Single phase step-down converter evaluation board
Features
■ BOM optimized for 12 V input / 1.25 V output @
20 A
■ High flexibility to host wide range designs
■ Customizable output voltage
■ L6726A / L6727 compatibility
■ Controller input voltage (V
12 V
■ Conversion input voltage (V
■ DPAK / SO-8 / PowerSO-8 / PowerFLAT
MOSFET compatibility
■ Multi-footprint for input and output capacitors
■ Through-hole / SMD inductor compatibility
■ 4-layer PCB
Description
) range from 5 V to
CC
) up to 13.2 V
IN
STEVAL-ISA027V1
based on the L6726A
Data Brief
STEVAL-ISA027V1
The purpose of this design is to demonstrate the
key features of STMicroelectronics' L6726A, a
new powerful new buck controller. The L6726A
allows the simple and cost effective design of
complete step-down voltage regulators. Indeed,
and provides a full solution by integrating an 0.8 V
reference, control logic and protection, and NMOS
drivers in an 8-pin package. Moreover, it features
a simple control loop with transconductance error
amplifier and soft-start programmability. The
L6726A evaluation board implements a step-down
DC-DC converter, in a four-layer PCB, and
demostrates the operation of the device in a
general purpose application. The input voltage
can range from 5 V to 12 V and the output voltage
is fixed at 1.25 V. The application can deliver an
output current up to 20 A, with a switching
frequency of 270 KHz.
December 2007 Rev 2 1/4
For further information contact your local STMicroelectronics sales office
www.st.com
4
Board schematic STEVAL-ISA027V1
1 Board schematic
Figure 1. Schematic
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STEVAL-ISA027V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
10-Jul-2007 1 Initial release
06-Dec-2007 2 Content reworked to improve readability, no technical changes.
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STEVAL-ISA027V1
y
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