Buck converter achieves the high power density and small footprint

Texas Instruments’ TPS54202 is a 4.5V to 28V input voltage range, 2A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count. By integrating the MOSFETs and employing the SOT23 package, the device achieves high power density and offers small footprint on PCB. Advanced eco-mode implementation maximizes the light load efficiency and reduces the power loss. The frequency spread spectrum operation is introduced for EMI reduction. Cycle by cycle current limit in both high-side MOSFET protects the converter in over load condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection will be triggered if the over current condition has persisted for longer than the present time.