ADI ADP2323双输出3A降压电源解决方案

1、adi adp2323双输出3a降压电源解决方案公司的adp2323是集成了90 m的高边的双输出3a 20v同步降压电源稳压器,输入4.5v-20v,输出精度±1%,具有的输出配置,双路输出3a/3a,并联单输出6a,可编程开关频率250khz到1.2mhz,主要用在通信基础设备,网络和服务器,工业和仪表,医疗保健,dc/dc pol应用等.本文介绍了adp2323主要特性, 功能方框图,以及多种应用.the adp2323 is a full featured, dual output, step-down dc-to-dc regulator based on current-

2、mode architecture. the adp2323 integrates two high-side power mosfets and two low-side drivers for the external n-channel mosfets. the two pulse-width mod-ulation () channels can be configured to deliver dual 3 a outputs or a parallel-to-single 6 a output. the regulator operates from input voltages

3、of 4.5 v to 20 v, and the output voltage can be as low as 0.6 v.the switching frequency can be programmed between 250 khz and 1.2 mhz, or synchronized to an external clock to minimize interference in multirail applications. the dual pwm channels run 180° out of phase, thereby reducing input cur

4、rent ripple as well as reducing the size of the input capacitor.the bidirectional synchronization pin can be programmed at a 60°, 90°, or 120° phase shift, providing the possibility for a stackable multiphase power solution.the adp2323 can be set to operate in pulse-frequency modulati

5、on (pfm) mode at a light load for higher efficiency or in forced pwm for noise sensitive applications. external compensation and soft start provide design flexibility. independent enable inputs and power good outputs provide reliable power sequencing. to enhance system reliability, the device also i

6、ncludes undervoltage lockout (uvlo), overvoltage protection (ovp), overcurrent pro-tection (ocp), and thermal shutdown (tsd).the adp2323 operates over the 40 to +125 junction temperature range and is available in a 32-lead lfcsp_wq package .adp2323主要特性:input voltage: 4.5 v to 20 v±1% output acc

7、uracyintegrated 90 m typical high-side mosfetflexible output configurationdual output: 3 a/3 aparallel single output: 6 aprogrammable switching frequency: 250 khz to 1.2 mhzexternal synchronization input with programmable phase shift, or internal clock outputselectable pwm or pfm mode operationadjustable current limit for small inductorexternal compensation and soft startstartup into precharged outputadp2323应用:communications infrastructurenetworking and serversindustrial an