Description
XL4016 300 W 8 A CC/CV Step-Down Converter
This XL4016 step-down power supply has separate potentiometers for adjusting output voltage (potentiometer 1) and limiting output current (potentiometer 2). It has two heatsinks. The source states a maximum output of approximately 300 W and 8 A. Actual usable power depends on input and output voltage, current, cooling and operating conditions. The source also describes battery-charging use and says the red LED indicates charging while the green LED indicates a charged battery; the green LED may also light when no load is connected. Do not use these indicators as a standalone charge-termination method. Use a charger profile appropriate to the battery chemistry and cell count, supervise charging and verify completion independently.
Battery example stated by the source: It describes a 12 V lithium battery with a maximum voltage of 14.4 V and sets the output to 14.4 V, with charging current set to 2 A. The source describes a factory LED threshold of 0.1 × charging current (200 mA at 2 A), but its following formula says “0.1 × 1 A = 200 mA,” which is arithmetically inconsistent (0.1 × 1 A is 100 mA). Treat the LED description as unverified source information, not proof of safe or complete charging. Confirm the correct charging voltage and method for the exact battery; do not charge unattended.
The source lists these applications: constant-current supply for high-power LEDs; high-power/current applications; charging lithium, nickel-metal hydride, nickel-cadmium and lead-acid batteries; batteries rated 4 V, 6 V, 12 V, 14 V and 24 V; solar panels and wind turbines. These are examples, not confirmation that one setting or this module alone is suitable for every battery chemistry or system.
Specifications
- Input voltage: 8–40 V
- Output voltage: 1.25–36 V, adjustable with a precision potentiometer
- Output current: 0–8 A; the source calls for a cooling fan if temperature exceeds 65 °C
- Constant-current range: 0.2–8 A, adjustable with a precision potentiometer
- Maximum stated output power: approximately 300 W
- Maximum stated conversion efficiency: 95%
- Maximum stated output ripple: 50 mV at 20 MHz bandwidth
- Load regulation: ±1%
- Voltage regulation: ±1%
- Dynamic response: 5%, 200 µs
- Switching frequency: 180 kHz
- Input reverse-polarity protection: none
- Input overvoltage protection: yes, as specified by the source
- Short-circuit protection: yes, as specified by the source
- Thermal shutdown: integrated
- Dimensions: 6.5 × 4.8 × 2.4 cm
Check input polarity; reverse-polarity protection is not provided. Set and verify the output before connecting a load. Provide adequate cooling and remain within voltage, current and power limits. Datasheet
Keywords: buck, converter, power, supply.
