? TPS40200EVM-002 评估模块使用TPS40200?非同步降压控制器，提供一个电阻选择3.3 V的输出电压，从24 V输入总线，可提供高达2.5 A的电流 。The EVM operates from a single supply and uses a single P-channel power FET and Schottky Diode to produce a low cost buck converter. The part operates at a 200?kHz clock frequency as determined by an external resistor and capacitor. TPS40200EVM-002 is designed to operate with an 18 to 36?V input and to produce a regulated 3.3?V output with a load current from 0.125 to 2.5?A. The TPS40200EVM-002 demonstrates using the TPS40200 in a typical buck converter application. The board sacrifices some layout density to provide ample test points for module evaluation. This EVM can be modified to support output voltages from 0.7?V to 5?V and above, by changing a single feedback resistor. A table is included in the User Guide that lists specific 1% resistors for some common output voltages.
特性
18?V to 36?V input range
3.3?V output, adjustable with single feedback resistor
0.125?A to 2.5?A steady-state output current
200?kHz switching frequency
Single P-channel MOSFET and single rectifier
Two-layer, 1.275?inch x 1.675?inch, surface-mount design with all components on one side
Convenient test points for probing critical waveforms and noninvasive loop response testing
#板卡评测
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2012-11-19
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