Step-Down Module Adjustable Voltage XL4016E1 High Power DC-DC DC Regulator 8A With Regulator XH-M400 Step-down chip: XL4016E1 Input voltage: DC4 ~ 40V Output voltage: AC1.25 ~ 36V Maximum power: 200W Output current: up to 8A (recommended for long time use 5A) Conversion efficiency: 94% Appearance size: 61 * 40 * 19mm