the source of the

external Power Switch. When Isense reaches the

internal threshold of the Current Limit Comparator, the

Driver output is disabled. By this mean the Over

Current Detection is realized.

Furthermore the current information is provided for the

PWM-Comparator to realize the Current Mode.

Gate (Driver Output)

The current and slew rate capability of this pin are

suited to drive Power MOSFETs.

VCC (Power supply)

This pin is the positive supply of the IC. The operating

range is between 8.5V and 21V.

To provide overvoltage protection the driver gets

disabled when the voltage becomes higher than 16.5V

during Start up Phase.

GND (Ground)

This pin is the ground of the primary side of the SMPS.

1.1

Pin Configuration

Symbol

Function

N.C.

Not connected

SoftS

Soft Start & Auto Restart Control

Regulation Feedback

Isense

Controller Current Sense Input

Gate

Driver Output

VCC

Controller Supply Voltage

GND

Controller Ground

N.C.

Not connected

GND

SoftS

Isense

N.C.

VCC

N.C.

Gate

Package PG-DIP-8

G-Package PG-DSO-8

Pin Configuration and Functionality

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