STEVAL-ISA027V1
Single phase step-down converter evaluation board based on the L6726A
Data Brief
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 (VCC) range from 5 V to 12 V Conversion input voltage (VIN) up to 13.2 V DPAK / SO-8 / PowerSO-8 / PowerFLAT MOSFET compatibility Multi-footprint for input and output capacitors Through-hole / SMD inductor compatibility 4-layer PCB STEVAL-ISA027V1
Description
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
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www.st.com 4
For further information contact your local STMicroelectronics sales office
Board schematic
STEVAL-ISA027V1
1
Figure 1.
Board schematic
Schematic
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STEVAL-ISA027V1
Revision history
2
Revision history
Table 1.
Date 10-Jul-2007 06-Dec-2007
Document revision history
Revision 1 2 Initial release Content reworked to improve readability, no technical changes. Changes
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