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                基于A6986H的38 V,2 A同步降压型开关稳压器评估板

                STEVAL-ISA205V1

                 
                设计简介

                The STEVAL-ISA205V1 product evaluation board is based on the synchronous step-down switching regulator A6986H that can deliver up to 2 A and withstand cold cranking across 100% duty cycle, which, along with its wide input operating voltage range, render the A6986H the ideal choice for battery powered automotive systems.

                Synchronous rectification helps to achieve higher efficiency at full load as well as application compactness, while high-frequency switching (programmable up to 2 MHz) helps to cut power passive costs and size, while staying outside of the AM band.
                The device can operate in a Low Consumption Mode (LCM) with a quiescent current down to 30 μA at VIN?=?12?V and VOUT?=?3.3?V, hence assuring high efficiency at light loads, as required in typical car body applications that are active during car parking.
                A Low Noise Mode (LNM) is also available to meet the requirements of infotainment applications of forced PWM mode in all loading conditions.
                The default configuration of the board is output voltage set to 3.3?V configured in LCM, 500?kHz switching frequency, ISKIP current set to high level and the switchover feature disabled. All of these settings can be easily changed by the user to evaluate different application scenarios.

                主要特性

                • AECQ100 qualification
                • 2 A DC output current
                • 4 V to 38 V operating input voltage
                • Low consumption mode or low noise mode
                • Programmable ISKIP current
                • 30 μA IQ at light load (LCM VIN?=?12?V and VOUT?=?3.3?V)
                • 8 μA IQ-SHTDWN
                • Adjustable fSW (250 kHz - 2 MHz)
                • Output voltage adjustable from 0.85 V to VIN
                • Embedded output voltage supervisor
                • Synchronization (in all fSW range)
                • Adjustable soft-start time
                • Internal current limiting
                • Overvoltage protection
                • Peak current mode architecture
                • RDS(on)HS?=?180?mΩ; RDS(on)LS?=?150?mΩ
                • Thermal shutdown
                • RoHS and WEEE compliant
                参考设计图片
                 
                相关器件
                器件 类型 描述 数据手册
                A6986H 降压稳压器 38 V 2 A同步降压开关稳压器,30 uA静态电流 点击下载
                 

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