IR IRDC3477 SupIRBuck 15A DC电源解决方案

IR公司的IRDC3477是 SupIRBuck容易使用全集成高效15A DC/DC电压稳压器.输入电压3V-27V,输出电压0.5V-12V,连续提供15A的负载电流,非常低的输出电流具有极好的效率,可编程开关频率和软起动,过流保护热补偿,内有精密的基准电压(0.5V, +/‐1%),主要用在笔记本和台式电脑,消费类电子如STB,LCD,TV和打印机等,12V和24V分布式电源,通用POL DC/DC转换器,游戏控制台和图像卡.本文介绍了IR3477主要特性,功能框图, 基本应用电路图和IR3477演示板电路图与材料清单,以及IR3477M 评估板特性, 评估板电路图和IR3477M 评估板材料清单与PCB元件布局图.
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:
 Input Voltage Range: 3V to 27V
 Output Voltage Range: 0.5V to 12V
 Continuous 15A Load Capability
 Constant On‐Time Control
 Compensation Loop not Required
 Excellent Efficiency at Very Low Output Currents
 Programmable Switching Frequency and Soft Start
 Thermally Compensated Over Current Protection
 Power Good Output
 Precision Voltage Reference (0.5V, +/‐1%)
 Enable Input with Voltage Monitoring Capability
 Pre‐bias Start Up
 Thermal Shut Down
 Under/Over Voltage Fault Protection
 Forced Continuous Conduction Mode Option
 Small, Low Profile 5mm x 6mm QFN Package
IR3477应用:
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