STEVAL-ISA043V2:1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06

This demonstration board, based on the ST1S06, is an adjustable current-mode PWM synchronous, step-down DC-DC converter with inhibit function. It is optimized for powering all low-voltage applications and, more generally, to replace the high-current linear solution when the power dissipation may cause overheating of the application environment.

It provides up to 1.5 A over an input voltage range of 2.5 V to 5.5 V.

A high switching frequency (1.5 MHz) enables the use of tiny surface-mounted components (SMD). In addition to the resistor divider used to set the output voltage value, only an inductor and two capacitors are required.

Moreover, low output ripple is guaranteed by the current-mode PWM topology and by the use of low series resistance (ESR) SMD ceramic capacitors.

The device is thermal protected and current limited to prevent damage due to accidental short circuits.

It is a complete 1.5 A switching regulator with its internal compensation eliminating the need for additional components.

The constant-frequency, current-mode, PWM architecture and stable operation with ceramic capacitors results in a low, predictable output ripple. To clamp the error amplifier reference voltage, this device includes a soft-start control block generating a voltage ramp.

The ST1S06 is available in a 6L-DFN 3x3 package.

Key Features

  • Adjustable current-mode pulse width modulation (PWM) synchronous, step-down DC-DC converter with inhibit function
  • Input voltage, Vin: 2.5 V to 5.5 V
  • Output voltage, Vout: 3.3 V
  • Output current, Iout: 1.5 A
  • Switching frequency: 1.5 MHz
  • RoHS compliant
Product Specifications
DescriptionVersionSize
DB1172: 1.5 A /1.2 V high-frequency synchronous buck converter demonstration board based on the ST1S061.177 KB
Application Notes
DescriptionVersionSize
AN2371: ST1S06 high frequency synchronous buck converter2.2172 KB
Presentations
DescriptionVersionSize
Evaluation board presentation1.1446 KB
Board Manufacturing Specifications
DescriptionVersionSize
PCB layout1.031 KB
Bill of Materials
DescriptionVersionSize
Bill of materials1.046 KB
Schematic Packs
DescriptionVersionSize
Board schematic1.038 KB
License Agreement
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
Sample & Buy
Part NumberCore ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEVAL-ISA043V2ST1S06PUR44.101NECEAR99ITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA043V2CARDIndustrialEcopack2
1.5 A /1.2 V high-frequency synchronous buck converter demonstration board based on the ST1S06 STEVAL-ISA043V2
ST1S06 high frequency synchronous buck converter STEVAL-ISA043V2
ST1S06 high frequency synchronous buck converter STEVAL-ISA043V2
ST1S06 high frequency synchronous buck converter STEVAL-ISA043V2
ST1S06 high frequency synchronous buck converter STEVAL-ISA043V2
ST1S06 high frequency synchronous buck converter STEVAL-ISA043V2
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