ST ISA038V1 User Manual

Single phase 5 A step-down based on PWM controller

evaluation board based on the Power Good L6728

Features

■ Input voltage range : 5 V to 12 Vdc

■ Output voltage Vout: 1.25 V

■ Output current Iout : 5 A

■ Switching frequency : 300 KHz

Description

This evaluation board is based on L6728, a
single-phase step-down controller with integrated
high-current drivers that provides complete
control logic and protection to realize in a simple
way general DC-DC converters by using a
compact VFQFPN-10 package.

The board realizes in a two-layer PCB a step­down DC-DC converter and shows the operation
of the device in a general-purpose low-current
application.

STEVAL-ISA038V1

Data Brief

STEVAL-ISA038V1

The input voltage can range from 5 V to 12 V
buses and the output voltage is fixed at 1.25 V.

The application can deliver an output current in
excess of 5 A.

The switching frequency is 300 KHz.

March 2008 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

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Circuit schematic STEVAL-ISA038V1

1 Circuit schematic

Figure 1. Schematic

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