1.

General description

The GreenChip™II is the second generation of green Switched Mode Power Supply

(SMPS) controller ICs. Its high level of integration allows the design of a cost effective

power supply with a very low number of external components.

The TEA1532 can also be used in fixed frequency, Continuous Conduction Mode (CCM)

converter designs for low voltage, high current applications. At low power (standby) levels,

the system operates in cycle skipping mode which minimizes the switching losses during

standby.

The special built-in green functions allow the efficiency to be optimum at all power levels.

This holds for quasi-resonant operation at high power levels, as well as fixed frequency

operation with valley switching at medium power levels. At low power (standby) levels, the

system operates in cycle skipping mode with valley detection.

The proprietary high voltage BCD800 process makes direct start-up possible from the

rectified universal mains voltage in an effective and green way. A second low voltage

BICMOS IC is used for accurate, high speed protection functions and control.

The TEA1532 enables highly efficient and reliable supplies to be designed easily.

2.

Features

2.1 Distinctive features

2.2 Green features

a typical adapter application

2.3 Protection features

TEA1532

GreenChip

™II SMPS control IC

Rev. 01 — 28 May 2004

Preliminary data sheet