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Date: 9th Apr 2010
Reference design and board to develop
high-density DC-DC converter brick module
National Semiconductor by using Silicon Laboratories' isolator
technology has announced a new quarter-brick isolated DC-DC
converter evaluation board and reference design for developing
high power density DC-DC power supply modules for telecom
and industrial applications.
This reference design is based on LM5035C pulse-width modulation
(PWM) controller IC chip from National and Silicon Labs'
Si8420 ISOpro digital isolator. The evaluation DC-DC converter
board is for designing isolated 100W power supply module
in a quarter-brick form factor.
"National's LM5035C half-bridge PWM controller enables
industry leading power density and performance advantages
for small form factor DC-DC converters by integrating the
bias regulator, gate drivers and synchronous rectifier controls
into a single IC," said Jim MacDonald, marketing director
for National Semiconductor's Infrastructure Power business
unit. "The reference design with Silicon Labs enables
even further power density improvements by combining industry-leading
power control and isolation technology."
The other highlights of this reference design are:
Can be used to design 36V to 75V input half-bridge DC converter
module for embedding inside another equipment, which is
called embedded power.
Can withstand input transient up to 100V, as required in
telecom equipments
Protects the power distribution system with hiccup-mode
fault protection
"Silicon Labs' patented ISOpro digital isolation products
provide significant performance advantages including lower
power, industry-leading EMI performance and world-class
reliability using standard CMOS process technology,"
said Mark Thompson, vice president and general manager of
Silicon Labs' Embedded Mixed Signal products. "The
reference design with National Semiconductor validates our
industry-leading digital isolation technology and puts our
customers on the fast track to developing power modules
for their embedded applications."
The quarter-brick reference design is free to download
from www.national.com/rd/RDhtml/RD-183.html. Where as the
evaluation board is priced at $135. For more info visit
To learn about Silicon Laboratories ISOpro digital isolator
technology visit http://www.silabs.com/pr/isopro.
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