TI TIDA－01358智能恒温器电源参考设计
TI公司的TIDA-01358是用于智能恒温器的24VAC功率电源参考设计,采用LM5166超低IQ的降压转换器,具有低BOM成本和高效率性能,输入为24VAC,输出电压5V和3.3V,集成了电池充电和负载通路,整个负载电流范围内高效率,USB过流兼容,主要用在恒温器,视频门铃,无线视频监视和网关.本文介绍了LM5166主要特性和框图,以及24VAC智能恒温器电源参考设计TIDA-01358主要特性,框图,电路图,材料清单和PCB设计图.
The LM5166 is a compact, easy-to-use, 3-V to 65-V,ultra-low IQ synchronous buck converter with highefficiency over wide input voltage and load currentranges. With integrated high-side and low-side powerMOSFETs, up to 500 mA of output current can bedelivered at fixed output voltages of 3.3 V or 5 V, oran adjustable output. The converter is designed tosimplify implementation while providing options tooptimize the performance for the target application.
Pulse Frequency Modulation (PFM) mode is selectedfor optimal light-load efficiency or Constant On-Time(COT) control for nearly constant operatingfrequency. Both control schemes do not require loopcompensation while providing excellent line and loadtransient response and short PWM on-time for largestep-down conversion ratios.
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