AT30 4A DC DC boost Buck Constant voltage converter power supply battery charger module

Special feature:
1, boost buck converter

1:The input voltage can be stable at 12V regardless of whether it is higher than 12V or less than 12V!
2:Power supply 12V, the output can be reduced to 5V, but also boost to 24V.

2, higher efficiency than the XL6009 module, more power, the output voltage is more pure!
3, ultra-low output voltage ripple, 12V 3A output voltage ripple only 20 mV, especially for the audio /amplifier board, analog circuit power supply!
4, with a mobile phone charger or battery-powered, you can achieve 0.5-30v adjustable DC power supply, very convenient!

key parameter:
Input voltage:DC 4.5-30V
Output voltage: DC 0.5-30V
(Many buyers do not know XL6009 module input and output voltage sum can not exceed its 
rectifier SS34 pressure, that is, 40V, or easily damaged, and this module is still stable)
Output current: to long-term stability in the 3A, to strengthen the heat can reach 4A
(XL6009 module known as built-in 4A switch, but never release the actual test chart, many buyers buy back after the discovery of more than 1A on the hot serious)
Output power: natural heat 30W, strengthen the heat 60W
Output ripple: full load output voltage ripple of 30MV, while the general module is far beyond 100MV
Conversion efficiency: boost 88 ~ 91%; step 87 ~ 90% (according to the pressure and load will 
change .XL6009 module output 12V 1A when the real efficiency is about 82%, and individual sellers 

even publicity efficiency of 94 %)
Short circuit protection: Yes
Operating frequency: 180KHZ
Size: 48 * 23 * 21mm