something of TEA1521P

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something of TEA1521P

Post by yeluo on Tue Apr 19, 2011 10:27 am

The TEA1521P family is a Switched Mode Power
Supply (SMPS) controller IC that operates directly from
the rectified universal mains. It is implemented in the high
voltage EZ-HV SOI process, combined with a low voltage
BICMOS process. The device includes a high voltage
power switch and a circuit for start-up directly from the
rectified mains voltage.
A dedicated circuit for valley switching is built in (not
implemented in TEA1521PAJM versions), which makes a
very efficient slim-line electronic powerplug concept
possible.
In its most basic version of application, the TEA1521P family
acts as a voltage source. Here, no additional secondary
electronics are required. A combined voltage and current
source can be realized with minimum costs for external
components. Implementation of the TEA1521P family
renders an efficient and low cost power supply system.
FEATURES
Designed for general purpose supplies up to 50 W
Integrated power switch:
TEA1520: 48 W; 650 V
TEA1521: 24 W; 650 V
TEA1522: 12 W; 650 V
TEA1523: 6.5 W; 650 V
TEA1524: 3.4 W; 650 V.
Operates from universal AC mains supplies
(80 to 276 V)
Adjustable frequency for flexible design
RC oscillator for load insensitive regulation loop
constant
Valley switching for minimum switch-on loss (not
implemented in TEA1521PAJM versions)
Frequency reduction at low power output makes low
standby power possible (<100 mW)
Adjustable overcurrent protection
Under voltage protection
Temperature protection
Short circuit winding protection
Simple application with both primary and secondary
(opto) feedback
Available in 8-pin DIP, 14-pin SO and 9-pin DBS
packages.

yeluo

Male Number of posts : 19
Religion : Non-Muslim
Department : Electrical
Session : 2002
Residence Status : Day Scholar
Registration date : 2011-04-19

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