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 TEA1530AT can be used in Fixed Frequency 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 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 TEA1530AT enables highly efficient and reliable supplies to be designed easily.
2. Features
2.1 Distinctive features
n Universal mains supply operation (70 V to 276 V AC)
n High level of integration, resulting in a very low external component count
n Fixed frequency operation
2.2 Green features
n Cycle skipping mode at very low loads; input power < 300 mW at no-load operation for
a typical adapter application
n On-chip start-up current source.
2.3 Protection features
n Safe restart mode for system fault conditions
n Undervoltage protection (foldback during overload)
n IC OverTemperature Protection (OTP) (latched)
n Low and adjustable OverCurrent Protection (OCP) trip level
n Soft (re)start
n Mains voltage-dependent operation-enabling level
n General purpose input for latched or safe restart protection and timing, e.g. to be used
for overvoltage protection (OVP), output short-circuit protection or system OTP.
TEA1530AT
GreenChipäII SMPS control IC
Rev. 01 — 18 May 2005 Objective data sheet