STEVAL-ISA047V1屬于開發(fā)板套件編程器的評估板-DC/DC與AC/DC（離線）SMPS。由意法半導(dǎo)體集團制造生產(chǎn)的STEVAL-ISA047V1評估板 - DC/DC 與 AC/DC（離線）SMPS該系列產(chǎn)品提供了一種方便的方法，可對開關(guān)模式電源轉(zhuǎn)換所用的器件（包括 DC-DC 和 AC-DC 型）進行性能或特性評估。“穩(wěn)壓器”（包含內(nèi)部電源開關(guān)裝置）和“控制器”（設(shè)計為控制外部電源開關(guān)）之類的器件均包括在內(nèi)。

Description

This demonstration board is based on the ST1S03A, an adjustable current mode PWM step-down DC-DC converter with internal 1.5 A power switch, packaged in a 6-lead DFN 3x3 mm.

Its a complete 1.5 A switching regulator with its internal compensation eliminating additional component.

The constant frequency, current mode, PWM architecture and stable operation with ceramic capacitors results in low, predictable output ripple.

However, in order to maximize the power conversion efficiency with light load, the regulator reduces automatically the switching frequency when the output load becomes less than 250 mA typically.

Features

■ Step-down current mode PWM (1.5 MHz) DC-DC converter

■ 2 DC output voltage tolerance

■ Internal soft-start for start-up current limitation and power on delay of 50-100 μs

■ Typical efficiency: > 85

■ Inhibit function

■ 1.5 A output current capability

■ Not switching quiescent current: max 1.5 mA (overtemperature range)

■ Switch VDS: max 200 mV @ ISW = 750 mA

■ Uses tiny capacitors and inductors

■ RoHS compliant