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www.active-semi.com

Copyright © 2014 Active-Semi, Inc.

Active-Semi Proprietary―For Authorized Recipients and Customers

ActivePSR

ActivePSR

FEATURES

Technology

Frequency

Compensation

voltage, Output Short Protections

CEC Average Efficiency Standards

APPLICATIONS

E-books

and Other

GENERAL DESCRIPTION

The ACT411 is a high performance peak current

accurate voltage regulation without the need of an

opto-coupler or reference device.

The ACT411 is designed to achieve less than

100mW Standby Power. By applying frequency fold

back and

ActiveQR

TM

technology,

ACT411

exceeds the latest ES2.0 efficiency standard.

ACT411 integrates comprehensive protection. In

case of over temperature, over voltage, short

winding, short current sense resistor, open loop

and overload conditions, it would enter auto restart

mode including cycle-by-cycle current limiting.

ACT411 is to achieve no overshoot and very short

rise time even with big capacitive load (4000µF)

with the built-in fast and soft start process, .

The Quasi-Resonant (QR) operation mode can

effectively improve efficiency, reduce the EMI noise

and further reduce the components in input filter.

ACT411 is idea for application up to 36 Watt.

Figure 1:

Simplified Application Circuit

ACT411

Rev 4, 27-Feb-14