This document is a data brief for STMicroelectronics' STEVAL-ISA028V1 single phase 20A step-down converter evaluation board. The evaluation board is based on the L6727 chip and features an optimized BOM for 12V input / 1.25V output @ 20A, providing high flexibility for a wide range of designs. It supports customizable output voltage, compatibility with L6726A/L6727 controllers, and has a controller input voltage (VCC) range from 5V to 12V, with a conversion input voltage (VIN) up to 13.2V. It is compatible with DPAK / SO-8 / PowerSO-8 / PowerFLAT MOSFET, and supports multiple footprints for input and output capacitors, as well as through-hole / SMD inductor compatibility. The PCB is a 4-layer design. The evaluation board demonstrates the key features of STMicroelectronics' L6727 chip, which is a powerful buck controller that simplifies and reduces cost for the design of complete step-down voltage regulators.
The STEVAL-ISA028V1 is an evaluation board designed to demonstrate the features of the STMicroelectronics L6727, a powerful buck controller. The board implements a step-down DC/DC converter on a four-layer PCB, integrating the controller, NMOS drivers, and protection logic to simplify the design of complete voltage regulators.
| Input voltage range | 5 V to 12 V |
|---|---|
| Maximum input voltage | 13.2 V |
| Output voltage | 1.25 V |
| Output current | 20 A |
| Switching frequency | 300 kHz |
| Package compatibility | DPAK/ SO-8 / PowerSO-8 / PowerFLAT |
The switching frequency is 300 kHz.
The application can deliver an output current up to 20 A.
Yes, airflow must be applied when the current is higher than 18 A.