IR IR3477 SupIRBuck高效15A DC电源解决方案

IR公司的IR3477 SupIRBuck是容易使用的高效全集成DC/DC电压稳压器,可提供精确控制的15A输出电压,输入电压从3V到27V,输出电压从0.5V到12V,不需要补偿回路,在非常低输出电流时有极好的效率,可编程开关频率和蔼软起动,主要用在笔记电脑和台式计算机,消费类电子如STB,LCD,TV和打印机等,12V和24V分布电源,通用POL DC/DC转换器以及游戏机和图像卡等.本文介绍了IR3477主要特性,方框图,典型应用电路,演示板电路图和材料清单,以及IRDC3477评估板主要特性,电路图和材料清单.
The IR3477 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make
IR3477 a space‐efficient solution that delivers up to 15A of precisely controlled output voltage.
Programmable switching frequency, soft start, and thermally compensated over current protection allows for a very flexible solution suitable for many different applications and an ideal choice for battery powered applications.
Additional features include pre‐bias startup, very precise 0.5V reference, under/over voltage shutdown, thermal protection, power good output, and enable input with voltage monitoring capability.
IR3477主要特性:
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Input Voltage Range: 3V to 27V
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Output Voltage Range: 0.5V to 12V
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Continuous 15A Load Capability
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Constant On‐Time Control
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Compensation Loop not Required
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Excellent Efficiency at Very Low Output Currents
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Programmable Switching Frequency and Soft Start
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Thermally Compensated Over Current Protection
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Power Good Output
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Precision Voltage Reference (0.5V, +/‐1%)
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Enable Input with Voltage Monitoring Capability
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Pre‐bias Start Up
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Thermal Shut Down
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Under/Over Voltage Fault Protection
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Forced Continuous Conduction Mode Option
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Small, Low Profile 5mm x 6mm QFN Package
IR3477应用:
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