Q67040-S4549-A102 datasheet(6/27 Pages) INFINEON

Part #	Q67040-S4549-A102

Description	Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell

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Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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6 / 27 page

Version 2.0

6

15 May 2003

F3

ICE3DS01L/LG

Pin Configuration and Functionality

1.3

Pin Functionality

SoftS (Soft Start & Auto Restart Control)

The SoftS 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 error

detection. Furthermore the blanking window for high

load jumps is adjusted by means of the external

capacitor connected to SoftS.

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. The FB-

Signal controls in case of light load the Active Burst

Mode of the controller.

CS (Current Sense)

The Current Sense pin senses the voltage developed

on the series resistor inserted in the source of the

external PowerMOS. If CS reaches the internal

threshold of the Current Limit Comparator, the Driver

output is immediately switched off. Furthermore the

current

information

is

provided

for

the

PWM-

Comparator to realize the Current Mode.

Gate

The Gate pin is the output of the internal driver stage

connected to the Gate of an external PowerMOS.

HV (High Voltage)

The HV pin is connected to the rectified DC input

voltage. It is the input for the integrated 500V Startup

Cell.

VCC (Power supply)

The VCC pin is the positive supply of the IC. The

operating range is between 8.5V and 21V.

GND (Ground)

The GND pin is the ground of the controller.

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Manufacturer	Part #	Datasheet	Description
Infineon Technologies A...	ICE3AS02	555Kb / 22P	Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell Version 1.2, 02 Sep 2005
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Q67040-S4549-A102 Datasheet(PDF) 6 Page - Infineon Technologies AG

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