Innovative Power

TM

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ActiveSwitcher

ACT30

Rev 5, 05-Jun-09

High Performance Off-Line Controller

ActiveSwitcher

FEATURES

Flyback Use

APPLICATIONS

GENERAL DESCRIPTION

The ACT30 is a high performance green-energy off-

line power supply controller. It features a scalable

driver for driving external NPN or MOSFET

transistors

for

line

voltage

switching.

This

proprietary architecture enables many advanced

features to be integrated into a small package

(TO-92 or SOT23-B), resulting in lowest total cost

solution.

The ACT30 design has six internal terminals and is

a pulse frequency and width modulation IC with

many flexible packaging options. One combination

of internal terminals is packaged in the space-

saving TO-92 package (A/B versions) for 65kHz or

100kHz switching frequency and with 400mA or

800mA current limit.

Consuming only 0.15W in standby, the IC features

over-current, hiccup mode short circuit, and under-

voltage protection mechanisms.

The ACT30 is ideal for use in high performance

universal adaptors and chargers. For highest

performance versus cost and smallest PCB area,

use the ACT30 in combination with the ACT32

CV/CC Controller.

D1

+

HIGH VOLTAGE DC

C1

R2

D2

R1

GND

VDD

DRV

Q1

OPTOCOUPLER

IC1

Figure 1:

Simplified Application Circuit

Active-Semi