STEVAL-ISA048V2: 9.5V @ 1A, 4 ~ 6V in, Boost

Summary

This demonstration board is based on the ST8R00W family of synchronous step-up DC-DC converters with current output cut-off function that provide up to 1 A over an input voltage range of 4 V to 6 V and an output voltage range of 6 V to 12 V.

The ST8R00W is the continuous mode version, that guarantees the lowest switching ripple when the device is used at light load conditions.

The high switching frequency (1.2 MHz) allows the use of tiny surface-mount components.

Along with the resistor divider to set the output voltage value, an inductor and two capacitors are required. A low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR surface-mounted ceramic capacitors.

Specifications

Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 497-6377-ND
Eval Board Supplier STMicroelectronics
Eval Board Board not Stocked
Topology Step Up
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 9.5 V
Current Out 1 A
Voltage In 4 ~ 6 V
Efficiency @ Conditions >88%, 5V in, 8V @ 0.6 ~ 1 A
Voltage Out Range 6 ~ 12 V
Features Light Load Mode
Shutdown, Enable, Standby
Thermal Protection
Switching Frequency 1.2 MHz
Standby Current [Typical] 750 µA
Quiescent Current [Typical] 10 mA
Component Count + Extras 6 + 2
Internal Switch Yes
Design Author STMicroelectronics
Application / Target Market
Standby Current [Maximum]
Quiescent Current [Maximum]
Main I.C. Base Part ST8R00W
Date Created By Author
Date Added To Library 2017-05

Support Documents & Media

STEVAL-ISA048V2 - User Guide - AN2627 ST8R00 /W - Datasheet

Media

STEVAL_ISA048V2_Schematic.JPG STEVAL_ISA048V2_Board.JPG STEVAL_ISA048V2_Chart.JPG