TI TPS543C20 40A单输出DC－DC电源解决方案

TI公司的TPS543C20是4V-16V输入,输出电压0.6-V到5.5-V输出电流40A的同步降压SWIFT™转换器,具有内部自适应的补偿特性的仿真峰值电流模式控制,单独使用的开关频率300kHz-2MHz,堆栈(输出80A)使用的开关频率300kHz-1MHz.其内部积分器和直接放大斜率跟踪环路,无需在宽频率范围内使用外部补偿,使系统设计十分灵活,密集和简单.主要用在无线和有线通信基础设施设备,企业级服务器,交换机和路由器,企业级存储,SSD, ASIC, SoC, FPGA, DSP内核和I/O电源轨.本文介绍了TPS543C20主要特性,功能框图,应用电路图以及0.9V/40A评估模块PWR799EVM主要特性和指标,电路图,材料清单和PCB设计图.
The TPS543C20 employs an internally compensatedemulated peak current mode control, with a clocksynchronizable, fixed frequency modulator for EMIsensitivePOL. The internal integrator and directlyamplifying ramp tracking loop eliminate the need forexternal compensation over a wide range offrequencies thereby making the system Designflexible, dense, and simple. Optional API and BodyBraking help improve transient performance bysignificantly reducing undershoot and overshoot,respectively. Integrated NexFET™ MOSFETs withlow-loss switching facilitate high efficiency and deliverup to 40 A in a 5 mm x 7 mm PowerStack™ packagewith a layout friendly thermal pad. Two TPS543C20devices can be stacked together to provide up to 80-A point-of-load.
TPS543C20主要特性:
• Internally-compensated Advanced Current ModeControl 40A POL
• Input Voltage Range: 4.0-V to 16.0-V
• Output Voltage Range: 0.6-V to 5.5-V
• Integrated 3.0/0.9-mΩ Stacked NexFET™ PowerStage with lossless Low-Side current sensing
• Fixed Frequency - Synchronization to an ExternalClock and/ or Sync Out
• Pin Strapping Programmable Switching Frequency
– 300 kHz to 2 MHz for Standalone
– 300 kHz to 1 Mhz for Stackable
• Stack 2X for up to 80A with Current share,Voltage share, and CLK Sync
• Pin Strapping Programmable Reference from 0.6V to 1.1 V with 0.5% Accuracy
• ...