Data Brief
For further information contact your local STMicroelectronics sales office
July 2007 Rev 1 1/4
4
STEVAL-ISA039V1
Single phase 5A step-down converter evaluation board
based on L6727
Features
■ Input voltage: from 5V to 12V
■ Output voltage: fixed @ 1.25V but
customizable by changing resistor
■ Output current:up to 5A
■ Swicthing frequency: 300KHz
Description
The purpose of this design is to demonstrate the
key features of STMicroelectronics L6727 a new
powerful buck controller. The L6727 allow simple,
cost effective design of complete step-down
voltage regulators. Indeed it provides a full
solution by integrating a 0.8V reference, control
logic and protection, and NMOS drivers in an 8-
pin package. L6727 demo board realizes in a two-
layer PCB a step-down DC/DC converter and
shows the operation of the device in a general-
purpose low-current application. The input voltage
can range from 5V to 12V buses and the output
voltage is fixed at 1.25V. The application can
deliver an output current in excess of 5A. The
switching frequency is 300 kHz.
STEVAL-ISA039V1
www.st.com
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