A compact DC-DC step-down converter that stably converts 20-90 V DC to 5 V / 3 A (up to 15 W). Ideal for powering phones, GPS, cameras, microcontrollers, USB modules from 24/36/42/42/48/52/60/72/84 V batteries.
Key benefits
- Wide input: 20-90 V DC – compatible with most popular e-mobility systems.
- Stable 5 V output: up to 3 A – enough for phone, GPS, camera, microelectronics.
- Universal use: e-bike, scooter, e-motorcycle, UTV/ATV, DIY projects.
- Equipment protection: voltage regulated; input fuse recommended.
Specifications
- Type: DC-DC Step-Down (Buck)
- Input voltage: 20-90 V DC (24/36/42/48/52/60/72/84 V)
- Output voltage: 5 V DC
- Max. Output current: 3 A (15 W)
- Output: terminals or USB (by batch/model)
Customization
- USB power supply: phone, camera, navigation, LED accessories (via 5 V).
- Electronics: SBC/MCU (Raspberry Pi* / ESP32 / Arduino), sensors, loggers.
* Raspberry Pi 4 often requires >3 A peak – estimate reserve.
Installation tips
- Place a fuse (e.g. 2-3 A) as close to the battery as possible to the input.
- Observe the polarity (＋/-) and use wires of the correct cross section.
- Avoid heat “pockets” – leave room for cooling.
- For sensitive equipment, add output filtering (electrolytic/keramic capacitor).
FAQ
Is it suitable for a 72 V system?
Yes – input range up to 90 V (fully charged 72 V Li-ion ~84 V).
Does it support fast charging (QC/PD)?
No – the output is fixed at 5 V. Devices will charge in 5 V mode.
Can I power the LED strip at 5 V?
Yes, if the total current ≤ 3 A. For higher power, choose a more powerful inverter.
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