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精英专访解决方案新品设计应用业界访谈业界动态世界电子元器件2017年第4期11 / 53摘要:Linear 公司的LT8315是集成了630V/300mA 开关的高压反激转换器，不需要光隔离器，输入电压
18V-560V，准谐振边界模式工作，恒流和恒压稳压，低静态电流70μA，可编程限流和软起动，主要用在隔
红烧鱼籽的做法
自的笔顺离的通信，汽车和工业与医疗设备，隔离的离线家用电源，以及电动汽车和电池组.本文介绍了LT8315主
故事中国篮球运球教学要特性，框图，几种应用电路，以及演示板DC2337A 主要特性，电路图，材料清单和PCB 设计图.
The LTR8315 is a high voltage flyback converter with integrated630V/300mA switch.
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No opto-isolator is needed forregulation. The device samples the output voltage from
the isolatedflyback waveform appearing across a third windingon the transformer.
Quasi-resonant boundary modeoperation improves load regulation, reduces
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transformer size, and maintains high efficiency.
At start-up, the LT8315 charges its INTVCC capacitor via acurrent source attached to
the DRAIN pin. During normaloperation, the current source turns off and the
devicedraws its power from a third winding on the transformer.
The LT8315 operates from a wide range of input supplyvoltages and can deliver up
to 15W of power. It is availablein a thermally enhanced 20-pin TSSOP package with
fourpins removed for high-voltage spacing.LT8315主要特性
•
nnWide Input Voltage Range:18V to 560V •nn630V/300mA Integrated Power Switch依乎天理
•nnNo Opto-Isolator Required for Regulation
•nnQuasi-Resonant Boundary Mode Operation
•nnConstant-Current and Constant-Voltage Regulation
宁古塔将军
•nnLow-Ripple Light Load Burst ModeR Operation
•nnLow Quiescent Current: 70μA •nnProgrammable Current Limit and Soft-Start •nnTSSOP Package with High-Voltage Spacing LT8315的应用•nnIsolated Telecom, Automotive, Industrial, MedicalPower Supplies •nnIsolated Off-Line Houkeeping Power Supplies •nnElectric Vehicles and Battery Stacks
图1 LT8315框图Linear LT8315高压微功耗无光耦隔离反激转换器解决方案
