The SLVP089 Synchronous Buck Converter Evaluation Module (SLVP089) provides a method for evaluating the performance of the TL5001 pulse-width- modulation (PWM) controller. The device contains all of the circuitry necessary to control a switch-mode power supply in a voltage-mode configuration. This manual explains how to construct basic power conversion circuits including the design of the control chip functions and the basic loop.
Frequency is set to 100 kHz by R9. See TL5001 data sheet for the curve of oscillator frequency versus timing resistance.

同步整流在高效率場合下適合使用,元件較多,但是換來的高效率不容忽視,輸出幾安培的電流,MOSFEI都不用散熱片,而且都是使用常規的N溝道MOSFET.同步整流隨便做至少都可以達到90%以上的效率,做的好的話可以達到96%以上的效率。TL5001其實設計方面可能需要考慮的最大問題就是補償問題吧,補償不好容易不穩定。上圖使用TPS2812作為MOSFET的驅動,IR公司還有很多類似的驅動如IR2184,IR2104等等都可以使用。
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