400W DC-DC Boost Step-Up Module – Efficient Voltage Boosting
Need to step up a 12V source to 24V, 36V, or even 48V? Without a dedicated converter, you’re stuck. This 400W DC-DC boost module is the perfect solution, transforming any input voltage between 8.5V and 50V into an adjustable output of up to 60V, with efficiency losses of less than 4% under optimal conditions.
Note: The output voltage must always be higher than the input voltage. Active cooling is mandatory for input currents exceeding 8A.
Why choose this model? (Key Advantages):
- 400W Real Power — Handles continuous loads reliably without collapsing under current spikes.
- Up to 96% Efficiency — Maximises power transfer to your load, minimising wasted energy as heat.
- Independent Dual Adjustment — Separate potentiometers for voltage and current limit; set exactly what you need without compromise.
- 150kHz Frequency — Provides lower output ripple, smaller passive components, and faster dynamic response compared to standard 50-100kHz converters.
- Integrated 15A Automotive Fuse — Built-in protection to safeguard both the module and your load in case of a fault.
- Integrated Heatsinks — Operates efficiently without extra cooling for moderate loads (under 8A input).
- Compact 48×67×28mm Design — Fits easily into any DIY project enclosure or custom lab power supply.
Performance and Technical Details
At the core of this module is a 150kHz switching boost converter. This high frequency allows for more compact coils and capacitors, resulting in lower output ripple compared to slower alternatives. The maximum input current is 15A, with an output capability of up to 12A. The exact output current depends on the input-to-output voltage ratio—as the voltage gap increases, the available output current decreases proportionally. Adjustments are simple using a standard screwdriver: use the right-hand potentiometer for voltage and the left-hand one for current limiting.
| Parameter | Specification |
|---|---|
| Input Voltage | 8.5V – 50V DC |
| Output Voltage | 10V – 60V DC (adjustable) |
| Maximum Power | 400W |
| Max Input Current | 15A (active cooling recommended above 8A) |
| Max Output Current | 12A (dependent on voltage ratio) |
| Conversion Efficiency | Up to 96% |
| Operating Frequency | 150kHz |
| Integrated Protection | 15A automotive-style fuse |
| Adjustment Type | 2 independent potentiometers (voltage + current) |
| Dimensions | 48mm × 67mm × 28mm |
Setup and Usage Instructions
- Connect your power source to the input terminals (e.g., 12V DC) without a load attached.
- Turn the current potentiometer (left) to your desired maximum value before making other adjustments; otherwise, it may restrict voltage regulation.
- Adjust the voltage potentiometer (right) with a screwdriver until you reach the desired output, verifying with a multimeter at the output terminals.
- Connect your load and monitor the current. If the voltage drops suddenly, increase the current limit using the left potentiometer.
- For input currents exceeding 8A, install an active cooling fan directed at the module’s heatsinks.
- Common Issue: If the voltage doesn’t respond to adjustment, ensure the current potentiometer is not set to minimum, as this can limit the output voltage.
Package Contents
- 1x 400W 15A DC-DC Boost Step-Up Module
- 1x 15A Automotive Fuse (pre-installed)
Frequently Asked Questions
Can I use this module to charge LiPo or Li-ion batteries?
Yes. Set the output voltage and current to the correct values for your battery chemistry before connecting. The module acts as a CC/CV source, which is ideal for controlled charging.
Do I need a fan, or are the integrated heatsinks sufficient?
For input currents under 8A, the integrated heatsinks are sufficient. For currents above 8A or continuous operation at maximum power, adding an active fan is necessary to prevent overheating.
Does it work when powered directly from a 12V car battery?
Yes, 12V falls perfectly within the 8.5V–50V range. Ensure your battery can deliver the required current without dropping below 8.5V under load.
Why isn’t the output voltage changing when I turn the voltage potentiometer?
The current potentiometer (left) is likely set too low, which implicitly limits the voltage. Increase the current limit and try adjusting the voltage again.
What happens if I exceed 50V at the input?
The module is not designed for input voltages above 50V. Exceeding this limit may permanently damage the internal components. Always use a stable power source within the specified limits.
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