XL6009 Adjustable Amplifier Power Module with 4A DC-DC led Voltmeter - LM2577 DSN6009 is a high-performance BOOST module with 4A switching current. Wide input voltage 3V ~ 32V, best operating voltage range is 5 ~ 32V Wide output voltage 5V ~ 35V Built-in 4A high efficiency MOSFET switch, efficiency up to 94%

(LM2577 current is only 3A) High switching frequency of 400KHz, you can get very good results with small capacity of Filter capacitor (LM2577 frequency is only 50KHz)