2AS01 datasheet(3/24 Pages) INFINEON

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Datasheet

30 Jun 2006

Type

Frequency

Package

ICE2AS01

100kHz

PG-DIP-8

ICE2AS01G

100kHz

PG-DSO-8

ICE2BS01

67kHz

PG-DIP-8

ICE2BS01G

67kHz

PG-DSO-8

ICE2AS01/S01G

ICE2BS01/S01G

P-DIP-8-4

PG-DIP-8

P-DSO-8-3

PG-DSO-8

Soft Start

VCC

Start-up

VCC

Converter

DC Output

ICE2AS01(G) / ICE2BS01(G)

Snubber

Power

Management

Protection Unit

Soft-Start Control

PWM Controller

Current Mode

85 ... 270 VAC

Feedback

Typical Application

Low Power

StandBy

Precise Low Tolerance

Peak Current Limitation

Sense

Isense

GND

SoftS

Gate

Off-Line SMPS Current Mode Controller

Product Highlights

• Enhanced Protection Functions all

with Auto Restart

• Lowest Standby Power Dissipation

• Very Accurate Current Limiting

• PB-free Plating and RoHS compliant

Features

• Only few external Components required

• Input Undervoltage Lockout

• 67kHz/100kHz fixed Switching Frequency

• Max Duty Cycle 72%

• Low Power Standby Mode to support

“Blue Angel” Norm

• Latched Thermal Shut Down

• Overload and Open Loop Protection

• Overvoltage Protection during Auto Restart

• Adjustable Peak Current Limitation via

External Resistor

• Overall Tolerance of Current Limiting

< ±5%

• Internal Leading Edge Blanking

• Soft Start

• Soft gate driving for Low EMI

Description

This stand alone controller provides several special

enhancements to satisfy the needs for low power standby

and protection features. In standby mode frequency

reduction is used to lower the power consumption and

provide a stable output voltage in this mode. The frequency

reduction is limited to 20kHz / 21.5 kHz (typ.) to avoid

audible noise. In case of failure modes like open loop,

overvoltage or overload due to short circuit the device

switches in Auto Restart Mode which is controlled by the

internal protection unit. By means of the internal precise

peak current limitation the dimension of the transformer and

the secondary diode can be lower which leads to more cost

efficiency.

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