ST STEVAL-ISA049V1 Synchronous Dual Buck Converter with Reset Demonstration Board Based on the ST2S06A User Manual and Data Sheet
Summary
This demonstration board provides a high-efficiency, synchronous dual buck converter solution (based on ST2S06A) for converting various DC inputs down to low-voltage digital cores. Optimized for applications requiring reliable power management in ODD systems, it supports up to 0.5 A with minimal ripple and exceptional efficiency (>90%). The included manual details the board’s operation, utilizing advanced features like high-frequency switching (1.5 MHz), soft start, and current limiting protection. This tool is ideal for electrical engineers developing robust, space-saving power delivery solutions for demanding low-voltage electronics.
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STEVAL-ISA049V1
Synchronous dual buck converter with reset demonstration board based on the ST2S06A
Data brief
Features Step-down current mode PWM (1.5 MHz) DC-DC converter Fixed or adjustable output voltage from 0.8 V 2% DC output voltage tolerance Synchronous rectification Reset function Internal soft start for start-up current limitation and power ON delay of 50-100 µs Typical efficiency: > 90% 0.5 A output current capability Non-switching quiescent current: max 1 m A over temperature range RDS(on) 150 mΩ (typ.) Uses tiny capacitors and inductors
STEVAL-ISA049V1
Ro HS compliant
Description This demonstration board is based on the ST2S06A, a dual synchronous step-down DC-DC converter optimized for powering low-voltage digital cores in ODD applications and, generally, used to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 0.5 A over an input voltage range of 2.5 V to 5.5 V. A high switching frequency (1.5 MHz) allows the use of tiny surface-mount components. A resistor divider to set the output voltage value, an inductor and two capacitors are required for every channel. In addition, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR surface-mount ceramic capacitors. The demonstration board is thermal protected and current limited to prevent damage due to accidental short-circuit.
July 2009 Doc ID 15976 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com
Page Summary Contents For ST STEVAL-ISA049V1 Synchronous Dual Buck Converter with Reset Demonstration Board Based on the ST2S06A User Manual and Data Sheet
Manual Details
| Brand | Dual |
|---|---|
| Pages | 4 |
| File Size | 168.52 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What is the typical efficiency of this DC-DC converter board?
The board has a typical efficiency of over 90%.
How does the STEVAL-ISA049V1 protect against failures?
It is thermally protected and current limited to prevent damage from accidental short-circuits.
What range of input power can this converter handle?
It provides up to 0.5 A over an input voltage range of 2.5 V to 5.5 V.
What external components are necessary for output voltage setting?
A resistor divider, an inductor, and two capacitors are required for every channel.