Description
B3603 3 A Digital CC/CV Step-Down Converter
This B3603 digital step-down power supply has a display and buttons for setting voltage (CV) and limiting output current (CC). It can show voltage, current, power (W) and capacity (Ah) in real time for battery charging/discharging or solar-energy applications. Capacity display and CC/CV control do not provide a chemistry-specific battery charger or prove safe charge completion; use suitable external charging control and monitoring for the battery.
- The memory function stores 10 groups of settings for later recall.
- The source describes the microprocessor control as enabling precise output-voltage and current adjustment.
- The initial output state after power-on can be selected.
- A button saves the current voltage and current values.
- The OUT, CV (constant voltage) and CC (constant current) indicators show the operating state in real time.
- The four-digit display can show output voltage, current, power, capacity and other parameters automatically or manually.
- The source states that constant-voltage and constant-current operation helps stabilize the output when input voltage fluctuates; actual operation remains subject to the module’s limits.
Specifications
- Input voltage: 6–40 V
- Output voltage: 0–36 V
- Output current: 0–3 A maximum; additional heatsinking is required above 2.5 A
- Maximum stated conversion efficiency: 92%
- Switching frequency: 150 kHz
- Maximum stated output ripple: 30 mV
- Display resolution as stated by the source: voltage 0.01 V; current 0.001 A; power 0.001 W; capacity 0.001 Ah
- Operating temperature: −40 to +85 °C
- Input reverse-polarity protection: none
- Short-circuit protection: yes, as specified by the source
- Thermal shutdown: integrated
- Dimensions: 66 × 50 × 21 mm
Check input polarity; reverse-polarity protection is not provided. Set and verify the output before connecting a load. Provide additional heatsinking above 2.5 A and remain within the voltage, current and thermal limits. Datasheet
Keywords: buck, converter, power, supply.
